AD Number: DCA/AS355/56
Subject: RH Cabin Vibration Damper Assembly –
Inspection and Replacement Applicability: Model AS 355 E, F, F1, F2 and N
aircraft fitted with a cabin vibration damper assembly installed on
the starboard side of the aircraft and an automatic flight control
system. Effective Date: 17 June 2005 Requirement: To prevent the failure of the blade
of the cabin vibration damper assembly, which could lead to the
failed part interfering with the trim actuator rod, resulting in
the jamming of the flight controls, accomplish the following:
1. Visually inspect the visible areas of the cabin vibration damper
assembly blade for cracks, per paragraph 2.B.1. of EUROCOPTER AS
355 Alert Telex 05.00.46.
2. Replace cracked blades per paragraph 2.B.1. of Alert Telex
(DGAC AD UF-2005-102 refers)
Compliance: 1. At every daily post flight inspection.
2. Before further flight. Note: This AD is prompted by advice from the
manufacturer and the French Airworthiness
Authorities after a vibration damper failed in flight. The
investigation revealed the
failed components could cause interference with the flight
controls. This AD should
be accomplished by adding the pilot’s inspection requirement
to the aircraft tech log.