STANAG 7215 air-to-air refuelling signal lights

What it is

STANAG 7215 is the NATO Standardization Agreement covering air-to-air refuelling signal lights in hose and drogue systems. This is Edition 2, promulgated 25 October 2023, superseding Edition 1 of 27 March 2013.

A STANAG is not the specification

A STANAG is the agreement by which NATO nations commit to implement a standard, not the technical specification itself. STANAG 7215's own text is short and administrative: an aim, two interoperability requirements, and the ratification and reporting machinery. The actual signal-light requirements are specified in a separate publication, ATP-3.3.4.7 Edition B, which the STANAG names as the standard participating nations "agree to implement". Anyone actually designing, fitting or checking a signal-light installation needs ATP-3.3.4.7's own text, not this cover agreement.

What it commits nations to

The stated aim is interoperability: to standardize the signal lights shown to a receiver aircraft during probe-and-drogue air-to-air refuelling, and to make sure the same lights work for crews "operating either with or without the use of night vision imaging systems (NVIS)". Related documents named alongside it cover the probe-drogue interface itself (STANAG 3447), a companion tactical publication (ATP-3.3.4.6), and the general lighting-equipment standard SAE AS25050A.

Who it binds, and how

STANAG 7215 binds nations, not suppliers. It is effective "upon receipt for use by the participating nations and NATO bodies", and becomes binding on a given nation through ratification, recorded in the NATO Standardization Document Database (NSDD). Implementation is a separate, further step: a nation has implemented the STANAG "when [it] has issued instructions that future equipment developed or services contracted will be in accordance with the requirements detailed in the covered standard". For tanker or refuelling equipment that already existed before promulgation, or an aircraft being modified, a nation must instead "identify any and all exceptions to the requirements detailed in the covered standard for these aircraft" - an existing fleet is assessed, not assumed compliant. A supplier meets STANAG 7215, or the ATP-3.3.4.7 requirements it covers, only where a contract or tender says so; the document sets no obligation reaching a supplier directly, and its own "NATO Effective Date (NED)" field reads "Not applicable".

How it's evaluated

STANAG 7215 describes no certification scheme and no audit. What it describes is nations reporting their ratification and implementation status to NATO for the record; nobody is "STANAG 7215 certified", and the document never uses that language. Where a supplier's signal-light equipment does get checked against ATP-3.3.4.7 in practice, the assessor and the evidence required are set by the contract's own quality clause, not by this STANAG.

Standards it references

STANAG 7215 covers ATP-3.3.4.7, the Allied Tactical Publication that carries the actual signal-light requirements. Its "Other Related Documents" also list STANAG 3447 (air-to-air refuelling equipment probe-drogue interface characteristics) and ATP-3.3.4.6, both of which inform rather than bind through this agreement. It also names SAE AS25050A, a general lighting-equipment standard, which sits outside our catalogue. Reviews of STANAG 7215 itself run under AAP-03.

Standards it references

• STANAG 3447Background
• ATP-3.3.4.6Background