AD 92-03-11 R1

Final rule

92-03-11 R1 SAAB-SCANIA: Amendment 39-8248. Docket No. 92-NM-73-AD. Revises AD 92-03- 11, Amendment 39-8166.
Applicability: Model SF-340A series airplanes, serial numbers 004 through 021, 023 through 028, 030 through 035, 037 through 049, and 051 through 159; and Model SAAB 340B, serial numbers 160 through 169, and 171 through 219; equipped with a forward or aft lavatory; certificated in any category.

Compliance: Required as indicated, unless accomplished previously.

To prevent a possible wire overload and resultant smoke and/or fire in the cabin, accomplish the following:

(a) Within 3 months after the effective date of this AD, replace the lavatory circuit breaker, 1MG (1OA size), with circuit breaker, 1MG (7.5A size), and perform an operational test, in accordance with SAAB-SCANIA Service Bulletin 340-25-181, dated March 7, 1991.

(b) An alternative method of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, Standardization Branch, ANM- 113, FAA, Transport Airplane Directorate. The request shall be forwarded through an FAA Principal Maintenance Inspector, who may concur or comment and then send it to the Manager, Standardization Branch, ANM-113.

(c) Special flight permits may be issued in accordance with FAR 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 SAAB-SCANIA Service Bulletin 25- 181, dated March 7, 1991. This incorporation by reference was previously approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR Part 51 as of March 16, 1992 (57 FR 4847, February 10, 1992). Copies may be obtained from SAAB-SCANIA AB, Product Support, S-581.88, Link ping, Sweden. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, Washington; or at the Office of the Federal Register, 1100 L Street NW., Room 8401, Washington, DC.

(e) This amendment becomes effective on May 6, 1992.