# Final NTSB investigations: Pratt & Whitney PW4000 series

NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports.

Page 1 of 2 · 61 cases

## Latest cases

- [NTSB DCA25LA091](https://openairdocs.org/ntsb/DCA25LA091.md): Boeing 767-322 · Gulf of America (Gulf of Mexico) · Accident · Serious injuries · Class 4 · Limited · Final report · Dec 29, 2024 · N647UA · No damage
  > An encounter with an area of clear air turbulence during cruise, which resulted in a serious injury to a flight attendant.
- [NTSB DCA25LA023](https://openairdocs.org/ntsb/DCA25LA023.md): Boeing 767-322 · Kingston, Jamaica · Accident · Serious injuries · Class 4 · Limited · Final report · Nov 3, 2024 · N651UA · No damage
  > An inadvertent encounter with convective turbulence while in enroute cruise flight.
- [NTSB DCA24LA295](https://openairdocs.org/ntsb/DCA24LA295.md): Airbus A330-323 · Atlanta, GA · Accident · No injuries · Class 4 · Limited · Final report · Aug 31, 2024 · N808NW · 2 aircraft · Minor damage
  > Delta Air Lines flight crew’s incorrect evaluation of the clearance between their airplane and the airplane directly ahead of them as they made a 90 degree right turn onto an adjacent taxiway.
- [NTSB DCA24LA097](https://openairdocs.org/ntsb/DCA24LA097.md): Boeing 777-222ER · Kelsey, NY · Accident · Serious injuries · Class 3 · Limited · Final report · Feb 10, 2024 · N788UA · No damage
  > The airplane’s encounter with an unanticipated localized region of moderate-to-severe turbulence while in instrument meteorological conditions (IMC) associated with strong upper-level wind shear and convective cells. Contributing to the severity of the…
- [NTSB DCA23LA421](https://openairdocs.org/ntsb/DCA23LA421.md): Boeing 777-222 · Over the (Atlantic Ocean) · Accident · Serious injuries · Class 4 · Limited · Final report · Aug 18, 2023 · N209UA · No damage
  > An inadvertent encounter with clear air turbulence during cruise flight.
- [NTSB DCA23LA409](https://openairdocs.org/ntsb/DCA23LA409.md): Boeing 767-322 · Chantilly, VA · Accident · Class 4 · Limited · Final report · Aug 3, 2023 · N676UA · Substantial damage
  > Improper overhaul of the trunnion cross-pin hole that resulted in the development of stress corrosion cracking and eventual failure of the right forward trunnion.
- [NTSB DCA23LA384](https://openairdocs.org/ntsb/DCA23LA384.md): Boeing 767-322 · Houston, TX · Accident · No injuries · Class 3 · Limited · Final report · Jul 29, 2023 · N641UA · Substantial damage
  > The first officer’s improper control inputs after the airplane touched down. Contributing to the severity of the damage was the flight crew’s lack of recognition that the speedbrakes were not armed, which led to their delayed deployment.
- [NTSB DCA23LA172](https://openairdocs.org/ntsb/DCA23LA172.md): Boeing 777 · Kahului, HI · Incident · No injuries · Class 4 · Limited · Final report · Dec 19, 2022 · N212UA · No damage
  > The flight crew’s failure to manage the airplane’s vertical flightpath, airspeed, and pitch attitude following a miscommunication about the captain’s desired flap setting during the initial climb.
- [NTSB DCA22LA179](https://openairdocs.org/ntsb/DCA22LA179.md): Boeing 767-332 · New York, NY · Incident · No injuries · Class 4 · Limited · Final report · Jul 7, 2022 · N181DN · No damage
  > The failure of maintenance personnel to close the drain mast heater circuit breakers which resulted in the formation of ice in the forward drain mast, an improper flow of wastewater into the main landing gear wheel well, and the formation of ice on one or…
- [NTSB DCA21LA229](https://openairdocs.org/ntsb/DCA21LA229.md): Boeing 767-332 · Seattle, WA · Accident · Serious injuries · Class 4 · Limited · Final report · Sep 1, 2021 · N196DN · No damage
  > The flightcrew’s failure to set the hydraulic panel correctly during the execution of the pushback checklist, and when the hydraulic panel setting was corrected, that resulted in the airplane coming to a sudden stop and a flight attendant receiving a serious…
- [NTSB DCA21LA210](https://openairdocs.org/ntsb/DCA21LA210.md): Mcdonnell Douglas MD-11F · Phoenix, AZ · Accident · No injuries · Class 4 · Limited · Final report · Aug 12, 2021 · N296UP · Substantial damage
  > The flight crew’s incorrect pitch attitude during go-around.
- [NTSB DCA21FA085](https://openairdocs.org/ntsb/DCA21FA085.md): Boeing 777-222 · Broomfield, CO · Incident · No injuries · Class 3 · Field · Final report · Feb 20, 2021 · N772UA · Minor damage
  > The fatigue failure of the right engine fan blade. Contributing to the fan blade failure was the inadequate inspection of the blades, which failed to identify low-level indications of cracking, and the insufficient frequency of the manufacturer’s inspection…
- [NTSB DCA19CA189](https://openairdocs.org/ntsb/DCA19CA189.md): Boeing 767 · San Juan, PR · Accident · Serious injuries · Class 4 · Data collection · Final report · Jul 22, 2019 · N663UA · No damage
  > An encounter with convective turbulence during cruise flight.
- [NTSB DCA19CA034](https://openairdocs.org/ntsb/DCA19CA034.md): Boeing 767 · SUNNS intersection, Osaka, Japan · Accident · Serious injuries · Class 4 · Data collection · Final report · Dec 4, 2018 · N193DN · No damage
  > The airplane’s encounter with severe turbulence.
- [NTSB DCA18LA163](https://openairdocs.org/ntsb/DCA18LA163.md): Airbus A330 323 · Atlanta, GA · Accident · No injuries · Class 3 · Limited · Final report · Apr 18, 2018 · N806NW · Substantial damage
  > The flight crew’s delayed landing after an in-flight engine fire, which reignited after both fire bottles were discharged and resulted in substantial damage to an engine pylon. Contributing to the delayed landing was likely the flight crew’s perception that…
- [NTSB DCA17LA173](https://openairdocs.org/ntsb/DCA17LA173.md): Airbus 330 · East Hampton, NY · Accident · Serious injuries · Limited investigation · Final report · Aug 5, 2017 · N276AY · No damage
  > an inadvertent encounter with convective turbulence.
- [NTSB ENG17IA026](https://openairdocs.org/ntsb/ENG17IA026.md): Boeing 747 451 · Tokyo, Japan · Incident · No injuries · Incident investigation · Final report · Jun 7, 2017 · N668US · No damage
  > The PW4056 engine lost power due to the fatigue fracture of a 5th stage compressor blade. The cause of the fatigue fracture could not be determined.
- [NTSB ENG17IA003](https://openairdocs.org/ntsb/ENG17IA003.md): Airbus A330 223 · Seattle, WA · Incident · No injuries · Incident investigation · Final report · Oct 26, 2016 · N855NW · No damage
  > A No. 1 engine fire caused by a fuel manifold supply line high cycle fatigue crack which led to a fuel leak that subsequently ignited on hot engine case surfaces. The fatigue crack originated and progressed due to elevated fuel manifold assembly vibration…
- [NTSB DCA16CA220](https://openairdocs.org/ntsb/DCA16CA220.md): Boeing 767 322 · International Waters, A1 · Accident · Serious injuries · Data collection · Final report · Aug 31, 2016 · N657UA · No damage
  > an inadvertent encounter with severe convective turbulence.
- [NTSB ENG16IA001](https://openairdocs.org/ntsb/ENG16IA001.md): Boeing 747 · Russian airspace, Japan · Incident · No injuries · Incident investigation · Final report · Oct 2, 2015 · N662US · Minor damage
  > The PW4056 engine experienced an in-flight loss of power because of damage to the low-pressure turbine (LPT) because of the inadequate overhaul inspection and repair instructions that existed at the time of the LPT module's last overhaul. A vane hook in the…
- [NTSB ENG14IA027](https://openairdocs.org/ntsb/ENG14IA027.md): Boeing 747 · Atlanta, GA · Incident · No injuries · Incident investigation · Final report · Sep 21, 2014 · N669US · No damage
  > Turbine Overhaul Service's aggressive grit blasting and incomplete masking of the blade root neck that allowed the no grit blast area being exposed during the overhaul of the blade resulting in blasting media being embedded in the blade root from which a…
- [NTSB DCA14CA157](https://openairdocs.org/ntsb/DCA14CA157.md): Boeing 767 322 · Reykjavik, Iceland · Accident · Serious injuries · Data collection · Final report · Aug 18, 2014 · N666UA · No damage
  > The capabilities of the beverage cart were exceeded which resulted in the cart toppling over and fracturing the flight attendant's foot.
- [NTSB DCA14CA083](https://openairdocs.org/ntsb/DCA14CA083.md): Airbus A330 323 · Seattle (Pacific Ocean) · Accident · Serious injuries · Data collection · Final report · Mar 17, 2014 · N803NW · No damage
  > the flight attendant inadvertently tripping over a passenger's foot that was protruding into the aisle, which resulted in the flight attendant fracturing her foot.
- [NTSB DCA14CA014](https://openairdocs.org/ntsb/DCA14CA014.md): Boeing 767 322 · Houston, TX · Accident · Serious injuries · Data collection · Final report · Oct 18, 2013 · N665UA · No damage
  > The airplane's inadvertent encounter with clear air turbulence during cruise flight, which resulted in a serious injury to a flight attendant.
- [NTSB WPR13LA131](https://openairdocs.org/ntsb/WPR13LA131.md): Boeing 747-422 · Pacific Ocean, A1 · Accident · Serious injuries · Limited investigation · Final report · Feb 19, 2013 · N174UA · No damage
  > The flight’s encounter with moderate clear air turbulence while en route, which resulted in a serious injury to a flight attendant. Contributing to the accident was the lack of communication equipment in the rest compartment, which, if installed, could have…
- [NTSB ENG12IA003](https://openairdocs.org/ntsb/ENG12IA003.md): Boeing 747-451 · Detroit, MI · Incident · No injuries · Incident investigation · Final report · Oct 23, 2011 · N661US · Minor damage
  > The penetration of turbine blade fragments through the rear turbine case, which punctured the No. 4 bearing oil pressure supply tube, allowing misted oil to contact the hot engine case and ignite the undercowl fire. Contributing to the incident was the…
- [NTSB DCA11FA091](https://openairdocs.org/ntsb/DCA11FA091.md): Boeing 747-422 · Tangshan, China · Accident · Serious injuries · Field investigation · Final report · Jul 29, 2011 · N173UA · No damage
  > an inadvertent encounter with convectively induced turbulence likely due to radar limitations and convective weather developing upwards into the flight path.
- [NTSB DCA11CA084](https://openairdocs.org/ntsb/DCA11CA084.md): Bombardier CL600 2D24 · Boston, MA · Accident · No injuries · Data collection · Final report · Jul 14, 2011 · N132EV · 2 aircraft · Substantial damage
  > the B767 Captain's failure to maintain a safe clearance between his wing and the tail of the CRJ900 that was stopped on a taxiway.
- [NTSB ERA11LA266](https://openairdocs.org/ntsb/ERA11LA266.md): Airbus A330-323 · New York, NY · Accident · Serious injuries · Limited investigation · Final report · Apr 25, 2011 · N807NW · No damage
  > The flight attendant's inadvertent fall, which resulted in a serious injury.
- [NTSB DCA10IA082](https://openairdocs.org/ntsb/DCA10IA082.md): Boeing 767-322 · Chicago, IL · Incident · Minor injuries · Incident investigation · Final report · Aug 4, 2010 · N644UA · Minor damage
  > the brake fire after landing was caused by hydraulic fluid leaking on to hot brakes.
- [NTSB DCA10FA076](https://openairdocs.org/ntsb/DCA10FA076.md): Boeing 767 · Pacific Ocean (Pacific Ocean) · Accident · Serious injuries · Field investigation · Final report · Jul 15, 2010 · N184DN · No damage
  > an inadvertent encounter with clear air turbulence.
- [NTSB ENG10IA038](https://openairdocs.org/ntsb/ENG10IA038.md): Boeing 767 · Athens, Greece · Incident · No injuries · Incident investigation · Final report · Jun 16, 2010 · N196DN · Minor damage
  > A short circuit involving the light in position L3 on the squib test panel. The specific cause of the short circuit could not be determined.
- [NTSB OPS10IA020](https://openairdocs.org/ntsb/OPS10IA020.md): Boeing 777-222 · San Francisco, CA · Incident · No injuries · Incident investigation · Final report · Mar 27, 2010 · N216UA · 2 aircraft · No damage
  > The local controller's issuance of a takeoff clearance to the Boeing 777 without ensuring that approved separation would exist with the Cessna 182. Contributing to the incident were tower procedures that permitted transitioning aircraft to cross the runway 28…
- [NTSB DCA10CA032](https://openairdocs.org/ntsb/DCA10CA032.md): Boeing 747 · Anchorage, AK · Accident · Serious injuries · Data collection · Final report · Feb 19, 2010 · N173UA · Minor damage
  > an inadvertent encounter with clear air turbulence.
- [NTSB DCA10FA012](https://openairdocs.org/ntsb/DCA10FA012.md): Boeing 777-200 · New Market, VA · Accident · Serious injuries · Field investigation · Final report · Nov 19, 2009 · N209UA · No damage
  > The flight crew’s inadvertent encounter with a small area of cumulous clouds at night that resulted in moderate to severe convectively induced turbulence.
- [NTSB OPS10IA001](https://openairdocs.org/ntsb/OPS10IA001.md): Boeing 767 · Atlanta Hartsfield Intl. Apt. (KATL), GA · Incident · No injuries · Incident investigation · Final report · Oct 19, 2009 · N185DN · No damage
  > The flight crew’s failure to identify the correct landing surface due to fatigue. Contributing to the cause of the incident were (1) the flight crew’s decision to accept a late runway change, (2) the unavailability of the approach light system and the…
- [NTSB DCA09IA064](https://openairdocs.org/ntsb/DCA09IA064.md): Airbus A330-323 · Kagoshima, Japan · Incident · No injuries · Incident investigation · Final report · Jun 23, 2009 · N805NW · No damage
  > Brief and temporary blockage of the pitot probes in cruise flight, most likely due to ice crystals aloft, leading to erroneous airspeed indications and airplane automation degradation as designed. Contributing to the incidents were design features of the…
- [NTSB OPS08IA007](https://openairdocs.org/ntsb/OPS08IA007.md): Boeing 737-700 · Seattle, WA · Incident · No injuries · Incident investigation · Final report · Jul 3, 2008 · N339AT · 2 aircraft · No damage
  > The diverted attention during taxi of the flight crew in the other aircraft. Contributing to the incident was the air traffic control clearance was not followed by the flight crew of the other aircraft.
- [NTSB CHI08FA050](https://openairdocs.org/ntsb/CHI08FA050.md): Boeing 777-222 · Chicago, IL · Accident · Serious injuries · Field investigation · Final report · Dec 14, 2007 · N220UA · Minor damage
  > Emergency evacuation due to dense smoke in the cabin and the possibility of an on-board fire, which resulted in a serious injury to one of the 264 passengers and crew. An additional cause was the failure of an engine bearing, allowing oil to migrate into the…
- [NTSB LAX07LA204](https://openairdocs.org/ntsb/LAX07LA204.md): Boeing 747-422 · Oceanic · Accident · Serious injuries · Limited investigation · Final report · Jun 27, 2007 · N120UA · No damage
  > An in-flight encounter with turbulence that resulted in serious injury to a flight attendant.
- [NTSB CHI07LA093](https://openairdocs.org/ntsb/CHI07LA093.md): Boeing 767-300 · Chicago, IL · Accident · No injuries · Limited investigation · Final report · Mar 16, 2007 · N662UA · Substantial damage
  > The contained fan blade tip separation following the ingestion of several birds into the left engine during takeoff and the lack of an adequate response time available to crew to avert the bird strike.
- [NTSB NYC06LA151](https://openairdocs.org/ntsb/NYC06LA151.md): Boeing 767-300 · Dulles, VA · Accident · No injuries · Limited investigation · Final report · Jun 17, 2006 · N653UA · Substantial damage
  > The driver's failure to follow company standard operating procedures. A factor was the driver's diverted attention to an on-time departure.
- [NTSB DEN06IA034](https://openairdocs.org/ntsb/DEN06IA034.md): Boeing B777-200B · Denver, CO · Incident · No injuries · Incident investigation · Final report · Jan 19, 2006 · N798UA · Minor damage
  > the truck driver's failure to maintain clearance from the airplane and the boom operator's failure to adequately clear the boom from the airplane. Contributing to the accident was the low visibility due to snow and mist.
- [NTSB SEA05LA184](https://openairdocs.org/ntsb/SEA05LA184.md): Airbus Industrie A330-223 · Portland, OR · Accident · No injuries · Limited investigation · Final report · Aug 29, 2005 · N855NW · 2 aircraft · Minor damage
  > The failure of the flightcrew of the other airplane to maintain clearance while taxiing.
- [NTSB ANC05IA064](https://openairdocs.org/ntsb/ANC05IA064.md): McDonnell Douglas MD-11 · Anchorage, AK · Incident · No injuries · Incident investigation · Final report · Apr 28, 2005 · N277WA · Minor damage
  > The inadequate installation of the cockpit security door locking device, which resulted in smoke in the cockpit during normal cruise, and a precautionary landing. A factor associated with the incident was the manufacturer's insufficiently defined installation…
- [NTSB ANC05IA002](https://openairdocs.org/ntsb/ANC05IA002.md): Boeing MD-11F · Anchorage, AK · Incident · No injuries · Incident investigation · Final report · Oct 9, 2004 · N275WA · Minor damage
  > The operator's failure to provide sufficient weight and balance information to the flight crew, which resulted in a center of gravity aft of the limit, and a tail strike during the takeoff roll. Factors associated with the incident are the operator's improper…
- [NTSB LAX04LA050](https://openairdocs.org/ntsb/LAX04LA050.md): Boeing 747-422 · San Francisco, CA · Accident · No injuries · Limited investigation · Final report · Nov 14, 2003 · N178UA · Substantial damage
  > a tail strike due to a combination of the wind shifting from a headwind to a tailwind during rotation, and the pilot's control inputs for the crosswind condition.
- [NTSB LAX04LA007](https://openairdocs.org/ntsb/LAX04LA007.md): Boeing 777-22B · San Francisco, CA · Accident · No injuries · Limited investigation · Final report · Oct 7, 2003 · N222UA · 2 aircraft · Substantial damage
  > the failure of the taxiing Boeing 777's flight crew to maintain clearance from a Boeing 777 that was being pushed back from the gate. Contributing to the accident was the failure of the local ramp controller to caution either aircrew of a possible movement…
- [NTSB CHI03LA237](https://openairdocs.org/ntsb/CHI03LA237.md): Boeing B777-222 · Chicago, IL · Accident · Serious injuries · Limited investigation · Final report · Jul 17, 2003 · N779UA · No damage
  > The turbulence encountered during the descent which seriously injured a passenger returning to her seat after the seat belt sign was activated. A factor was that it was not possible for the returning passenger to comply with the lit seat belt sign.
- [NTSB CHI03IA097](https://openairdocs.org/ntsb/CHI03IA097.md): Boeing 747-422 · Chicago, IL · Incident · No injuries · Incident investigation · Final report · Apr 1, 2003 · N175UA · No damage
  > Failure of company maintenance personnel to fully comply with published maintenance/inspection procedures, as well as the resulting inoperative drain heaters and restricted movement of the aileron control cables. Contributing factors were the impeded waste…

Next page: https://openairdocs.org/ntsb.md?engine=52119&status=final&page=2

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url
FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1
WHERE c."completionStatus" = 'Completed'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('52119'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=52119&status=final

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