OSO 13 – External services supporting UAS operations are adequate for the operation
AMC1 Article 11 Annex E. Operational Safety Objective 13
CAA ORS9 Decision No. 46
OSO 13 – External services supporting UAS operations are adequate for the operation
Level of integrity
| Criterion | Low (SAIL 1, 2) | Medium (SAIL 3) | High (SAIL 4 to 6) |
|---|---|---|---|
| Criterion (Deterioration of external services supporting UAS operations) | OSO13.L.I | OSO13.L.I | OSO13.L.I |
Level of assurance
| Criterion | Low (SAIL 1, 2) | Medium (SAIL 3) | High (SAIL 4 to 6) |
|---|---|---|---|
| Criterion (Deterioration of external services supporting UAS operations) | OSO13.L.A | OSO13.M.A |
OSO13.M.A OSO13.H.A |
Low level of robustness (SAIL 1 and 2)
OSO13.L.I
(a) The applicant must ensure that the level of performance for any externally provided service critical for the safety of the flight is adequate for the intended operation.
(b) If the externally provided service requires communication between the Operator and the Service Provider, the applicant must ensure there is effective communication to support the service provisions.
(c) Roles and responsibilities between the applicant and the external Service Provider must be defined.
OSO13.L.A
(a) The Applicant must declare and provide evidence of compliance with the Integrity requirements. The detailed evidence of compliance may be assessed by the CAA.
(b) The supporting evidence must demonstrate that the required level of performance for any externally provided service required for the safety of the flight may be achieved for the full duration of the mission.
AMC.OSO13.L.A
Annex E – AMC 1 Integrity and assurance levels for the Operational Safety Objectives (OSO) paragraph 1.5 provides further information about proposing a standard as an AMC.
Medium level of robustness (SAIL 3)
Lower robustness level requirements to be complied with:
• OSO13.L.I
OSO13.M.A
(a) The Applicant must provide evidence of compliance with the Integrity requirements, which will be assessed by the CAA.
(b) The applicant must have supporting evidence that the required level of performance for any externally provided service required for the safety of the flight may be achieved for the full duration of the mission.
High level of robustness (SAIL 4 to 6)
Lower robustness level requirements to be complied with:
• OSO13.L.I
• OSO13.M.A
OSO13.H.A
The evidence of the externally provided service performance is achieved through demonstrations.
(a) The Applicant must provide evidence of compliance with the Integrity requirements, which will be assessed by the CAA.
GM1 Article 11 Annex E. Operational Safety Objective 13
CAA ORS9 Decision No. 46
GM.OSO13
For the purpose of the UK SORA and this specific OSO, the term “External services supporting UAS operations” encompasses any interaction with an external Service Provider critical for the safety of the flight, e.g.
-
Communication Service Provider (CSP),
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Navigation Service Provider (e.g. Global navigation satellite system),
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UTM Service Providers (including surveillance Supplemental Data Service Provider (SDSP), weather SDSP),
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Externally provided electrical power (e.g. in the case where no emergency backup generator is available and the safety of the flight is dependent on continuous power delivery).
The interface between the UAS Operator and the external services may take the form of a Service Level Agreement (SLA).
GM.OSO13.L.I
Supporting evidence may take the form of a Service-Level Agreement (SLA) or any official commitment that prevails between a Service Provider and the applicant on relevant aspects of the service (including quality, availability, responsibilities).
As an example, if an applicant uses an external surveillance service, they should have evidence available supporting the claim that the service meets performance requirements in Annex D.