What the FAA has ordered
An airworthiness directive is an order: when the FAA finds an unsafe condition in a design, it tells the owners of every aircraft, engine or propeller of that design what to inspect, repair or replace, and by when. 20,194 are on file, 291 of them issued as emergencies, 286 so far this year. Each one here is linked to the model families and engine series it names, with the number of aircraft on the register today.
20 orders on engine on the Cessna 172 Skyhawk family newest first
The list behind a number on the Cessna 172 Skyhawk page. Every order.
| Order | In force | Applies to | What it is about | System |
|---|---|---|---|---|
| 2018-02-04 | 2018-02-21 | Aerospace Welding Minneapolis Inc, Textron Aviation Inc. A1754001-23, A1754001-25, 172, 172R and 2 more | Exhaust Noise Suppressor | Engine |
| 2013-11-11 | 2013-08-01 | Cessna Aircraft Company 172R, 172S, 182S, 182T and 3 more | Engine Oil Pressure | Engine |
| 2011-06-02 | 2011-05-26 | Cessna Aircraft Company 172F (USAF T-41A), 172G, 172H (USAF T-41A), 172I and 15 more | Engine | Engine |
| 2008-26-10 | 2009-01-05 | Cessna Aircraft Company 172, 172A, 172B, 172C and 178 more | Alternate static air source selector valve | Engine |
| 2008-10-02 | 2008-05-12 | Cessna Aircraft Company 172, 172R, 172RG, 172S and 63 more | Part number identification placard | Engine |
| 2007-08-03 | 2007-05-02 | Cessna Aircraft Company 172R, 172S, 182T, 206H and 2 more | Flexible fuel hoses | Engine |
| 2007-05-10 | 2007-04-11 | Cessna Aircraft Company 172R, 172S, 182S, 182T and 3 more | Steel lock rod/bar on both crew seat back cylinder lock assemblies | Engine |
| 2006-17-04 | 2006-09-01 | Cessna Aircraft Company 172R, 172S, 182T, 206H and 2 more | Flexible fuel hoses located in the engine compartment | Engine |
| 2006-12-07 | 2006-07-11 | Aerostar Aircraft Corporation, Aircraft Parts & Development Corp. AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A, AEIO-320-E1B and 385 more | ECi cylinder assemblies | Engine |
| 2001-06-17 | 2001-04-20 | Cessna Aircraft Company 172R, 172S | Engine Idle Speed and Fuel Control Mixture Setting | Engine |
| 2000-04-01 | 2000-03-11 | Cessna Aircraft Company 172R, 172S, 182S, 206H and 1 more | Oil Pressure Switch | Engine |
| 99-27-02 | 2000-01-21 | Cessna Aircraft Company 170B, 172, 172A, 172B and 35 more | Fuel Selector Valves | Engine |
| 98-02-05 | 1998-02-23 | Cessna Aircraft Company 172R | Engine Exhaust Muffler | Engine |
| 96-12-22 | 1996-07-31 | Bellanca Aircraft Corporation, Cessna Aircraft Company CH-300 Pacemaker, 120, 140, 140A and 360 more | Full Flow Engine Oil Adapter | Engine |
| 90-06-03 R1 | 1991-03-27 | Cessna Aircraft Company 172, 172A, 172B, 172C and 15 more | Exhaust Heater/Muffler Assembly | Engine |
| 86-24-07 | 1987-01-07 | Cessna Aircraft Company 150C, 150D, 150E, 150F and 141 more | Engine Controls Installation | Engine |
| 82-07-02 | 1982-04-08 | Cessna Aircraft Company 170A, 170B, 172, 172A and 19 more | Engine Crankcase Breather | Engine |
| 81-15-03 | 1981-07-20 | Cessna Aircraft Company, Mooney Aviation Company Inc 2150A, 120, 140, 140A and 115 more | Engine Inlet Air Filters | Engine |
| 76-21-06 | 1976-10-26 | Cessna Aircraft Company 172M, 172N, 177B, 177RG | Loss of Engine Oil | Engine |
| 71-18-01 | 1971-08-31 | Cessna Aircraft Company 172, 172A, 172B, 172C and 15 more | Fuel Selector Valve Placard | Engine |
Source: FAA airworthiness directives (final rules and emergency directives) from the FAA's Dynamic Regulatory System, as of October 10, 2026. The FAA's text is the authority; this site adds the links to models, engines and the register. Related: aircraft systems · type certificates.