Ground risk mitigations RAE(F) evaluation
M1A Strategic mitigation - sheltering
Note: Compliance with criterion 2 evaluation of penetration hazard should be assessed by a RAE(F) if you intend to use a UAS that weighs over 25kg and you select M1A.
| Criterion | Low robustness | Medium robustness |
| 1 Evaluation of people at risk | CAA | CAA |
| 2 Evaluation of penetration hazard | CAA if UAS ≤25kg RAE(F) if UAS >25kg |
CAA if UAS ≤25kg RAE(F) if UAS >25kg |
M1B Strategic mitigation using operational restrictions
| Criterion | Low robustness | Medium robustness | High robustness |
| 1 Evaluation of people at risk | CAA | CAA | CAA |
| 2 Impact on at risk population | CAA | CAA | CAA |
M1C Tactical mitigations – Ground observation
| Criterion | Low robustness |
| 1 Procedures | CAA |
| 2 Technical | CAA |
M2 Effects of UA impact dynamics are reduced
| Criterion | Medium robustness | High robustness |
| 1 Technical design | RAE(F) | RAE(F) |
| 2 Procedures | RAE(F) | RAE(F) |
| 3 Training | CAA | CAA |
Containment requirements
Untethered containment requirements
View untethered containment requirements (opens in a new tab)
| Ref | Criterion | Low robustness | Medium robustness | High robustness |
| COR 1 Operational volume containment | Operational volume containment | CAA | RAE(F) | RAE(F) |
| COR 2 End of flight upon exit of the operational volume | End of flight upon exit of the operational volume | CAA | RAE(F) | RAE(F) |
| COR 3 Definition of the ground risk buffer | Definition of the ground risk buffer | CAA | CAA | CAA |
| COR 4 Ground risk buffer containment | Ground risk buffer containment | N/A | RAE(F) | RAE(F) |
Tethered containment requirements
View tethered containment requirements (opens in a new tab)
| Ref | Criterion | Low robustness | Medium robustness | High robustness |
| COT1 | Technical requirements | RAE(F) | RAE(F) | RAE(F) |
| COT2 | Procedures | RAE(F) | RAE(F) | RAE(F) |
Operational Safety Objectives (OSOs)
This table summarizes the various OSOs at SAIL 3 to 6 where a RAE(F) should be used to demonstrate compliance.
We will evaluate all applicable OSOs at SAILs 1 and 2.
OSO links open in new tabs.
| Ref | Requirement | SAIL3 | SAIL4 | SAIL5 | SAIL6 |
| OSO 1 | Ensure the UAS Operator is competent and/or proven | CAA | CAA | CAA | CAA |
| OSO 2 | UAS manufactured by competent and/or proven entity | RAE(F) | RAE(F) | RAE(F) | RAE(F) |
| OSO 3 Criterion 1 | UAS maintained by competent and/or proven entity | RAE(F) | RAE(F) | RAE(F) | RAE(F) |
| OSO 3 Criterion 2 | UAS maintained by competent and/or proven entity | CAA | CAA | CAA | CAA |
| OSO 4 | UAS components are designed to an Airworthiness Standard | N/A | RAE(F) | RAE(F) | RAE(F) |
| OSO 5 | UAS is designed considering system safety and reliability | RAE(F) | RAE(F) | RAE(F) | RAE(F) |
| OSO 6 | C3 link characteristics | RAE(F) | RAE(F) | RAE(F) | RAE(F) |
|
OSO 7 Criterion 1 |
Conformity check of the UAS configuration | RAE(F) | RAE(F) | RAE(F) | RAE(F) |
|
OSO 7 Criterion 2 |
Conformity check of the UAS configuration | CAA | CAA | CAA | CAA |
| OSO 8 | Operational procedures are defined, validated and adhered to | CAA | CAA | CAA | CAA |
| OSO 9 | Remote crew trained and current | CAA | CAA | CAA | CAA |
| OSO 13 | External services supporting UAS operations are adequate for the operation | CAA | CAA | CAA | CAA |
|
Criterion 1 and 2 |
Multi-crew coordination | CAA | CAA | CAA | CAA |
|
Criterion 3 |
Multi-crew coordination | RAE(F) | RAE(F) | RAE(F) | RAE(F) |
| OSO 17 | Remote crew is fit to operate | CAA | CAA | CAA | CAA |
| OSO 18 | Automatic protection of the flight envelope from human errors | RAE(F) | RAE(F) | RAE(F) | RAE(F) |
| OSO 19 | Safe recovery from human error | RAE(F) | RAE(F) | RAE(F) | RAE(F) |
| OSO 20 | Human Factors evaluation | RAE(F) | RAE(F) | RAE(F) | RAE(F) |
| OSO 23 | Environmental conditions | RAE(F) | RAE(F) | RAE(F) | RAE(F) |
| OSO 24 | UAS designed and qualified for adverse environmental conditions | RAE(F) | RAE(F) | RAE(F) | RAE(F) |
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