# Leonardo AW139

- Type: Aircraft model (FAA registry)
- Registry code: 33601QG
- Manufacturer (registry): LEONARDO SPA
- Model: AW139
- Aircraft type: Rotorcraft
- Category: Rotorcraft
- Engines: 2 · Turbo-shaft
- Seats: 17
- Weight class: 12,500 to 19,999 lb
- Certification: Type certificated
- Data sheet: [TCDS R00002RD](https://openairdocs.org/tcds/R00002RD) (OpenAirDocs)
- Holder: Leonardo S.p.a.
- Registered aircraft: 13
- Page: https://openairdocs.org/model/leonardo-aw139

Model codes come from the FAA registry's reference file. ADs are matched to them by model name and maker.

## ADs that may apply (OpenAirDocs)

Matched to this model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment.

- [AD 2026-20-07](https://openairdocs.org/ad/2026-20-07): Engine exhaust system · Leonardo AB139 and AW139. Effective Oct 16, 2026
- [AD 2026-17-05](https://openairdocs.org/ad/2026-17-05): Cabin Equipment/Furnishings · Airbus Helicopters H160-B, EC225LP, AS 365 N3 and 18 more. Effective Oct 2, 2026
- [AD 2026-10-03](https://openairdocs.org/ad/2026-10-03): Tail rotor control system · Leonardo AB139, AW139 and AW189. Effective Jun 25, 2026
- [AD 2026-09-05](https://openairdocs.org/ad/2026-09-05): Life Raft · Leonardo AW139 and AB139. Effective Jun 17, 2026
- [AD 2026-04-03](https://openairdocs.org/ad/2026-04-03): Electrical Power System Wiring · Leonardo AB139 and AW139. Effective Apr 2, 2026
- [AD 2026-06-01](https://openairdocs.org/ad/2026-06-01): Placards and Markings · Leonardo AB139 and AW139 with STC SR00049IB. Effective Mar 31, 2026
- [AD 2025-07-01](https://openairdocs.org/ad/2025-07-01): Air Data Computer · Synthetic Vision Electronic Flight Information System (Arrow STC SR09595RC or ST01523WI). Effective May 15, 2025
- [AD 2025-03-03](https://openairdocs.org/ad/2025-03-03): Cabin Equipment/Furnishings · Leonardo A109E, A109K2, A109S and 4 more. Effective Feb 19, 2025
- [AD 2024-26-08](https://openairdocs.org/ad/2024-26-08): Main Landing Gear · Leonardo AW139 and AB139. Effective Jan 17, 2025
- [AD 2024-17-07](https://openairdocs.org/ad/2024-17-07): Tail Rotor System · Leonardo AB139 and AW139. Effective Nov 12, 2024
- [AD 2023-11-07](https://openairdocs.org/ad/2023-11-07): Ground Proximity System · Airbus Helicopters 47, 206, 210 and 237 more. Effective Jun 22, 2023
- [AD 2023-10-05](https://openairdocs.org/ad/2023-10-05): Main Rotor System · Leonardo AB139 and AW139. Effective Jun 7, 2023
- [AD 2023-03-03](https://openairdocs.org/ad/2023-03-03): Tail Rotor System · Leonardo AB139 and AW139. Effective Mar 23, 2023
- [AD 2022-27-03](https://openairdocs.org/ad/2022-27-03): Main Rotor Gearbox · Leonardo AB139 and AW139. Effective Jan 31, 2023
- [AD 2022-22-03](https://openairdocs.org/ad/2022-22-03): Electrical Power System Wiring · Leonardo AB139 and AW139. Effective Nov 17, 2022
- [AD 2022-11-20](https://openairdocs.org/ad/2022-11-20): Fuselage Structure · Leonardo AB139 and AW139. Effective Jul 27, 2022
- [AD 2022-07-01](https://openairdocs.org/ad/2022-07-01): Emergency Equipment, Life Raft · Leonardo AB139 and AW139. Effective May 9, 2022
- [AD 2022-05-10](https://openairdocs.org/ad/2022-05-10): Cabin Equipment/Furnishings · Airbus Helicopters AS332L, AS332L1, AS332L2 and 57 more. Effective Apr 20, 2022
- [AD 2022-02-12](https://openairdocs.org/ad/2022-02-12): Aircraft Structures, Main Rotor Drive Systems · Leonardo AB139 and AW139. Effective Mar 17, 2022
- [AD 2022-01-03](https://openairdocs.org/ad/2022-01-03): Fire Bottle, Portable · Airbus Helicopters AS332C, AS332C1, AS332L and 35 more. Effective Mar 7, 2022
- [AD 2021-23-22](https://openairdocs.org/ad/2021-23-22): Main Rotor System · Leonardo AB139 and AW139. Effective Jan 18, 2022
- [AD 2021-22-02](https://openairdocs.org/ad/2021-22-02): Electrical Power System · Leonardo AB139 and AW139. Effective Jan 3, 2022
- [AD 2021-21-08](https://openairdocs.org/ad/2021-21-08): Ice/Rain Protection System Wiring, Tail Rotor Blades · Leonardo AB139 and AW139. Effective Dec 10, 2021
- [AD 2021-20-12](https://openairdocs.org/ad/2021-20-12): Emergency Flotation Section · Leonardo AB139, AB412, AB412 EP and 1 more. Effective Nov 22, 2021
- [AD 2021-20-10](https://openairdocs.org/ad/2021-20-10): Main Rotor Gearbox · Leonardo AB139 and AW139. Effective Nov 22, 2021
- [AD 2021-22-07](https://openairdocs.org/ad/2021-22-07): Fire Bottle, Portable · Airbus A319-111, A319-112, A319-113 and 127 more. Effective Nov 18, 2021
- [AD 2021-22-13](https://openairdocs.org/ad/2021-22-13): Cargo Compartments · Leonardo AB139 and AW139. Effective Nov 17, 2021
- [AD 2021-19-03](https://openairdocs.org/ad/2021-19-03): Auto Flight System · Leonardo AB139 and AW139. Effective Nov 1, 2021
- [AD 2021-18-11](https://openairdocs.org/ad/2021-18-11): Tail Rotor System · Leonardo AB139 and AW139. Effective Nov 1, 2021
- [AD 2021-17-15](https://openairdocs.org/ad/2021-17-15): Main Rotor Blades · Leonardo AB139 and AW139. Effective Oct 13, 2021
- [AD 2021-15-09](https://openairdocs.org/ad/2021-15-09): Emergency Flotation Section · Leonardo AB139 and AW139. Effective Aug 27, 2021
- [AD 2021-14-18](https://openairdocs.org/ad/2021-14-18): Tail Rotor Blades · Leonardo AB139 and AW139. Effective Aug 24, 2021
- [AD 2021-13-01](https://openairdocs.org/ad/2021-13-01): Main Rotor System · Leonardo AB139, AW139 and AW189. Effective Aug 3, 2021
- [AD 2021-13-21](https://openairdocs.org/ad/2021-13-21): Main Rotor Mast/Swashplate · Leonardo AB139, AW139 and AW189. Effective Jul 12, 2021
- [AD 2021-12-10](https://openairdocs.org/ad/2021-12-10): Placards and Markings · Leonardo AB139 and AW139. Effective Jun 22, 2021
- [AD 2021-05-21](https://openairdocs.org/ad/2021-05-21): Main Rotor System · Leonardo AB139 and AW139. Effective May 7, 2021
- [AD 2021-03-07](https://openairdocs.org/ad/2021-03-07): Engine Mount Section · Leonardo AB139 and AW139. Effective Apr 1, 2021
- [AD 2021-04-01](https://openairdocs.org/ad/2021-04-01): Cabin Equipment/Furnishings · Leonardo AB139 and AW139. Effective Mar 26, 2021
- [AD 2020-19-04](https://openairdocs.org/ad/2020-19-04): Rotor Drive-Gearbox · Leonardo AB139 and AW139. Effective Oct 15, 2020
- [AD 2020-15-18](https://openairdocs.org/ad/2020-15-18): Emergency Flotation Section · Leonardo AB139, AW139, AW169 and 1 more. Effective Sep 3, 2020
- [AD 2019-12-15](https://openairdocs.org/ad/2019-12-15): Landing Gear System · Leonardo AB139 and AW139. Effective Aug 2, 2019
- [AD 2019-12-06](https://openairdocs.org/ad/2019-12-06): Tail Rotor Driveshaft · Leonardo AW139. Effective Jul 30, 2019
- [AD 2019-05-03](https://openairdocs.org/ad/2019-05-03): Tail Rotor System · Leonardo AB139, AW139, AW169 and 1 more. Effective Mar 28, 2019
- [AD 2018-04-11](https://openairdocs.org/ad/2018-04-11): Tail Rotor Control System · Agusta AB139 and AW139. Effective Apr 5, 2018
- [AD 2018-03-01](https://openairdocs.org/ad/2018-03-01): Main Rotor Blades · Agusta AB139 and AW139. Effective Feb 14, 2018
- [AD 2016-26-01](https://openairdocs.org/ad/2016-26-01): Hydraulic Power · Agusta AB139 and AW139. Effective Jan 31, 2017
- [AD 2016-01-15](https://openairdocs.org/ad/2016-01-15): Fuselage Structure (General) · Agusta AB139 and AW139. Effective Feb 25, 2016
- [AD 2016-01-06](https://openairdocs.org/ad/2016-01-06): Propeller/Rotor Anti-ice/De-Ice System · Agusta AB139 and AW139. Effective Jan 28, 2016
- [AD 2015-02-21](https://openairdocs.org/ad/2015-02-21): Hydraulic System, Main · Agusta AB139 and AW139. Effective Mar 17, 2015
- [AD 2008-14-02 R1](https://openairdocs.org/ad/2008-14-02-R1): Fuselage, Main Frame · Agusta AB139 and AW139. Effective Jan 16, 2015

Historical (superseded or no longer in force):

- [AD 2023-07-51](https://openairdocs.org/ad/2023-07-51) (historical): Main Rotor System · Leonardo AB139 and AW139
- [AD 2021-23-13](https://openairdocs.org/ad/2021-23-13) (historical): Ground Proximity System · Airbus Helicopters K-225, K-190A, K-240 and 237 more. Effective Dec 9, 2021
- [AD 2020-23-07](https://openairdocs.org/ad/2020-23-07) (historical): Emergency Equipment, Life Raft · Leonardo AB139 and AW139. Effective Dec 4, 2020
- [AD 2017-23-08](https://openairdocs.org/ad/2017-23-08) (historical): M/R System · Agusta AB139 and AW139. Effective Dec 11, 2017
- [AD 2014-24-02](https://openairdocs.org/ad/2014-24-02) (historical): M/R System · Agusta AB139 and AW139. Effective Dec 15, 2014
- [AD 2014-07-51](https://openairdocs.org/ad/2014-07-51) (historical): M/R System · Agusta AB139 and AW139. Effective Aug 20, 2014
- [AD 2012-26-15](https://openairdocs.org/ad/2012-26-15) (historical): Navigation · Agusta AW139, A318-111, A318-112 and 71 more. Effective Jan 24, 2013
- [AD 2011-18-52](https://openairdocs.org/ad/2011-18-52) (historical): Tail Rotor Blade · Agusta AB139 and AW139. Effective May 3, 2012
- [AD 2009-19-51](https://openairdocs.org/ad/2009-19-51) (historical): Tailboom · Agusta AB139 and AW139. Effective Feb 8, 2010
- [AD 2008-14-02](https://openairdocs.org/ad/2008-14-02) (historical): Fuselage frame · Agusta AB139 and AW139. Effective Aug 14, 2008

All 75: https://openairdocs.org/model/leonardo-aw139/ads.md

## Information bulletins (advisory) (1)

- [SAIB NM-10-12](https://openairdocs.org/saib/NM-10-12): Navigation: Flight Management System. Issued Jan 7, 2010

## Registered aircraft (13)

- [N139EX](https://openairdocs.org/aircraft/N139EX): [Bank Of Utah Trustee](https://openairdocs.org/faa-owner/BANK%20OF%20UTAH%20TRUSTEE), [Salt Lake City, UT](https://openairdocs.org/faa-place/UT/Salt%20Lake%20City), built 2019, S/N 31851
- [N551HY](https://openairdocs.org/aircraft/N551HY): [Mr Aviation LLC](https://openairdocs.org/faa-owner/MR%20AVIATION%20LLC), [Kearny, NJ](https://openairdocs.org/faa-place/NJ/Kearny), built 2017, S/N 31771
- [N614CJ](https://openairdocs.org/aircraft/N614CJ): [Suffolk Av LLC](https://openairdocs.org/faa-owner/SUFFOLK%20AV%20LLC), [Boston, MA](https://openairdocs.org/faa-place/MA/Boston), built 2024, S/N 32041
- [N629RT](https://openairdocs.org/aircraft/N629RT): [Integrity Aircraft Title Holdings LLC](https://openairdocs.org/faa-owner/INTEGRITY%20AIRCRAFT%20TITLE%20HOLDINGS%20LLC), [Portland, OR](https://openairdocs.org/faa-place/OR/Portland), S/N 31269
- [N858AH](https://openairdocs.org/aircraft/N858AH): [Bank Of Utah Trustee](https://openairdocs.org/faa-owner/BANK%20OF%20UTAH%20TRUSTEE), [Salt Lake City, UT](https://openairdocs.org/faa-place/UT/Salt%20Lake%20City), built 2019, S/N 31850
- [N860AH](https://openairdocs.org/aircraft/N860AH): [Bank Of Utah Trustee](https://openairdocs.org/faa-owner/BANK%20OF%20UTAH%20TRUSTEE), [Salt Lake City, UT](https://openairdocs.org/faa-place/UT/Salt%20Lake%20City), built 2019, S/N 31856
- [N861AH](https://openairdocs.org/aircraft/N861AH): [Bank Of Utah Trustee](https://openairdocs.org/faa-owner/BANK%20OF%20UTAH%20TRUSTEE), [Salt Lake City, UT](https://openairdocs.org/faa-place/UT/Salt%20Lake%20City), built 2019, S/N 31867
- [N862AH](https://openairdocs.org/aircraft/N862AH): [Bank Of Utah Trustee](https://openairdocs.org/faa-owner/BANK%20OF%20UTAH%20TRUSTEE), [Salt Lake City, UT](https://openairdocs.org/faa-place/UT/Salt%20Lake%20City), built 2019, S/N 31876
- [N863AH](https://openairdocs.org/aircraft/N863AH): [Bank Of Utah Trustee](https://openairdocs.org/faa-owner/BANK%20OF%20UTAH%20TRUSTEE), [Salt Lake City, UT](https://openairdocs.org/faa-place/UT/Salt%20Lake%20City), built 2020, S/N 31891
- [N864AH](https://openairdocs.org/aircraft/N864AH): [Bank Of Utah Trustee](https://openairdocs.org/faa-owner/BANK%20OF%20UTAH%20TRUSTEE), [Salt Lake City, UT](https://openairdocs.org/faa-place/UT/Salt%20Lake%20City), built 2020, S/N 31892
- [N977RT](https://openairdocs.org/aircraft/N977RT): [Integrity Aircraft Title Holdings LLC](https://openairdocs.org/faa-owner/INTEGRITY%20AIRCRAFT%20TITLE%20HOLDINGS%20LLC), [Portland, OR](https://openairdocs.org/faa-place/OR/Portland), S/N 31977
- [N978RT](https://openairdocs.org/aircraft/N978RT): [Integrity Aircraft Title Holdings LLC](https://openairdocs.org/faa-owner/INTEGRITY%20AIRCRAFT%20TITLE%20HOLDINGS%20LLC), [Portland, OR](https://openairdocs.org/faa-place/OR/Portland), S/N 31978
- [N99DQ](https://openairdocs.org/aircraft/N99DQ): [Duquesne Aviation Inc](https://openairdocs.org/faa-owner/DUQUESNE%20AVIATION%20INC), [New York, NY](https://openairdocs.org/faa-place/NY/New%20York), built 2024, S/N 32087

## NTSB investigations

None matched to aircraft with this model.

## FAA accident and incident reports

None matched to aircraft with this model.

## Service difficulty reports (321, newest 50)

As reported by operators and repair stations, by the model named in the report.

- [SDR 2026FA0000825](https://openairdocs.org/sdr/2026FA0000825), Oct 7, 2026: HYDRAULIC LINE. RUPTURED. DURING CRUISE AFTER DEPARTING, BTWN 5-10 MINUTES AFTER TAKE-OFF, AROUND 2000FT AND APPROX 140KTS, CREW NOTICED A CAS MSG HYD1 MIN, FOLLOWED BY 1 HYD PUMP, 1 HYD
- [SDR 2026FA0000526](https://openairdocs.org/sdr/2026FA0000526), Jun 17, 2026: WINDSHIELD. CRACKED. CREW REPORTED THAT UPON LANDING A “POP” SOUND WAS HEARD. SUBSEQUENT MULTIPLE CRACKS OBSERVED ON THE LT HEATED GLASS WINDSHIELD COMMENCING FROM AROUND THE BOTTOM
- [SDR 2026FA0000480](https://openairdocs.org/sdr/2026FA0000480), Jun 1, 2026: WINDSHIELD. CRACKED. DURING CRUISE FLIGHT OF 150 KIAS, SIC NOTICED WHAT LOOKED LIKE TO BE CRACKS IN SEALANT LOCATED ON THE PIC WINDSCREEN LOCATED AT THE TOP RIGHT CORNER ABOUT A 1/3
- [SDR 2026FA0000299](https://openairdocs.org/sdr/2026FA0000299), Apr 27, 2026: TAIL BOOM. CORRODED. DURING THE PERFORMANCE OF THE GENERAL VISUAL INSPECTION AS SPECIFIED IN THE CONDITIONS OF PSE/TQ/2025/215289 REPAIR DEFERRAL LETTER, EVIDENCE OF PROPAGATION AND
- [SDR 2026FA0000287](https://openairdocs.org/sdr/2026FA0000287), Apr 23, 2026: WINDSHIELD. CRACKED. ON 22 APRIL 2026 AT 1:56PM, THE CREW REPORTED WHEN TRANSITIONING INTO HOVER A "POP" SOUND WAS HEARD. SUBSEQUENTLY MULTIPLE VERTICAL CRACKS WERE OBSERVED ON THE 
- [SDR PN1R202603200003](https://openairdocs.org/sdr/PN1R202603200003), Mar 20, 2026: TORQUE LINK. CORRODED. DURING INSPECTION, FOUND WHITE AND BLUE M/R TENSION LINK BUSHINGS FRETTED OUT OF PERMISSIBLE LIMITS. LIMIT: 39.040MM - WHITE: 39.050, BLUE: 39.050. S/N'S MC-10-
- [SDR PN1R202603200002](https://openairdocs.org/sdr/PN1R202603200002), Mar 20, 2026: TORQUE LINK. CRACKED. DURING INSPECTION, FOUND RED MAIN ROTOR TENSION LINK CRACKED. S/N MCL1771
- [SDR PN1R202603200001](https://openairdocs.org/sdr/PN1R202603200001), Mar 19, 2026: TORQUE LINK. CRACKED. DURING INSPECTION FOUND RED, WHITE, YELLOW, AND BLACK MAIN ROTOR TENSION LINKS CRACKED. YELLOW S/N MCL1501, BLACK S/N MCL1535, WHITE S/N MCL1595, & RED S/N MCL1
- [SDR PN1R202603190001](https://openairdocs.org/sdr/PN1R202603190001), Mar 19, 2026: LINK. CRACKED. DURING INSPECTION FOUND WHITE, YELLOW, AND BLACK MAIN ROTOR TENSION LINKS CRACKED.
- [SDR 2026FA0000238](https://openairdocs.org/sdr/2026FA0000238), Mar 16, 2026: FUEL TANK. LEAKING. ON 16TH MARCH 2026, AFTER 9Y-TKD RETURNED TO THE HANGAR, A HEAVY DOWNPOUR OF JET FUEL EMANATING UNDERNEATH THE AIRCRAFT WAS OBSERVED. A DAILY INSPECTION WAS CON
- [SDR PN1R202602180001](https://openairdocs.org/sdr/PN1R202602180001), Feb 18, 2026: SEAL. LEAKING. DURING INSPECTION, FOUND #1 ENGINE NO. 5 BEARING SEAL LEAKING.
- [SDR 2026FA0000096](https://openairdocs.org/sdr/2026FA0000096), Feb 10, 2026: CLAMP. BROKEN. DURING THE DE-PANELING PROCESS ON AIRCRAFT 31035 WE FOUND THE LH EXHAUST STRAP (BAS238-6-1300 CLAMP ASSY (NSCM KB568)) HAD BROKEN LOOSE AND COME TO REST ON THE 
- [SDR 2026FA0000122](https://openairdocs.org/sdr/2026FA0000122), Feb 9, 2026: LANDING GEAR. DEFECTIVE. MULTIPLE NR 2 WOW FAIL CAS MESSAGES. NOT FULLY EXTENDING. RIGHT MAIN LANDING GEAR SERVICED. EXTENSION AND RETRACTION OPERATIONAL CHECK CARRIED OUT SATISFACTORY.
- [SDR AC2A2025122013901](https://openairdocs.org/sdr/AC2A2025122013901), Dec 19, 2025: COOLING FAN. SHEARED. DURING TAXI IN FROM RUNWAY, MGB TEMP WARNING ILLUMINATED.
- [SDR U0GA VP000639](https://openairdocs.org/sdr/U0GA%20VP000639), Dec 19, 2025: TAIL BOOM. CORRODED. THIS AIRCRAFT HAS BEEN GROUNDED AT OUR REPAIR STATION ON VP-000639-2024 SINCE THE DATE OF DISCOVERY. THE REPAIR IS AS FOLLOWS; REPLACE LT SIDE PANEL, P/N 3G5350
- [SDR U0GA2025121900639](https://openairdocs.org/sdr/U0GA2025121900639), Dec 19, 2025: FRAME. DAMAGED. THIS AIRCRAFT HAS BEEN GROUNDED. THE REPAIR FROM AS FOLLOWS; REMOVE AND REPLACED THE LEFT AND RIGHT BS 5700 FRAME 3P5338A13355 AND 3P5338A13455. IAW PSE/TQ/2024
- [SDR 2026FA0000022](https://openairdocs.org/sdr/2026FA0000022), Nov 19, 2025: STABILIZER. CRACKED. REFENCES ARE MADE TO SDR UNIQUE CONTROL #2026FA0000017, #2026FA0000018 AND #2026FA0000020 RAISED PREVIOUSLY. #2026FA0000017 - ERRORS WERE MADE WHEN ENTERING THE
- [SDR 2026FA0000017](https://openairdocs.org/sdr/2026FA0000017), Nov 19, 2025: STABILIZER. CRACKED. DURING A VISUAL INSPECTION OF 9Y-TKB AFTER FLIGHT THE LINE SUPERVISORS DISCOVERED THE CRACK ON THE TAILPLANE ASSEMBLY LEFT LEADING EDGE LOWER PANEL. LOCATION OF
- [SDR 2025FA0000520](https://openairdocs.org/sdr/2025FA0000520), Jul 25, 2025: BOLT. LOOSE. DURING INSPECTION FOUND 2 OF 4 MOUNT BOLTS ON #2 PCM LOOSE. UPON REMOVAL OF PCM FOUND CRACK IN FWD DECK AT FWD INBOARD MOUNT INSERT. REQUIRES REPAIR IAW AW139 A
- [SDR 2025FA0000363](https://openairdocs.org/sdr/2025FA0000363), May 20, 2025: FUEL FILTER. CLOGGED. PILOT REPORTS FUEL FILTER CAS MESSAGE. UPON TROUBLESHOOTING AND INSPECTION FOUND EXCESSIVE DEBRIS AND DETERIORATION TO THE LH, RH, AND AUX FUEL TANKS.
- [SDR AC2A202503271391](https://openairdocs.org/sdr/AC2A202503271391), Mar 27, 2025: HOSE. LEAKING. DURING FLIGHT HYD UTIL PRESS CAS LIGHT ILLUMINATED, #2 HYD RES LEVEL INDICATED 50% LEVEL. USED EMER GEAR DOWN WITCH. UPON INSPECTION, WE DISCOVERED THAT THE THE
- [SDR 2025FA0000121](https://openairdocs.org/sdr/2025FA0000121), Feb 20, 2025: ELEC CONNECTOR. LOOSE. DURING INSPECTION, FOUND ALL RELAY CONNECTORS LOOSE UNDER PDP #2 WITH CONNECTOR SCREWS FULLY TIGHTENED.
- [SDR HEEA202501200001](https://openairdocs.org/sdr/HEEA202501200001), Jan 17, 2025: GEARBOX. MAKING METAL. ON CLIMB OUT, GOT A MAIN GEARBOX CHIP CAS MSG. BURNED IT THREE TIMES AND CAME ON A FOURTH TIME.
- [SDR KY1R20241101001](https://openairdocs.org/sdr/KY1R20241101001), Nov 1, 2024: COOLING FAN. SEPARATED. DURING A COMPANY-MANDATED DAILY INSPECTION OF THE AIRCRAFT, A TECHNICIAN FOUND THE OUTLET SCREEN FOR THE MAIN GEARBOX (MGB) OIL COOLER FAN WAS BROKEN WITH THE W
- [SDR HEEA202407110001](https://openairdocs.org/sdr/HEEA202407110001), Jul 10, 2024: ACTUATOR. INOPERATIVE. BEFORE LANDING CHECKS, THE NOSE GEAR SHOWED LOCKED DOWN BUT 2X MAIN GEAR WERE SHOWING AMBER CAUTION LIGHTS. AIRSPEED WAS REDUCED AND THE CIRCUIT BREAKER AND HYD
- [SDR HEEA202407020001](https://openairdocs.org/sdr/HEEA202407020001), Jun 28, 2024: CONNECTOR. CONTAMINATED. AFTER TAKE-OFF DURING CLIMB OUT MAIN GEAR BOX CHIP SUMP KEEP CAME ON AND OFF NONSTOP. RTB. FOUND OIL & WATER IN SUMP CHIP PLUG CONNECTOR. CLEANED CONNECTOR.
- [SDR HEEA496701162024](https://openairdocs.org/sdr/HEEA496701162024), Jan 16, 2024: UNKNOWN. CORRODED. AFT UPPER DECK DECK CORRODED BEYOND LIMITS.
- [SDR 2023FA0000811](https://openairdocs.org/sdr/2023FA0000811), Dec 5, 2023: BUSHING. SCORED. DURING INSPECTION FOUND WHITE TENSION LINK FLANGE BUSHING BORE SCORED.
- [SDR 2023FA0000810](https://openairdocs.org/sdr/2023FA0000810), Dec 5, 2023: BUSHING. WORN. DURING INSPECTION, FOUND TAIL ROTOR SLIDER BUSHING WORN BEYOND ALLOWABLE LIMITS. INSTALLED NEW BUSHING P/N 3G6430L00251, REF. AW139 AMP SECT. 64-31.
- [SDR 2023F00285](https://openairdocs.org/sdr/2023F00285), Sep 19, 2023: UNKNOWN. UNKNOWN. BIRD STRIKE RTB.
- [SDR 2023F00221](https://openairdocs.org/sdr/2023F00221), Jul 7, 2023: PEDAL. UNSTAKED. WHILE DOING A TR TRACK AND BALANCE FLIGHT DURING LANDING WE NOTICED THE PEDALS WERE STUCK. WE WENT AROUND TO ASSESS THE PROBLEM.
- [SDR 2023FA0000359](https://openairdocs.org/sdr/2023FA0000359), Jul 7, 2023: ACTUATOR. STUCK. WHILE DOING A TR TRACK AND BALANCE FLIGHT DURING LANDING WE NOTICED THE PEDALS WERE STUCK WE WENT AROUND TO ASSESS THE PROBLEM.
- [SDR AC2A2023062213901](https://openairdocs.org/sdr/AC2A2023062213901), Jun 18, 2023: ACTUATOR. UNSERVICEABLE. ROTOR BRAKE FAIL CAS ILLUMINATED ON SHUT DOWN WITH CALIPER INDICATING DOWN POSITION. REPLACED ROTOR BRAKE ACTUATOR.
- [SDR KY1R20230607001](https://openairdocs.org/sdr/KY1R20230607001), Jun 1, 2023: STUD. FRACTURED. DURING AIRCRAFT RUN, AND RELEASE OF PARKING BRAKE, PILOT'S RIGHT YAW PEDAL STUD BROKE WHICH AFFIXES THE BRAKE CYLINDER TO THE PEDAL ASSEMBLY, WHICH LED TO THE I
- [SDR 2023F00139](https://openairdocs.org/sdr/2023F00139), May 2, 2023: ENGINE. INOPERATIVE. DURING TAKEOFF, BUT PRIOR TO DP, PIC NOTED LARGE TORQUE SPLIT AND#2 ENGINE OPERATING OUT OF LIMITS. ABORTED TAKEOFF.
- [SDR U0GA202304240001](https://openairdocs.org/sdr/U0GA202304240001), Apr 23, 2023: ATTACH BRACKET. BENT. APPROACHING KC875 (LUCIUS) ON OUR SECOND FLIGHT LEG (FROM GC608), LOWERING THE LANDING GEAR RESULTED IN THE LEFT MAIN GEAR INDICATOR REMAINING AMBER. REFERRING 
- [SDR KY1R20230424715](https://openairdocs.org/sdr/KY1R20230424715), Apr 20, 2023: RELAY. INACCURATE. DURING TROUBLESHOOTING/REPAIR, A FAULTY ENGINE RELAYS BOX WAS FOUND TO BE CAUSING AN ERRONEOUS 1 EEC FAIL CAS MESSAGE. AN INSPECTED/TESTED ENGINE RELAYS BOX WAS
- [SDR KY1R20230424714](https://openairdocs.org/sdr/KY1R20230424714), Apr 20, 2023: RELAY. INCORRECT. PILOT DISCREPANCY: "NO. 1 EEC CAS ILLUMINATED ENROUTE TO PAD, CLEARED ON SUBSEQUENT START-UP." TROUBLESHOOTING FOUND THAT THE #1 ENGINE EEC INTEGRITY TO BE SATI
- [SDR U0GA ASR9556](https://openairdocs.org/sdr/U0GA%20ASR9556), Feb 3, 2023: LIGHT. SHORTED. WHILE BEING VECTORED TO ITIWE ON THE RNAV 36 APPROACH INTO KHUM, PASSENGERS IN THE CABIN OF THE AIRCRAFT STARTED YELLING TO GET THE CREW'S ATTENTION ABOUT A STR
- [SDR 2023FA0000032](https://openairdocs.org/sdr/2023FA0000032), Jan 18, 2023: LINK. CRACKED. DURING INSPECTION FOUND BLUE MAIN ROTOR TENSION LINKED CRACKED. INSTALLED NEW TENSION LINK.
- [SDR AC2A2022103113901](https://openairdocs.org/sdr/AC2A2022103113901), Oct 30, 2022: CONTROL MODULE. CRACKED. #2 PCM (HYDRAULIC POWER CONTROL MODULE) LEAKING AT CRACK IN BOSS CASTING.
- [SDR AC2A2022103013901](https://openairdocs.org/sdr/AC2A2022103013901), Oct 30, 2022: TAIL BOOM. UNSERVICEABLE. TAIL STRUCTURE HAS AREA OF DELAMINATION ON R/H SIDE.
- [SDR 2022FA0000646](https://openairdocs.org/sdr/2022FA0000646), Oct 26, 2022: AXLE. CORRODED. CUSTOMER REPORTED ROTOR BRAKE INOPERATIVE ON ARRIVAL AT REPAIR STATION FOR SCHEDULED INSPECTION. TROUBLESHOOTING REVEALED THE ROTOR BRAKE CALIPER WOULD NOT LOWE
- [SDR U0GA ASR12345](https://openairdocs.org/sdr/U0GA%20ASR12345), Sep 24, 2022: NONE. NONE. HEAVY SMOKE IN THE COCKPIT, UNCOMMANDED COLLECTIVE AND CYCLIC INPUT LEADING TO EMERGENCY DESCENT AND POWER CONTROL VIA ENGINE THROTTLES. AUTOROTATIVE LANDING PE
- [SDR 2022F00340](https://openairdocs.org/sdr/2022F00340), Sep 11, 2022: LIFE RAFT. ACTIVATED. RIGHT LIFE RAFT SELF-DEPLOYED WHILE IN HANGAR
- [SDR ALGAASR8579](https://openairdocs.org/sdr/ALGAASR8579), Sep 1, 2022: FIRE WARNING. FALSE INDICATION. AFTER LEVELING OFF AT 5000 FT THE NO 1 FIRE DET LIGHT IS ILLUMINATED. WE VERIFIED THERE WERE NO INSTRUMENT INDICATIONS OF A FIRE IN THE NO 1 ENGINE AND CONSULTE
- [SDR 2022F00337](https://openairdocs.org/sdr/2022F00337), Aug 29, 2022: DAMPER. DEPARTED. ON A NORMAL APPROACH TO THE H AT THE NORTH RAMP, AT ABOUT 150 AGL, WE SUDDENLY FELT A STRONG VIBRATION. WE PROCEEDED TO LAND AND SHUT DOWN ON THE H (NO TAXI). P
- [SDR KY1R2020713](https://openairdocs.org/sdr/KY1R2020713), Jul 11, 2022: LIGHT. SHORTED. DURING THE TECHNICIAN'S DAILY INSPECTION, THE LEFT POSITION LIGHT ASSEMBLY WAS FOUND TO BE INOPERATIVE, WHICH WAS INSTALLED 4.7 FLIGHT HOURS EARLIER DUE TO FAIL
- [SDR 2022F00267](https://openairdocs.org/sdr/2022F00267), Jun 28, 2022: NONE. NONE. NO 1 FIRE DET CAUTION LIGHT ILLUMINATED WITH NO INDICATION OF FIRE AND RETURNED TO BASE.
- [SDR AC2A2022061313901](https://openairdocs.org/sdr/AC2A2022061313901), Jun 12, 2022: SMOKE DETECTOR. INTERMITTENT. PILOT'S REPORT - DESCRIPTION: N639MC DISPATCH ON A NORMAL PASSENGER FLIGHT TO CONQUEROR AND ROWAN WITH 5 PAX ONBOARD. AFTER NORMAL RUNUP AND RELEASE FOR ATC, DE

All 321: https://openairdocs.org/model/leonardo-aw139/reports.md

## STCs that may be installed (OpenAirDocs) (77, first 50)

Approved for this model: the STC's model list names it on its data sheet, or a series that includes it. In force first, then newest. The registry doesn't record which STCs an aircraft has.

- [STC SR04481AT](https://openairdocs.org/stc/SR04481AT): Installation of LED steerable searchlight/landing light assembly in replacement to the legacy steerable searchlight/landing light assembly. Sterling Helicopter
- [STC SR12212IB](https://openairdocs.org/stc/SR12212IB): Installation of Mission Cabin Equipment. ICARUS Aero Inc
- [STC SR03024NY](https://openairdocs.org/stc/SR03024NY): Installation of Aerolite GmbH Emergency Medical System (EMS) Equipment P/N 139250-501. Aerolite AG
- [STC SR04585NY](https://openairdocs.org/stc/SR04585NY): Replacement of Vertical and Horizontal Stabilizer Lights with LED Position/Anti-collision Lights. Whelen Aerospace Technologies
- [STC SR11945MC](https://openairdocs.org/stc/SR11945MC): Modify AW139 to expand the flight envelope for 7040 kg maximum gross weight and enable CAT II ILS capability, including cockpit software upgrade. The Boeing Company
- [STC SR00228IB](https://openairdocs.org/stc/SR00228IB): Installation of Actuator Assembly Replacement Kit P/N 318783a for Floats Inflation System. AERO SEKUR S.P.A
- [STC SR04731NY](https://openairdocs.org/stc/SR04731NY): Installation of NNSA Detector and Workstation Interior Layout Provisions. Mecaer Aviation Group
- [STC SR02473AK](https://openairdocs.org/stc/SR02473AK): Installation of the L-3 Communications NGT-9000R/RD and NGT-9000/D ADS-B IN/OUT system. StandardAero Atlantic USA Inc
- [STC SR04729NY](https://openairdocs.org/stc/SR04729NY): Installation of a Davtron Digital Cabin Air Temperature System. Mecaer Aviation Group
- [STC SR00179IB](https://openairdocs.org/stc/SR00179IB): Installation of SKYTRAC SDL-350 Flight Following/SATCOM System. SKYTRAC Systems Ltd
- [STC SR00162IB](https://openairdocs.org/stc/SR00162IB): Installation of SKYTRAC SDL-350 Flight Following/SATCOM System (Provisions Only). SKYTRAC Systems Ltd
- [STC SR00186MC](https://openairdocs.org/stc/SR00186MC): Installation of : Crash-Resistant, Ballistically Tolerant Fuel Tanks, New Pilot Seats, New Cabin Seats (Mulitiple Configurations) and Weight Saving Modification. The Boeing Company
- [STC SR00222MC](https://openairdocs.org/stc/SR00222MC): Installation of a LifePort Isolated Personnel Stacking Litter (IPSL) and Aft Facing Troop Seat. Life Port LLC
- [STC SR00207MC](https://openairdocs.org/stc/SR00207MC): Integrate avionics equipment into the AW139 cockpit software and modify mission equipment. The Boeing Company
- [STC SH3319NM](https://openairdocs.org/stc/SH3319NM): Installation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system,. Precise Flight Inc
- [STC SR00384BO](https://openairdocs.org/stc/SR00384BO): Installation of a Satcom and Flight Data Monitoring System KIT 139-SAT-100. Outerlink Corporation
- [STC SR04785NY](https://openairdocs.org/stc/SR04785NY): Installation of Outerlink Corporation Air IP system. Sterling Helicopter
- [STC SR00049IB](https://openairdocs.org/stc/SR00049IB): Installation of VIP 87 Interiors P/N 6AB1AD008-001. Mecaer Aviation Group S.p.A
- [STC SR04718NY](https://openairdocs.org/stc/SR04718NY): Installation of RDR-7000 Weather Radar. Scandinavian Avionics Design ApS
- [STC SR04472CH](https://openairdocs.org/stc/SR04472CH): Installation of a Honeywell RDR-7000 Weather Radar System. Honeywell International Inc
- [STC SR01949LA](https://openairdocs.org/stc/SR01949LA): Installation of Apical Industries, Inc. Liferaft Kit. Dart Aerospace ULC
- [STC SR04207NY](https://openairdocs.org/stc/SR04207NY): Installation of Rosen R2181000 Sunvisor Assembly. Mecaer Aviation Group Inc
- [STC SR00184MC](https://openairdocs.org/stc/SR00184MC): Expands the operating envelope without an increase to the currently certified maximum gross weight. The Boeing Company
- [STC SR04589NY](https://openairdocs.org/stc/SR04589NY): Installation of Recognition Lights, Configurations #1 thru #4. Aviation Completion Innovations Inc
- [STC SR03007NY](https://openairdocs.org/stc/SR03007NY): Installation of two Class 2 Electronic Flight Bag (EFB) mounting device arm-mounted. Aviation Completion Innovations Inc
- [STC SR01064DE](https://openairdocs.org/stc/SR01064DE): Installation of Axnes PNG wireless intercom extension system. Axnes Inc
- [STC SR02330AK](https://openairdocs.org/stc/SR02330AK): Installation of the Max-Viz® Enhanced Vision System (EVS) Models 1000/1500 and associated hardware. PECO Inc
- [STC SR09911AC](https://openairdocs.org/stc/SR09911AC): Installation of alternate hoist cable. Breeze Eastern LLC
- [STC SR03250NY](https://openairdocs.org/stc/SR03250NY): Installation of the dedicated EMS Equipment, P/N 139-0004728-501. Aerolite AG
- [STC SR09628RC](https://openairdocs.org/stc/SR09628RC): Installation of Sky Connect Phone and Tracker System. Honeywell International Inc
- [STC SR00925DE](https://openairdocs.org/stc/SR00925DE): Installation of Garmin GTX 335/335R and GTX345/345R transponders to provide ADS-B Out and In functionality. Peregrine
- [STC SR02614NY-D](https://openairdocs.org/stc/SR02614NY-D): Installation of the Medical Litter System. LifePort LLC
- [STC SR04384NY](https://openairdocs.org/stc/SR04384NY): Installation of P/N 139084-501 for 3 stretcher kit with relevant cabin floor rails and featuring each, dedicated oxygen and electrical distribution systems and oxygen bottles stowage provisions. Aerolite Max Bucher AG
- [STC SR04383NY](https://openairdocs.org/stc/SR04383NY): Installation of a Technisonic TDFM-9100 Multiband P25 Airborne Transceiver System. Shock Trauma Air Rescue Service
- [STC SR02054LA](https://openairdocs.org/stc/SR02054LA): Installation of an Emergency Medical System. LifePort LLC
- [STC SR02136LA](https://openairdocs.org/stc/SR02136LA): Installation of a Supplement Oxygen System. LifePort LLC
- [STC SR02145LA](https://openairdocs.org/stc/SR02145LA): Installation of a Medical Litter System. LifePort LLC
- [STC SR03060NY](https://openairdocs.org/stc/SR03060NY): Installation of Engine Wash Kit. Aviation Completion Innovations Inc
- [STC SR04310NY](https://openairdocs.org/stc/SR04310NY): Installation of the Cabin Door Fixed Handle. Icarus Aero Inc
- [STC SR03265CH](https://openairdocs.org/stc/SR03265CH): Install air ambulance conversion. Spectrum Aeromed LLC dba Spectrum Aeromed
- [STC SR02325NY](https://openairdocs.org/stc/SR02325NY): Installation of Cabin Interior Sound Reduction Wall Panels System. Aviation Completion Innovations Inc
- [STC SR02326NY](https://openairdocs.org/stc/SR02326NY): Installation of Cabin Door Step System. Aviation Completion Innovations Inc
- [STC SR02751NY](https://openairdocs.org/stc/SR02751NY): Installation of a Max-Viz, Inc. Enhanced Vision System (EVS) Model 1500. Aviation Completion Innovations Inc
- [STC SR02753NY](https://openairdocs.org/stc/SR02753NY): Installation of a Sagem Avionics, Inc; ICDS-10 Multi Functions Display. Aviation Completion Innovations Inc
- [STC SR03476NY](https://openairdocs.org/stc/SR03476NY): The installation of electrically operated cabin window shades. Aviation Completion Innovations Inc
- [STC SR04264NY](https://openairdocs.org/stc/SR04264NY): Installation of Garmin GDL84H ADS-B System. Maxcraft Avionics Ltd
- [STC SR02138SE](https://openairdocs.org/stc/SR02138SE): Installation of Dart D139-799 Maintenance Kits. Dart Aerospace USA Inc
- [STC SR00826DE](https://openairdocs.org/stc/SR00826DE): Installation of Honeywell Sky Connect Tracker III system. Cert Works LLC
- [STC SR02104SE](https://openairdocs.org/stc/SR02104SE): Installation of a Supplemental Lighting System; manufactured and installed in accordance with Aviation Specialties Unlimited (ASU) Master Drawing List MDL-139004-3, Rev. A, dated February 1, 2011, or later FAA-approved revisions and maintained in a accordance with ASU Instructions for Continued Airworthiness ICA-139004-4, Rev IR, dated July 7, 2010, or later FAA-accepted revisions. Aviation Specialties Unlimited Inc
- [STC SR02772CH](https://openairdocs.org/stc/SR02772CH): Installation of an Inlet Barrier Filter (IBF) System in accordance with Aerospace Filtration Systems, Inc. Installation-IBF System Drawing No. 122000-010, Revision B, dated September 28, 2009, or later FAA Approved revision. Donaldson Company Inc

All 77: https://openairdocs.org/model/leonardo-aw139/stcs.md

## The same model under other registry codes

Amateur-built copies and renamed makers get their own codes.

- [Agustawestland Philadelphia AW139](https://openairdocs.org/model/agustawestland-philadelphia-aw139): 99 registered aircraft, registry code 0260400
- [Agusta Aerospace AW139](https://openairdocs.org/model/agusta-aerospace-aw139): 21 registered aircraft, registry code 0260106
- [Agusta AW139](https://openairdocs.org/model/agusta-aw139): 14 registered aircraft, registry code 0260111
- [Leonardo Helicopters US AW139](https://openairdocs.org/model/leonardo-helicopters-us-aw139): 6 registered aircraft, registry code 3360100
- [Agustawestland AW139](https://openairdocs.org/model/agustawestland-aw139): 3 registered aircraft, registry code 0260403

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