Lycoming O-320 series
27,315 aircraft on the U.S. register carry a Lycoming O-320 series engine, rated at about 180 horsepower. The Cessna 172 Skyhawk is the model most often fitted with it (9,462 aircraft). The aircraft carrying it were built between 1949 and 2026.
The FAA records engines by code, usually at the level of a series ("O-320 series") rather than the exact variant; this page gathers every FAA code that reads as Lycoming O-320 series (2 codes). FAA spellings: 0-320 SERIES · O-320 SERIES.
Fitted to model families
Model families, as a table
Cessna 172 Skyhawk · Piper PA-28 Cherokee, Warrior, Archer and Arrow · Piper PA-18 Super Cub · Piper PA-22 Tri-Pacer and Colt · Grumman American Avn. Corp. AA-5 Traveler, Cheetah and Tiger · Bellanca 7 Citabria · Cessna 177 Cardinal · Piper PA-23 Apache and Aztec · Robinson R22 · Champion 7 Citabria and Champ
Where they are owner's state
Kind of aircraft
By kind, as a table
| aircraft | share | |
|---|---|---|
| Piston singles | 26,597 | 97% |
| Piston twins | 414 | 2% |
| Helicopters | 303 | 1% |
| Gliders | 1 | 0.0% |
What the FAA has certified, ordered and been told about the Lycoming O-320 series the component layer
The design is held under 1 type certificate (E-274, held by Lycoming Engines). The FAA has issued 29 airworthiness directives (orders that owners must comply with) that name this engine series. Operators and repair shops have filed 349 failure reports with the FAA since 1995, 19 of them in the last ten years.
FAA orders 29 airworthiness directives · newest first
Failure reports 349 since · what operators and shops told the FAA
Failure reports by year, as a table
| reports | |
|---|---|
| 95 | 2 |
| 96 | 1 |
| 97 | 2 |
| 98 | 6 |
| 00 | 7 |
| 01 | 39 |
| 02 | 24 |
| 03 | 39 |
| 04 | 30 |
| 05 | 41 |
| 06 | 23 |
| 07 | 32 |
| 08 | 18 |
| 09 | 15 |
| 10 | 13 |
| 11 | 7 |
| 12 | 10 |
| 13 | 4 |
| 14 | 6 |
| 15 | 2 |
| 16 | 9 |
| 17 | 1 |
| 18 | 6 |
| 19 | 1 |
| 20 | 3 |
| 21 | 1 |
| 23 | 2 |
| 25 | 1 |
| 26 | 4 |
Parts most often reported as the reports name them
Parts most reported, as a table
| reports | |
|---|---|
| Spar | 18 |
| Tube | 17 |
| Cylinder | 15 |
| Bulkhead | 9 |
| Alternator | 8 |
| Control Cable | 8 |
| Bolt | 7 |
| Carburetor | 7 |
| Fitting | 6 |
| Float | 6 |
Latest reports
Certificates and bulletins
Safety bulletins 17 · advice, not orders
Sources: the FAA's type certificate data sheets, airworthiness directives, supplemental type certificates, special conditions and special airworthiness information bulletins (Dynamic Regulatory System), and the FAA's service difficulty reports. A failure report is what an operator or repair station chose to file; the counts show reporting as much as reliability, and larger and commercial fleets report more. How the systems are grouped.
Connections how this engine series links to the rest of the register
- Cessna 172 Skyhawk 9,462 with this engine series
- Piper PA-28 Cherokee, Warrior, Archer and Arrow 6,844 with this engine series
- Piper PA-18 Super Cub 2,393 with this engine series
- Piper PA-22 Tri-Pacer and Colt 1,660 with this engine series
- Grumman American Avn. Corp. AA-5 Traveler, Cheetah and Tiger 566 with this engine series
- Bellanca 7 Citabria 563 with this engine series
- Cessna 177 Cardinal 398 with this engine series
- Piper PA-23 Apache and Aztec 347 with this engine series
- Texas 2,351 of these aircraft
- California 2,123 of these aircraft
- Florida 2,077 of these aircraft
- Alaska 1,796 of these aircraft
- Washington 1,004 of these aircraft
- Wings Over Texas Holdings LLC 107 of these aircraft
- American Patrols INC 61 of these aircraft
- Paris Air INC 33 of these aircraft
- Civil Air Patrol INC 33 of these aircraft
- International Air Services INC Trustee 30 of these aircraft
- FAA orders naming the Lycoming O-320 series 29 airworthiness directives
- Failure reports on the Lycoming O-320 series 349 reports since 1995
The whole map of how records connect · these connections as data: /graph/engine/lycoming-o-320-series.json.
Aircraft newest certificates first · 27,315
| Tail no. | Maker and model | Group | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|---|
| N9934Q | Cessna 172M |
Fixed-wing, single engine | Doupe Services LLC Fort Myers, Florida |
Standard | 2019-04-30 | ValidFAA registration status code V: Valid registration. All codes |
| N26888 | Gulfstream American Corp AA-5A |
Fixed-wing, single engine | Individual owner New Hampshire |
Standard | 2019-04-29 | ValidFAA registration status code V: Valid registration. All codes |
| N3108Z | Piper PA-22-160 |
Fixed-wing, single engine | Individual owner Indiana |
Standard | 2019-04-29 | ValidFAA registration status code V: Valid registration. All codes |
| N4518A | Piper PA-22-150 |
Fixed-wing, single engine | Individual owner Utah |
Standard | 2019-04-29 | ValidFAA registration status code V: Valid registration. All codes |
| N4630J | Cessna 172N |
Fixed-wing, single engine | Southrail Aviation LLC North Charleston, South Carolina |
Standard | 2019-04-29 | ValidFAA registration status code V: Valid registration. All codes |
| N5221W | Piper PA-28-160 |
Fixed-wing, single engine | Individual owner Minnesota |
Standard | 2019-04-29 | ValidFAA registration status code V: Valid registration. All codes |
| N8149T | Piper PA-28-161 |
Fixed-wing, single engine | Paris Air INC Vero Beach, Florida |
Standard | 2019-04-29 | ValidFAA registration status code V: Valid registration. All codes |
| N9500L | American AA-5 |
Fixed-wing, single engine | Atlantic Aero Club INC Newark, Delaware |
Standard | 2019-04-29 | ValidFAA registration status code V: Valid registration. All codes |
| N98059 | Piper PA-28-140 |
Fixed-wing, single engine | Airplane LLC Fort Collins, Colorado |
Standard | 2019-04-29 | ValidFAA registration status code V: Valid registration. All codes |
| N3143D | Melby David G CAVALIER |
Fixed-wing, single engine | Individual owner California |
Experimental | 2019-04-26 | ValidFAA registration status code V: Valid registration. All codes |
| N420T | Tolman BUSHBY MUSTANG M-II |
Fixed-wing, single engine | Individual owner California |
Experimental | 2019-04-26 | ValidFAA registration status code V: Valid registration. All codes |
| N53009 | Cessna 172P |
Fixed-wing, single engine | Triple V Aviation LLC Long Valley, New Jersey |
Standard | 2019-04-26 | ValidFAA registration status code V: Valid registration. All codes |
| N6659R | Beech B19 |
Fixed-wing, single engine | Individual owner Georgia |
Standard | 2019-04-26 | ValidFAA registration status code V: Valid registration. All codes |
| N79228 | Cessna 172K |
Fixed-wing, single engine | Lowcountry Flying Club Moncks Corner, South Carolina |
Standard | 2019-04-26 | ValidFAA registration status code V: Valid registration. All codes |
| N8567Y | Piper PA-30 |
Fixed-wing, multi-engine | Co-owned owner Massachusetts |
Standard | 2019-04-26 | ValidFAA registration status code V: Valid registration. All codes |
| N1048A | Piper PA-18-125 |
Fixed-wing, single engine | Co-owned owner Montana |
Restricted | 2019-04-25 | ValidFAA registration status code V: Valid registration. All codes |
| N212AJ | Pearse Arnold J RV-3 |
Fixed-wing, single engine | Individual owner Kansas |
Experimental | 2019-04-25 | ValidFAA registration status code V: Valid registration. All codes |
| N218EA | Cessna 172L |
Fixed-wing, single engine | Co-owned owner North Dakota |
Standard | 2019-04-25 | ValidFAA registration status code V: Valid registration. All codes |
| N3345K | Universal GLOBE GC-1B |
Fixed-wing, single engine | Individual owner Florida |
Standard | 2019-04-25 | ValidFAA registration status code V: Valid registration. All codes |
| N38513 | Piper PA-28-140 |
Fixed-wing, single engine | J&L Aviation LLC Wilmington, Delaware |
Standard | 2019-04-25 | ValidFAA registration status code V: Valid registration. All codes |
| N5054H | Cessna 172M |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2019-04-25 | ValidFAA registration status code V: Valid registration. All codes |
| N5991W | Piper PA-28-140 |
Fixed-wing, single engine | Chickasha Wings INC Chickasha, Oklahoma |
Standard | 2019-04-25 | ValidFAA registration status code V: Valid registration. All codes |
| N73455 | Cessna 172M |
Fixed-wing, single engine | 101 Flight LLC Waterford, Michigan |
Standard | 2019-04-25 | ValidFAA registration status code V: Valid registration. All codes |
| N7677F | Piper PA-28-151 |
Fixed-wing, single engine | Co-owned owner North Dakota |
Standard | 2019-04-25 | ValidFAA registration status code V: Valid registration. All codes |
| N86TU | Piper PA-28-161 |
Fixed-wing, single engine | Co-owned owner Oregon |
Standard | 2019-04-25 | ValidFAA registration status code V: Valid registration. All codes |
| N9881G | Cessna 172L |
Fixed-wing, single engine | Individual owner Mississippi |
Standard | 2019-04-25 | ValidFAA registration status code V: Valid registration. All codes |
| N172BE | Cessna 172L |
Fixed-wing, single engine | Aero Northwest LLC Port Angeles, Washington |
Standard | 2019-04-24 | ValidFAA registration status code V: Valid registration. All codes |
| N31531 | Piper PA-28-161 |
Fixed-wing, single engine | Individual owner Alabama |
Standard | 2019-04-24 | ValidFAA registration status code V: Valid registration. All codes |
| N674FL | Piper PA-28-140 |
Fixed-wing, single engine | Backyard Aero LLC Rockville, Indiana |
Standard | 2019-04-24 | ValidFAA registration status code V: Valid registration. All codes |
| N733TS | Cessna 172N |
Fixed-wing, single engine | Individual owner Florida |
Standard | 2019-04-24 | ValidFAA registration status code V: Valid registration. All codes |
| N755PR | Cessna 172M |
Fixed-wing, single engine | 101 Flight LLC Waterford, Michigan |
Standard | 2019-04-24 | ValidFAA registration status code V: Valid registration. All codes |
| N9878Q | Cessna 172M |
Fixed-wing, single engine | Co-owned owner Washington |
Standard | 2019-04-24 | ValidFAA registration status code V: Valid registration. All codes |
| N1329P | Piper PA-23-150 |
Fixed-wing, multi-engine | N1705R INC Cobb, California |
Standard | 2019-04-23 | ValidFAA registration status code V: Valid registration. All codes |
| N43488 | Piper PA-28-151 |
Fixed-wing, single engine | Ravotti Air LLC Leechburg, Pennsylvania |
Standard | 2019-04-23 | ValidFAA registration status code V: Valid registration. All codes |
| N4657G | Cessna 172N |
Fixed-wing, single engine | Florida Flight Training Center INC Venice, Florida |
Standard | 2019-04-23 | ValidFAA registration status code V: Valid registration. All codes |
| N4976G | Cessna 172N |
Fixed-wing, single engine | Oklahoma Airmen Flying Club INC Jenks, Oklahoma |
Standard | 2019-04-23 | ValidFAA registration status code V: Valid registration. All codes |
| N51890 | Cessna 172P |
Fixed-wing, single engine | Hyldburg Aviation INC Plymouth, Massachusetts |
Standard | 2019-04-23 | ValidFAA registration status code V: Valid registration. All codes |
| N53265 | Cessna 172P |
Fixed-wing, single engine | Jeppesen Employees Flying Association Englewood, Colorado |
Standard | 2019-04-23 | ValidFAA registration status code V: Valid registration. All codes |
| N6392G | Cessna 172N |
Fixed-wing, single engine | Jtw Aero Leasing LLC Frederick, Maryland |
Standard | 2019-04-23 | ValidFAA registration status code V: Valid registration. All codes |
| N64303 | Cessna 172M |
Fixed-wing, single engine | Acey Services LLC Cumming, Georgia |
Standard | 2019-04-23 | ValidFAA registration status code V: Valid registration. All codes |
| N6702J | Piper PA-28-140 |
Fixed-wing, single engine | Individual owner New York |
Standard | 2019-04-23 | ValidFAA registration status code V: Valid registration. All codes |
| N75839 | Cessna 172N |
Fixed-wing, single engine | Rocky Mountain Aircraft Services LLC Broomfield, Colorado |
Standard | 2019-04-23 | ValidFAA registration status code V: Valid registration. All codes |
| N8607D | Piper PA-22-160 |
Fixed-wing, single engine | Individual owner South Dakota |
Standard | 2019-04-23 | ValidFAA registration status code V: Valid registration. All codes |
| N110T | Anderson PITTS SPECIAL S-1 |
Fixed-wing, single engine | Co-owned owner Georgia |
Experimental | 2019-04-22 | ValidFAA registration status code V: Valid registration. All codes |
| N1393P | Piper PA-23 |
Fixed-wing, multi-engine | Individual owner Georgia |
Standard | 2019-04-22 | ValidFAA registration status code V: Valid registration. All codes |
| N26973 | Gulfstream American Corp AA-5A |
Fixed-wing, single engine | Individual owner Mississippi |
Standard | 2019-04-22 | ValidFAA registration status code V: Valid registration. All codes |
| N32585 | Piper PA-28-151 |
Fixed-wing, single engine | Aero Services Lc Woods Cross, Utah |
Standard | 2019-04-22 | ValidFAA registration status code V: Valid registration. All codes |
| N39GM | Martinson Gene E PIETENPOL AIRCAMPER |
Fixed-wing, single engine | Individual owner Missouri |
Experimental | 2019-04-22 | ValidFAA registration status code V: Valid registration. All codes |
| N4114J | Piper PA-28-140 |
Fixed-wing, single engine | Crader Air LLC Jackson, Missouri |
Standard | 2019-04-22 | ValidFAA registration status code V: Valid registration. All codes |
| N4149J | Piper PA-28-140 |
Fixed-wing, single engine | Elko Aviation Group LLC Elko, Nevada |
Standard | 2019-04-22 | ValidFAA registration status code V: Valid registration. All codes |
| N4389Q | Cessna 172L |
Fixed-wing, single engine | Co-owned owner Alaska |
Standard | 2019-04-22 | ValidFAA registration status code V: Valid registration. All codes |
| N73FT | Grumman American Avn. Corp. AA-5A |
Fixed-wing, single engine | Individual owner Florida |
Standard | 2019-04-22 | ValidFAA registration status code V: Valid registration. All codes |
| N79015 | Cessna 172K |
Fixed-wing, single engine | Flying Weaners INC Jacksonville, Florida |
Standard | 2019-04-22 | ValidFAA registration status code V: Valid registration. All codes |
| N2823X | Cessna 177 |
Fixed-wing, single engine | Spectron Aviation INC West Boylston, Massachusetts |
Standard | 2019-04-19 | ValidFAA registration status code V: Valid registration. All codes |
| N3408T | Cessna 177 |
Fixed-wing, single engine | Spectron Aviation INC West Boylston, Massachusetts |
Standard | 2019-04-19 | ValidFAA registration status code V: Valid registration. All codes |
| N974CA | Cessna 172M |
Fixed-wing, single engine | Individual owner Missouri |
Standard | 2019-04-19 | ValidFAA registration status code V: Valid registration. All codes |
| N3761Z | Piper PA-18-150 |
Fixed-wing, single engine | Individual owner Idaho |
Standard | 2019-04-18 | ValidFAA registration status code V: Valid registration. All codes |
| N5197E | Cessna 172N |
Fixed-wing, single engine | Tspy Services INC Wilmington, Delaware |
Standard | 2019-04-18 | ValidFAA registration status code V: Valid registration. All codes |
| N6091D | Cessna 172N |
Fixed-wing, single engine | Mentone Flying Club Rochester, Indiana |
Standard | 2019-04-18 | ValidFAA registration status code V: Valid registration. All codes |
| N902AZ | Cessna 172P |
Fixed-wing, single engine | Individual owner Florida |
Standard | 2019-04-18 | ValidFAA registration status code V: Valid registration. All codes |
| N9672U | Grumman American Avn. Corp. AA-5A |
Fixed-wing, single engine | Individual owner South Carolina |
Standard | 2019-04-18 | ValidFAA registration status code V: Valid registration. All codes |
| N124PH | Cessna 172N |
Fixed-wing, single engine | Dk Skyhawk LLC Park City, Utah |
Standard | 2019-04-17 | ValidFAA registration status code V: Valid registration. All codes |
| N3760P | Piper PA-22-150 |
Fixed-wing, single engine | Altitude Unlimited INC Lewes, Delaware |
Standard | 2019-04-17 | ValidFAA registration status code V: Valid registration. All codes |
| N3960Q | Cessna 172L |
Fixed-wing, single engine | Lastochka LLC Kalispell, Montana |
Standard | 2019-04-17 | ValidFAA registration status code V: Valid registration. All codes |
| N4511Y | Piper PA-18-150 |
Fixed-wing, single engine | Wab Air LLC Boulder, Montana |
Standard | 2019-04-17 | ValidFAA registration status code V: Valid registration. All codes |
| N5047E | Bellanca 7GCBC |
Fixed-wing, single engine | Individual owner South Carolina |
Standard | 2019-04-17 | ValidFAA registration status code V: Valid registration. All codes |
| N53069 | Cessna 172P |
Fixed-wing, single engine | Northwoods Air LLC Orono, Maine |
Standard | 2019-04-17 | ValidFAA registration status code V: Valid registration. All codes |
| N5557J | Socata TB 9 TAMPICO |
Fixed-wing, single engine | Smtm Holdings INC Wilmington, Delaware |
Standard | 2019-04-17 | ValidFAA registration status code V: Valid registration. All codes |
| N7041Q | Cessna 172L |
Fixed-wing, single engine | Elizabeth City State University Elizabeth City, North Carolina |
Standard | 2019-04-17 | ValidFAA registration status code V: Valid registration. All codes |
| N707GA | Grumman American Avn. Corp. GA-7 |
Fixed-wing, multi-engine | Individual owner Nevada |
Standard | 2019-04-17 | ValidFAA registration status code V: Valid registration. All codes |
| N8142 | Sprong Floyd RV-3 |
Fixed-wing, single engine | Individual owner Montana |
Experimental | 2019-04-17 | ValidFAA registration status code V: Valid registration. All codes |
| N53622 | Cessna 172P |
Fixed-wing, single engine | Mc Air LLC Miami Beach, Florida |
Standard | 2019-04-16 | ValidFAA registration status code V: Valid registration. All codes |
| N7157G | Cessna 172K |
Fixed-wing, single engine | Co-owned owner Mississippi |
Standard | 2019-04-16 | ValidFAA registration status code V: Valid registration. All codes |
| N9933W | Piper PA-28-140 |
Fixed-wing, single engine | Co-owned owner Pennsylvania |
Standard | 2019-04-16 | ValidFAA registration status code V: Valid registration. All codes |
| N1098U | Cessna 172M |
Fixed-wing, single engine | Individual owner Illinois |
Standard | 2019-04-15 | ValidFAA registration status code V: Valid registration. All codes |
| N26304 | Grumman American Avn. Corp. AA-5A |
Fixed-wing, single engine | Cobra Kai INC Wichita Falls, Texas |
Standard | 2019-04-15 | ValidFAA registration status code V: Valid registration. All codes |
| N32200 | Piper PA-28-140 |
Fixed-wing, single engine | Individual owner Alabama |
Standard | 2019-04-15 | ValidFAA registration status code V: Valid registration. All codes |
| N3458T | Cessna 177 |
Fixed-wing, single engine | Individual owner California |
Standard | 2019-04-15 | ValidFAA registration status code V: Valid registration. All codes |
| N47906 | Piper PA-28-161 |
Fixed-wing, single engine | Individual owner Minnesota |
Standard | 2019-04-15 | ValidFAA registration status code V: Valid registration. All codes |
| N7637G | Cessna 172L |
Fixed-wing, single engine | Everett Flying Service INC Holly Grove, Arkansas |
Standard | 2019-04-15 | ValidFAA registration status code V: Valid registration. All codes |
| N50CS | Piper PA-23-160 |
Fixed-wing, multi-engine | Individual owner Montana |
Standard | 2019-04-12 | ValidFAA registration status code V: Valid registration. All codes |
| N5741D | Piper PA-22-150 |
Fixed-wing, single engine | J&H Sewing & Vacuum INC Soldotna, Alaska |
Standard | 2019-04-12 | ValidFAA registration status code V: Valid registration. All codes |
| N325WV | Grumman American Avn. Corp. AA-5 |
Fixed-wing, single engine | Individual owner Michigan |
Standard | 2019-04-11 | ValidFAA registration status code V: Valid registration. All codes |
| N4378Q | Cessna 172L |
Fixed-wing, single engine | Wings Flying Club INC South Bend, Indiana |
Standard | 2019-04-11 | ValidFAA registration status code V: Valid registration. All codes |
| N9059D | Gladstone Steve RV6 |
Fixed-wing, single engine | Individual owner Arizona |
Experimental | 2019-04-11 | ValidFAA registration status code V: Valid registration. All codes |
| N171BH | Heinitz Brian COZY |
Fixed-wing, single engine | Co-owned owner Nevada |
Experimental | 2019-04-10 | ValidFAA registration status code V: Valid registration. All codes |
| N522D | Douglas L Olson OLSON SUPER CUB |
Fixed-wing, single engine | Individual owner Iowa |
Experimental | 2019-04-10 | ValidFAA registration status code V: Valid registration. All codes |
| N7568F | Champion 7GCBC |
Fixed-wing, single engine | Individual owner Kansas |
Standard | 2019-04-10 | ValidFAA registration status code V: Valid registration. All codes |
| N7658S | Bellanca 8KCAB |
Fixed-wing, single engine | Flytwincos LLC Las Vegas, Nevada |
Standard | 2019-04-10 | ValidFAA registration status code V: Valid registration. All codes |
| N13200 | Cessna 172M |
Fixed-wing, single engine | Classic Aircraft Sales LLC Weyers Cave, Virginia |
Standard | 2019-04-09 | ValidFAA registration status code V: Valid registration. All codes |
| N3560P | Piper PA-22-150 |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2019-04-09 | ValidFAA registration status code V: Valid registration. All codes |
| N53738 | Bellanca 7GCBC |
Fixed-wing, single engine | G&G Equipment LLC Wasilla, Alaska |
Standard | 2019-04-09 | ValidFAA registration status code V: Valid registration. All codes |
| N61586 | Cessna 172M |
Fixed-wing, single engine | Individual owner Alaska |
Standard | 2019-04-09 | ValidFAA registration status code V: Valid registration. All codes |
| N80282 | Cessna 172M |
Fixed-wing, single engine | Individual owner Maryland |
Standard | 2019-04-09 | ValidFAA registration status code V: Valid registration. All codes |
| N9356D | Piper PA-18-150 |
Fixed-wing, single engine | Individual owner Oregon |
Restricted | 2019-04-09 | ValidFAA registration status code V: Valid registration. All codes |
| N43291 | Piper PA-28-151 |
Fixed-wing, single engine | Co-owned owner Alabama |
Standard | 2019-04-08 | ValidFAA registration status code V: Valid registration. All codes |
| N6574D | Cessna 172N |
Fixed-wing, single engine | Fly Carolina LLC Concord, North Carolina |
Standard | 2019-04-08 | ValidFAA registration status code V: Valid registration. All codes |
| N7156L | Grumman American Avn. Corp. AA-5 |
Fixed-wing, single engine | Excalibur Aviation LLC Amelia Court House, Virginia |
Standard | 2019-04-08 | ValidFAA registration status code V: Valid registration. All codes |
| N9626Q | Cessna 172M |
Fixed-wing, single engine | Individual owner California |
Standard | 2019-04-08 | ValidFAA registration status code V: Valid registration. All codes |
| N2834P | Piper PA-22-150 |
Fixed-wing, single engine | Individual owner California |
Standard | 2019-04-05 | ValidFAA registration status code V: Valid registration. All codes |
Source: FAA Civil Aviation Registry, Releasable Aircraft Database (the engine reference table and each aircraft's engine code), October 9, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.
