78-24-06 R1 BELL: Amendment 39-3358 as amended by Amendment 39-4032. Applies to Bell Models 206L and 206L-1 helicopters, certificated in all categories (Airworthiness Docket No. 78-ASW-53).
Compliance required as indicated, unless previously accomplished. To prevent possible failure of the horizontal stabilizer, P/N 206-023-119, all dash numbers, accomplish the following:
(a) Within the next 10 hours' time in service after the effective date of this AD, modify the left and right upper stabilizer supports, P/N 206-023-100-009 and -010, respectively, in accordance with Bell Helicopter Textron Service Bulletin 206L-78-3 dated October 23, 1978, or Bell Helicopter Textron Alert Service Bulletin 206L-80-16 dated November 17, 1980, or FAA approved equivalent, so that the critical area can be checked.
(b) Before the first flight of each day after compliance with paragraph (a), visually check the stabilizer skin area exposed by the cutouts, in the upper stabilizer supports, forcracks.
(1) If a crack is found, remove and replace the horizontal stabilizer before further flight.
(2) If no cracks are found, continue the repetitive check specified above.
(c) The checks required by this AD may be performed by the pilot.
NOTE: For the requirements regarding the listing of compliance and method of compliance with this AD in the aircraft's permanent maintenance record, see FAR 91.173.
The manufacturer's specifications and procedures identified and described in this directive are incorporated herein and made a part hereof pursuant to 5 U.S.C. 552(a)(1). All persons affected by this directive who have not already received these documents from the manufacturer may obtain copies upon request to the Service Manager, Bell Helicopter Textron, P.O. Box 482, Fort Worth, Texas 76101. These documents may also be examined at the Office of the Regional Counsel, Southwest Region, FAA, 4400 Blue Mound Road, Fort Worth, Texas, and at FAA Headquarters, 800 Independence Avenue, S.W., Washington, D.C. A historical file on this AD which includes the incorporated material in full is maintained by the FAA at its headquarters in Washington, D.C., and at the Southwest Regional Office in Fort Worth, Texas.
Amendment 39-3358 became effective December 5, 1978.
This amendment 39-4032 becomes effective May 11, 1981.