# Pratt & Whitney PW4168

- Type: Engine model (FAA registry)
- Registry code: 51509
- Manufacturer (registry): P & W
- Model: PW4168
- Engine type: Turbo-fan
- Power: 68,600 lb thrust
- Data sheet: [TCDS E36NE](https://openairdocs.org/tcds/E36NE) (OpenAirDocs)
- Holder: Pratt & Whitney Division
- Installed in: 0 registered aircraft
- Page: https://openairdocs.org/engine/pratt-whitney-pw4168

Model codes come from the FAA registry's reference file.

## ADs that may apply (OpenAirDocs)

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

- [AD 2021-22-14](https://openairdocs.org/ad/2021-22-14): Turbine Section · Pratt & Whitney Division PW4164, PW4164-1D, PW4168 and 4 more. Effective Dec 17, 2021
- [AD 2020-25-09](https://openairdocs.org/ad/2020-25-09): Turbine Section · Pratt & Whitney Division PW4164, PW4164-1D, PW4168 and 4 more. Effective Jan 14, 2021
- [AD 2019-06-07](https://openairdocs.org/ad/2019-06-07): Engine Fuel Distribution · Pratt & Whitney Division PW4164, PW4164-1D, PW4168 and 4 more. Effective May 2, 2019
- [AD 2016-08-09](https://openairdocs.org/ad/2016-08-09): HPC 10th stage disk · Pratt & Whitney Division PW4050, PW4052, PW4056 and 24 more. Effective Jun 1, 2016
- [AD 2015-22-03](https://openairdocs.org/ad/2015-22-03): LPT 4th stage IAS · Pratt & Whitney Division PW4050, PW4052, PW4056 and 24 more. Effective Dec 1, 2015
- [AD 2015-21-04](https://openairdocs.org/ad/2015-21-04): 6th stage low-pressure turbine (LPT) disk · Pratt & Whitney Division PW4164, PW4164-1D, PW4168 and 4 more. Effective Nov 27, 2015
- [AD 2015-17-17](https://openairdocs.org/ad/2015-17-17): Fuel leaks · Pratt & Whitney Division PW4164, PW4164-1D, PW4168 and 4 more. Effective Oct 2, 2015
- [AD 2012-14-09](https://openairdocs.org/ad/2012-14-09): 3rd and 4th stage vane fractures · Pratt & Whitney Division PW4050, PW4052, PW4056 and 24 more. Effective Nov 7, 2012
- [AD 2012-18-17](https://openairdocs.org/ad/2012-18-17): HPC drum rotor disk assembly · Pratt & Whitney Division PW4052, PW4056, PW4060 and 16 more. Effective Oct 22, 2012
- [AD 2012-18-03](https://openairdocs.org/ad/2012-18-03): 1st stage HPT air seal rings · Pratt & Whitney Division PW4050, PW4052, PW4056 and 18 more. Effective Oct 11, 2012
- [AD 2012-16-01](https://openairdocs.org/ad/2012-16-01): High-pressure turbine (HPT) stage 1 front hubs · Pratt & Whitney Division PW4052, PW4056, PW4060 and 14 more. Effective Sep 28, 2012
- [AD 2011-25-09](https://openairdocs.org/ad/2011-25-09): PW4000 turbofan engines · Pratt & Whitney Division PW4050, PW4052, PW4056 and 18 more. Effective Jan 10, 2012
- [AD 2010-24-09](https://openairdocs.org/ad/2010-24-09): No. 3 bearing oil pressure tubes · Pratt & Whitney Division PW4050, PW4052, PW4056 and 34 more. Effective Dec 28, 2010
- [AD 2007-26-20](https://openairdocs.org/ad/2007-26-20): LPT stage 4 disks · Pratt & Whitney Division PW4164, PW4168 and PW4168A. Effective Feb 7, 2008
- [AD 2006-16-05](https://openairdocs.org/ad/2006-16-05): Front pylon mount bolts · Pratt & Whitney Division PW4164, PW4168 and PW4168A. Effective Sep 8, 2006
- [AD 2005-25-09](https://openairdocs.org/ad/2005-25-09): Engine manufacturer's time limits section (TLS) · Pratt & Whitney Division PW4050, PW4052, PW4056 and 26 more. Effective Jun 12, 2006
- [AD 2003-09-02](https://openairdocs.org/ad/2003-09-02): 14th and 15th Stage Rubstrips · Pratt & Whitney Division PW4164, PW4168 and PW4168A. Effective Jun 3, 2003
- [AD 2001-05-07](https://openairdocs.org/ad/2001-05-07): Low Pressure Turbine (LPT) 4th Stage Air Seal · Pratt & Whitney Division PW4052, PW4056, PW4060 and 11 more. Effective Mar 30, 2001
- [AD 99-15-01](https://openairdocs.org/ad/99-15-01): Low Pressure Turbine Disks · Pratt & Whitney Division PW4056, PW4152, PW4156A and 3 more. Effective Sep 14, 1999
- [AD 98-19-03](https://openairdocs.org/ad/98-19-03): High Pressure Turbine Rotating Airseals · Pratt & Whitney Division PW4052, PW4056, PW4060 and 9 more. Effective Nov 9, 1998
- [AD 97-11-06](https://openairdocs.org/ad/97-11-06): Fan Blade Inspections · Pratt & Whitney Division PW4164 and PW4168. Effective Jun 11, 1997

Historical (superseded or no longer in force):

- [AD 2021-05-16](https://openairdocs.org/ad/2021-05-16) (historical): Turbine Section · Pratt & Whitney Division PW4164, PW4164-1D, PW4168 and 4 more. Effective May 7, 2021
- [AD 2016-22-05](https://openairdocs.org/ad/2016-22-05) (historical): Fuel nozzles · Pratt & Whitney Division PW4164, PW4164-1D, PW4168 and 4 more. Effective Dec 6, 2016
- [AD 2010-18-13](https://openairdocs.org/ad/2010-18-13) (historical): Blade · Pratt & Whitney Division PW4052, PW4056, PW4060 and 16 more. Effective Oct 18, 2010
- [AD 2000-16-02 R1](https://openairdocs.org/ad/2000-16-02-R1) (historical): Front Pylon Mount Bolts Made from INCO 718 Material and MP159 Material · Pratt & Whitney Division PW4164, PW4168 and PW4168A. Effective Feb 6, 2003
- [AD 2002-03-08](https://openairdocs.org/ad/2002-03-08) (historical): Time Limits Section of Engine Manuals (EM's) · Pratt & Whitney Division PW4050, PW4052, PW4056 and 25 more. Effective Apr 16, 2002
- [AD 2000-25-06](https://openairdocs.org/ad/2000-25-06) (historical): Low Pressure Turbine (LPT) 4th Stage Air Seal · Pratt & Whitney Division PW4052, PW4056, PW4060 and 11 more. Effective Dec 29, 2000
- [AD 2000-16-02](https://openairdocs.org/ad/2000-16-02) (historical): Front Pylon Mount Bolts · Pratt & Whitney Division PW4164, PW4168 and PW4168A. Effective Oct 16, 2000
- [AD 2000-12-02](https://openairdocs.org/ad/2000-12-02) (historical): Critical Life-Limited Part · Pratt & Whitney Division PW4050, PW4052, PW4056 and 24 more. Effective Sep 13, 2000
- [AD 99-08-15](https://openairdocs.org/ad/99-08-15) (historical): Pratt & Whitney Division PW4050, PW4052, PW4056 and 20 more. Effective May 13, 1999
- [AD 98-04-14](https://openairdocs.org/ad/98-04-14) (historical): Front Pylon Mount Bolts · Pratt & Whitney Division PW4164, PW4168 and PW4168A. Effective Mar 13, 1998

## Information bulletins (advisory) (4)

- [SAIB NE-16-01R1](https://openairdocs.org/saib/NE-16-01R1): Turbine Section. Issued Jan 14, 2016
- [SAIB NE-16-01](https://openairdocs.org/saib/NE-16-01) (historical): Turbine Section. Issued Oct 5, 2015
- [SAIB NE-15-19](https://openairdocs.org/saib/NE-15-19): Turbine Section. Issued Jul 14, 2015
- [SAIB NE-13-31](https://openairdocs.org/saib/NE-13-31): Turbine Engine Oil System  Scavenge Oil Tube Coking and Proper Cleaning at Overhaul. Issued May 9, 2013

## Registered aircraft

None registered with this engine model now.

## NTSB investigations

None matched to aircraft with this engine model.

## FAA accident and incident reports

None matched to aircraft with this engine model.

## Service difficulty reports (32)

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

- [SDR DALA2025090806595](https://openairdocs.org/sdr/DALA2025090806595), Sep 7, 2025: PLUG. MISSING. ATB DUE TO NR 2 ENG ANTI-ICE FAILURE. INSTALLED MISSING PLUG ON ANTI-ICE VALVE. OK FOR SERVICE. (7073340)
- [SDR DALA2024112011091](https://openairdocs.org/sdr/DALA2024112011091), Nov 20, 2024: ELEC CONNECTOR. UNSECURE. SHIP 3355 - ATB - DUE TO DUAL ENGINE BLEED FAULTS. CORRECTIVE ACTION: SECURED CANNON PLUG 9HA1, R/R NUMBER 1 AND NUMBER 2 PRVS, AND REPLACED SENSE LINE FOR NUMB
- [SDR DALA2024052805569](https://openairdocs.org/sdr/DALA2024052805569), May 25, 2024: ENGINE. ODOR. SHIP 3304 MUSTY ODOR NOTED IN FLIGHT DECK DURING CLIMBOUT AND DESCENT. CORRECTIVE ACTION: R/R #1 ENGINE PER A330 AMM 71-01. OK FOR SERVICE. (5323930)
- [SDR AALA201810029009](https://openairdocs.org/sdr/AALA201810029009), Sep 30, 2018: COMPRESSOR. STALLED. DURING INITIAL TAKE OFF, EXPERIENCED TWO VIOLENT COMPRESSOR STALLS ON THE RIGHT ENGINE. REJECTED TAKE OFF AND RETURNED BACK TO GATE. THE AIRCRAFT WAS REMOVED FR
- [SDR AN0R2017705009](https://openairdocs.org/sdr/AN0R2017705009), Jan 12, 2017: BEAM. WORN. FAN REVERSER ASSEMBLY WITH A WEAR AREA MEASURING UP TO .038 DEEP ALONG THE ENTIRE LENGTH OF THE LOWER LATCH BEAM AUXILIARY GUIDE RAIL.
- [SDR AN0R20170210003](https://openairdocs.org/sdr/AN0R20170210003), Jan 9, 2017: BEAM. WORN. FAN REVERSER LOWER LATCH BEAM EXHIBITS WEAR COMMON TO THE AUXILIARY GUIDE RAIL MEASURING .065 INCHES DEEP THE ENTIRE LENGTH OF GUIDE RAIL.
- [SDR AN0R20170210004](https://openairdocs.org/sdr/AN0R20170210004), Jan 9, 2017: BEAM. WORN. FAN REVERSER LOWER LATCH BEAM EXHIBITS WEAR MEASURING .045" DEEP COMMON TO AUXILIARY GUIDE RAIL ALONG ENTIRE LENGTH OF GUIDE RAIL.
- [SDR AN0R20170208002](https://openairdocs.org/sdr/AN0R20170208002), Dec 19, 2016: BEAM. WORN. FAN REVERSER ASSEMBLY WITH A WEAR AREA MEASURING UP TO .030 DEEP ALONG THE ENTIRE LENGTH OF THE LOWER LATCH BEAM AUXILIARY GUIDE RAIL.
- [SDR AN0R20170208001](https://openairdocs.org/sdr/AN0R20170208001), Dec 6, 2016: FRAME. CRACKED. FAN REVERSER FORWARD TORQUE BOX FRAME (LH) P/N: 73M100-003 EXHIBITED ONE CRACK APPROXIMATELY .650” LONG AT THE UPPER EOP.
- [SDR DALA1022133355](https://openairdocs.org/sdr/DALA1022133355), Sep 14, 2010: SEAT TRACK. CORRODED. DURING H-CHECK FOUND CORROSION ON SEAT TRACK AT Y1959, FR19 & FR24. REPAIRED IAW SRM 51-42-11.
- [SDR DALA1022153355](https://openairdocs.org/sdr/DALA1022153355), Sep 11, 2010: SEAT TRACK. CORRODED. DURING H-CHECK FOUND CORROSION ON SEAT TRACK AT Y450 FR62 TO FR65. REPAIRED IAW SRM 51-42-11.
- [SDR DALA1022183355](https://openairdocs.org/sdr/DALA1022183355), Sep 11, 2010: SEAT TRACK. CORRODED. DURING H-CHECK FOUND CORROSION ON SEAT TRACK AT Y450 FR53.8-FR53.9 & FR54. REPAIRED IAW SRM 51-42-11.
- [SDR DALA1021563355](https://openairdocs.org/sdr/DALA1021563355), Sep 7, 2010: SEAT TRACK. CORRODED. DURING H-CHECK FOUND CORROSION ON SEAT TRACK AT Y1959, FR64, FR65 & FR 68. REPAIRED IAW SRM 53-42-11.
- [SDR DALA108453352](https://openairdocs.org/sdr/DALA108453352), Apr 24, 2010: SEAT TRACK. CORRODED. DURING H-CHECK FOUND CORROSION ON SEAT TRACK AT Y1959 FR58. REPAIRED IAW ERA 481350-14 REV O AND COMPLETED ASSOCIATED ERA 13-481350.
- [SDR DALA105543307](https://openairdocs.org/sdr/DALA105543307), Mar 14, 2010: SEAT TRACK. CORRODED. DURING "H" CHECK FOUND CORROSION ON SEAT TRACK AT Y450 FR69. REPLACED SEAT TRACK IAW SRM 51-42-11.
- [SDR BA08017](https://openairdocs.org/sdr/BA08017), May 1, 2008: WIRE HARNESS. FAULTY. PHL - FLT 754 EN-ROUTE PHL TO CDG. THE AIRCRAFT FAILED THE VERIFICATION FLIGHT FOR AN ENGINE 1 EGT INDICATION INOPERATIVE. THE FLIGHT RETURNED TO PHL AND LANDED
- [SDR BA08016](https://openairdocs.org/sdr/BA08016), Apr 23, 2008: RELAY. UNSERVICEABLE. PHL FLT 754 - EN ROUTE PHL - CDG. DURING FLIGHT, RECEIVED ECAM MESSAGE "AUTO FLT A/THR OFF", AND " ENG 1 EPR MODE FAULT". THE FLIGHT RETURNED TO FIELD PHL AND L
- [SDR USAA050179](https://openairdocs.org/sdr/USAA050179), Jan 14, 2005: FLOOR SUPPORT. CORRODED. BFM - S1 - AUX BEAM SUPPORT, (1.0 INCH L X 1.0 INCH W X .050 INCH D) CORROSION; LEVEL 2; TASK NR J7-900-09000-015, FR 71.8, Y2080- Z240. REMOVED AND REPLACED WI
- [SDR CA040617006](https://openairdocs.org/sdr/CA040617006), Jun 8, 2004: RELAY. FAILED. COFFEEMAKER WAS REMOVED DUE TO TRIPPING CIRCUIT BREAKER. STRIP REPORT REVEALED THAT THE UNAPPROVED RELAY WAS FITTED TO THE COFFEEMAKER. CORRECT P/N KR-90693-1 P
- [SDR CA030723006](https://openairdocs.org/sdr/CA030723006), Jul 20, 2003: WEB. TORN. (CAN) ON ARRIVAL, MAINTENANCE NOTICED APPROXIMATELY 18 INCHES OF METAL PROTRUDING INTO THE AIR STREAM OF NR 1 ENGINE INBOARD THRUST REVERSER, JUST FORWARD OF TH
- [SDR USAABA03017](https://openairdocs.org/sdr/USAABA03017), May 26, 2003: EEC. MALFUNCTIONED. PHL - FLT 196 - EN ROUTE, CREW RECEIVED THE ECAM WARNING 'ENG 1 FADEC A FAULT.' FLIGHT RETURNED TO PHL AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED
- [SDR CA030328006](https://openairdocs.org/sdr/CA030328006), Mar 27, 2003: SLIDE. MALFUNCTIONED. (CAN) DURING DEPLOYMENT OF SLIDE RAFT L1 AND L4, AUTOMATIC INFLATION DID NOT OCCUR. DOOR AND SLIDE BOTTLE PRESSURES WERE IN THE GREEN RANGE. DEPLOYMENT NORMAL U
- [SDR CA030304004](https://openairdocs.org/sdr/CA030304004), Mar 1, 2003: MOUNT. BURNED. (CAN) A/C ARRIVED YVR WITH APU INOP. INSPECTION OF THE 5000VE PANEL REVEALED THAT THE FUSE F/N 6KA1 WAS INFACT BLOWN. CLOSER INSPECTION ALSO FOUND THAT ONE STUD
- [SDR CA021223004](https://openairdocs.org/sdr/CA021223004), Dec 21, 2002: CONTROLLER. MALFUNCTIONED. (CAN) REJECTED TAKE-OFF AT APPROX. 50 KTS FOR ECAM WARNING: ENG-THRUST LOSS (AMBER) ABNORMAL WING A. ICE (AMBER)THRUST LEVERS, IDLE (BLUE) AIRCRAFT RETURNED TO 
- [SDR CA011018006](https://openairdocs.org/sdr/CA011018006), Oct 2, 2001: O-RING. FRETTED. (CAN) A/C EXPERIENCED LOSS OF YELLOW HYDRAULIC SYS, ECAM WARNING - HYD RSVR LO/HYD SYS LO PR, APPROX 1(ONE) HR INTO FLT. FLT CREW SECURED SYS AS PER THE AFM&DIV
- [SDR CA010726026](https://openairdocs.org/sdr/CA010726026), Jul 24, 2001: PROBE. BLOCKED. (CAN) A/C ARRIVED WITH CAPTS. AIRSPEED READING INCORRECTLY. MTCE SWAPPED ADIRU #1 INTO #3 POSITION TO DEFER WITH LEAST AMOUNT OF IMPACT. A/C DEPARTED AND REJECT
- [SDR CA991116012](https://openairdocs.org/sdr/CA991116012), Nov 13, 1999: BLADE. CRACKED. (CAN) DURING ROUTINE INSPECTION OF RAM AIR TURBINE, SCRATCH FOUND ON BLADE ROOT. FURTHER INVESTIGATION REVEALED A CRACK. THE SUBMITTER INDICATED THAT THERE IS N
- [SDR CA991103045](https://openairdocs.org/sdr/CA991103045), Oct 23, 1999: O-RING. CRACKED. (CAN) THRUST REVERSER HYDRAULIC FILTER ASSY O-RING WAS FOUND CUT AND EXTRUDED.
- [SDR CA990907059](https://openairdocs.org/sdr/CA990907059), Aug 12, 1999: ECAM. FALSE SIGNAL. (CAN) ECAM MESSAGE ON TAKEOFF INDICATED LOSS OF THRUST AND ENGINE ANTI-ICE FAULT WITH NO APPARENT FAULT. AIRBUS OIT 999.0106/96/SB AND TFU 73.25.000016.
- [SDR CA990728081](https://openairdocs.org/sdr/CA990728081), Jul 21, 1999: BLOCKER DOOR. DETACHED. (CAN) DURING DAILY INSPECTION, NR 2 ENGINE BLOCKER DOOR WAS FOUND TO BE HANGING DOWN IN THE FAN BYPASS DUCT. INVESTIGATION REVEALED A STRUCTURAL FAILURE OF UNKN
- [SDR CA981019010](https://openairdocs.org/sdr/CA981019010), Sep 12, 1998: VALVE. FAILED. (CAN) THE AIRCRAFT WAS ON A TRANSIT STOP AND THE ENGINES WERE SERVICED WITH OIL. ON CLIMB OUT, THE NR 2 ENGINE OIL PRESSURE INDICATION FLUCTUATED AND THEN WENT 
- [SDR 98ZZZX3615](https://openairdocs.org/sdr/98ZZZX3615), Jun 26, 1998: BLADE. DAMAGED. UPON ATTAINING CRUISE ALTITUDE FL 290, ENGINE STALLED AND FIRE WARNING ACTIVATED. DISASSEMBLY INSPECTION REVEALED TWELVE 2ND STAGE TURBINE BLADES BROKEN AT PLAT

## STCs that may be installed (OpenAirDocs) (2)

Approved for this engine 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 SE00053AT-D](https://openairdocs.org/stc/SE00053AT-D): Modification of fan exit guide vane, to line replaceable unit configuration. Chromalloy Gas Turbine Corp
- [STC SE825NE](https://openairdocs.org/stc/SE825NE): PW Thrust Reverser. Pratt & Whitney

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