# Service difficulty reports: Pratt & Whitney PW4056

A list on [Pratt & Whitney PW4056](https://openairdocs.org/engine/pratt-whitney-pw4056.md).

Newest first. General aviation reporting is voluntary.

Page 1 of 252 · 12,594 reports

- [SDR CALA2026073118122](https://openairdocs.org/sdr/CALA2026073118122.md): Wire · detached · Jul 30, 2026 · N665UA · Boeing 767322 · Light System Wiring
  > DOOR 1L AND 1R EXIT THRESHOLD LIGHT STAY ON WHEN SWITCHED OFF FOUND PIN 3 OPENED BETWEEN CONNECTOR D10718 AND D6410 IAW WDM 33-51-11-2C SH2 FOUND WIRE W822-003-22 SNAPPED OFF BELOW DOOR 1L REAR FACING CREW SEAT. WIRE SPLICED PER LP 9788837. BATTERY CHARGING PA
- [SDR U2RA2026071600037](https://openairdocs.org/sdr/U2RA2026071600037.md): Pump · leaking · Jul 12, 2026 · N729CA · Boeing 747412 · Hydraulic Pump (Electric/Engine), Main
  > EICAS -HYD QTY LOW 1- DISPLAYED DURING CRUISE. REPLACED LEAKING NR 1 AIR DRIVEN HYDRAULIC PUMP.
- [SDR KCSA20260619733](https://openairdocs.org/sdr/KCSA20260619733.md): Oil System · low · Jun 17, 2026 · N706CK · Boeing 7474B5F · Turbine Engine Oil System
  > ON DESCENT NOTICED STRONG ODOR OF OIL ON UPPER DECK AND MAIN DECK CREW REPORTED LOW OIL ON ENG 4, INDICATED 4 QUARTS. PERFORMED CONDITIONAL INSPECTION OF #4 ENG IAW FIM 21-00 TASK 810 NO EXTERNAL LEAKS FOUND. SERVICED ENG OIL IAW AMM 12-13-03.
- [SDR UIEA2026061200463](https://openairdocs.org/sdr/UIEA2026061200463.md): Chip Detector · unsecure · Jun 12, 2026 · N489MC · Boeing 747412F · Turbine Engine Accessory Drive
  > ENGINE 1 OIL QUANTITY LOSS IN FLIGHT, SHOWING 0 AT CRUISE STARTED AT 10 AFTER TAKEOFF. ACCOMPLISHED ENGINE OIL INSPECTION PER ECM 2026P-203 REV 0. NO LEAKS FOUND. NOTED MASTER GEARBOX CHIP DETECTOR IN RT THRUST REVERSER COWLING. INSPECTED AND REINSTALLED CHIP
- [SDR U2RA2026012600030](https://openairdocs.org/sdr/U2RA2026012600030.md): Battery · inoperative · Jan 19, 2026 · N756CA · Boeing 747412 · Emergency Lighting
  > DURING A-CHECK AT RKSI, WHILE ACCOMPLISHING T/C 33-050-01-01, FOUND 11 EACH EMERGENCY LIGHT INOPERATIVE. BATTERY ASSY P/N: 2013-1A WAS REPLACED AND DOCUMENTED ON SHARP TECHNICS K W.O. MNT004216 / NR-0013. OPERATIONAL CHECK SATISFACTORY.
- [SDR KCSA2025113067](https://openairdocs.org/sdr/KCSA2025113067.md): Thrust Reverser · delaminated · Nov 30, 2025 · N715CK · Boeing 7474B5F · Engine Thrust Reverser
  > THRUST REVERSER INBD NR 4 ENG DELAMINATED AT 10 O'CLOCK POSITION. REMOVED AND REPLACED NR 4 INBD THRUST REVERSER IAW AMM 78-31-01.100278273: INBD THRUST REVERSER NR 4 ENG CASCADE VANE DEPARTED AIRCRAFT AT 10 O'CLOCK POSITION. REMOVED AND REPLACED UPPER NON-L
- [SDR KCSA2025111865](https://openairdocs.org/sdr/KCSA2025111865.md): Pump · faulted · Nov 18, 2025 · N708CK · Boeing 7474B5 · Hydraulic Pump (Electric/Engine), Main
  > 100280839: HYD QTY LOW 1 DEMAND PUMP AND ENGINE PUMP BOTH OFF BEFORE SYS FLUID 0. ACTION TAKEN: REMOVED AND REPLACED #1 EDP HYD 1. IAW B747-400 AMM 29-11-05-004 AND 29-11-05-904. ALL CHECKS GOOD. NO LEAKS NOTED. DRY MOTOR PERFORMED. NO DEFECTS NOTED.
- [SDR U2RA2025060200015](https://openairdocs.org/sdr/U2RA2025060200015.md): Smoke Detector · faulted · May 31, 2025 · N702CA · Boeing 747412 · Smoke Detection
  > FIRE MAIN DECK AFT EICAS MESSAGE DISPLAYED AT THE GATE - REPLACED MULTIPLE MAIN DECK CARGO COMPARTMENT AFT SMOKE DETECTORS.
- [SDR UIEA2025042400570](https://openairdocs.org/sdr/UIEA2025042400570.md): Engine · failed · Apr 24, 2025 · N249BA · Boeing 747409 · Engine (Turbine/Turboprop)
  > ENGINE 2 FAILURE IN FLIGHT AT FLIGHT LEVEL 340.(<P>#2 ENGINE UNSCHEDULED ENGINE REMOVAL AND REPLACEMENT SN: P717652CN IAW AMM 71-00-02. NO FURTHER DEFECTS NOTED.</P>)
- [SDR KCSA202504070112](https://openairdocs.org/sdr/KCSA202504070112.md): Engine · damaged · Apr 1, 2025 · N705CK · Boeing 7474B5F · Engine (Turbine/Turboprop)
  > ENGINE #2 SEVERE DAMAGE. PERFORMED N1 AND N2 LOCKOUT PER AMM 71-00-30 AND E50 #13891 FOR 3 ENGINE FERRY FLIGHT. ENGINE #2 SEVERE DAMAGE. REMOVED AND REPLACED #2 ENGINE IAW B747-400 AMM 71-00-00, REFERENCE TASK CARD NUMBER 71-002-00-00 ITEM 1 MET 7050420706 F
- [SDR U2RA2024120600067](https://openairdocs.org/sdr/U2RA2024120600067.md): Bracket · broken · Nov 28, 2024 · N756CA · Boeing 747412 · Auxiliary Power Unit (APU) Doors
  > DURING SCHEDULED A-CHECK AT HAECO (NE1Y345K), DURING INSPECTION & SERVICING OF THE APU, THE APU DOOR FIRE SENSOR FORWARD MOUNDING BRACKET WAS FOUND BROKE; REFERENCE HAECO NON-ROUTINE WO.4103802. A REPAIR WAS EMBODIED UNDER FVCI EO 24212-1 REV B.
- [SDR U2RA2024110400063](https://openairdocs.org/sdr/U2RA2024110400063.md): Seal · damaged · Oct 29, 2024 · N729CA · Boeing 747412 · Engine (Turbine/Turboprop)
  > "DURING A-CHECK INSPECTION, IT WAS DISCOVERED THAT THE AFT SEAL, LOCATED ON THE OUTBOARD ENGINE CORE COWL OF ENGINE 1 HAD A MISSING PORTION NEAR THE LOWER CORNER. A REPAIR WAS EMBODIED AND CLASSIFIED AS ""MAJOR"" VIA FVCI EO 24193-1. REF NAL M-8A 63130-12."
- [SDR U2RA2024110400064](https://openairdocs.org/sdr/U2RA2024110400064.md): Skin · gouged · Oct 29, 2024 · N729CA · Boeing 747412 · Nacelle/Pylon, Plate/Skin
  > "DURING A-CHECK INSPECTION, IT WAS DISCOVERED THAT THE SKIN, LOCATED ON THE OUTBOARD ENGINE CORE COWL OF ENGINE 2 HAD A DEEP GOUGE NEAR THE OIL ACCESS PANEL. A REPAIR WAS EMBODIED AND CLASSIFIED AS ""MAJOR"" VIA FVCI EO 24193-2. REF NAL M-8A 63130-44."
- [SDR U2RA2024110400065](https://openairdocs.org/sdr/U2RA2024110400065.md): Skin · damaged · Oct 29, 2024 · N729CA · Boeing 747412 · Nacelle/Pylon, Plate/Skin
  > "DURING A-CHECK INSPECTION, IT WAS DISCOVERED THAT THE SKIN, LOCATED ON THE OUTBOARD ENGINE CORE COWL OF ENGINE 3 HAD A A MISSING PIECE OF OUTER LAYER MATERIAL NEAR THE LOWER-FORWARD CORNER. A REPAIR WAS EMBODIED AND CLASSIFIED AS ""MAJOR"" VIA FVCI EO 24193-3
- [SDR U2RA2024090800052](https://openairdocs.org/sdr/U2RA2024090800052.md): Battery Pack · discharged · Aug 28, 2024 · N756CA · Boeing 747412 · Emergency Lighting
  > REF HAECO XMN (TX9Y778Y) NRC#:KUL9753 - FOUND THAT THE UPPER DECK DOOR AREA R/H SIDE M5606 EMERGENCY POWER SUPPLY BATTERY LOW CAPACTIY
- [SDR U2RA2024090800051](https://openairdocs.org/sdr/U2RA2024090800051.md): Door Frame · out of limits · Aug 25, 2024 · N756CA · Boeing 747412 · Fuselage Main, Structure
  > "REF HAECO XMN (TX9Y778Y) NRC#:KUL9555 - AN EXISTING OVERSIZED HOLE WAS FOUND ON FRAME STRUCTURE AT STA 2231, STR-25L DURING SB 747-53A2450 REV. 08 INSPECTION. THE DIAMETER (0.309"") IS GREATER THAN SB 747-53A2450 REV. 08 ALLOWED (MAX 0.2817"")."
- [SDR U2RA2024090800044](https://openairdocs.org/sdr/U2RA2024090800044.md): Web · scratched · Aug 21, 2024 · N756CA · Boeing 747412 · Fuselage Miscellaneous Structure
  > REF HAECO XMN (TX9Y778Y) NRC#: KUL9399 - FWD CARGO COMPARTMENT, STA 660-680 RBL 33-55, MULTIPLE SCRATCHES ON EXISTING REPAIR DOUBLER UPPER SURFACE OF LATERAL BEAM WEB.
- [SDR U2RA2024090800053](https://openairdocs.org/sdr/U2RA2024090800053.md): Battery · discharged · Aug 14, 2024 · N756CA · Boeing 747412 · Emergency Equipment
  > REF HAECO XMN (TX9Y778Y) NRC#:KUL8961 - FOUND THAT THE R/H UPPER DECK DOOR BATTERY M7038 IS AT LOW CAPACTIY.
- [SDR U2RA2024090800046](https://openairdocs.org/sdr/U2RA2024090800046.md): Channel · cracked · Aug 11, 2024 · N756CA · Boeing 747412 · Vertical Stabilizer
  > REF HAECO XMN (TX9Y778Y) NRC#: KUL8334, KUL8342 & KUL8375 - (2 EA.) P/N G12447-3-3-1882-3 AND (1 EA.) G12447-3-3-1882-4 GANG CHANNELS CRACKED COMMON TO THE VERTICAL STABILIZER AUXILIARY SPAR
- [SDR U2RA2024090800043](https://openairdocs.org/sdr/U2RA2024090800043.md): Rub Strip · worn · Aug 8, 2024 · N756CA · Boeing 747412 · Spoilers
  > REF HAECO XMN (TX9Y778Y) NRC#: KUL7419 THE INBOARD FIBERGLASS RUB STRIP OF RHW NO.12 SPOILER FOUND DAMAGED (BROKEN FIBERS). IN ADDITIONAL, WATER CONTAMINATION UPPER SKIN WAS FOUND DURING X-RAY INSPECTION.
- [SDR U2RA2024090800045](https://openairdocs.org/sdr/U2RA2024090800045.md): Web · dented · Aug 8, 2024 · N756CA · Boeing 747412 · Fuselage Miscellaneous Structure
  > REF HAECO XMN (TX9Y778Y) NRC#: KUL6304, KUL6288 & KUL6296 TOTAL 5 EA DENTS WERE FOUND ON UPPER SURFACE OF THE AFT CGO LHS LATERAL BEAM WEB (P/N: 65B06295-7), RHS LATERAL BEAM WEB (P/N: 65B06295-8), RHS LATERAL BEAM WEB (P/N: 65B06295-9), FROM STA 1660 TO 1680,
- [SDR U2RA2024090800050](https://openairdocs.org/sdr/U2RA2024090800050.md): Skin · dented · Aug 8, 2024 · N756CA · Boeing 747412 · Fuselage Main, Plate/Skin
  > REF HAECO XMN (TX9Y778Y) NRC#:KUL6825 - EXISTING DENT AND BLEND-OUT WERE FOUND ON FUSELAGE SKIN AT STA 500, STR-38R-STR-39R. DEVIATIONS OCCUR WHEN PERFORM THE B747-400SF SRM 53-00-01/REPAIR 12 REPAIR.
- [SDR U2RA2024090800041](https://openairdocs.org/sdr/U2RA2024090800041.md): Web · dented · Aug 7, 2024 · N756CA · Boeing 747412 · Fuselage Internal Mounting Structure
  > REF HAECO XMN (TX9Y778Y) NRC#: KUL5603 & KUL5561 - FWD CARGO COMPARTMENT STA 660-680 LATERAL BEAM WEB UPPER SURFACE FOUND WITH 8EA DENTS BETWEEN LBL 40.00 TO RBL 45.50.
- [SDR U2RA2024090800048](https://openairdocs.org/sdr/U2RA2024090800048.md): Skin · corroded · Aug 6, 2024 · N756CA · Boeing 747412 · Wing, Plate/Skin
  > REF HAECO XMN (TX9Y778Y) NRC#: KUL3384 CORROSION WAS FOUND ON RHW LOWER NO.4 SKIN PANEL NEAR WSTA 614.5.
- [SDR U2RA2024090800049](https://openairdocs.org/sdr/U2RA2024090800049.md): Fitting · cracked · Aug 6, 2024 · N756CA · Boeing 747412 · Fuselage Main, Longeron/Stringer
  > REF HAECO XMN (TX9Y778Y) NRC#:KUL3186 (CRACK IN RH LONGERON FITTING FLANGE) A CRACK (0.40 INCH LONG) WAS FOUND IN THE RH LONGERON EXTENSION FITTING (P/N: 65B15034-6) FLANGE DURING INSPECTION PER SB 747-53A2860 R03 AT STA 1480; REF NRC# KUL7534, KUL7542, KUL755
- [SDR U2RA2024090800042](https://openairdocs.org/sdr/U2RA2024090800042.md): Skin · dented · Aug 5, 2024 · N756CA · Boeing 747412 · Landing Gear Doors
  > REF HAECO XMN (TX9Y778Y) NRC#: KUL1552 - (3 EA.) DENTS AND AN EXISTING REPAIR WERE FOUND ON THE INNER SKIN OF THE LH WING INBOARD LANDING GEAR STRUT DOOR. THE DAMAGE WAS EVALUATED PER 747-400SF 52-80-01 REPAIR 3, AND IS BEYOND SRM REPAIR LIMITS DUE TO PROXIMI
- [SDR U2RA2024090800047](https://openairdocs.org/sdr/U2RA2024090800047.md): Skin · contaminated · Aug 5, 2024 · N756CA · Boeing 747412 · Landing Gear Doors
  > REF HAECO XMN (TX9Y778Y) NRC#: KUL1503 - WATER CONTAMINATION AND AN EXISTING REPAIR WERE FOUND IN THE FORWARD EDGE OF THE RH WING INBOARD LANDING GEAR STRUT DOOR.
- [SDR UIEA2024071600680](https://openairdocs.org/sdr/UIEA2024071600680.md): Acoustic Panel · damaged · Jul 16, 2024 · N471MC · Boeing 747412 · Engine (Turbine/Turboprop)
  > ENG 3 ACOUSTIC PANEL 7 O'CLOCK POSITION DAMAGED & LINEAR SEGMENT MISSING(<P>C/W TEMP REPAIR IAW AMM 72-34-01-206-012-N00 & C/W EA-1978A111, ISSUED NON-MEL DMI 212851 DUE 17JUL2024 & REINSPECTS UNTIL PERM REPAIR IS C/W. </P>)
- [SDR U2RA2023101400045](https://openairdocs.org/sdr/U2RA2023101400045.md): Liner · missing · Oct 9, 2023 · N702CA · Boeing 747412 · Turbine Engine Air Inlet Section
  > DURING A SCHEDULED A-CHECK VISIT, DAMAGE WAS FOUND TO THE #4 ENGINE OUTBOARD THRUST REVERSER. FURTHER INSPECTION REVEALED THE #4 OUTER FAN EXIT LINER SEGMENT HAD DETACHED FROM THE FAN CASE RING AND DEPARTED THE AIRCRAFT. SUBSEQUENT C-DUCT DAMAGE WAS REPAIRED A
- [SDR U2RA2023082600042](https://openairdocs.org/sdr/U2RA2023082600042.md): Charger · inoperative · Aug 22, 2023 · N756CA · Boeing 747412 · Emergency Lighting
  > DURING SCHEDULED MAINTENANCE, AN OPERATIONAL CHECK OF THE EMERGENCY LIGHTS SYSTEM WAS PERFORMED WITH A FAILURE TO TEST ON LIGHTS L1854, L1853, AND L5735. FOUND BATTERY POWER SUPPLY (CHARGER) WAS PROVIDING NO OUTPUT, PART REPLACED PER AIRCRAFT MAINTENANCE MANUA
- [SDR U2RA2023082600043](https://openairdocs.org/sdr/U2RA2023082600043.md): Unknown · unknown · Aug 22, 2023 · N756CA · Boeing 747412 · Aircraft Fuel System
  > DURING INSPECTION, EVIDENCE OF FUEL LEAKAGE WAS DISCOVERED AT TANK NO. 3 RIGHT HAND WING REAR SPAR TO RIGHT HAND WHEEL WELL JUNCTURE, LIFTED/LOOSE SEALANT DISCOVERED. TANK SMALL AREA RESEAL REPAIR WAS ACCOMPLISHED IN DISCREPANT AREA PER AIRCRAFT MAINTENANCE MA
- [SDR U2RA2023082500041](https://openairdocs.org/sdr/U2RA2023082500041.md): Battery · inoperative · Aug 21, 2023 · N702CA · Boeing 747412F · Emergency Exits
  > UPPER DECK LEFT EMERGENCY EXIT DOOR ASSIST BOTTLE BATTERY WILL NOT TEST - REMOVED AND REPLACED BATTERY PER AIRCRAFT MAINTENANCE MANUAL 52-23-14.
- [SDR U2RA2023061600025](https://openairdocs.org/sdr/U2RA2023061600025.md): Unknown · unknown · Jun 13, 2023 · N729CA · Boeing 747412 · Emergency Lighting
  > UPPER DECK EMERGENCY LIGHT AFT OF RIGHT DOOR INOPERATIVE - DEFERRED PER MINIMUM EQUIPMENT LIST 33-51-01-01.
- [SDR U2RA2023052700023](https://openairdocs.org/sdr/U2RA2023052700023.md): Bulb · inoperative · May 27, 2023 · N729CA · Boeing 747412 · Emergency Lighting
  > DURING SCHEDULED A-CHECK MAINTENANCE, OPERATIONAL CHECK OF THE EMERGENCY EXIT LIGHT SYSTEM RESULTED IN FINDING OF INOPERATIVE LIGHT BULB. LIGHT BULB REPLACED IAW AMM 33-51-07 REV. 107, SATIS
- [SDR U2RA2023052700024](https://openairdocs.org/sdr/U2RA2023052700024.md): Cartridge · burned · May 27, 2023 · N729CA · Boeing 747412 · Doors
  > DURING REINSTALLATION OF LEFT UPPER DOOR SLIDE PACK TO FACILITATE OTHER SCHEDULED MAINTENANCE, A CHECK OF THE EMERGENCY POWER RESERVOIR, PER AMM 52-23-13-406-045, FAILED (BATTERY OK GREEN LIGHT DID NOT ILLUMINATE). TROUBLESHOOTING FOUND BURN MARKS ON CIRCUIT B
- [SDR UIEA2022081200854](https://openairdocs.org/sdr/UIEA2022081200854.md): Duct · bulged · Aug 30, 2022 · N471MC · Boeing 747412 · Engine Thrust Reverser
  > NO.2 ENG - RH C-DUCT INNER SURFACE BULGED & DELAMINATION REPLACEMENT
- [SDR UIEA2022053100560](https://openairdocs.org/sdr/UIEA2022053100560.md): Transmitter · flamed out · May 27, 2022 · N489MC · Boeing 747412F · Compressor Bleed Governor
  > BTB, ENG 2 TAIL PIPE FIRE OBSERVED BY GROUND OPS. ALL INSPECTIONS C/W TO INCLUDE BSI. VSV AND FUEL FLOW TRANSMITTER REPLACED. T/T HALF TIME LIMIT REPAIR ACCOMPLISHED. MAX POWER ASSURANCE RUNS ACCOMPLISHED.</P>)
- [SDR UIEA2022022000149](https://openairdocs.org/sdr/UIEA2022022000149.md): Eec · failed · Feb 20, 2022 · N489MC · Boeing 747412F · Engine (Turbine/Turboprop)
  > ENGINE #2 FAILED SHORTLY AFTER TAKEOFF (CONVERSATION WITH CAPTAIN INDICATED IFSD ON TAKEOFF AT APPROXIMATELY 1000 AGL. CREW FOLLOWED THE QRH. CREW LEVELED OUT AIRCRAFT AT 3000 FT. CREW INITIATED AN ENGINE START ON #2, WHICH WAS SUCCESSFUL. CREW CONTACTED THE D
- [SDR U2RA2021082300050](https://openairdocs.org/sdr/U2RA2021082300050.md): Duct · damaged · Aug 18, 2021 · N729CA · Boeing 747412 · Engine Thrust Reverser
  > REF. HAITEC W/O H1-21-06-00016/16444, NRC #0022, AND FVCI EO #21149-1: DAMAGE DISCOVERED ON THE #4 ENGINE INBOARD THRUST REVERSER INNER DUCT, OUTER ACOUSTIC PANEL AT THE 7 O’CLOCK POSITION. ACCOMPLISHED INTERIM REPAIR (EPOXY RESIN INJECTION) TO DAMAGED AREA
- [SDR KCSA2021032208](https://openairdocs.org/sdr/KCSA2021032208.md): Eec · malfunctioned · Mar 22, 2021 · N713CK · Boeing 7474B5F · Fuel Controlling System
  > IN CRUISE #2 ENGINE ENGINE PRESSURE RATIO, N1, N2 & FUEL FLOW FLUCTUATIONS. REMOVE AND REPLACE #2 ENGINE ELECTRONIC ENGINE CONTROL IAW B747-400 AMM 73-21-04. OPERATIONS CHECK GOOD.
- [SDR UIEA2021011100028](https://openairdocs.org/sdr/UIEA2021011100028.md): Engine · odor · Jan 6, 2021 · N1619A · Boeing 7673Y0 · Engine (Turbine/Turboprop)
  > ON CLIMBOUT & DESCENT WE OBSERVED A VERY STRONG FUME ODOR (DIRTY SOCK SMELL). CARRIED OUT CHAPTER 5 CONDITIONAL INSPECTION FOR FUMES IN THE CABIN, PER AMM 05-51-56. FUMES SMELL DETERMINED TO BE COMING FROM RT ENGINE. REMOVED AND REPLACED NR 2 ENGINE ASSEMBL
- [SDR UIEA2020102602310](https://openairdocs.org/sdr/UIEA2020102602310.md): Unknown · odor · Oct 26, 2020 · N471MC · Boeing 747412 · Air Distribution System
  > SMELL OF ENGINE OIL DURING ENGINE START TAXI, CLIMB, AND DESCENT. CONDUCTED INSPECTION OF OIL/LEAKS ON ALL 4 ENGINES. RAN ALL 4 ENGINES INDIVIDUALLY WITH ALL 3 PACKS ON, NO ODORS OBSERVED IN F/D, CREW REST, GALLEY OR MAIN DECK NOTED DURING ENGINE RUN, IAW AM
- [SDR U2RA202009200012](https://openairdocs.org/sdr/U2RA202009200012.md): Skin · delaminated · Aug 15, 2020 · N756CA · Boeing 747412 · Engine Thrust Reverser
  > WHILE ACCOMPLISHING TASK CARD 71-830-01-02 FOUND NR 2 ENGINE INBOARD T/R EXTERNAL AND LOWER SURFACE HAVE DELAMINATION ABOUT 3". REPAIRED PER VT-SAA EA 747-5430-56-A8486 REV A.
- [SDR U2RA202009190005](https://openairdocs.org/sdr/U2RA202009190005.md): Stop Fitting · gouged · Aug 5, 2020 · N756CA · Boeing 747412 · Engine Thrust Reverser
  > WHILE ACCOMPLISHING A VISUAL INSPECTION, FOUND NR 1 ENGINE OUTBOARD T/R INTERIOR SIDE UPPER STOP FITTING HAS GOUGES. REPAIRED PER VT-SAA EA 747-5400-56-A8502 REV A.
- [SDR U2RA202009190006](https://openairdocs.org/sdr/U2RA202009190006.md): Stop Fitting · gouged · Aug 5, 2020 · N756CA · Boeing 747412 · Engine Thrust Reverser
  > WHILE ACCOMPLISHING A VISUAL INSPECTION FOUND NR 3 ENGINE OUTBOARD T/R INTERIOR SIDE UPPER, FWD STOP FITTING IS GOUGED AND HAS DAMAGED HI-LOCK FASTENER. REPAIRED PER VT-SAA EA 747-5400-56-A8511 REV A.
- [SDR U2RA202009190003](https://openairdocs.org/sdr/U2RA202009190003.md): Skin · dented · Jul 28, 2020 · N756CA · Boeing 747412 · Nacelle/Pylon, Plate/Skin
  > WHILE ACCOMPLISHING TASK CARD 71-211-04-02 FOUND NR 2 ENGINE OUTBOARD CORE COWL INTERIOR AFT RIB LOWER SIDE HAS A DENT. REPAIRED PER VT-SAA EA 747-5440-56-A8477 REV A.
- [SDR UIEA2020021700260](https://openairdocs.org/sdr/UIEA2020021700260.md): Feeder Cable · chafed · Feb 16, 2020 · N780BA · Boeing 747409 · Turbine Engine System Wiring
  > FOUND #4 ENG FEEDER CABLE (W282-143-110) CHAFING.(<P>IAW SWPM 20-10-11, 20-10-12, 20-30-13, 20-30-11 REV. 72 AND WDM 24-21-41 REV. 22, REPLACED ENG FEEDER CABLE. IAW AMM 24-11-00-705-001-001 REV. 97, PERFORMED GENERATOR DRIVE SYSTEM OPERATIONAL TEST AND THE RE
- [SDR UIEA2019110105829](https://openairdocs.org/sdr/UIEA2019110105829.md): Splice Plate · corroded · Nov 2, 2019 · N747BC · Boeing 7474J6 · Wing Miscellaneous Structure
  > CORROSION - PLATE, L/H WING L/E TO FRONT SPAR CAVITY AT OLES 1545.50.(<P>REMOVED DAMAGED PART IAW SRM 51-40-02 REV. 43. FABRICATED NEW PART IAW EI NO T2019P57M-4063 REV. 0. INSTALLED NEW FABRICATED PART IAW SRM 51-40-02 REV. 43 AND DWG 65B11862 SH2 REV F. JOB
- [SDR UIEA2018121002813](https://openairdocs.org/sdr/UIEA2018121002813.md): Compressor · stalled · Dec 8, 2018 · N249BA · Boeing 747409 · Turbine Engine Compressor Section
  > NR 3 ENGINE COMPRESSOR STALLED 2X AFTER TAKE OFF+ WOULD TEMP OUT AT NORMAL THRUST SETTING. AT IDLE WOULD RUN IN NORMAL PARAMETERS. R&R ENG NR 3.
- [SDR DALA2017061204677](https://openairdocs.org/sdr/DALA2017061204677.md): Engine · failed · Jun 9, 2017 · N668US · Boeing 747451 · Engine (Turbine/Turboprop)
  > AIR TURNBACK DURING FLIGHT, THE NUMBER 1 ENGINE STALLED WITH EGT RISE, ENGINE WAS SHUTDOWN. AIRCRAFT RETURNED SAFELY TO DEPARTURE. MAINTENANCE FOUND METAL IN THE TAIL PIPE. MAINTENANCE REPLACED NR 1 ENGINE IAW AMM 71-11. ENGINE RUN AND LEAK CHECKED OK, AIRCR

Next page: https://openairdocs.org/engine/pratt-whitney-pw4056/reports.md?page=2

## The whole list in SQL

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

```sql
SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy
FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet'
WHERE engine_model_key = 'PW4056'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/engine/pratt-whitney-pw4056/reports

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