Airworthiness Directive · Amendment 39-17664 · Doors
Eurocopter France Helicopters
This AD applies to Eurocopter France (Eurocopter) Model AS350B, AS350BA, AS350B1, AS350B2, AS350B3, AS350C, AS350D, AS350D1, AS355E, AS355F, AS355F1, AS355F2, AS355N, and AS355NP helicopters with sliding doors installed, except those with modification AL.4262, certificated in any category.
We are adopting a new airworthiness directive (AD) for Eurocopter France (Eurocopter) Model AS350B, AS350BA, AS350B1, AS350B2, AS350B3, AS350C, AS350D, AS350D1, AS355E, AS355F, AS355F1, AS355F2, AS355N, and AS355NP helicopters with sliding doors, except those with modification AL.4262. This AD requires removing from service certain part-numbered nuts and washers from the lower ball-joint bolt. This AD was prompted by a report of a sliding door detaching from the helicopter in flight. These actions are intended to prevent loss of the lower ball-joint nut, which could lead to loss of the sliding door and damage to the helicopter.
You are responsible for performing each action required by this AD within the specified compliance time unless it has already been accomplished prior to that time.
(1) Within 165 hours time-in-service, remove each nut, part number (P/N) ASN52320BH060N, and each washer, P/N 23111AG0LE, from the left-hand and right-hand sliding door lower ball-joint bolts and replace them with an airworthy nut and washer.
(2) Do not install a nut, P/N ASN52320BH060N, or washer, P/N 23111AG0LE, on any sliding door lower ball-joint bolt.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
