BS M 32:1969

This standard BS M 32:1969 Specification for dimensions of aircraft accessory drives and mounting pads is classified in these ICS categories:

• 49.050 Aerospace engines and propulsion systems

1.1 This British Standard specifies the design requirements for a range of quick-release couplings with involute spline drive primarily for aircraft engine/gearbox accessories which require to be removed whilst the engine/gearbox is in service.

1.2 The following items are subject to agreement between the engine/gearbox manufacturer and accessory manufacturer:

1. Quill shaft design and length of spline engagement.
2. Linear and geometrical tolerances affecting the splined drive.
3. Angular spacing of oil transfer tubes or location pins if more than one is to be fitted.
4. The provision for accepting the torque reaction.
5. Arrangements for lubricating the splined drive.