MODUK DEF STAN 00-970: PART 9 PDF

The mandatory requirements set out in this standard are those basic requirements needed for the design and development of airworthy RPAS for all three UK Armed Services.

In addition to the mandatory requirements set out in this document, the airworthiness standards set out in the following are also mandated:

NATO STANAG 4671 Unmanned Aerial Vehicles System Airworthiness Requirements (USAR) Edition 2;

NATO STANAG 4702 Rotary Wing Unmanned Aerial Systems Airworthiness Requirements (To be published);

NATO STANAG 4703 Light Unmanned Aircraft Systems Airworthiness Requirements (To be published);

NATO STANAG 4738 Unmanned Aerial Vehicle System Airworthiness Requirements for Light Vertical Take Off and Landing Aircraft (To be published);

Supplemented by the following UK national reservations.

NB the terms RPAS, RPAV as used in Def Stan 00-970 and UAS, UAV as used in the NATO STANAG are interchangeable.

UK national reservations STANAG 4671:

Amend USAR paragraph U50. Insert new paragraph U50(c) Demonstrate that there is adequate margin (e.g. 15%, to be agreed with the Certifying Authority) between V_s and V_{min FCS} (i.e. to take account of gust) and that V_{min FCS} is robust.

Insert after USAR paragraph 201(ii). iii) V_minDEMO to be equivalent to V_minFCS

Amend USAR paragraph AMC.1309(b). Insert the additional sentence at (5)(c)(i). more severe criteria may be needed for large aircraft;

Insert the additional sub-paragraphs after (5)(c)(1).

For large aircraft from 5,700kg up to 20,000kg MTOW (with the exception of propeller-driven twin-engine RPAS, refer paragraph ii). At RPAV system level, the combination of all Catastrophic failure conditions is characterised by an occurrence of 10^-6 per flying hour or less (with the calculation method subject to Certifying Authority agreement).

For propeller-driven twin-engine RPAS from 8,618kg up to 20,000kg MTOW, at RPAV system level, the combination of all Catastrophic failure conditions is characterised by an occurrence of 10-6 per flying hour or less (with the calculation method subject to Certifying Authority agreement).

In the event that there are discrepancies in the airworthiness requirements contained in the NATO STANAG and Def Stan 00-970 Part 9 then the requirements in Def Stan 00-970 are to take precedence. However, in such circumstances MAA-Cert-ADS1-DS970 is to be advised.

Unmanned dirigibles – Until the release of an EASA Certification Specification compliance with the requirements of either of the documents referenced within Part 15 for the design of dirigibles will be considered by the authority; however the requirements specific to RPAS (e.g. DATA Link, GCS) within this document are mandated.

At present this standard does not cover the following:

Aircraft (with a previously issued Design Certificate and a Military Aircraft Release) that have been converted from a manned to an unmanned role.