Airworthiness Directive · Amendment 39-11413 · Eurocopter France Model AS 332C, L, and L1 Helicopters
Eurocopter France Model AS 332C, L, and L1 Helicopters
Model AS 332C, L, and L1 helicopters, with epicyclic modules, part number 332A32-2007-00 or -01, with serial numbers with the prefix of "M", from 100 through 689 or 3000 through 3048, installed, certificated in any category.
This amendment adopts a new airworthiness directive (AD), applicable to Eurocopter France Model AS 332C, L, and L1 helicopters, that requires a one-time inspection of the length of the main gearbox epicyclic module upper casing bearing attachment bolts (attachment bolts), and if they exceed a certain length, replacing the epicyclic module to preclude a potential interference between the attachment bolts and the 2nd stage planet gear cage web. This amendment is prompted by a report of interference between the attachment bolts and the second stage planet gear cage web of the epicyclic module in the main gearbox. The actions specified by this AD are intended to prevent failure of the second stage planet gear of the main gearbox, loss of main rotor drive and subsequent loss of control of the helicopter.
