Williams International FJ 44 series
552 aircraft on the U.S. register carry a Williams International FJ 44 series engine, rated at about 1,900 pounds of thrust. The Cessna 525 CitationJet (CJ series) is the model most often fitted with it (517 aircraft). The aircraft carrying it were built between 1981 and 2022.
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 Williams International FJ 44 series. FAA spelling: FJ 44 SERIES.
Fitted to model families
Cessna 525 CitationJet (CJ series)517Raytheon Aircraft Company 39021Pilatus PC-247Cessna 501 Citation I/SP6Scaled Composites Llc 2811
Cessna 525 CitationJet (CJ series) · Raytheon Aircraft Company 390 · Pilatus PC-24 · Cessna 501 Citation I/SP · Scaled Composites Llc 281
Where they are owner's state
Texas67Delaware39California39Florida32Tennessee26Ohio21Alabama21Utah19North Carolina18Georgia18
Kind of aircraft
Business jets552 (100%)
When the aircraft were built by decade
What the FAA has certified, ordered and been told about the Williams International FJ 44 series the component layer
No FAA order in the current files names this engine series. Operators and repair shops have filed 168 failure reports with the FAA since 1995, 30 of them in the last ten years.
Failure reports 168 since · what operators and shops told the FAA
Parts most often reported as the reports name them
Blade13Engine9Precooler6Valve6Actuator4Squat Switch4Bulb3Cabin Pressure3Connector3Gyro3
Latest reports
2026-06-19Control Cable: binding
2026-02-03Turbine Blades: damaged
2024-09-12Pressure Valve: failed
2024-09-06Duct: out of position
2024-06-27Warning Message: false activation
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
- Cessna 525 CitationJet (CJ series) 517 with this engine series
- Raytheon Aircraft Company 390 21 with this engine series
- Pilatus PC-24 7 with this engine series
- Cessna 501 Citation I/SP 6 with this engine series
Where they are
- Texas 67 of these aircraft
- Delaware 39 of these aircraft
- California 39 of these aircraft
- Florida 32 of these aircraft
- Tennessee 26 of these aircraft
Biggest operators
- Tvpx Aircraft Solutions INC Trustee 6 of these aircraft
- Huff Air LLC 4 of these aircraft
Airworthiness
- Failure reports on the Williams International FJ 44 series 168 reports since 1995
Analytics
These connections as data: /graph/engine/williams-international-fj-44-series.json · about the eFlight graph.
Aircraft newest certificates first · 552
| Tail no. | Maker and model | Group | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|---|
| N741CC | Cessna 525 |
Fixed-wing, multi-engine | Blake Aviation Enterprises LLC Fort Worth, Texas |
Standard | 2026-10-05 | ValidFAA registration status code V: Valid registration. All codes |
| N323EZ | Cessna 525 |
Fixed-wing, multi-engine | N323Ez LLC Amarillo, Texas |
Standard | 2026-10-02 | ValidFAA registration status code V: Valid registration. All codes |
| N525BR | Cessna 525 |
Fixed-wing, multi-engine | Dk Aviation LLC Pittsford, New York |
Standard | 2026-10-01 | ValidFAA registration status code V: Valid registration. All codes |
| N322SB | Cessna 525C |
Fixed-wing, multi-engine | Huff Air LLC Uvalde, Texas |
Standard | 2026-09-23 | ValidFAA registration status code V: Valid registration. All codes |
| N525DL | Cessna 525A |
Fixed-wing, multi-engine | Tvpx Trust CO LLC Trustee North Salt Lake, Utah |
Standard | 2026-09-22 | ValidFAA registration status code V: Valid registration. All codes |
| N931SR | Cessna 525 |
Fixed-wing, multi-engine | ISR Aviation LLC Wilmington, Delaware |
Standard | 2026-09-14 | ValidFAA registration status code V: Valid registration. All codes |
| N921AP | Cessna 525A |
Fixed-wing, multi-engine | Kjm Aviation LLC Boerne, Texas |
Standard | 2026-09-09 | ValidFAA registration status code V: Valid registration. All codes |
| N57VY | Cessna 525 |
Fixed-wing, multi-engine | Euroaviation INC Trustee Kematen, |
Standard | 2026-09-01 | ValidFAA registration status code V: Valid registration. All codes |
| N35CT | Cessna 525A |
Fixed-wing, multi-engine | Boulder Charters LLC Billings, Montana |
Standard | 2026-08-26 | ValidFAA registration status code V: Valid registration. All codes |
| N242RF | Cessna 525 |
Fixed-wing, multi-engine | Individual owner Alaska |
Standard | 2026-08-23 | ValidFAA registration status code V: Valid registration. All codes |
| N443BC | Cessna 525 |
Fixed-wing, multi-engine | Tothemoon LLC Salt Lake City, Utah |
Standard | 2026-08-21 | ValidFAA registration status code V: Valid registration. All codes |
| N200SL | Cessna 525 |
Fixed-wing, multi-engine | Co-owned owner Missouri |
Standard | 2026-08-05 | ValidFAA registration status code V: Valid registration. All codes |
| N391YS | Raytheon Aircraft Company 390 |
Fixed-wing, multi-engine | Infineon Aviation II LLC Dallas, Texas |
Standard | 2026-07-29 | ValidFAA registration status code V: Valid registration. All codes |
| N17VB | Cessna 525 |
Fixed-wing, multi-engine | N17Vb LLC Nacogdoches, Texas |
Standard | 2026-07-23 | ValidFAA registration status code V: Valid registration. All codes |
| N717HA | Cessna 525A |
Fixed-wing, multi-engine | Cj2 Investments LLC Lafayette, Louisiana |
Standard | 2026-07-22 | ValidFAA registration status code V: Valid registration. All codes |
| N525PL | Cessna 525 |
Fixed-wing, multi-engine | Withheld at owner's request | Standard | 2026-07-21 | ValidFAA registration status code V: Valid registration. All codes |
| N9915Z | Cessna 525 |
Fixed-wing, multi-engine | Wysteria LLC Rock Island, Illinois |
Standard | 2026-07-20 | ValidFAA registration status code V: Valid registration. All codes |
| N144YD | Cessna 525A |
Fixed-wing, multi-engine | Zellair LLC Wilmington, Delaware |
Standard | 2026-07-06 | ValidFAA registration status code V: Valid registration. All codes |
| N122KH | Cessna 525A |
Fixed-wing, multi-engine | Airric LLC Miromar Lakes, Florida |
Standard | 2026-07-04 | ValidFAA registration status code V: Valid registration. All codes |
| N525DE | Cessna 525B |
Fixed-wing, multi-engine | Co-owned owner Texas |
Standard | 2026-06-22 | ValidFAA registration status code V: Valid registration. All codes |
| N131PL | Cessna 525 |
Fixed-wing, multi-engine | Pd Aero LLC Oronogo, Missouri |
Standard | 2026-06-21 | ValidFAA registration status code V: Valid registration. All codes |
| N576SC | Cessna 525A |
Fixed-wing, multi-engine | Fw Cielo LLC Canton, Ohio |
Standard | 2026-06-20 | ValidFAA registration status code V: Valid registration. All codes |
| N10PF | Cessna 525A |
Fixed-wing, multi-engine | Co-owned owner Florida |
Standard | 2026-06-17 | ValidFAA registration status code V: Valid registration. All codes |
| N103CL | Cessna 525A |
Fixed-wing, multi-engine | Blue Lake Enterprises LLC Incline Village, Nevada |
Standard | 2026-05-30 | ValidFAA registration status code V: Valid registration. All codes |
| N339HP | Cessna 501 |
Fixed-wing, multi-engine | Alpine Turbine LLC Rollins, Montana |
Standard | 2026-05-29 | ValidFAA registration status code V: Valid registration. All codes |
| N521PF | Cessna 525 |
Fixed-wing, multi-engine | Co-owned owner Kentucky |
Standard | 2026-05-27 | ValidFAA registration status code V: Valid registration. All codes |
| N67JR | Cessna 525B |
Fixed-wing, multi-engine | Golden Triangle Constructors LTD Port Arthur, Texas |
Standard | 2026-05-26 | ValidFAA registration status code V: Valid registration. All codes |
| N736JS | Cessna 525B |
Fixed-wing, multi-engine | Larson Financial Leasing LLC Saint Louis, Missouri |
Standard | 2026-05-25 | ValidFAA registration status code V: Valid registration. All codes |
| N1220W | Cessna 525A |
Fixed-wing, multi-engine | P2 Flight Operations LLC Fort Worth, Texas |
Standard | 2026-05-20 | ValidFAA registration status code V: Valid registration. All codes |
| N260AM | Cessna 525 |
Fixed-wing, multi-engine | Qualitair LLC Trustee Michelstadt, |
Standard | 2026-05-19 | ValidFAA registration status code V: Valid registration. All codes |
| N326JK | Cessna 525 |
Fixed-wing, multi-engine | River Bank Aviation LLC Dover, Delaware |
Standard | 2026-05-16 | ValidFAA registration status code V: Valid registration. All codes |
| N253CW | Cessna 525 |
Fixed-wing, multi-engine | Standard | 2026-05-13 | ValidFAA registration status code V: Valid registration. All codes | |
| N113BG | Cessna 525A |
Fixed-wing, multi-engine | Wdc Equipment LLC Webster, Texas |
Standard | 2026-04-29 | ValidFAA registration status code V: Valid registration. All codes |
| N101U | Cessna 525 |
Fixed-wing, multi-engine | Sky West Aviation INC Trustee Albuquerque, New Mexico |
Standard | 2026-04-20 | ValidFAA registration status code V: Valid registration. All codes |
| N110PR | Raytheon Aircraft Company 390 |
Fixed-wing, multi-engine | Crown Air LLC Bend, Oregon |
Standard | 2026-04-18 | ValidFAA registration status code V: Valid registration. All codes |
| N405VJ | Pilatus Aircraft Ltd PC-24 |
Fixed-wing, multi-engine | Vj24 Assets LLC Lititz, Pennsylvania |
Standard | 2026-04-11 | ValidFAA registration status code V: Valid registration. All codes |
| N529FD | Cessna 525 |
Fixed-wing, multi-engine | Co-owned owner Oregon |
Standard | 2026-04-11 | ValidFAA registration status code V: Valid registration. All codes |
| N345CJ | Cessna 525A |
Fixed-wing, multi-engine | Brantigan Research LLC Kalispell, Montana |
Standard | 2026-04-08 | ValidFAA registration status code V: Valid registration. All codes |
| N414TE | Raytheon Aircraft Company 390 |
Fixed-wing, multi-engine | Co-owned owner Connecticut |
Standard | 2026-04-08 | ValidFAA registration status code V: Valid registration. All codes |
| N607DB | Cessna 525 |
Fixed-wing, multi-engine | Deductionpros LLC Longview, Texas |
Standard | 2026-04-07 | ValidFAA registration status code V: Valid registration. All codes |
| N109AP | Cessna 525A |
Fixed-wing, multi-engine | Cj2 131 LLC Milwaukee, Wisconsin |
Standard | 2026-03-21 | ValidFAA registration status code V: Valid registration. All codes |
| N184CD | Cessna 525A |
Fixed-wing, multi-engine | Co-owned owner Ohio |
Standard | 2026-03-05 | ValidFAA registration status code V: Valid registration. All codes |
| N871CB | Cessna 525A |
Fixed-wing, multi-engine | Co-owned owner Utah |
Standard | 2026-03-03 | ValidFAA registration status code V: Valid registration. All codes |
| N783JS | Cessna 525B |
Fixed-wing, multi-engine | Professional Pilot Training INC Eagle Lake, Texas |
Standard | 2026-02-26 | ValidFAA registration status code V: Valid registration. All codes |
| N84KE | Pilatus Aircraft Ltd PC-24 |
Fixed-wing, multi-engine | Pinnacle Aviation LLC New York, New York |
Standard | 2026-02-26 | ValidFAA registration status code V: Valid registration. All codes |
| N525MR | Cessna 525A |
Fixed-wing, multi-engine | B200 LLC Zanesville, Ohio |
Standard | 2026-02-19 | ValidFAA registration status code V: Valid registration. All codes |
| N80VR | Raytheon Aircraft Company 390 |
Fixed-wing, multi-engine | Valor Jets INC Osprey, Florida |
Standard | 2026-02-18 | ValidFAA registration status code V: Valid registration. All codes |
| N26A | Cessna 525 |
Fixed-wing, multi-engine | Unlimited Boat Sales INC Page, Arizona |
Standard | 2026-02-16 | ValidFAA registration status code V: Valid registration. All codes |
| N500SD | Cessna 525A |
Fixed-wing, multi-engine | Lord Derby Air LLC Edmond, Oklahoma |
Standard | 2026-02-16 | ValidFAA registration status code V: Valid registration. All codes |
| N920NL | Cessna 525A |
Fixed-wing, multi-engine | Darkstar Aviation LLC Carroll, Iowa |
Standard | 2026-02-14 | ValidFAA registration status code V: Valid registration. All codes |
| N105AD | Cessna 525C |
Fixed-wing, multi-engine | Computer Service Professionals INC DBA Wilmington, Delaware |
Standard | 2026-02-09 | ValidFAA registration status code V: Valid registration. All codes |
| N525WW | Cessna 525 |
Fixed-wing, multi-engine | N525Ww LLC Millsboro, Delaware |
Standard | 2026-02-09 | ValidFAA registration status code V: Valid registration. All codes |
| N143QC | Raytheon Aircraft Company 390 |
Fixed-wing, multi-engine | Keystone Senior Ac LLC North Miami, Florida |
Standard | 2026-02-03 | ValidFAA registration status code V: Valid registration. All codes |
| N741MM | Cessna 525C |
Fixed-wing, multi-engine | Corsair Two LLC Hillsboro, Oregon |
Standard | 2026-02-03 | ValidFAA registration status code V: Valid registration. All codes |
| N201RC | Cessna 525A |
Fixed-wing, multi-engine | Rcc Management & Aviation LLC Magnolia, Texas |
Standard | 2026-01-21 | ValidFAA registration status code V: Valid registration. All codes |
| N100SB | Cessna 525C |
Fixed-wing, multi-engine | Co-owned owner Texas |
Standard | 2026-01-12 | ValidFAA registration status code V: Valid registration. All codes |
| N311SQ | Raytheon Aircraft Company 390 |
Fixed-wing, multi-engine | Jb&B Capital LLC Knoxville, Tennessee |
Standard | 2026-01-12 | ValidFAA registration status code V: Valid registration. All codes |
| N505RM | Cessna 525A |
Fixed-wing, multi-engine | Tempus Crea LLC Tulsa, Oklahoma |
Standard | 2026-01-12 | ValidFAA registration status code V: Valid registration. All codes |
| N126AF | Pilatus Aircraft Ltd PC-24 |
Fixed-wing, multi-engine | Rigi INC Portsmouth, New Hampshire |
Standard | 2025-12-12 | ValidFAA registration status code V: Valid registration. All codes |
| N726TM | Cessna 525 |
Fixed-wing, multi-engine | Aircraft Holding Solutions LLC Trustee Newark, Delaware |
Standard | 2025-12-11 | ValidFAA registration status code V: Valid registration. All codes |
| N822JA | Textron Aviation Inc 525 |
Fixed-wing, multi-engine | Wings of Justice LLC Bozeman, Montana |
Standard | 2025-12-10 | ValidFAA registration status code V: Valid registration. All codes |
| N525CP | Cessna 525 |
Fixed-wing, multi-engine | Adios Aviation LLC Austin, Texas |
Standard | 2025-12-02 | ValidFAA registration status code V: Valid registration. All codes |
| N444CU | Cessna 525C |
Fixed-wing, multi-engine | Btga LLC Brent, Alabama |
Standard | 2025-11-20 | ValidFAA registration status code V: Valid registration. All codes |
| N507HP | Cessna 525 |
Fixed-wing, multi-engine | Cj Capital Partners LLC Mount Pleasant, South Carolina |
Standard | 2025-11-15 | ValidFAA registration status code V: Valid registration. All codes |
| N654WW | Cessna 525 |
Fixed-wing, multi-engine | Lvp Air LLC Chattanooga, Tennessee |
Standard | 2025-11-12 | ValidFAA registration status code V: Valid registration. All codes |
| N33FW | Cessna 525 |
Fixed-wing, multi-engine | Next Level Aviation Group LLC Sarasota, Florida |
Standard | 2025-11-05 | ValidFAA registration status code V: Valid registration. All codes |
| N929JT | Cessna 525 |
Fixed-wing, multi-engine | Individual owner California |
Standard | 2025-11-04 | ValidFAA registration status code V: Valid registration. All codes |
| N918BK | Cessna 525 |
Fixed-wing, multi-engine | SW El LLC Palestine, Texas |
Standard | 2025-11-01 | ValidFAA registration status code V: Valid registration. All codes |
| N701SF | Cessna 525A |
Fixed-wing, multi-engine | T Triple R INC Santa Teresa, New Mexico |
Standard | 2025-10-23 | ValidFAA registration status code V: Valid registration. All codes |
| N140DA | Cessna 525A |
Fixed-wing, multi-engine | Ramsey Hill Aviation LLC River Falls, Wisconsin |
Standard | 2025-10-15 | ValidFAA registration status code V: Valid registration. All codes |
| N374QA | Textron Aviation Inc 525C |
Fixed-wing, multi-engine | Wilmington Trust Company Trustee Wilmington, Delaware |
Standard | 2025-10-10 | ValidFAA registration status code V: Valid registration. All codes |
| N817MP | Cessna 525A |
Fixed-wing, multi-engine | Flybiz LLC Zeeland, Michigan |
Standard | 2025-10-10 | ValidFAA registration status code V: Valid registration. All codes |
| N319JD | Cessna 525 |
Fixed-wing, multi-engine | Hollingsworth Intergalactic LLC Clinton, Tennessee |
Standard | 2025-10-07 | ValidFAA registration status code V: Valid registration. All codes |
| N606HC | Cessna 525 |
Fixed-wing, multi-engine | Sundancer Enterprises LLC Norman, Oklahoma |
Standard | 2025-10-05 | ValidFAA registration status code V: Valid registration. All codes |
| N55HX | Cessna 525C |
Fixed-wing, multi-engine | Terrible Herbst INC Las Vegas, Nevada |
Standard | 2025-10-02 | ValidFAA registration status code V: Valid registration. All codes |
| N321R | Cessna 525 |
Fixed-wing, multi-engine | Individual owner New York |
Standard | 2025-09-26 | ValidFAA registration status code V: Valid registration. All codes |
| N722SG | Cessna 525 |
Fixed-wing, multi-engine | Dt Air LLC Eden, North Carolina |
Standard | 2025-09-26 | ValidFAA registration status code V: Valid registration. All codes |
| N310GT | Cessna 525A |
Fixed-wing, multi-engine | Gt Carriers Aircraft LLC Bakersfield, California |
Standard | 2025-09-24 | ValidFAA registration status code V: Valid registration. All codes |
| N156ML | Cessna 525 |
Fixed-wing, multi-engine | Air Miles LLC River Falls, Wisconsin |
Standard | 2025-09-16 | ValidFAA registration status code V: Valid registration. All codes |
| N600HR | Cessna 525 |
Fixed-wing, multi-engine | Lazy Ta Legend Aircraft LLC Wilmington, Delaware |
Standard | 2025-08-22 | ValidFAA registration status code V: Valid registration. All codes |
| N868CB | Cessna 525A |
Fixed-wing, multi-engine | Co-owned owner Utah |
Standard | 2025-08-20 | ValidFAA registration status code V: Valid registration. All codes |
| N909YR | Cessna 525 |
Fixed-wing, multi-engine | 909 Aero LLC Phoenix, Arizona |
Standard | 2025-08-18 | ValidFAA registration status code V: Valid registration. All codes |
| N469RB | Cessna 525A |
Fixed-wing, multi-engine | Co-owned owner Virginia |
Standard | 2025-08-09 | ValidFAA registration status code V: Valid registration. All codes |
| N525GT | Cessna 525A |
Fixed-wing, multi-engine | Vertivue LLC Allentown, Pennsylvania |
Standard | 2025-08-08 | ValidFAA registration status code V: Valid registration. All codes |
| N545RW | Cessna 525 |
Fixed-wing, multi-engine | Negative Contact LLC Albuquerque, New Mexico |
Standard | 2025-08-06 | ValidFAA registration status code V: Valid registration. All codes |
| N648HE | Cessna 525 |
Fixed-wing, multi-engine | Rocket Air LLC Carson City, Nevada |
Standard | 2025-08-04 | ValidFAA registration status code V: Valid registration. All codes |
| N599JK | Cessna 525B |
Fixed-wing, multi-engine | Kittle Aviation LLC Indianapolis, Indiana |
Standard | 2025-07-21 | ValidFAA registration status code V: Valid registration. All codes |
| N525MB | Cessna 525 |
Fixed-wing, multi-engine | Portobello LLC Fort Payne, Alabama |
Standard | 2025-07-19 | ValidFAA registration status code V: Valid registration. All codes |
| N295DS | Cessna 525 |
Fixed-wing, multi-engine | Co-owned owner Oregon |
Standard | 2025-07-15 | ValidFAA registration status code V: Valid registration. All codes |
| N505BG | Cessna 525A |
Fixed-wing, multi-engine | Co-owned owner Texas |
Standard | 2025-07-15 | ValidFAA registration status code V: Valid registration. All codes |
| N900HA | Cessna 525A |
Fixed-wing, multi-engine | Haqs Aviation LLC Brownsville, Texas |
Standard | 2025-07-10 | ValidFAA registration status code V: Valid registration. All codes |
| N525WF | Cessna 525 |
Fixed-wing, multi-engine | Kentucky Aviation Solutions LLC Frankfort, Kentucky |
Standard | 2025-07-08 | ValidFAA registration status code V: Valid registration. All codes |
| N851JB | Cessna 525A |
Fixed-wing, multi-engine | General Services LLC Sanford, North Carolina |
Standard | 2025-07-02 | ValidFAA registration status code V: Valid registration. All codes |
| N400WD | Cessna 525A |
Fixed-wing, multi-engine | Pacific Coast Aviation INC Brookings, Oregon |
Standard | 2025-06-28 | ValidFAA registration status code V: Valid registration. All codes |
| N88ER | Raytheon Aircraft Company 390 |
Fixed-wing, multi-engine | Co-owned owner Indiana |
Standard | 2025-06-25 | ValidFAA registration status code V: Valid registration. All codes |
| N88QC | Cessna 525C |
Fixed-wing, multi-engine | 2020 Aviation LLC Edmond, Oklahoma |
Standard | 2025-06-11 | ValidFAA registration status code V: Valid registration. All codes |
| N965CK | Cessna 525A |
Fixed-wing, multi-engine | Wms Aviation LLC Eden Prairie, Minnesota |
Standard | 2025-06-10 | ValidFAA registration status code V: Valid registration. All codes |
| N585ML | Cessna 525 |
Fixed-wing, multi-engine | Bh Transportation LLC Jackson, Tennessee |
Standard | 2025-06-04 | ValidFAA registration status code V: Valid registration. All codes |
| N36RG | Cessna 525 |
Fixed-wing, multi-engine | Jrb of Montana LLC Wooster, Ohio |
Standard | 2025-05-21 | ValidFAA registration status code V: Valid registration. All codes |
| N515EV | Cessna 525A |
Fixed-wing, multi-engine | Brig Air 4 LLC Birmingham, Michigan |
Standard | 2025-05-21 | ValidFAA registration status code V: Valid registration. All codes |
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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.