AD 92-08-11

92-08-11 BOEING: Amendment 39-8222. Docket No. 91-NM-212-AD.

Applicability: Model 737-300, 737-400, and 737-500 series airplanes, and Model 757-200 series airplanes; equipped with TransAero P/N 91465 series single flight attendant seats identified in TransAero Service Bulletin No. 192, Revision C, dated August 12, 1991, certificated in any category.

Compliance: Required as indicated, unless accomplished previously.

To prevent failure of the seat pans and possible injury to flight attendants, accomplish the following:

(a) Within 60 days after the effective date of this AD, inspect the front edge of the affected seat pans for areas of abnormal flexibility in accordance with paragraph C. of TransAero Service Bulletin No. 192, Revision C., dated August 12, 1991.

(1) If no damage is detected, repeat the inspection at intervals not to exceed 375 flight hours.

(2) If damage is detected, prior to further flight, accomplish either subparagraph (a)(2)(i) or (a)(2)(ii):

(i) Install a placard stating that the damaged seat is not to be occupied; or

(ii) Replace the seat pan with a serviceable seat pan of the same part number, and continue to inspect thereafter at intervals not to exceed 375 flight hours in accordance with paragraph (a) of this AD.

(b) Within 18 months after the effective date of this AD, modify all single flight attendant seat pans in accordance with TransAero Service Bulletin No. 192, Revision C, dated August 12, 1991.

(c) The inspections required by paragraph (a) of this AD may be terminated upon accomplishing the modification described in TransAero Service Bulletin 192, Revision C, dated August 12, 1991.

(d) 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, Seattle Aircraft Certification Office (ACO), FAA, Transport Airplane Directorate.

NOTE: The request should be forwarded through anFAA Principal Maintenance Inspector, who may concur or comment and then send it to the Manager, Seattle ACO.

(e) Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base in order to comply with the requirements of this AD.

(f) The inspection and modification shall be done in accordance with TransAero Service Bulletin No. 192, Revision C, dated August 12, 1991, which contains the following list of effective pages:

Page number Revision level Date

Cover C August 12, 1991

Sheets i, ii, C (Not dated) and iii

iv (None) (Not dated)

1 - 24 (None) (Not dated)

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 TransAero Industries, Inc., 502 North Oak Street, Inglewood, California 90302-2942. 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.

(g) This amendment becomes effective on May 29, 1992.