AD 93-02-09

Final rule

93-02-09 SAAB-SCANIA: Amendment 39-8492. Docket 92-NM-121-AD.
Applicability: Model SAAB SF340A series airplanes, serial numbers 004 through 159, inclusive; and Model SAAB 340B series airplanes, serial numbers 160 through 339, inclusive; certificated in any category.

Compliance: Required as indicated, unless accomplished previously.

To prevent damage/disbonding of the fuselage skin due to overheat, and subsequent reduced structural capability, accomplish the following:

(a) Within 3 months after the effective date of this AD, relocate the sensor loops of the bleed air leak detection system, in accordance with SAAB-SCANIA Service Bulletin SAAB 340-36-006, dated August 6, 1992.

(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, Standardization Branch, ANM-113, FAA, Transport Airplane Directorate. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, Standardization Branch, ANM-113.

NOTE: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the 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 relocation shall be done in accordance with SAAB-SCANIA Service Bulletin SAAB 340-36-006, dated August 6, 1992. 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 SAAB-SCANIA AB, SAAB Aircraft 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, 800 North Capitol Street, NW., suite 700, Washington, DC.

(e) This amendment becomes effective on March 26, 1993.