Lycoming IO-360 series
8,560 aircraft on the U.S. register carry a Lycoming IO-360 series engine, rated at about 180 horsepower. The Mooney M-20 is the model most often fitted with it (2,663 aircraft). The aircraft carrying it were built between 1963 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 IO-360 series (4 codes). FAA spellings: I0360 SER A&C · I0360 SER · I0-360 SER · IO-360 SERIES.
Fitted to model families
Mooney M-202,663Piper PA-28 Cherokee, Warrior, Archer and Arrow2,146Cessna 172 Skyhawk956Diamond Aircraft DA 40 Diamond Star192Beechcraft C24154Piper PA-34 Seneca142Rockwell International 112138Beechcraft A23118Beechcraft B24101Consolidated Aeronautics Inc. LAKE LA-4-200100Aero Commander 11282Lake LA-471
Mooney M-20 · Piper PA-28 Cherokee, Warrior, Archer and Arrow · Cessna 172 Skyhawk · Diamond Aircraft DA 40 Diamond Star · Beechcraft C24 · Piper PA-34 Seneca · Rockwell International 112 · Beechcraft A23 · Beechcraft B24 · Consolidated Aeronautics Inc. LAKE LA-4-200
Where they are owner's state
Texas865California857Florida774Delaware324Ohio247Georgia241North Carolina234Arizona225Washington208Illinois207
Kind of aircraft
Piston singles8,176 (96%)Piston twins284 (3%)Helicopters94 (1%)Gyroplanes2 (0.0%)Airships2 (0.0%)Turboprops1 (0.0%)Gliders1 (0.0%)
When the aircraft were built by decade
What the FAA has certified, ordered and been told about the Lycoming IO-360 series the component layer
No FAA order in the current files names this engine series. Operators and repair shops have filed 39 failure reports with the FAA since 1995, 7 of them in the last ten years.
Failure reports 39 since · what operators and shops told the FAA
Parts most often reported as the reports name them
Door3Actuator2Spinner2Alternator1Bellcrank1Buss Tie1Contactor1Cowling1Cylinder Head1Fuel Control1
Latest reports
2025-04-11Impulse Coupling: failed
2024-06-18Mount: cracked
2023-10-11Powerpack: defective
2023-05-12Cowling: damaged
2022-01-21Actuator: used
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
Fitted to
- Mooney M-20 2,663 with this engine series
- Piper PA-28 Cherokee, Warrior, Archer and Arrow 2,146 with this engine series
- Cessna 172 Skyhawk 956 with this engine series
- Diamond Aircraft DA 40 Diamond Star 192 with this engine series
- Beechcraft C24 154 with this engine series
- Piper PA-34 Seneca 142 with this engine series
- Rockwell International 112 138 with this engine series
- Beechcraft A23 118 with this engine series
Where they are
- Texas 865 of these aircraft
- California 857 of these aircraft
- Florida 774 of these aircraft
- Delaware 324 of these aircraft
- Ohio 247 of these aircraft
Biggest operators
- Christiansen Aviation LLC 45 of these aircraft
- Civil Air Patrol INC 27 of these aircraft
- Wings Over Texas Holdings LLC 24 of these aircraft
- Southern Aircraft Consultancy INC Trustee 20 of these aircraft
- International Air Services INC Trustee 17 of these aircraft
Airworthiness
- Failure reports on the Lycoming IO-360 series 39 reports since 1995
Analytics
These connections as data: /graph/engine/lycoming-io-360-series.json · about the eFlight graph.
Aircraft newest certificates first · 8,560
| Tail no. | Maker and model | Group | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|---|
| N8ZN | Jones Bryan D RV-8 |
Fixed-wing, single engine | Experimental | 2026-02-14 | ValidFAA registration status code V: Valid registration. All codes | |
| N3860T | Piper PA-28R-180 |
Fixed-wing, single engine | Tds Property Holdings LLC Gilmer, Texas |
Standard | 2026-02-13 | ValidFAA registration status code V: Valid registration. All codes |
| N44332 | Piper PA-34-200 |
Fixed-wing, multi-engine | International Air Services INC Trustee Carson City, Nevada |
Standard | 2026-02-13 | ValidFAA registration status code V: Valid registration. All codes |
| N707RJ | Mooney M20J |
Fixed-wing, single engine | Southern Aircraft Consultancy INC Trustee Casper, Wyoming |
Standard | 2026-02-13 | ValidFAA registration status code V: Valid registration. All codes |
| N999HS | Piper PA-28R-180 |
Fixed-wing, single engine | Co-owned owner Florida |
Standard | 2026-02-13 | ValidFAA registration status code V: Valid registration. All codes |
| N511LM | Edwards PITTS SPECIAL S-1C |
Fixed-wing, single engine | Southern Aircraft Consultancy INC Trustee Casper, Wyoming |
Experimental | 2026-02-12 | ValidFAA registration status code V: Valid registration. All codes |
| N5546Q | Mooney M20E |
Fixed-wing, single engine | Co-owned owner Pennsylvania |
Standard | 2026-02-11 | ValidFAA registration status code V: Valid registration. All codes |
| N2201Q | Mooney M20J |
Fixed-wing, single engine | Bocaj Air LLC Irving, Texas |
Standard | 2026-02-10 | ValidFAA registration status code V: Valid registration. All codes |
| N4875D | Mooney M20F |
Fixed-wing, single engine | Nightwing Productions LLC Aptos, California |
Standard | 2026-02-10 | ValidFAA registration status code V: Valid registration. All codes |
| N4202L | Cessna 172R |
Fixed-wing, single engine | Aa-Aero LLC Fairfield, New Jersey |
Standard | 2026-02-09 | ValidFAA registration status code V: Valid registration. All codes |
| N4ML | Mooney M20J |
Fixed-wing, single engine | Southern Aircraft Consultancy INC Trustee Casper, Wyoming |
Standard | 2026-02-09 | ValidFAA registration status code V: Valid registration. All codes |
| N7WD | Aerotek PITTS SPECIAL S-1S |
Fixed-wing, single engine | Southern Aircraft Consultancy INC Trustee Casper, Wyoming |
Standard | 2026-02-09 | ValidFAA registration status code V: Valid registration. All codes |
| N3900T | Piper PA-28R-180 |
Fixed-wing, single engine | Nopat LLC North Charleston, South Carolina |
Standard | 2026-02-07 | ValidFAA registration status code V: Valid registration. All codes |
| N1253N | Thompson Stephen L Iii BEARHAWK |
Fixed-wing, single engine | Bear Minimum Holdings LLC Sheridan, Wyoming |
Experimental | 2026-02-06 | ValidFAA registration status code V: Valid registration. All codes |
| N201FB | Mooney M20J |
Fixed-wing, single engine | Southern Aircraft Consultancy INC Trustee Casper, Wyoming |
Standard | 2026-02-06 | ValidFAA registration status code V: Valid registration. All codes |
| N61YN | Mooney M20J |
Fixed-wing, single engine | Individual owner Florida |
Standard | 2026-02-06 | ValidFAA registration status code V: Valid registration. All codes |
| N38773 | Piper PA-28R-201 |
Fixed-wing, single engine | Individual owner South Dakota |
Standard | 2026-02-05 | ValidFAA registration status code V: Valid registration. All codes |
| N46SH | Alley Randy GLASAIR F T |
Fixed-wing, single engine | Individual owner California |
Experimental | 2026-02-05 | ValidFAA registration status code V: Valid registration. All codes |
| N937BP | Mooney M20J |
Fixed-wing, single engine | Southern Aircraft Consultancy INC Trustee Casper, Wyoming |
Standard | 2026-02-05 | ValidFAA registration status code V: Valid registration. All codes |
| N9705Q | Beech A24R |
Fixed-wing, single engine | Southern Aircraft Consultancy INC Trustee Casper, Wyoming |
Standard | 2026-02-05 | ValidFAA registration status code V: Valid registration. All codes |
| N177SA | Reims CESSNA F177RG |
Fixed-wing, single engine | Southern Aicraft Consultancy INC Trustee Casper, Wyoming |
Standard | 2026-02-04 | ValidFAA registration status code V: Valid registration. All codes |
| N5007S | Piper PA-28R-200 |
Fixed-wing, single engine | Southern Aircraft Consultancy INC Trustee Casper, Wyoming |
Standard | 2026-02-04 | ValidFAA registration status code V: Valid registration. All codes |
| N8HN | Piper PA-28R-200 |
Fixed-wing, single engine | Sol Property Group LLC Rosenberg, Texas |
Standard | 2026-02-03 | ValidFAA registration status code V: Valid registration. All codes |
| N941NZ | Piper PA-28R-201 |
Fixed-wing, single engine | Individual owner Rhode Island |
Standard | 2026-02-02 | ValidFAA registration status code V: Valid registration. All codes |
| N211PD | Mooney M20J |
Fixed-wing, single engine | Individual owner Georgia |
Standard | 2026-01-30 | ValidFAA registration status code V: Valid registration. All codes |
| N822E | Mooney M20E |
Fixed-wing, single engine | Southern Aircraft Consultancy INC Trustee Casper, Wyoming |
Standard | 2026-01-30 | ValidFAA registration status code V: Valid registration. All codes |
| N2943D | Piper PA-28RT-201 |
Fixed-wing, single engine | Southern Aircraft Consultancy INC Trustee Casper, Wyoming |
Standard | 2026-01-29 | ValidFAA registration status code V: Valid registration. All codes |
| N842SP | Cessna 172S |
Fixed-wing, single engine | Southern Aircraft Consultancy INC Trustee Casper, Wyoming |
Standard | 2026-01-29 | ValidFAA registration status code V: Valid registration. All codes |
| N187SA | Piper PA-28R-200 |
Fixed-wing, single engine | Southern Aircraft Consultancy INC Trustee Casper, Wyoming |
Standard | 2026-01-28 | ValidFAA registration status code V: Valid registration. All codes |
| N39CR | Piper PA-39 |
Fixed-wing, multi-engine | Southern Aircraft Consultancy INC Trustee Casper, Wyoming |
Standard | 2026-01-28 | ValidFAA registration status code V: Valid registration. All codes |
| N629CC | Rockwell International 112B |
Fixed-wing, single engine | Aerotechnik INC Trustee Wilmington, Delaware |
Standard | 2026-01-28 | ValidFAA registration status code V: Valid registration. All codes |
| N941BM | Cessna 182S |
Fixed-wing, single engine | Gk Transportation LLC Clarksville, Tennessee |
Standard | 2026-01-28 | ValidFAA registration status code V: Valid registration. All codes |
| N2092T | Piper PA-28R-200 |
Fixed-wing, single engine | Carrolls Auto and Aircraft Sales LLC Muncie, Indiana |
Restricted | 2026-01-25 | ValidFAA registration status code V: Valid registration. All codes |
| N6012Q | Mooney M20E |
Fixed-wing, single engine | Classic Aircraft LLC West Point, Nebraska |
Standard | 2026-01-24 | ValidFAA registration status code V: Valid registration. All codes |
| N777DT | Trusty Dennis RV-6A |
Fixed-wing, single engine | Individual owner Texas |
Experimental | 2026-01-23 | ValidFAA registration status code V: Valid registration. All codes |
| N2197X | Kukura Dave VANS RV 6 |
Fixed-wing, single engine | Individual owner Washington |
Experimental | 2026-01-22 | ValidFAA registration status code V: Valid registration. All codes |
| N4667H | Mooney M20J |
Fixed-wing, single engine | Amazn Leasn INC Lees Summit, Missouri |
Standard | 2026-01-22 | ValidFAA registration status code V: Valid registration. All codes |
| N61BL | Piper PA-28RT-201 |
Fixed-wing, single engine | Individual owner Georgia |
Standard | 2026-01-22 | ValidFAA registration status code V: Valid registration. All codes |
| N768SP | Cessna 172S |
Fixed-wing, single engine | Last Sea LLC Saint Augustine, Florida |
Standard | 2026-01-22 | ValidFAA registration status code V: Valid registration. All codes |
| N808VT | Piper PA-28R-201 |
Fixed-wing, single engine | International Air Services INC Trustee Carson City, Nevada |
Standard | 2026-01-22 | ValidFAA registration status code V: Valid registration. All codes |
| N137CC | Piper PA-28R-201 |
Fixed-wing, single engine | More Right Rudder LLC Sioux City, Iowa |
Standard | 2026-01-18 | ValidFAA registration status code V: Valid registration. All codes |
| N2925R | Piper PA-28R-200 |
Fixed-wing, single engine | Speedbird Aviation Alpha Charlie LLC Glenn Heights, Texas |
Standard | 2026-01-18 | ValidFAA registration status code V: Valid registration. All codes |
| N575JK | American General Acft Corp AG5B |
Fixed-wing, single engine | Individual owner Missouri |
Standard | 2026-01-17 | ValidFAA registration status code V: Valid registration. All codes |
| N4507J | Piper PA-28R-180 |
Fixed-wing, single engine | Individual owner Ohio |
Standard | 2026-01-16 | ValidFAA registration status code V: Valid registration. All codes |
| N5107T | Piper PA-28R-200 |
Fixed-wing, single engine | Iron Horse Leasing LLC Platteville, Wisconsin |
Standard | 2026-01-16 | ValidFAA registration status code V: Valid registration. All codes |
| N205JJ | Mooney M20J |
Fixed-wing, single engine | Individual owner Tennessee |
Standard | 2026-01-13 | ValidFAA registration status code V: Valid registration. All codes |
| N4480T | Piper PA-28R-200 |
Fixed-wing, single engine | Individual owner Indiana |
Standard | 2026-01-13 | ValidFAA registration status code V: Valid registration. All codes |
| N506DS | Diamond Aircraft DA 40 |
Electric airplane | Flight Level 510 LLC El Dorado Hills, California |
Standard | 2026-01-13 | ValidFAA registration status code V: Valid registration. All codes |
| N8116R | Piper PA-28RT-201 |
Fixed-wing, single engine | Jimmy & Ryans Totally Awesome Airplane Ventures Lc Crete, Illinois |
Standard | 2026-01-13 | ValidFAA registration status code V: Valid registration. All codes |
| N7128V | Mooney M20F |
Fixed-wing, single engine | Linville Aero LLC Chapel Hill, North Carolina |
Standard | 2026-01-12 | ValidFAA registration status code V: Valid registration. All codes |
| N18859 | Beech C24R |
Fixed-wing, single engine | Molnair LLC Columbus, Georgia |
Standard | 2026-01-10 | ValidFAA registration status code V: Valid registration. All codes |
| N3288F | Mooney M20F |
Fixed-wing, single engine | Flightbyte LLC Wilmington, Delaware |
Standard | 2026-01-10 | ValidFAA registration status code V: Valid registration. All codes |
| N108MR | Rowe Mark A VANS RV-8 |
Fixed-wing, single engine | Co-owned owner Texas |
Experimental | 2026-01-09 | ValidFAA registration status code V: Valid registration. All codes |
| N4977M | Rockwell International 112B |
Fixed-wing, single engine | Luscher Christopher S Everett, Washington |
Standard | 2026-01-08 | ValidFAA registration status code V: Valid registration. All codes |
| N9515S | Cessna 172R |
Fixed-wing, single engine | Kingsky Flight Academy LLC Lakeland, Florida |
Standard | 2026-01-08 | ValidFAA registration status code V: Valid registration. All codes |
| N1157R | Cessna 172R |
Fixed-wing, single engine | Flying Nam LLC Sheridan, Wyoming |
Standard | 2026-01-06 | ValidFAA registration status code V: Valid registration. All codes |
| N199PG | Piper PA-28RT-201 |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2026-01-06 | ValidFAA registration status code V: Valid registration. All codes |
| N201FX | Mooney M20J |
Fixed-wing, single engine | Mr Dent INC Manheim, Pennsylvania |
Standard | 2026-01-06 | ValidFAA registration status code V: Valid registration. All codes |
| N2136E | Piper PA-28RT-201 |
Fixed-wing, single engine | International Air Services INC Trustee Carson City, Nevada |
Standard | 2026-01-06 | ValidFAA registration status code V: Valid registration. All codes |
| N50RS | Mooney M20J |
Fixed-wing, single engine | Individual owner Delaware |
Standard | 2026-01-06 | ValidFAA registration status code V: Valid registration. All codes |
| N82954 | Piper PA-28RT-201 |
Fixed-wing, single engine | Phoenix Air LLC Hemet, California |
Standard | 2026-01-06 | ValidFAA registration status code V: Valid registration. All codes |
| N9119Y | Mooney M20J |
Fixed-wing, single engine | Individual owner Pennsylvania |
Standard | 2026-01-06 | ValidFAA registration status code V: Valid registration. All codes |
| N5668Q | Mooney M20E |
Fixed-wing, single engine | Individual owner Wisconsin |
Standard | 2026-01-05 | ValidFAA registration status code V: Valid registration. All codes |
| N65MM | Cessna 337B |
Fixed-wing, multi-engine | Individual owner Florida |
Standard | 2026-01-05 | ValidFAA registration status code V: Valid registration. All codes |
| N6697R | Mooney M20E |
Fixed-wing, single engine | J Bar Ranch LLC Downey, Idaho |
Standard | 2026-01-05 | ValidFAA registration status code V: Valid registration. All codes |
| N384DM | Diamond Aircraft DA 40 |
Electric airplane | Volair Aviation LLC Waxhaw, North Carolina |
Standard | 2026-01-04 | ValidFAA registration status code V: Valid registration. All codes |
| N360CR | Rowell Michel Allen LANCAIR 320 |
Fixed-wing, single engine | Free Man Airshows LTD Lyons, Colorado |
Experimental | 2026-01-03 | ValidFAA registration status code V: Valid registration. All codes |
| N122DB | Baker Donal E EAA ACRO SPORT II |
Fixed-wing, single engine | Co-owned owner Mississippi |
Experimental | 2025-12-29 | ValidFAA registration status code V: Valid registration. All codes |
| N201PJ | Mooney M20J |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2025-12-26 | ValidFAA registration status code V: Valid registration. All codes |
| N4940F | Piper PA-28R-200 |
Fixed-wing, single engine | Individual owner Florida |
Standard | 2025-12-26 | ValidFAA registration status code V: Valid registration. All codes |
| N8537M | Beech D95A |
Fixed-wing, multi-engine | Withheld at owner's request | Standard | 2025-12-26 | ValidFAA registration status code V: Valid registration. All codes |
| N16530 | Piper PA-28R-200 |
Fixed-wing, single engine | Beldon Concrete LLC Liberty, Kentucky |
Standard | 2025-12-25 | ValidFAA registration status code V: Valid registration. All codes |
| N5225T | Piper PA-28R-200 |
Fixed-wing, single engine | Individual owner Missouri |
Standard | 2025-12-23 | ValidFAA registration status code V: Valid registration. All codes |
| N41450 | Piper PA-28R-200 |
Fixed-wing, single engine | Fs Wy Holdings LLC Cody, Wyoming |
Multiple | 2025-12-22 | ValidFAA registration status code V: Valid registration. All codes |
| N4945J | Piper PA-28R-180 |
Fixed-wing, single engine | Asher Academy Cameron, Texas |
Standard | 2025-12-22 | ValidFAA registration status code V: Valid registration. All codes |
| N33YZ | Mooney M20J |
Fixed-wing, single engine | Individual owner Florida |
Standard | 2025-12-21 | ValidFAA registration status code V: Valid registration. All codes |
| N2201R | Mooney M20J |
Fixed-wing, single engine | Mize Helicopter LLC Grand Prairie, Texas |
Standard | 2025-12-20 | ValidFAA registration status code V: Valid registration. All codes |
| N2672P | Consolidated Aeronautics Inc. LAKE LA-4-200 |
Fixed-wing, single engine | Individual owner Kentucky |
Standard | 2025-12-20 | ValidFAA registration status code V: Valid registration. All codes |
| N4597T | Piper PA-28R-200 |
Fixed-wing, single engine | Co-owned owner Alabama |
Standard | 2025-12-20 | ValidFAA registration status code V: Valid registration. All codes |
| N5808A | Mooney M20J |
Fixed-wing, single engine | Pas Services LLC Townsend, Delaware |
Standard | 2025-12-20 | ValidFAA registration status code V: Valid registration. All codes |
| N6480Q | Mooney M20F |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2025-12-19 | ValidFAA registration status code V: Valid registration. All codes |
| N6816V | Aerostar Acft Corp Of Texas M20E |
Fixed-wing, single engine | Individual owner Illinois |
Standard | 2025-12-19 | ValidFAA registration status code V: Valid registration. All codes |
| N7056V | Mooney M20F |
Fixed-wing, single engine | Raw Logistics LLC Bethel, North Carolina |
Standard | 2025-12-19 | ValidFAA registration status code V: Valid registration. All codes |
| N391SP | Cessna 172S |
Fixed-wing, single engine | N391Sp LLC A Series of Aero Lease LLC San Antonio, Texas |
Standard | 2025-12-18 | ValidFAA registration status code V: Valid registration. All codes |
| N5020T | Piper PA-28R-200 |
Fixed-wing, single engine | Individual owner Washington |
Standard | 2025-12-18 | ValidFAA registration status code V: Valid registration. All codes |
| N6GL | Lee Robert E GLASAIR SH2 |
Fixed-wing, single engine | Individual owner Florida |
Experimental | 2025-12-18 | ValidFAA registration status code V: Valid registration. All codes |
| N7576J | Piper PA-28R-180 |
Fixed-wing, single engine | Maxxit Motors LLC Columbia, Missouri |
Standard | 2025-12-18 | ValidFAA registration status code V: Valid registration. All codes |
| N246BB | Mooney M20J |
Fixed-wing, single engine | Co-owned owner Missouri |
Standard | 2025-12-17 | ValidFAA registration status code V: Valid registration. All codes |
| N7134U | Mooney M20E |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2025-12-17 | ValidFAA registration status code V: Valid registration. All codes |
| N9220S | Beech B24R |
Fixed-wing, single engine | Individual owner North Carolina |
Standard | 2025-12-17 | ValidFAA registration status code V: Valid registration. All codes |
| N15169 | Piper PA-28R-200 |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2025-12-15 | ValidFAA registration status code V: Valid registration. All codes |
| N1346J | Rockwell International 112A |
Fixed-wing, single engine | Individual owner North Carolina |
Standard | 2025-12-14 | ValidFAA registration status code V: Valid registration. All codes |
| N55460 | Piper PA-28R-200 |
Fixed-wing, single engine | Nish Aviation LLC Concord, North Carolina |
Standard | 2025-12-14 | ValidFAA registration status code V: Valid registration. All codes |
| N1043Q | Piper PA-28R-201 |
Fixed-wing, single engine | Standard | 2025-12-13 | ValidFAA registration status code V: Valid registration. All codes | |
| N3840H | Mooney M20J |
Fixed-wing, single engine | Jzhs LLC Charlottesville, Virginia |
Standard | 2025-12-13 | ValidFAA registration status code V: Valid registration. All codes |
| N5814Y | Mooney M20J |
Fixed-wing, single engine | Individual owner California |
Standard | 2025-12-13 | ValidFAA registration status code V: Valid registration. All codes |
| N7930L | Beech A23-24 |
Fixed-wing, single engine | Individual owner Colorado |
Standard | 2025-12-13 | ValidFAA registration status code V: Valid registration. All codes |
| N119PC | Mooney M20J |
Fixed-wing, single engine | Ac Sales & Investments LLC Hickory, North Carolina |
Standard | 2025-12-12 | ValidFAA registration status code V: Valid registration. All codes |
| N201BY | Mooney M20J |
Fixed-wing, single engine | Individual owner California |
Standard | 2025-12-12 | ValidFAA registration status code V: Valid registration. All codes |
| N5614Q | Mooney M20E |
Fixed-wing, single engine | Altitude Aviation Services LLC Mountain Home, Idaho |
Standard | 2025-12-12 | 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 5, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.