AD/BELL 47/101 - Scissors Assembly and Weld Assembly Scissors Bracket (Cth)

AIRWORTHINESS DIRECTIVE For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.001(1) of CASR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

Bell Helicopter Textron 47 (All Variants) Series Helicopters AD/BELL 47/101 Scissors Assembly and Weld 13/2005 DM Assembly Scissors Bracket

Applicability: 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, and 47G-5A helicopters; and, Coastal Helicopters Inc. OH-13H (Tomcat Mark 5A, 6B, or 6C) helicopters:

Equipped with scissors assembly part numbers 74-150-949-9, or 74-150-949-5, 74-150-249-5M; or,

Equipped with weld assembly scissors bracket part number 74-150-117-13M.

All Model 47 series helicopters not listed above that are equipped with the affected parts that were produced under PMA No. PQ808SW or installed under STC No. SH2772SW; Requirement: Determine and record on the service record or equivalent record, the total hours time in service of each affected part.

If the hours time in service cannot be determined, or if the total hours time in service is 5,000 or more hours, before further flight, replace the affected part with a new part or a serviceable part with known hours time in service.