# AD 90-26-05: Seat Pan - Type: Airworthiness directive - Status: Current - Products: Boeing 737-300 Series, 737-400 Series, 737-500 Series and 757-200 Series - Effective: December 26, 1990 - Superseded by: Nothing supersedes this AD - Product type: Aircraft, Large airplane - Amendment: 39-6832 - Docket: 90-NM-261-AD - Registered aircraft: 285 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/9B86B62DC1F2AB338625696000723A12.0001 - DRS record last changed: May 30, 2024 - Page: https://openairdocs.org/ad/90-26-05 ## The airworthiness directive 90-26-05 BOEING: Amendment 39-6832. Docket No. 90-NM-261-AD. Applicability: Model 737-300, 737-400, and 737-500 series airplanes, and Model 757- 200 series airplanes; equipped with Transaero P/N 91466 series double flight attendant seats; certificated in any category. Compliance: Required as indicated, unless previously accomplished. To prevent injury to flight attendants, accomplish the following: A. Within 21 days after the effective date of this AD, inspect the front edge of the affected seat pans for areas of abnormal flexibility when hand pressure is applied perpendicular to the seat pan, and for permanent deflection or misfair of the seat pan edge when stowed. 1. If no obvious damage is detected, repeat the inspection at intervals not to exceed 30 days. 2. If any of the above conditions are found, prior to further flight, accomplish one of the following: a. Install a placard stating that the damaged seat is not to be occupied; orb. Replace the seat pan with a new seat pan of the same part number, and continue to inspect at intervals not to exceed 30 days thereafter in accordance with paragraph A. of this AD; or c. Repair the seat pan in a manner approved by the Manager, Seattle Aircraft Certification Office, and continue to inspect at intervals not to exceed 30 days in accordance with paragraph A. of this AD. B. The actions required by paragraph A. of this AD may be terminated upon replacement of affected seat pans with seat pans that have been approved by the Manager, Seattle Aircraft Certification Office, FAA, Transport Airplane Directorate. C. An alternate means 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 submitted directly to the Manager, Seattle ACO, and a copy sent to the cognizant FAA Principal Inspector (PI). The PI will then forward comments or concurrence to the Seattle ACO. D. 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. All persons affected by this directive who have not already received the appropriate service information from the manufacturer may obtain copies upon request to Boeing Commercial Airplane Group, P.O. Box 3707, Seattle, Washington 98124. This information may be examined at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 1601 Lind Avenue S.W., Renton, Washington. This amendment (39-6832, AD 90-26-05) becomes effective on December 26, 1990. ## Affected data sheets (2) (OpenAirDocs) The type certificate data sheets whose models the AD names. - [TCDS A16WE](https://openairdocs.org/tcds/A16WE): The Boeing Company; names 3 of 17 models: 737-500 Series, 737-300 Series, 737-400 Series - [TCDS A2NM](https://openairdocs.org/tcds/A2NM): The Boeing Company; names 1 of 4 models: 757-200 Series ## Registered aircraft it may apply to (OpenAirDocs) Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment. - Aircraft: 285 (285 by airframe model, 0 by engine model) - Makers: Boeing 285 Models with the most aircraft: - [Boeing 757-232](https://openairdocs.org/model/boeing-757-232): 63 aircraft (airframe model) - [Boeing 757-224](https://openairdocs.org/model/boeing-757-224): 40 aircraft (airframe model) - [Boeing 757-222](https://openairdocs.org/model/boeing-757-222): 38 aircraft (airframe model) - [Boeing 757-223](https://openairdocs.org/model/boeing-757-223): 23 aircraft (airframe model) - [Boeing 757-236](https://openairdocs.org/model/boeing-757-236): 20 aircraft (airframe model) - [Boeing 757-251](https://openairdocs.org/model/boeing-757-251): 18 aircraft (airframe model) - [Boeing 757-231](https://openairdocs.org/model/boeing-757-231): 13 aircraft (airframe model) - [Boeing 737-400](https://openairdocs.org/model/boeing-737-400): 8 aircraft (airframe model) - [Boeing 757-200 SERIES](https://openairdocs.org/model/boeing-757-200-series): 7 aircraft (airframe model) - [Boeing 737-500](https://openairdocs.org/model/boeing-737-500): 6 aircraft (airframe model) - [Boeing 757-204](https://openairdocs.org/model/boeing-757-204): 6 aircraft (airframe model) - [Boeing 737-436](https://openairdocs.org/model/boeing-737-436): 6 aircraft (airframe model) - [Boeing 757-225](https://openairdocs.org/model/boeing-757-225): 5 aircraft (airframe model) - [Boeing 737-300](https://openairdocs.org/model/boeing-737-300): 4 aircraft (airframe model) - [Boeing 757-230](https://openairdocs.org/model/boeing-757-230): 4 aircraft (airframe model) - [Boeing 737-490](https://openairdocs.org/model/boeing-737-490): 3 aircraft (airframe model) - [Boeing 737-484](https://openairdocs.org/model/boeing-737-484): 3 aircraft (airframe model) - [Boeing 737-524](https://openairdocs.org/model/boeing-737-524): 3 aircraft (airframe model) - [Boeing 757-258](https://openairdocs.org/model/boeing-757-258): 3 aircraft (airframe model) - [Boeing 757-256](https://openairdocs.org/model/boeing-757-256): 3 aircraft (airframe model) All 28 models: https://openairdocs.org/ad/90-26-05/models.md Every aircraft: https://openairdocs.org/ad/90-26-05/aircraft.md Its text cites no advisory circulars or STCs. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.