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FAA orders · airworthiness directive · historical

86-26-04: Shoulder Harness Adjuster

FAA order 86-26-04 is an airworthiness directive in force since January 6, 1987. The FAA's subject line: Shoulder Harness Adjuster. It names Cessna 120, Cessna 140, Cessna 150, Cessna 170, Cessna 172 Skyhawk, Cessna 175 Skylark, Cessna 177 Cardinal, Cessna 180 Skywagon, Cessna 182 Skylane, Cessna 185 Skywagon, Cessna 190, Cessna 195, Cessna 206 Stationair, Cessna 207 Skywagon 207, Cessna 210 Centurion, Cessna 310, Cessna 336, Cessna 337 Skymaster, Cessna A185 Skywagon, Cessna P172, Cessna P206 Super Skylane, Cessna T207, Cessna T210 Turbo Centurion, Cessna T337, Cessna TP206, Cessna TU206, Cessna U206 Stationair: about 59,441 aircraft on the U.S. register today across them, though an order usually covers particular versions or serial numbers rather than every one. System: cabin, seats and restraints.

What it applies to as the FAA lists it

Kind of product
Aircraft
Makes
Cessna Aircraft Company, The; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Reims Aviation S.A.
Models
120, 140, 140A, 150 Model/Series (all), 150A, 150B, 150C, 150D, 150E, 150F, 150G, 150H, 150J, 150K, 150L, 170, 170A, 170B, 172 Model/Series (all), 172A, 172B, 172C, 172D, 172E, 172F, 172F (USAF T-41A), 172G, 172H, 172H (USAF T-41A), 172I, 172K, 175, 175A, 175B, 175C, 177, 177A, 177B, 180 Model/Series (all), 180A, 180B, 180C, 180D, 180E, 180F, 180G, 180H, 182 Model/Series (all), 182A, 182B, 182C, 182D, 182E, 182F, 182G, 182H, 182J, 182K, 182L, 182M, 182N, 185 Model/Series (all), 185A, 185B, 185C, 185D, 185E, 190, 195, 195A, 195B, 206, 207, 210-5 (205), 210-5A (205A), 210A, 210B, 210C, 210D,...
On this site
Cessna 120 661 registered
Cessna 140 1,838 registered
Cessna 150 7,994 registered
Cessna 170 2,085 registered
Cessna 172 Skyhawk 20,670 registered
Cessna 175 Skylark 926 registered
Cessna 177 Cardinal 2,158 registered
Cessna 180 Skywagon 2,606 registered
Cessna 182 Skylane 11,828 registered
Cessna 185 Skywagon 227 registered
Cessna 190 74 registered
Cessna 195 437 registered
Cessna 206 Stationair 213 registered
Cessna 207 Skywagon 207 115 registered
Cessna 210 Centurion 1,526 registered
Cessna 310 1,410 registered
Cessna 336 35 registered
Cessna 337 Skymaster 372 registered
Cessna A185 Skywagon 1,372 registered
Cessna P172 23 registered
Cessna P206 Super Skylane 163 registered
Cessna T207 65 registered
Cessna T210 Turbo Centurion 1,284 registered
Cessna T337 193 registered
Cessna TP206 25 registered
Cessna TU206 343 registered
Cessna U206 Stationair 798 registered

Dates and paperwork

In force since
January 6, 1987
Docket
Unknown
Replaced by
2004-19-01
Status
Historical
The FAA's document
Read the order on the FAA's site

The order itself the regulatory text, as published

Show the full text (3,763 characters)
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.

Related safety bulletins advice on the same designs, not orders

2026-03-242026-08 · Floats
2025-07-282025-07 · Reciprocating Engine Supercharger
2022-12-06CE-19-01 R1 · Engine Oil and Airplane Hour Meter; Pressure Switch Failure
2021-08-26AIR-21-16 · FLIGHT COMPARTMENT EQUIPMENT, Cessna Seat Back Attachment Bolt Inspection
2020-05-29AIR-20-10 · AD 2020-03-16 Alternative Methods of Compliance and FAQ

Source: FAA Dynamic Regulatory System, airworthiness directives. The FAA's document is the authority; the register counts are this site's, from the FAA register of October 7, 2026. Connections as data: /graph/directive/86-26-04.json · aircraft systems.