# AD 86-26-04: Shoulder Harness Adjuster - Type: Airworthiness directive - Status: Historical - Products: Cessna Aircraft Company, The 120, 140, 140A, 150 Model/Series (all), 150A, 150B, 150C, 150D, 150E, 150F, 150G, 150H and 125 more - Effective: January 6, 1987 - Superseded by: [AD 2004-19-01](https://openairdocs.org/ad/2004-19-01) - Product type: Aircraft, Small airplane - Amendment: 39-5503 - Registered aircraft: 27,906 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A461BCF41D743B9E862569BA004BC822.0001 - DRS record last changed: August 7, 2025 - Page: https://openairdocs.org/ad/86-26-04 ## The airworthiness directive 86-26-04 CESSNA: Amendment 39-5503. Applies to the following airplanes certificated in any category: MODELS SERIAL NUMBERS 120, 140 All 140A All 150 17001 thru 17,999; 59001 thru 59018 150A, 150B, 150C, 150D 150E, 150F, 150G, 150H 150J, 150K, 150L 15059019 thru 15072003 F150F, F150G, F150H F150-0001 thru F150-0529 F150K F15000530 thru F15000658 170, 170A, 170B All 172, 172A 28,000 thru 29,999 36,000 thru 36,999 46,001 thru 47,746 172B, 172C, 172D, 172E, 172F, 172G, 172H, 172I, 172K 17247747 thru 17259223 F172D, Fl72E, F172F, F172G F172-0001 thru Fl72-0654 F172H F17200655 thru F17200754 FR172E, FR172F, FR172G FR1720000l thru FR17200225 P172D All 175, 175A, 175B, 175C All 177, 177A, 177B 17700001 thru 17701530 180, 180A 30000 thru 32999 180A, 180B, 180C, 50,000 thru 50911 180D, 180E, 180F, 180G, 180H 18050912 thru 18052175 182, 182A, 182B, 33,000 thru 34999 182C 51,001 thru 53,007 182D, 182E, 182F 182G, 182H, 182J 182K, 182L, 182M, 182N 18253008 thru 18260445 185, 185A, 185B, 185C 185D, 185E, A185E 185-0001 thru 185-1599 A185E 18501600 thru 18501832 190, 195, 195A, 195B All 205, 205A All 206 All U206, U206A, U206B, U206C, U206D, TU206A, TU206B, TU206C, TU206D 206-0276 thru 206-1444 U206E, TU206E 20601445 thru 20601587 P206, P206A, P206B, P206C, P206D, TP206A, TP206B, TP206C, TP206D P206-0001 thru P206-0603 P206E, TP206E P20600604 thru P20600647 207, T207 2070001 thru 20700190 210 57001 thru 57575 210A, 210B, 210C, 210D 210E, 210F, 210G, 210H, 210J, 210K, T210K 21057576 thru 21059351 T210G, T210H, T210J All 336 All 337, 337A, 337B, 337C 337D, 337E, T337B, T337C, T337, T337E 33700001 thru 33701316 Compliance: Required within the next 25 hours time-in-service (TIS) after the effective date of this AD, unless already accomplished. To prevent slippage of the pilot/co-pilot shoulder harnesses, accomplish the following on airplanes which have had the shoulder harnesses installed by any of the following Cessna Accessory Kits (AK): AK140-10 AK182-75 AK210-172 AK150-7 AK195-10 AK210-173 AK150-121 AK210-77 AK210-174 AK170-10 AK210-93 AK336-32 AK177-10 AK210-171 AK336-36 AK336-103 (a) Inspect the upper shoulder harness adjuster in accordance with Cessna Single Engine Service Bulletin, SEB86-8 or Cessna Multi-Engine Service Bulletin, MEB86-22, as appropriate, for the presence of a retainer spring. If installed, prior to further flight, remove the spring and stamp out the -401 identification number in accordance with the service bulletin instructions. NOTE: There are two adjusters in each shoulder harness assembly. This AD applies only to the upper adjuster. (b) Airplanes may be flown in accordance with FAR 21.197 to a location where this AD may be accomplished. (c) The holder of a pilot certificate issued under Part 61 of the Federal Aviation Regulations (FAR) on any airplane owned or operated by him may conduct the inspections and modifications required by this AD on any airplane not used in air carrier service. The person accomplishing this AD must make the appropriate maintenance record entry as prescribed by FAR 91.173. (d) Any equivalent method of compliance with this AD, if used, must be approved by the Manager, Wichita Aircraft Certification Office, Federal Aviation Administration, 1801 Airport Road, Room 100, 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 Cessna Aircraft Company, Customer Service, P.O. Box 1521, Wichita, Kansas 67201; or FAA, Office of the Regional Counsel, Room 1558, 601 East 12th Street, Kansas City, Missouri 64106. This amendment becomes effective January 6, 1987. ## Affected data sheets (19) (OpenAirDocs) The type certificate data sheets whose models the AD names. - [TCDS A4CE](https://openairdocs.org/tcds/A4CE): Textron Aviation Inc.; names 23 of 29 models: TP206B, TP206C, TU206A, U206, P206C, P206E, TP206A, 206… - [TCDS 3A21](https://openairdocs.org/tcds/3A21): Textron Aviation Inc.; names 16 of 28 models: 210J, 210D, 210-5A (205A), 210H, 210B, 210E, 210-5 (205), T210G… - [TCDS 3A13](https://openairdocs.org/tcds/3A13): Textron Aviation Inc.; names 13 of 23 models: 182D, 182A, 182J, 182B, 182L, 182G, 182N, 182E… - [TCDS 3A19](https://openairdocs.org/tcds/3A19): Textron Aviation Inc.; names 11 of 18 models: 150L, 150B, 150D, 150E, 150K, 150C, 150G, 150J… - [TCDS 3A12](https://openairdocs.org/tcds/3A12): Textron Aviation Inc.; names 10 of 18 models: 172F (USAF T-41A), 172K, 172G, 172A, 172H (USAF T-41A), 172D, 172C, 172E… - [TCDS 5A6](https://openairdocs.org/tcds/5A6): Textron Aviation Inc.; names 8 of 11 models: 180E, 180F, 180H, 180A, 180B, 180D, 180G, 180C - [TCDS A6CE](https://openairdocs.org/tcds/A6CE): Textron Aviation Inc.; names 8 of 19 models: T337B, T337E, 337D, 337C, 337A, T337C, 337E, 337B - [TCDS 3A24](https://openairdocs.org/tcds/3A24): Textron Aviation Inc.; names 6 of 8 models: 185B, 185E, 185C, A185E, 185A, 185D - [TCDS 3A17](https://openairdocs.org/tcds/3A17): Textron Aviation Inc.; names 5 of 12 models: 175, 175B, P172D, 175C, 175A - [TCDS A4EU](https://openairdocs.org/tcds/A4EU): Textron Aviation Inc.; names 5 of 11 models: F172F, F172H, F172E, F172G, F172D - [TCDS A-790](https://openairdocs.org/tcds/A-790): Textron Aviation Inc.; names 4 of 4 models: 195A, 190, 195B, 195 - [TCDS A-799](https://openairdocs.org/tcds/A-799): Textron Aviation Inc.; names 3 of 3 models: 170, 170A, 170B - [TCDS A13CE](https://openairdocs.org/tcds/A13CE): Textron Aviation Inc.; names 3 of 3 models: 177, 177A, 177B - [TCDS A13EU](https://openairdocs.org/tcds/A13EU): Textron Aviation Inc.; names 3 of 14 models: F150G, F150H, F150K - [TCDS A18EU](https://openairdocs.org/tcds/A18EU): Textron Aviation Inc.; names 3 of 6 models: FR172G, FR172E, FR172F - [TCDS A-768](https://openairdocs.org/tcds/A-768): Textron Aviation Inc.; names 2 of 2 models: 140, 120 - [TCDS A16CE](https://openairdocs.org/tcds/A16CE): Textron Aviation Inc.; names 2 of 4 models: 207, T207 - [TCDS 5A2](https://openairdocs.org/tcds/5A2): Textron Aviation Inc.; names 1 of 1 models: 140A - [TCDS A2CE](https://openairdocs.org/tcds/A2CE): Textron Aviation Inc.; names 1 of 1 models: 336 ## 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: 27,906 (27,906 by airframe model, 0 by engine model) - Makers: Cessna 27,893, Reims Aviation S A 5, P Z L Koliber 4, Cessna Wren 3, Cessna Conroy 1 Models with the most aircraft: - [Cessna 140](https://openairdocs.org/model/cessna-140): 1,603 aircraft (airframe model) - [Cessna 150L](https://openairdocs.org/model/cessna-150l): 1,447 aircraft (airframe model) - [Cessna 170B](https://openairdocs.org/model/cessna-170b): 1,299 aircraft (airframe model) - [Cessna 150F](https://openairdocs.org/model/cessna-150f): 1,063 aircraft (airframe model) - [Cessna 172K](https://openairdocs.org/model/cessna-172k): 1,026 aircraft (airframe model) - [Cessna 150G](https://openairdocs.org/model/cessna-150g): 977 aircraft (airframe model) - [Cessna 177B](https://openairdocs.org/model/cessna-177b): 843 aircraft (airframe model) - [Cessna 182A](https://openairdocs.org/model/cessna-182a): 784 aircraft (airframe model) - [Cessna 172H](https://openairdocs.org/model/cessna-172h): 780 aircraft (airframe model) - [Cessna 150H](https://openairdocs.org/model/cessna-150h): 756 aircraft (airframe model) - [Cessna 172G](https://openairdocs.org/model/cessna-172g): 722 aircraft (airframe model) - [Cessna 172F](https://openairdocs.org/model/cessna-172f): 717 aircraft (airframe model) - [Cessna 120](https://openairdocs.org/model/cessna-120): 660 aircraft (airframe model) - [Cessna 150J](https://openairdocs.org/model/cessna-150j): 659 aircraft (airframe model) - [Cessna 172E](https://openairdocs.org/model/cessna-172e): 617 aircraft (airframe model) - [Cessna 175](https://openairdocs.org/model/cessna-175): 536 aircraft (airframe model) - [Cessna 170A](https://openairdocs.org/model/cessna-170a): 513 aircraft (airframe model) - [Cessna 182J](https://openairdocs.org/model/cessna-182j): 487 aircraft (airframe model) - [Cessna 172D](https://openairdocs.org/model/cessna-172d): 471 aircraft (airframe model) - [Cessna 177](https://openairdocs.org/model/cessna-177): 446 aircraft (airframe model) All 129 models: https://openairdocs.org/ad/86-26-04/models.md Every aircraft: https://openairdocs.org/ad/86-26-04/aircraft.md ## Related documents - [AD 2004-19-01](https://openairdocs.org/ad/2004-19-01): Upper shoulder harness adjusters · Cessna F150G, F150H, F150J and 129 more. Effective Nov 1, 2004. Supersedes this AD 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.