AD 88-09-05 R1

88-09-05 R1 DE HAVILLAND, INC.: Amendment 39-9745. Docket 95-NM-266-AD. Revises AD 88-09-05, Amendment 39-5908.

Applicability: Model DHC-8 series airplanes, serial numbers 3 through 79 inclusive, on which Modification 8/0757 has not been installed; certificated in any category.

NOTE 1: This AD applies to each airplane identified in the preceding applicability provision, regardless of whether it has been modified, altered, or repaired in the area subject to the requirements of this AD. For airplanes that have been modified, altered, or repaired so that the performance of the requirements of this AD is affected, the owner/operator must request approval for an alternative method of compliance in accordance with paragraph (b) of this AD. The request should include an assessment of the effect of the modification, alteration, or repair on the unsafe condition addressed by this AD; and, if the unsafe condition has not been eliminated, the request should include specific proposed actions to address it.

Compliance: Required as indicated, unless accomplished previously.

To prevent inadvertent opening of the airstair door and consequent depressurization of the airplane, accomplish the following:

(a) Within 60 days after June 10, 1988 (the effective date of AD 88-09-05, amendment 39-5908), replace the labels marking the location and means of opening the lavatory, in accordance with the Accomplishment Instructions of de Havilland Service Bulletin 8-11-14, Revision `A', dated July 31, 1987; or Revision `B', dated July 1, 1988, or Revision `C', dated September 29, 1995.

(b) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, New York Aircraft Certification Office (ACO), FAA, Engine and Propeller Directorate. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, New York ACO.

NOTE 2: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the New York ACO.

(c) Special flight permits may be issued in accordance with sections 21.197 and 21.199 of the Federal Aviation Regulations (14 CFR 21.197 and 21.199) to operate the airplane to a location where the requirements of this AD can be accomplished.

(d) The replacement shall be done in accordance with de Havilland Service Bulletin 8- 11-14, Revision `A', dated July 31, 1987; or de Havilland Service Bulletin 8-11-14, Revision `B', dated July 1, 1988; or de Havilland Service Bulletin 8-11-14, Revision `C', dated September 29, 1995. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies may be obtained from Bombardier, Inc., Bombardier Regional Aircraft Division, Garratt Boulevard, Downsview, Ontario, Canada M3K 1Y5. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the FAA, New York Aircraft Certification Office, Engine and Propeller Directorate, 10 Fifth Street, Third Floor, Valley Stream, New York; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC.

(e) This amendment becomes effective on October 21, 1996.