COUPLING FLANGE (P/N 1121-31541.01) - New Surplus

The 1121-31541.01 is a coupling flange for Airbus Helicopters BK117 and BO105 models. This component joins duct interfaces within pneumatic system assemblies, securing environmental control ducting through V-band joint connections. Typically constructed from aluminum or steel, the flange interfaces with mating duct sections and fastening hardware per SAE AS1960 and AS4751 standards.

Installation requires V-band clamp assembly and torque verification per OEM maintenance manual specifications. Verify part compatibility in your aircraft's Illustrated Parts Catalog before installation.

What is the COUPLING FLANGE (P/N 1121-31541.01)?

The 1121-31541. 01 is a coupling flange for Airbus Helicopters BK117 and BO105 models.

Does the 1121-31541.01 meet AN/MS/NAS aviation specifications?

Aircraft hardware is manufactured to military and aviation specifications. The COUPLING FLANGE conforms to its applicable AN (Air Force-Navy), MS (Military Standard), or NAS (National Aerospace Standard) specification. Contact us for specific specification details.

What material is the 1121-31541.01 manufactured from?

Aviation hardware is available in various materials including cadmium-plated steel, stainless steel, aluminum alloy, and titanium depending on the application. Contact us for material certification and specifications for the 1121-31541.01.

Can I order the 1121-31541.01 in custom quantities?

Yes, we sell hardware in various quantities from single units to bulk lots. The COUPLING FLANGE is available in: New Surplus. Submit an RFQ for volume pricing or call (904) 998-9101 for quantity availability.