Hazard and Safety Risk Log

1A/D

Remote Pilot incapacitation during operations, resulting in the aircraft being out of control. 

Collision with an uninvolved person or aircraft

2 x 5 = 10

The UA has an automated return-to-home feature. In the event of RP incapacitation, the UA will return home in line with the failsafe features listed in Volume 2. 

When present the UAO will activate the RTH feature, in line with the on-site briefing they receive. 

RP’s will follow the IMSAFE procedures listed within Volume 1 to prevent a medical episode during operations. 

2 x 5 = 10

Y

Y

JHW

1B/C

Remote Pilot incapacitation during operations, resulting in the aircraft being out of control. 

Collision with an uninvolved person or aircraft

2 x 5 = 10

The UA has an automated return-to-home feature. In the event of RP incapacitation, the UA will return home in line with the failsafe features listed in Volume 2. 

When present the UAO will activate the RTH feature, in line with the on-site briefing they receive. 

RP’s will follow the IMSAFE procedures listed within Volume 1 to prevent a medical episode during operations. 

2 x 5 = 10

Y

Y

JHW

2A/D

Technical failure of the unmanned aircraft, resulting in a loss of control

Collision with an uninvolved person

3 x 5 = 15

Drone Ag Limited only use suitably qualified, experienced and trained remote Pilots, who adhere to the correct operational procedures outlined within Volume 1, including the use of checklists. The checklist utilised means that the RP checks the airworthiness of the UA before the UA is launched. A maintenance regime is in place to reduce the likelihood of a technical failure occurring 

Single points of failure have been identified, coupled with known failure modes. Preventative measures have been put in place to reduce the likelihood of these failures occurring. 

Drone Ag Limited UAS operations do not intentionally overfly uninvolved third parties. This provides a barrier, which prevents injury in the event of failure and the UA falling to the ground.

2 x 5 = 10

Y

Y

JHW

2B/C

Technical failure of the unmanned aircraft, resulting in a loss of control

Collision with an uninvolved person

3 x 5 = 15

Drone Ag Limited only use suitably qualified, experienced and trained remote Pilots, who adhere to the correct operational procedures outlined within Volume 1, including the use of checklists. 

The checklist utilised means that the RP checks the airworthiness of the UA before the UA is launched. 

A maintenance regime is in place to reduce the likelihood of a technical failure occurring 

Single points of failure have been identified, coupled with known failure modes. Preventative measures have been put in place to reduce the likelihood of these failures occurring. 

Drone Ag Limited UAS operations do not intentionally overfly uninvolved third parties. This provides a barrier, which prevents injury in the event of failure and the UA falling to the ground.

2 x 5 = 10

Y

Y

JHW

3A/D

Payload attachment failure, resulting in payload falling from aircraft.

Payload collides with an uninvolved person

2 x 5 = 10

A maintenance regime is in place to reduce the likelihood of a technical failure occurring, which could result in the payload attachment mechanism failing during flight. 

Drone Ag Limited only utilise qualified, experienced and trained remote Pilots, who adhere to the correct operational procedures outlined within Volume 1, including the use of pre-flight checklists to ensure payloads are secure.

Additional safety checks are carried out before each flight to ensure all spraying equipment is secure and functioning correctly.

The spraying/spreading payload is highly integrated into the drone structure, forming part of it, and the spray tank is loaded from the top, and therefore it cannot detach in flight, the drone would have to flip over for the tank to even have the possibility of coming loose.

1 x 5 = 5

Y

Y

JHW

3B/C

Payload attachment failure, resulting in payload falling from aircraft.

Payload collides with an uninvolved person

1 x 3 = 3

A maintenance regime is in place to reduce the likelihood of a technical failure occurring, which could result in the payload attachment mechanism failing during flight. 

Drone Ag Limited only use qualified, experienced and trained remote Pilots, who adhere to the correct operational procedures outlined within Volume 1, including the use of pre-flight checklists to ensure payloads are secure.

No further mitigations are required.

1 x 3 = 3

Y

Y

JHW

4A/D

Collision with a structure, resulting in the UA losing control and falling to the ground

Collision with an uninvolved person

2 x 5 = 10

Drone Ag Limited only utilises suitably qualified, experienced and trained remote Pilots, who adhere to the correct operational procedures outlined within volume 1, which includes minimum safe distances from uninvolved persons within occupied structures. 

Operations will be within VLOS limits which allows the RP to sufficiently judge distance to the building.

Drone Ag Limited UAS operations do not intentionally overfly uninvolved third parties. This provides a barrier, which prevents injury in the aircraft colliding with a structure. 

Collision avoidance is present on all Drone Ag Limited UAS providing further mitigations against collisions. Agras systems also utilise radar technology to further prevent the risk of a collision with a structure. 

The operations by Drone Ag Limited are conducted within agricultural areas, as such the risk of collision with a structure is exceptionally low. 

1 x 5 = 5

Y

Y

JHW

4B/C

Collision with a structure, resulting in the UA losing control and falling to the ground

Collision with an uninvolved person

2 x 5 = 10

Drone Ag Limited only utilises suitably qualified, experienced and trained remote Pilots, who adhere to the correct operational procedures outlined within Volume 1, which includes minimum safe distances from uninvolved persons within occupied structures. 

Operations will be within VLOS limits which allows the RP to sufficiently judge distance to the building.

Drone Ag Limited UAS operations do not intentionally overfly uninvolved third parties. This provides a barrier, which prevents injury in the aircraft colliding with a structure. 

Collision avoidance is present on all Drone Ag Limited UAS providing further mitigations against collisions. 

The operations by Drone Ag Limited are conducted within agricultural areas, as such the risk of collision with a structure is exceptionally low. 

1 x 5 = 5

Y

Y

JHW

5A/D

C2 Link loss during operation, resulting in loss of control

Collision with an uninvolved person or aircraft

3 x 5 = 15 

The UA is only operated at a distance that is covered by the manufacturer's specifications. 

The UA has an automated return-to-home capability. During return-to-home procedures, collision avoidance sensors are still active, and the UA raises to a predetermined height that the RP has ensured is safe for the UA to transit at within the operational volume. The operation is only undertaken within a direct line of sight, reducing the risk of a loss of C2 link between the UA and the command unit.

1 x 5 = 5

Y

Y

JHW

5B/C

C2 Link loss during operation, resulting in loss of control

Collision with an uninvolved person or aircraft

3 x 5 = 15 

The UA is only operated at a distance that is covered by the manufacturer's specifications. 

The UA has an automated return-to-home capability. During return-to-home procedures, collision avoidance sensors are still active, and the UA raises to a predetermined height that the RP has ensured is safe for the UA to transit at within the operational volume. The operation is only undertaken within a direct line of sight, reducing the risk of a loss of C2 link between the UA and the command unit.

1 x 5 = 5

Y

Y

JHW

6A/D

The incursion into operational volume by other airspace users

Collision between the UA and the other airspace user. 

2 x 5 = 10

Airspace information is checked as part of the pre-flight survey, this includes checking of NOTAMS which will inform the RP of any planned low-level flying activities taking place, such as helicopter-based inspections or air show performances. When operating nearby areas where low-flying aircraft would be present, such as airports where aircraft are landing, the RP will conduct notification procedures, recording the information of those notified, to provide information to the controlling authority. If required, a mitigation and deconfliction plan will be put in place. 

Visual line of sight is maintained during Drone Ag Limited UAS operations, allowing air risk to be seen and mitigated. Additional strobe lighting is added to the UA to aid in conspicuity if required. Emergency procedures are practised yearly and committed to memory, this includes emergency procedures for dealing with airspace incursions, as detailed in Volume 1. This includes the RP either reducing height or holding the position of the UA. 

1 x 5 = 5

Y

Y

JHW

6B/C

The incursion into operational volume by other airspace users

Collision between the UA and the other airspace user. 

2 x 5 = 10

Airspace information is checked as part of the pre-flight survey, this includes checking of NOTAMS which will inform the RP of any planned low-level flying activities taking place, such as helicopter-based inspections or air show performances. When operating nearby areas where low-flying aircraft would be present, such as airports where aircraft are landing, the RP will conduct notification procedures, recording the information of those notified, to provide information to the controlling authority. If required, a mitigation and deconfliction plan will be put in place. 

Visual line of sight is maintained during Drone Ag Limited UAS operations, allowing air risk to be seen and mitigated. Additional strobe lighting is added to the UA to aid in conspicuity if required. Emergency procedures are practised yearly and committed to memory, this includes emergency procedures for dealing with airspace incursions, as detailed in Volume 1. This includes the RP either reducing height or holding the position of the UA. 

1 x 5 = 5

Y

Y

JHW

7A/D

Cordon incursion by an uninvolved person

Collision with the uninvolved person

2 x 5 = 10

The take-off and landing areas are cordoned off and identifiable where the RP deems it necessary, particularly if there are uninvolved persons nearby. All remote pilots receive training to ensure that they understand when cordons are required. 

Emergency procedures are put in place for a cordon incursion to be correctly dealt with. RP’s follow the emergency procedure for a Cordon Incursion as defined in Volume 1. Emergency procedures are practised yearly and committed to memory. An alternate landing area can be identified for the UA to land away from the designated TOLA in the event of a persistent incursion event. 

1 x 5 = 5

Y

Y

JHW

7B/C

Cordon incursion by an uninvolved person

Collision with the uninvolved person

2 x 4 = 8

The take-off and landing areas are cordoned off and identifiable where the RP deems it necessary, particularly if there are uninvolved persons nearby. All remote pilots receive training to ensure that they understand when cordons are required. 

Emergency procedures are put in place for a cordon incursion to be correctly dealt with. RP’s follow the emergency procedure for a Cordon Incursion as defined in Volume 1. Emergency procedures are practised yearly and committed to memory. An alternate landing area can be identified for the UA to land away from the designated TOLA in the event of a persistent incursion event. 

1 x 4 = 4

Y

Y

JHW

8A/D

Loss of Control of the UA due to loss of GPS

Collision with uninvolved persons

2 x 5 = 10

Drone Ag Limited only utilises suitably qualified, experienced and trained remote Pilots, who adhere to the correct operational procedures outlined within Volume 1. This includes the use of a Pre-Flight Take-Off Checklist where it is checked that GPS has been acquired and that the aircraft displays no warnings. 

Remote Pilots are provided training in how to correctly deal with emergencies. This includes the Loss of GPS. Remote Pilots are sufficiently skilled to fly the UA in ‘Non-GPS / ATTI mode.’ Emergency procedures are practised yearly and committed to memory. 

1 x 5 = 5

Y

Y

JHW

8B/C

Loss of Control of the UA due to loss of GPS

Collision with uninvolved persons

2 x 5 = 10

Drone Ag Limited only utilises suitably qualified, experienced and trained remote Pilots, who adhere to the correct operational procedures outlined within Volume 1. This includes the use of a Pre-Flight Take-Off Checklist where it is checked that GPS has been acquired and that the aircraft displays no warnings. 

Remote Pilots are provided training in how to correctly deal with emergencies. This includes the Loss of GPS. Remote Pilots are sufficiently skilled to fly the UA in ‘Non-GPS / ATTI mode.’ Emergency procedures are practised yearly and committed to memory. 

1 x 5 = 5

Y

Y

JHW

9A/D

Loss of control of the UA due to a single point of failure occurrence. 

Collision with uninvolved persons

2 x 5 = 10

Single points of failure for the aircraft subject to the Operating Safety Case are outlined in Volume 2, section 1.3.15B. Due to the nature of the operational areas that Drone Ag Limited will conduct UAS Operations, specifically that they are unpopulated areas of farming land, the presence of uninvolved persons is unlikely. 

Remote Pilots will receive appropriate training, as defined within volume 1 and be authorised to complete operations covered in this operating safety case, this includes a minimum experience level before operations are conducted. Training provided ensures that the RP’s comply with all operational procedures. RP’s have a clear understanding that overflight of uninvolved persons must not be undertaken intentionally, although the nature of the flight areas will make this highly unlikely given that the UAS Operator conducts operations over agricultural land. UAS single points of failure will usually result in the aircraft falling to the ground below rapidly, as such not undertaking intentional overflight of uninvolved persons significantly reduces this risk. A maintenance regime is in place that delivers maintenance above that required by the manufacturer, reducing the risk of failures occurring. Remote Pilots are provided training in how to correctly deal with emergency incidents. This includes the technical failure of the UAS. Emergency procedures are practised yearly and committed to memory.

1 x 5 = 5

Y

Y

JHW

9B/C

Loss of control of the UA due to a single point of failure occurrence. 

Collision with uninvolved persons

2 x 5 = 10

Single points of failure for the aircraft subject to the Operating Safety Case are outlined in Volume 2, section 1.3.15B. Due to the nature of the operational areas that Drone Ag Limited will conduct UAS Operations, specifically that they are unpopulated areas of farming land, the presence of uninvolved persons is unlikely. 

Remote Pilots will receive appropriate training, as defined within volume 1 and be authorised to complete operations covered in this operating safety case, this includes a minimum experience level before operations are conducted. Training provided ensures that the RP’s comply with all operational procedures. RP’s have a clear understanding that overflight of uninvolved persons must not be undertaken intentionally, although the nature of the flight areas will make this highly unlikely given that the UAS Operator conducts operations over agricultural land. UAS single points of failure will usually result in the aircraft falling to the ground below rapidly, as such not undertaking intentional overflight of uninvolved persons significantly reduces this risk. A maintenance regime is in place that delivers maintenance above that required by the manufacturer, reducing the risk of failures occurring. Remote Pilots are provided training in how to correctly deal with emergency incidents. This includes the technical failure of the UAS. Emergency procedures are practised yearly and committed to memory.

1 x 5 = 5

Y

Y

JHW

10A/D

Loss of control of the UA due to a fly-away

Collision with uninvolved persons or aircraft 

3 x 5 = 15 

Pre-flight checks are completed to ensure the aircraft is functioning correctly before any operations are undertaken, this includes control surface/function checks during the take-off procedures. Clear parameters exist under Volume 1, section 4.15, regarding weather conditions. This reduces a weather-related UAS flyaway by ensuring that a UA only operates in line with the manufacturer’s recommendations. 

Remote Pilots are provided training in how to correctly deal with emergency incidents. This includes the technical failure of the UAS which would result in a flyaway. RP’s follow the emergency procedure for a flyaway as defined in Volume 1, inclusive of notifying the nearest Air Traffic Control unit of the Flyaway, and the Local Police. Emergency procedures are practised yearly and committed to memory. A maintenance regime is in place that delivers maintenance above that required by the manufacturer, reducing the risk of failures occurring.

1 x 5 = 5

Y

Y

JHW

10B/C

Loss of control of the UA due to a fly-away

Collision with uninvolved persons or aircraft 

3 x 5 = 15 

Pre-flight checks are completed to ensure the aircraft is functioning correctly before any operations are undertaken, this includes control surface/function checks during the take-off procedures. Clear parameters exist under Volume 1, section 4.15, regarding weather conditions. This reduces a weather-related UAS flyaway by ensuring that a UA only operates in line with the manufacturer’s recommendations. 

Remote Pilots are provided training in how to correctly deal with emergency incidents. This includes the technical failure of the UAS which would result in a flyaway. RP’s follow the emergency procedure for a flyaway as defined in Volume 1, inclusive of notifying the nearest Air Traffic Control unit of the Flyaway, and the Local Police. Emergency procedures are practised yearly and committed to memory. A maintenance regime is in place that delivers maintenance above that required by the manufacturer, reducing the risk of failures occurring.

1 x 5 = 5

Y

Y

JHW

11A/D

Loss of orientation during Night Operations

Collision with uninvolved persons or aircraft.

1 x 5 = 5

During night-time operations, standard night operating procedures will be followed, as defined in section 4.1. A site safety assessment shall be conducted, and any hazards, restrictions or obstacles will be identified and recorded. The take-off site shall be sufficiently illuminated. The UA will be fitted with sufficient external lighting to ensure conspicuity. 

Standard permission operating procedures provide sufficient mitigations.

1 x 5 = 5

Y

Y

JHW

11B/C

Loss of orientation during Night Operations

Collision with uninvolved persons or aircraft.

1 x 5 = 5

During night-time operations, standard night operating procedures will be followed, as defined in section 4.1. A site safety assessment shall be conducted, and any hazards, restrictions or obstacles will be identified and recorded. The take-off site shall be sufficiently illuminated. The UA will be fitted with sufficient external lighting to ensure conspicuity. 

Standard permission operating procedures provide sufficient mitigations.

1 x 5 = 5

Y

Y

JHW

25B/A

Trips, slips and falls

During operations the pilot may trip, slip or fall

2x3=6

Pre-site checks are carried out to ensure the area the crew will be will be operating from is clear and safe to move around in. Crews are briefed on site to ensure they are aware of any potential trip hazards.

Standard permission operating procedures provide sufficient mitigations.

2x3=6

Y

Y

JHW

25B/B

transporting equipment

Personal injury could occur to do incorrect transportation of equipment

2x3=6

Crews are trained and briefed in the correct transportation of equipment to, from and on site.

Standard permission operating procedures provide sufficient mitigations.

2x3=6

Y

Y

JHW

26B/A

Lipo battery fire

Lipo batteries may cause fires

2x4=8

Lipo batteries are carefully monitored at all times. Charging takes place either outdoors, away from potential fire hazards, or using lipo safe bags.

Lipo battery condition is monitored and lipo batteries are replaced as needed.

Standard permission operating procedures provide sufficient mitigations.

1x3=3

Y

Y

JHW

27B/A

Birds and wind-blow debris

Birds or wind blown debris in the area may collide with the UA

2x4=8

The pilot is trained to be aware of any birds or debris within the flight area and will guide the UA as necessary to avoid them.

The pilot will judge if an operation is safe to continue based on the risk of birds or debris in the area.

Emergency procedures will be followed if birdstsrike or debris-strike occurs.

Standard permission operating procedures provide sufficient mitigations.

1x4=4

Y

Y

JHW

27B/B

Tree collision

UA may collide with trees

2x4=8

Pre site planning and on site planning procedures will be followed and flight planning will take any trees in the area in to account to ensure the UA does not come within close proximity of trees.

Pilots are trained and will take evasive action should the UA become too close to any trees.

Standard permission operating procedures provide sufficient mitigations.

1x4=8

Y

Y

JHW

12A/D

Loss of C2 Link caused by operations at extended Distance

Collision with an uninvolved person or aircraft

3 x 5 = 15

To address the specific requirements of Drone Ag Limited, multiple aircraft are required to operate utilising EVLOS techniques. EVLOS distances are specific to the aircraft being operated as a result. The authorised distances are listed within Volume 1 of the Safety case. EVLOS distances are compliant with both C2 ratings of the manufacturer, and the VLOS distance of the UA. All systems utilised will have an automatic feature provided by DJI that analyses the C2 spectrum and assigns the least congested channel. The systems also automatically channel hop to ensure the best channel is utilised, reducing the risk of signal loss. 

Use of additional equipment (See Vol 2F) provide redundant back up C2 link via 4G mobile networks.

All UAs have an automated return to home. During return-to-home procedures, collision avoidance sensors are still active, and the UA raises to a predetermined height that the RP has ensured is safe for the UA to transit within the operational volume. Emergency procedures are in place to assist the RP in regaining the control link with the UA if lost. All systems are only operated within RLOS, in line with both manufacturer specifications and it is ensured that there will be no obstruction between the UA and the remote. 

1 x 5 = 5

Y

Y

JHW

12B

Loss of C2 Link caused by operations at extended Distance

Collision with an uninvolved person or aircraft

3 x 5 = 15

To address the specific requirements of Drone Ag Limited, multiple aircraft are required to operate utilising EVLOS techniques. EVLOS distances are specific to the aircraft being operated as a result. The authorised distances are listed within Volume 1 of the Safety case. BVLOS distances are compliant with both C2 ratings of the manufacturer, and the VLOS distance of the UA. All systems used will have an automatic feature provided by DJI that analyses the C2 spectrum and assigns the least congested channel. The systems also automatically channel hop to ensure the best channel is used, reducing the risk of signal loss. 

Use of additional equipment (See Vol 2F) provide redundant back up C2 link via 4G mobile networks.

All UAs have an automated return to home. During return-to-home procedures, collision avoidance sensors are still active, and the UA raises to a predetermined height that the RP has ensured is safe for the UA to transit within the operational volume. Emergency procedures are in place to assist the RP in regaining the control link with the UA if lost. All systems are only operated within RLOS, in line with both manufacturer specifications and it is ensured that there will be no obstruction between the UA and the remote. 

1 x 5 = 5

Y

Y

JHW

13A/D

Team Communication Loss

Collision with manned aircraft

3 x 5 = 15

Back-up communication methods are carried by the RP, UAO and the spotters. In the event of a communication system failure, backup communications are immediately activated. Periodic comms checks are completed to ensure that the communication method has not failed.

Emergency procedures are in place in the event of a total communications failure. The RP will immediately return home if both communication methods are lost. During return-to-home procedures, collision avoidance sensors are still active, and the UA raises to a predetermined height that the RP has ensured is safe for the UA to transit within the operational volume. The RP is also able to utilise the camera feed to guide the UA back to the home point in an emergency, alternatively, the RP can land in an emergency landing area. 

2 x 5 = 10

Y

Y

JHW

13B

Team Communication Loss, resulting in the position of the UA no longer being communicated to the Remote Pilot,

Collision with manned aircraft

3 x 5 = 15

Back-up communication methods are carried by the RP, UAO and the spotters. In the event of a communication system failure, backup communications are immediately activated. Periodic comms checks are completed to ensure that the communication method has not failed.

Emergency procedures are in place in the event of a total communications failure. The RP will immediately return home if both communication methods are lost. During return-to-home procedures, collision avoidance sensors are still active, and the UA raises to a predetermined height that the RP has ensured is safe for the UA to transit at within the operational volume. The RP is also able to utilise the camera feed to guide the UA back to the home point in an emergency, alternatively, the RP can land in an emergency landing area. 

2 x 5 = 10

Y

Y

JHW

14A/D

Aircraft Incursion into operational volume

Collision with an aircraft 

4 x 5 = 20

NOTAMS and airspace are checked before any operation is undertaken. When operating near an airport or sources of air traffic, notify provided to the location. Visibility minima have been established for operations detailed within Volume 1. When operating nearby areas where low-flying aircraft would be present, such as airports where aircraft are landing, the RP will conduct notification procedures, recording the information of those notified, to provide information to the controlling authority. If required, a mitigation and deconfliction plan will be put in place.

Visual line of sight is always maintained with the UA during Drone Ag Limited operations. Visibility minima have been established, both horizontal and vertical to ensure that the UA only operates in airspace that can be fully observed by the RP and the UA. Additional strobe lighting is added to the UA to aid in conspicuity as required. Emergency procedures by the Spotter, RP and UAO will be activated to sufficiently deconflict the UA with the aircraft. 

2 x 5 = 10

Y

Y

JHW

14B

Aircraft Incursion into operational volume

Collision with an aircraft 

4 x 5 = 16

NOTAMS and airspace are checked before any operation is undertaken. When operating near an airport or sources of air traffic, notify provided to the location. Visibility minima have been established for operations detailed within Volume 1. When operating nearby areas where low-flying aircraft would be present, such as airports where aircraft are landing, the RP will conduct notification procedures, recording the information of those notified, to provide information to the controlling authority. If required, a mitigation and deconfliction plan will be put in place.

Visual line of sight is always maintained with the UA during Drone Ag Limited operations. Visibility minima have been established, both horizontal and vertical to ensure that the UA only operates in airspace that can be fully observed by the RP and the UA. Additional strobe lighting is added to the UA to aid in conspicuity as required. Emergency procedures by the Spotter, RP and UAO will be activated to sufficiently deconflict the UA with the aircraft. 

2 x 5 = 10

Y

Y

JHW

15A/D

Loss of VLOS / Orientation by the flight crew, resulting in The position of the UA no longer being communicated to the Remote Pilot,

Collision with manned aircraft

3 x 5 = 15

Emergency procedures are activated to regain VLOS with the UA. The VLOS distance of the UA dictates the EVLOS distances to ensure that VLOS is always maintained during the operation. 

In the event of a loss of VLOS, the RP will begin emergency procedures with the support of the spotters. This will be via radio communications, with the RP providing inputs into the aircraft if required to make the aircraft more prominent. The RP may also talk in the spotters’ sight to the location of the UA. Spotters will receive a briefing, so they are aware of the importance of maintaining VLOS, and how to follow the correct procedure if VLOS is lost. If VLOS cannot be regained, the operation shall be terminated. 

2 x 5 = 10

Y

Y

JHW

15B

Loss of VLOS / Orientation by the flight crew, resulting in The position of the UA no longer being communicated to the Remote Pilot. 

Collision with manned aircraft

3 x 5 = 15

Emergency procedures are activated to regain VLOS with the UA. The VLOS distance of the UA dictates the EVLOS distances to ensure that VLOS is always maintained during the operation. 

In the event of a loss of VLOS, the RP will begin emergency procedures with the support of the spotters. This will be via radio communications, with the RP providing inputs into the aircraft if required to make the aircraft more prominent. The RP may also talk in the spotters’ sight to the location of the UA. Spotters will receive a briefing, so they are aware of the importance of maintaining VLOS, and how to follow the correct procedure if VLOS is lost. If VLOS cannot be regained, the operation shall be terminated. 

2 x 5 = 10

Y

Y

JHW

16A/D

Weather limits are exceeded whilst the UA is at a distance from the RP, the RP is unaware that weather limits have been exceeded and a technical failure of the UA occurs, resulting in a loss of control

Collision with an uninvolved person

2 x 5 = 10

Clear guidance exists within the operating safety case about weather that the UA is authorised to operate. Before any operation is conducted, weather forecasts are obtained and recorded. The UA will not be operated in conditions that exceed the operational envelope. In the unlikely event of weather conditions exceeding limits during operational tasking, the UA is returned home or landed in line with the emergency procedure. Emergency procedures are activated, and the UA is returned to the RP. The operation will not be restarted until the weather limits are tolerable. 

If the Spotter detects that weather limitations have been exceeded, they will immediately inform the RP via Radio Communications and the aircraft will be returned to the home point. 

1 x 5 = 5

Y

Y

JHW

16B

Weather limits are exceeded whilst the UA is at a distance from the RP, the RP is unaware that weather limits have been exceeded and a technical failure of the UA occurs, resulting in a loss of control

Collision with an uninvolved person

3 x 5 = 15

Clear guidance exists within the operating safety case about weather that the UA is authorised to operate. Before any operation is conducted, weather forecasts are obtained and recorded. The UA will not be operated in conditions that exceed the operational envelope. In the unlikely event of weather conditions exceeding limits during operational tasking, the UA is returned home or landed in line with the emergency procedure. Emergency procedures are activated, and the UA is returned to the RP. The operation will not be restarted until the weather limits are tolerable. 

If the Spotter detects that weather limitations have been exceeded, they will immediately inform the RP via Radio Communications and the aircraft will be returned to the home point. 

1 x 5 = 5

Y

Y

JHW

21A/D

Non-harmful articles dropped drift out of operational volume. 

Dropped items collide with uninvolved persons

4 x 1 = 4

All articles dropped initially are classed as non-harmful and are limited to pellets, seeds, and non-harmful liquids. No articles dropped are subject to HSE approval due to their non-harmful nature. The maximum altitude of the UA will not exceed 15M during spraying. Calculations demonstrate that articles will not collide with uninvolved persons at this distance. 

Drone Ag Limited only use suitably qualified, experienced, and trained remote pilots. This includes specific training relating to spraying operations. All spraying operations are conducted above land controlled by the RP, reducing the risk of uninvolved persons being present. A 50M buffer will be used between the spray area and areas where uninvolved persons may be present, such as Roads. Clear guidance exists within Volume 1 about minimum boundaries to ensure that articles being dropped do not come into contact with uninvolved persons. The buffer distance changes based on the height and speed of the UA conducting the dropping.

2 x 1 = 2

Y

Y

JHW

22A/D

An uninvolved person incurs into the spraying area whilst non-harmful articles are dropped. 

Dropped items collide with uninvolved persons

4 x 1 = 4

All articles dropped are classed as non-harmful and are limited to pellets, seeds, and non-harmful liquids. No articles dropped are subject to HSE approval due to their non-harmful nature. Operations are conducted within VLOS. The altitude of the UA shall not exceed 15M during the operation. Due to the low altitude of the UA, the RP will be able to monitor the ground below the UA, ensuring that uninvolved persons are observers and avoiding action taken if required.

Drone Ag Limited only use suitably qualified, experienced and trained remote pilots. This includes specific training relating to spraying operations. All spraying operations are conducted above land controlled by the RP, reducing the risk of uninvolved persons being present. A 50M buffer will be used between the spray area and areas where uninvolved persons may be present, such as Roads. Clear guidance exists within Volume 1 about minimum boundaries to ensure that articles being dropped do not come into contact with uninvolved persons. The buffer distance changes based on the height and speed of the UA conducting the dropping.

2 x 1 = 2

Y

Y

JHW

23A/D

Articles subject to HSE approval dropped drift out of operational volume. 

Dropped items collide with uninvolved persons

4 x 3 = 12

The maximum altitude of the UA will not exceed 15M during spraying. Calculations demonstrate that articles will not collide with uninvolved persons at this distance. 

All substances that require HSE approval shall only be dropped when an application certificate is awarded. This ensures that the application plan is acceptable to the HSE. Drone Ag Limited only utilised suitably qualified, experienced and trained remote pilots. This includes specific training relating to spraying operations. All spraying operations are conducted above land controlled by the RP, reducing the risk of uninvolved persons being present. A 50M buffer will be utilised between the spray area and areas where uninvolved persons may be present, such as Roads. Clear guidance exists within Volume 1 about minimum boundaries to ensure that articles being dropped do not come into contact with uninvolved persons. The buffer distance changes based on the height and speed of the UA conducting the dropping.

2 x 3 = 6

Y

Y

JHW

24A/D

An uninvolved person incurs into the spraying area whilst articles subject to HSE approval dropped  

Dropped items collide with uninvolved persons

4 x 5 = 20

Operations are conducted within VLOS. The altitude of the UA shall not exceed 15M during the operation. Due to the low altitude of the UA, the RP will be able to monitor the ground below the UA, ensuring that uninvolved persons are observers and avoiding action taken if required.

All substances that require HSE approval shall only be dropped when an application certificate is awarded. This ensures that the application plan is acceptable to the HSE. Drone Ag Limited only utilised suitably qualified, experienced and trained remote pilots. This includes specific training relating to spraying operations. All spraying operations are conducted above land controlled by the RP, reducing the risk of uninvolved persons being present. A 50M buffer will be utilised between the spray area and areas where uninvolved persons may be present, such as Roads. Clear guidance exists within Volume 1 about minimum boundaries to ensure that articles being dropped do not come into contact with uninvolved persons. The buffer distance changes based on the height and speed of the UA conducting the dropping. 

2 x 5 = 10

Y

Y

JHW