AD NUMBER: 2005-21-04
MANUFACTURER: Bell
SUBJECT:Airworthiness Directive 2005-21-04
SUMMARY:This amendment adopts a new airworthiness directive (AD) for Bell Helicopter Textron (Bell) Model 47D1, 47G, 47G-2, 47G-2A, 47G-2A-1, 47G-3, 47G-3B, 47G-3B-1, 47G-3B-2, 47G-3B-2A,47G-4, 47G-4A, 47G-5, 47G-5A and Coastal Helicopters, Inc. Model OH-13H (Tomcat Mark 5A,6B, 6C) helicopters that have a certain scissors assembly or weld assembly scissors bracket installed.

The AD requires, within 60 days, determining and recording the total hours time inservice(TIS) for each Parts Manufacturer Approval (PMA)-produced scissors assembly andweld assembly scissors bracket and establishes a life limit for each affected part. This amendment is prompted by the need to establish a life limit on scissors assemblies and weld assembly scissors brackets produced under PMA No. PQ808SW or installed per SupplementalType Certificate (STC) No. SH2772SW. The actions specified by this AD are intended toestablish a life limit to prevent using a scissors assembly or weld assembly scissors bracket pastit's life limit, which could result in failure of the part and subsequent loss of control of the helicopter.

FMI: www.avantext.com/DailyADIndex.ASP?AD=20052104