# AD 88-21-02: Seat Tracks - Type: Airworthiness directive - Status: Current - Products: Textron 58, 58A, 58P, 58PA, 58TC, 58TCA, 95-B55, 95-B55A, A36, A36TC, B36TC, E55 and 4 more - Effective: October 31, 1988 - Superseded by: Nothing supersedes this AD - Product type: Aircraft, Small airplane - Amendment: 39-6028 - Registered aircraft: 7,103 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8F6C76CDD52B2994862569B3005297C2.0001 - DRS record last changed: January 21, 2026 - Page: https://openairdocs.org/ad/88-21-02 ## The airworthiness directive 88-21-02 BEECH: Amendment 39-6028. Applies to the Beech airplanes listed below, certificated in any category: TABLE 1 MODEL SERIAL NUMBER COMPLIANCE PARAGRAPH F33A CE-621 through CE-1024 (b) F33C CJ-112 through CJ-155 (b) V35B D-9830 through D-10403 (b) A36 E-632 through E-789 E-790 through E-1945 E-1947 through E-2103 E-2105 through E-2110 (a) (a)(b) (a)(b) (a)(b) A36TC, B36TC EA-2 through EA-319 EA-321 through EA-388 (a)(b) (a)(b) 95-B55, 95-B55A TC-1918 through TC-2456 (b) E-55, E-55A TE-1071 through TE-1201 (b) 58, 58A TH-579 through TH-702 TH-703 through TH-1388 TH-1390 through TH-1395 (a) (a)(b) (a)(b) 58P, 58PA TJ-12 through TJ-27 TJ-28 through TJ-435 TJ-437 through TJ-443 (a) (a)(b) (a)(b) 58TC, 58TCA TK-1, TK-2 TK-3 through TK-146 TK-148 through TK-150 (a) (a)(b) (a)(b) Compliance: Required within the next 100 hours time-in-service after the effective date of this AD, unless already accomplished.To prevent failure of the pilots and copilots seat attachment during an emergency landing condition, accomplish the following: (a) For the airplanes identified in Table 1 as requiring Compliance Paragraph (a): Fill the three aft seat positioning holes in the center seat tracks of the pilot and copilot seats in accordance with Beech Service Bulletin Number 2010, Revision 1, dated May 1988. The seat track reinforcement provided in Beech Service Bulletin Number 2233, dated April 1988, may be installed in lieu of filling these holes. (b) For the airplanes identified in Table 1 as requiring Compliance Paragraph (b): (1) Inspect the aft bolts on the two aft feet on both the pilot and copilot seat frame assemblies to insure that a AN960-10 washer has been installed under the nut. If a washer has been installed and the provisions of paragraph (a) have been completed, if applicable, the airplane may be returned to service. (2) If no washer is found per paragraph (b)(1) above, prior to further flight install an AN960-10 washer under the nut, on the lower aft bolt as shown in Service Bulletin No. 2010, Revision 1, dated May 1988. This applies to both the left and right hand sides of the pilot and copilot seat frame assemblies. (c) Airplanes may be flown in accordance with FAR 21.197 to a location where this AD may be accomplished. (d) An equivalent means of compliance with this AD may be used if approved by the Manager, FAA, Wichita Aircraft Certification Office, 1801 Airport Road, Rm 100, Mid-Continent Airport, Wichita, Kansas 67209; Telephone (316) 946-4400. All persons affected by this directive may obtain copies of the documents referred to herein upon request to Beech Aircraft Corporation, Commercial Service, Dept. 52, P.O. Box 85, Wichita, Kansas 67201-0085; or may examine the documents referred to herein at the FAA, Office of the Assistant Chief Counsel, Room 1558, 601 East 12th Street, Kansas City, Missouri 64106. Thisamendment, 39-6028, becomes effective on October 31, 1988. ## Affected data sheets (3) (OpenAirDocs) The type certificate data sheets whose models the AD names. - [TCDS 3A15](https://openairdocs.org/tcds/3A15): Textron Aviation Inc.; names 6 of 27 models: V35B, B36TC, A36, F33A, A36TC, F33C - [TCDS 3A16](https://openairdocs.org/tcds/3A16): Textron Aviation Inc.; names 6 of 21 models: 95-B55, 58, E55, 58A, E55A, 95-B55A - [TCDS A23CE](https://openairdocs.org/tcds/A23CE): Textron Aviation Inc.; names 4 of 4 models: 58TC, 58P, 58TCA, 58PA ## 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: 7,103 (7,103 by airframe model, 0 by engine model) - Makers: Beech 6,384, Raytheon 718, Beech/Goedkerj L 1 Models with the most aircraft: - [Beech A36](https://openairdocs.org/model/beech-a36): 1,907 aircraft (airframe model) - [Beech F33A](https://openairdocs.org/model/beech-f33a): 978 aircraft (airframe model) - [Beech V35B](https://openairdocs.org/model/beech-v35b): 913 aircraft (airframe model) - [Beech 95-B55 (T42A)](https://openairdocs.org/model/beech-95-b55-t42a): 774 aircraft (airframe model) - [Beech 58](https://openairdocs.org/model/beech-58): 726 aircraft (airframe model) - [Raytheon A36](https://openairdocs.org/model/raytheon-a36): 448 aircraft (airframe model) - [Beech 58P](https://openairdocs.org/model/beech-58p): 298 aircraft (airframe model) - [Beech B36TC](https://openairdocs.org/model/beech-b36tc): 225 aircraft (airframe model) - [Beech E-55](https://openairdocs.org/model/beech-e-55): 215 aircraft (airframe model) - [Raytheon 58](https://openairdocs.org/model/raytheon-58): 188 aircraft (airframe model) - [Beech A36TC](https://openairdocs.org/model/beech-a36tc): 174 aircraft (airframe model) - [Raytheon B36TC](https://openairdocs.org/model/raytheon-b36tc): 82 aircraft (airframe model) - [Beech 58TC](https://openairdocs.org/model/beech-58tc): 79 aircraft (airframe model) - [Beech 95-B55](https://openairdocs.org/model/beech-95-b55): 74 aircraft (airframe model) - [Beech F33C](https://openairdocs.org/model/beech-f33c): 17 aircraft (airframe model) - [Beech 58PA](https://openairdocs.org/model/beech-58pa): 3 aircraft (airframe model) - [Beech/Goedkerj L A36](https://openairdocs.org/model/beech-goedkerj-l-a36): 1 aircraft (airframe model) - [Beech 58TCA](https://openairdocs.org/model/beech-58tca): 1 aircraft (airframe model) All 21 models: https://openairdocs.org/ad/88-21-02/models.md Every aircraft: https://openairdocs.org/ad/88-21-02/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.