# N639GG: 2012 Agustawestland Philadelphia AW139

- Status: Valid registration
- Airframe: Agustawestland Philadelphia AW139 (registry code 0260400, TCDS R00002RD (OpenAirDocs match))
- Engine: Pratt & Whitney Canada PT6C-67C (registry code 52174, TCDS E00068EN (OpenAirDocs match))
- Serial number: 41308
- Year built: 2012
- Type: Rotorcraft
- Airworthiness: Standard, transport
- Airworthiness date: September 27, 2012
- Certificate issued: October 11, 2012
- Expires: October 31, 2028
- Mode S code: A85FC8
- Registered owner: Chevron USA Inc
- Location: Picayune, MS
- Owner's area on the map: 30.5347° N, 89.6180° W: Placed by OpenAirDocs at the center of ZIP code 39466, within about 7 miles (OpenAirDocs)
- Page: https://openairdocs.org/aircraft/N639GG

ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination.

## ADs matched by airframe (Agustawestland Philadelphia AW139) (OpenAirDocs)

- [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
- [AD 2012-26-15 R1](https://openairdocs.org/ad/2012-26-15-R1): Navigation · Agusta AW139, A318-111, A318-112 and 70 more. Effective Dec 3, 2014
- [AD 2014-03-01](https://openairdocs.org/ad/2014-03-01): Fuselage Miscellaneous Structure · Agusta AB139 and AW139. Effective Apr 7, 2014
- [AD 2013-25-09](https://openairdocs.org/ad/2013-25-09): Nose Landing Gear Attach Section · Agusta AB139 and AW139. Effective Jan 28, 2014
- [AD 2013-22-16](https://openairdocs.org/ad/2013-22-16): Communications System Wiring · Agusta AW139. Effective Dec 13, 2013
- [AD 2013-15-01](https://openairdocs.org/ad/2013-15-01): JASC Code: 3060 Ice Protection · Agusta AB139 and AW139. Effective Oct 16, 2013
- [AD 2013-06-51](https://openairdocs.org/ad/2013-06-51): Equipment/Furnishings · Agusta A109, A109A, A109A II and 43 more. Effective Jul 15, 2013
- [AD 2013-10-01](https://openairdocs.org/ad/2013-10-01): Exterior lighting · Agusta AB139, AW139, MBB-BK 117 C-2 and 7 more. Effective Jun 20, 2013
- [AD 2012-21-52](https://openairdocs.org/ad/2012-21-52): Flight Controls · Agusta AW139. Effective Dec 26, 2012
- [AD 2012-12-10](https://openairdocs.org/ad/2012-12-10): Generator control unit · Agusta AB139 and AW139. Effective Jul 30, 2012
- [AD 2012-11-12](https://openairdocs.org/ad/2012-11-12): Main Rotor Control · Agusta AW139. Effective Jul 3, 2012
- [AD 2011-20-08](https://openairdocs.org/ad/2011-20-08): Modules and related connectors · Agusta AB139 and AW139. Effective Nov 21, 2011
- [AD 2011-20-06](https://openairdocs.org/ad/2011-20-06): Tailboom panels · Agusta AB139 and AW139. Effective Nov 14, 2011
- [AD 2009-15-14](https://openairdocs.org/ad/2009-15-14): Fire bottle, Fixed · Agusta AB139 and AW139. Effective Sep 9, 2009
- [AD 2009-06-07](https://openairdocs.org/ad/2009-06-07): Cockpit door windows · Agusta AB139 and AW139. Effective Mar 31, 2009
- [AD 2007-25-14](https://openairdocs.org/ad/2007-25-14): Tailpipe assembly · Agusta AB139 and AW139. Effective Dec 26, 2007

Historical (superseded or no longer in force): AD 2023-07-51, AD 2021-23-13, AD 2020-23-07, AD 2017-23-08, AD 2014-24-02, AD 2014-07-51, AD 2012-26-15, AD 2011-18-52, AD 2009-19-51, AD 2008-14-02

## ADs matched by engine (Pratt & Whitney Canada PT6C-67C) (OpenAirDocs)

- [AD 2013-03-14](https://openairdocs.org/ad/2013-03-14): Power turbine (PT) baffle · Pratt & Whitney Canada PT6C-67C. Effective Mar 26, 2013

## Information bulletins (advisory)

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

## Service difficulty reports (14)

- [SDR AC2A202503271391](https://openairdocs.org/sdr/AC2A202503271391), Mar 27, 2025: HOSE. 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 TH
- [SDR AC2A2021061313902](https://openairdocs.org/sdr/AC2A2021061313902), Jun 12, 2021: BEARING. MGB OIL COOLER FAN DRIVE SEAL LEAKING 463.2 HOURS AFTER OVERHAUL OF MGB CAUSING OIL TO CONTAMINATE OIL COOLER FAN BEARINGS WHICH ARE GREASE BEARINGS. FAN WAS RE
- [SDR AC2A2021061313901](https://openairdocs.org/sdr/AC2A2021061313901), Jun 12, 2021: SHAFT SEAL. MGB OIL COOLER FAN DRIVE SEAL LEAKING 463.2 HOURS AFTER OVERHAUL CAUSING OIL TO CONTAMINATE OIL COOLER FAN BEARINGS WHICH ARE GREASE BEARINGS. SEAL WAS REPLACED
- [SDR AC2A2020091813902](https://openairdocs.org/sdr/AC2A2020091813902), Sep 11, 2020: BOOT. MAIN ROTOR UPPER SWASHPLATE BOOT IS DETERIORATED, METAL RINGS LOOSE, NO ACCEPT/REJECT CRITERIA PROVIDED BY MANUFACTURE, NO DETAILED INSPECTION CRITERIA AVAILABL
- [SDR AC2A2020041013901](https://openairdocs.org/sdr/AC2A2020041013901), Apr 10, 2020: INTERMED GEARBOX. INTERMEDIATE GEARBOX (IGB) INPUT FLANGE P/N 3G6521A00232 S/N HCA3715 WAS WORN SPLINES TO LIMITS.
- [SDR AC2R2019062813901](https://openairdocs.org/sdr/AC2R2019062813901), Jun 29, 2019: STRUCTURE. CRACKS FOUND AT STA3120 OVERHEAD AFT AND FORWARD SIDE AT BOTH CB PANEL ANGLE LOWER ENDS.
- [SDR AC2R2019F00231](https://openairdocs.org/sdr/AC2R2019F00231), Jun 29, 2019: STRUCTURE. CRACKS FOUND AT STA3120 OVERHEAD AFT AND FORWARD SIDE AT BOTH CB PANEL ANGLE LOWER ENDS.
- [SDR AC2R2019050201](https://openairdocs.org/sdr/AC2R2019050201), Apr 30, 2019: PRESSURE SWITCH. WHILE ENTERING A LEFT DOWNWIND FOR RWY 18 INTO KGAO ABOUT 3 MILES SOUTH OF THE AIRFIELD, THE HYDRAULIC UTIL PRESS CAS ILLUMINATED. WENT TO THE HYDRAULIC SYNOPTI
- [SDR AC2A2020050113906](https://openairdocs.org/sdr/AC2A2020050113906), Sep 18, 2018: FILTER. IBF MAINTENANCE INDICATOR FOUND TO BE CRACKED.
- [SDR AC2A2020050113904](https://openairdocs.org/sdr/AC2A2020050113904), Sep 18, 2018: INDICATOR. IBF MAINTENANCE INDICATOR FOUND CRACKED. *SUPPLEMENTAL INFORMATION* PART NUMBER ENTERED ON ORIGINAL SDR IN SECTION 5 WAS IN ERROR. PART NUMBER WAS SUBMITTED AS 

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From OpenAirDocs.org, an independent open copy of FAA data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.