82-24-06 R1 BRITTEN-NORMAN: Amendment 39-4506 as amended by Amendment 39- 4559. Applies to Models BN-2, BN-2A, BN-2A-6, BN-2A-8, BN-2A-9, BN-2A-26, BN-2A-27, BN2A MKIII, BN2A MKIII-2, and BN2A MKIII-3 (all serial numbers) airplanes certificated in any category.
COMPLIANCE: Required as indicated unless already accomplished.
To prevent possible failure of the carburetor air box shutter, accomplish the following:
(a) Within the next 100 hours time-in-service after the effective date of this AD and at intervals not exceeding 100 hours time-in-service thereafter:
(1) Visually inspect the carburetor air box shutters for cracks or excessive bolt hole wear in accordance with procedures set forth in the "Inspection" section of Pilatus Britten-Norman Limited Service Bulletin Number BN-2/SB.144, Issue: 1, dated July 10, 1980 (hereinafter referred to as the service bulletin).
(A) Prior to further flight, replace any carburetor air box shutter found cracked with newshutter in accordance with "Rectification" section of the service bulletin.
(B) If excessive bolt hole wear is found prior to further flight, modify the shutter in accordance with the "Rectification" section of the service bulletin.
(b) On or before November 1, 1983, replace or modify the air box shutter in accordance with paragraph (a)(1)(A) or (a)(1)(B) of this AD.
(c) The inspection required by paragraph (a) (1) may be discontinued when the modifications or replacements prescribed in paragraphs (a)(1)(A) and (a)(1)(B) of this AD are accomplished.
(d) The airplane may be flown in accordance with FAR 21.197 to a location where this AD may be accomplished.
(e) An equivalent means of compliance with this AD may be used if approved by the Manager, Aircraft Certification Staff, AEU-100, Europe, Africa, and Middle East Office, FAA, c/o American Embassy, Brussels, Belgium.
Amendment 39-4506 became effective on December 2, 1982.
This Amendment 39-4559 becomes effective February 7, 1983.