Windsocks for MOD and Defence Aerodromes
UK military aerodromes are regulated to standards broadly similar to those of civil licensed aerodromes, but with their own regulatory framework and specific procurement considerations. The Military Aviation Authority (MAA) sets the standards; the Defence Aerodrome Manual (DAM) is the operational reference for individual stations; and the procurement landscape for MOD-related supply carries its own requirements.
Piggotts has manufactured specialist fabric and aviation products in the UK since 1780. We understand the documentation, specification and supply requirements of defence procurement, and we hold stock in sizes appropriate for military aerodrome applications.
Regulatory framework
Military Aviation Authority (MAA): The MAA is the UK government organisation responsible for regulating all military aviation in the UK. MAA Regulatory Publications set the design and maintenance standards for defence aerodromes. These standards are broadly aligned with civil aerodrome requirements and ICAO Annex 14, but are applied through the MAA’s own regulatory framework rather than through CAA CAP 168 directly.
Defence Aerodrome Manual (DAM): Each MOD aerodrome publishes a bespoke Defence Aerodrome Manual, which provides the detailed operational requirements for that station including visual aids and wind direction indicators. The DAM is based on the MAA’s template but is adapted to the specific characteristics of the aerodrome, its aircraft types and operational profile.
ICAO Annex 14 alignment: As confirmed in MOD and MAA documentation, government aerodrome design and maintenance standards are broadly similar to those of civil licensed aerodromes. The physical specification for wind direction indicators, including minimum sock dimensions, colour standards and illumination requirements for night operations, follows the same ICAO Annex 14 baseline that underpins CAA CAP 168. Where waivers or exemptions apply, these are documented by the Aerodrome Operator in the DAM.
JSP 360: JSP 360 governs the use of military aerodromes by civil aircraft. Where civil operators use MOD aerodromes, the standards applicable to visual aids will be communicated to the operator as part of the terms and conditions of use.
What military aerodromes require
The wind direction indicator requirements for a military aerodrome follow from ICAO Annex 14 as applied through MAA publications and the station DAM. In practice:
12ft (3.6m) windsocks are the standard specification for licensed or certificated military aerodromes operating fixed-wing aircraft, consistent with ICAO Annex 14’s minimum dimensions
Frangible masts are the standard for airside windsock poles at military aerodromes: they are designed to disintegrate on aircraft contact rather than causing structural damage to the aircraft. These are specified in red and white stripes to distinguish them as aerodrome obstacles
Illumination is required for night operations, with the specification aligned to ICAO Annex 14 requirements
Helipad windsocks on MOD helidecks follow the CAP 437 framework for offshore installations or ICAO Annex 14 Volume II for onshore helicopter operations, depending on the nature of the site
Procurement considerations
Defence procurement carries its own documentation and compliance requirements. Piggotts is a UK manufacturer with a long history of supply to public sector and regulated clients. We can provide:
- Full material and product specifications for procurement files
- ICAO Annex 14 / MAA alignment documentation on request
- Certificate of conformity with orders
- Volume pricing for station or estate-wide procurement
Our Safeguard Windsock in 12ft with stainless steel fittings is the standard aerodrome specification, available in standard and striped formats. Frangible mast supply and installation support is available by arrangement, contact our team for details.
Maintenance
Military aerodromes will typically have established visual aids inspection regimes built into the station’s airfield inspection programme. Biennial airfield inspections are a standard part of the MOD’s forward maintenance register process, but windsock condition should be checked in the daily airfield inspection and remedied promptly when degradation is found. Our airfield windsock maintenance guide aligns with established aerodrome inspection practice.
Browse aviation windsocks | Request a quote for defence supply
FAQ's
Do military aerodromes use the same windsocks as civil aerodromes?
Broadly yes. MAA standards are aligned with ICAO Annex 14, which underpins both military and civil aerodrome wind direction indicator requirements. The regulatory framework is different (MAA vs CAA) but the physical specification for the windsock is very similar.
What is a frangible windsock mast?
A frangible mast is designed to break up on aircraft contact rather than damage the aircraft. They are the required mast type for airside windsock installations at aerodromes. They are typically striped red and white as aerodrome obstacle marking. Piggotts can advise on frangible mast options for your installation.
Can Piggotts supply to MOD contracts?
Yes. We are a UK manufacturer with experience of regulated and public sector supply. We can provide all standard procurement documentation including product specs, certificates of conformity and material data sheets. Contact our team to discuss your requirements.
What size windsock does a military aerodrome need?
The ICAO Annex 14 minimum of 3.6m (12ft) with a 0.9m mouth is the standard for military aerodromes operating fixed-wing aircraft. Helicopter pads and minor facilities may use smaller sizes. See our size guide for the full breakdown.
Are illuminated windsocks required at military aerodromes?
Yes, where the aerodrome conducts night operations. ICAO Annex 14 and MAA standards require wind direction indicators to remain visible in darkness.