# Pratt & Whitney PW4077

- Type: Engine model (FAA registry)
- Registry code: 51532
- Manufacturer (registry): P & W
- Model: PW4077
- Engine type: Turbo-fan
- Power: 79,960 lb thrust
- Data sheet: [TCDS E46NE](https://openairdocs.org/tcds/E46NE) (OpenAirDocs)
- Holder: Pratt & Whitney RTX Corporation (formerly United Technologies Corporation)
- Installed in: 0 registered aircraft
- Page: https://openairdocs.org/engine/pratt-whitney-pw4077

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 2026-09-02](https://openairdocs.org/ad/2026-09-02): Turbine Engine Compressor Section · Pratt & Whitney RTX PW4074, PW4074D, PW4077 and 4 more. Effective Jun 26, 2026
- [AD 2023-22-02](https://openairdocs.org/ad/2023-22-02): Turbine Engine Combustion Section · Pratt & Whitney Division PW4074, PW4074D, PW4077 and 4 more. Effective Dec 26, 2023
- [AD 2023-19-02](https://openairdocs.org/ad/2023-19-02): Turbine Engine Compressor Section · Pratt & Whitney Division PW4074, PW4074D, PW4077 and 4 more. Effective Nov 7, 2023
- [AD 2022-07-13](https://openairdocs.org/ad/2022-07-13): Engine Oil Cooler · Pratt & Whitney Division PW4074, PW4074D, PW4077 and 4 more. Effective May 2, 2022
- [AD 2022-06-09](https://openairdocs.org/ad/2022-06-09): Turbine Engine Compressor Section · Pratt & Whitney Division PW4074, PW4074D, PW4077 and 4 more. Effective Apr 15, 2022
- [AD 2017-05-05](https://openairdocs.org/ad/2017-05-05): Failure of the HPT 1st stage hub · Pratt & Whitney Division PW4074, PW4074D, PW4077 and 4 more. Effective Apr 13, 2017
- [AD 2014-23-01](https://openairdocs.org/ad/2014-23-01): Second-stage HPT air seal · Pratt & Whitney Division PW4074, PW4074D, PW4077 and 4 more. Effective Dec 26, 2014
- [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 2012-13-02](https://openairdocs.org/ad/2012-13-02): HPC disks · Pratt & Whitney Division PW4074 and PW4077. Effective Aug 23, 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 2006-22-13](https://openairdocs.org/ad/2006-22-13): Anti-rotation slots · Pratt & Whitney Division PW4074, PW4074D, PW4077 and 5 more. Effective Dec 7, 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 2003-26-09](https://openairdocs.org/ad/2003-26-09): Engine High Pressure Turbine (HPT) Assembly Hardware · Pratt & Whitney Division PW4074, PW4074D, PW4077 and 7 more. Effective Dec 3, 2003
- [AD 2003-13-11](https://openairdocs.org/ad/2003-13-11): High Pressure Compressor (HPC) Rear Case J Flange · Pratt & Whitney Division PW4074, PW4074D, PW4077 and 3 more. Effective Jul 15, 2003
- [AD 2001-20-02](https://openairdocs.org/ad/2001-20-02): 2nd Stage High Pressure Turbine Air Seal Assembly · Pratt & Whitney Division PW4074, PW4074D, PW4077 and 7 more. Effective Nov 5, 2001

Historical (superseded or no longer in force):

- [AD 2021-05-51](https://openairdocs.org/ad/2021-05-51) (historical): Turbine Engine Compressor Section · Pratt & Whitney Division PW4074, PW4074D, PW4077 and 4 more. Effective Mar 24, 2021
- [AD 2019-03-01](https://openairdocs.org/ad/2019-03-01) (historical): Turbine Engine Compressor Section · Pratt & Whitney Division PW4074, PW4074D, PW4077 and 4 more. Effective Mar 22, 2019
- [AD 2018-02-10](https://openairdocs.org/ad/2018-02-10) (historical): Turbine Engine Combustion Section · Pratt & Whitney Division PW4074, PW4074D, PW4077 and 4 more. Effective Feb 26, 2018
- [AD 2013-15-09](https://openairdocs.org/ad/2013-15-09) (historical): HPT air seals · Pratt & Whitney Division PW4074, PW4074D, PW4077 and 4 more. Effective Sep 17, 2013
- [AD 2011-14-07](https://openairdocs.org/ad/2011-14-07) (historical): HPC disks · Pratt & Whitney Division PW4074 and PW4077. Effective Sep 8, 2011
- [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 2003-22-09](https://openairdocs.org/ad/2003-22-09) (historical): Turbine exhaust case (TEC) · Pratt & Whitney Division PW4074, PW4074D, PW4077 and 7 more. Effective Dec 3, 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 2000-12-02](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

## Information bulletins (advisory) (3)

- [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-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 (3,168, newest 50)

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

- [SDR CALA2026102320536](https://openairdocs.org/sdr/CALA2026102320536), Oct 20, 2026: SKIN. CRACKED. DAMAGE FOUND ON FWD CARGO DOOR FWD LOWER EDGE. SEAL RETAINER IS BENT BUT NOT CRACKED. BLADE SEAL INTACT. FOUND 1 PULLED RIVET UPON INSPECTION REF AVO18626, PERF
- [SDR CALA2026102220517](https://openairdocs.org/sdr/CALA2026102220517), Oct 16, 2026: ENGINE. MALFUNCTIONED. RIGHT ENGINE FAILED, EGT EXCEEDED IAW PILOT REPORT. AT APPROX 6,000 FT ABOVE AIRFIELD, NR 2 ENGINE EXPERIENCED HIGH EGT SPIKE, REPORTEDLY REACHING 845 DEGREE CE
- [SDR CALA2026101220259](https://openairdocs.org/sdr/CALA2026101220259), Oct 9, 2026: OVEN. CONTAMINATED. BURNING PLASTIC ODOR IN AFT GALLEY. DE-POWERED GALLEY AND WENT AWAY. INSPECTED AND OPS CHECKED AFT GALLEY IAW AMM 05-51-58-800-801-C3. FOUND PLASTIC WRAPPER BLO
- [SDR CALA2026100620134](https://openairdocs.org/sdr/CALA2026100620134), Oct 3, 2026: UNKNOWN. ODOR. SMOKE ODOR CONDITIONAL INSP REQUIRED PER AMM 05-51-XX DUE TO AN INCIDENT REPORTED BY THE CREW.SLIGHT ELEC ODOR NOTICED BY THE FLIGHT ATTENDANTS BY MID GALLEY AT
- [SDR CALA2026100720204](https://openairdocs.org/sdr/CALA2026100720204), Oct 3, 2026: LIGHT. DETACHED. EMERGENCY PATH LIGHT NEA R SEAT 24D IS LOOSE AND HANGING. SECURED LOOSE EMERGENCY LIGHT AT. 24D WITH TAPE. APPLIED MEL REPLACED EPL HOUSING, IAW CMM 25-21-56. O
- [SDR CALA2026092819902](https://openairdocs.org/sdr/CALA2026092819902), Sep 26, 2026: BATTERY PACK. NO TEST. POWER SUPPLY, BATTERY PACK CAPACITY CHECK PROCEDURE. ALL LIGHTS ASSOCIATED WITH POWER SUPPLY M33094 EXTINGUISH AFTER APPROXIMATELY 3 MINUTES. REPLACED THE BATTE
- [SDR CALA2026092819906](https://openairdocs.org/sdr/CALA2026092819906), Sep 26, 2026: BATTERY PACK. NO TEST. POWER SUPPLY BATTERY PACK CAPACITY CHECK PROCEDURE. ALL LIGHTS ASSOCIATED WITH POWER SUPPLY M33098 EXTINGUISH WITHIN 5 MINUTES OF OPERATION. REPLACED THE BATTER
- [SDR CALA2026092819908](https://openairdocs.org/sdr/CALA2026092819908), Sep 26, 2026: BATTERY PACK. NO TEST. POWER SUPPLY BATTERY PACK CAPACITY CHECK PROCEDURE. ALL LIGHTS ASSOCIATED WITH EMERGENCY POWER PACK M33405 ARE INOPERATIVE. REPLACED BATTERY PACK AT POWER SUPPL
- [SDR CALA2026092819910](https://openairdocs.org/sdr/CALA2026092819910), Sep 26, 2026: LAMP. NO TEST. POWER SUPPLY - BATTERY PACK CAPACITY CHECK PROCEDURE. 2R DOOR EMERGENCY AREA LIGHT INOPERATIVE. RELAMPED IAW AMM 33-51-03-960-801.
- [SDR CALA2026092219635](https://openairdocs.org/sdr/CALA2026092219635), Sep 20, 2026: LIGHT. MALFUNCTIONED. EMERGENCY AREA LIGHT DOES NOT TURN OFF. EMERGENCY LIGHTING WILL NOT TURN OFF IN MAIN CABIN UPON ARRIVAL EMERGENCY LIGHTS WERE OFF INSIDE THE CABIN. PERFORMED EM
- [SDR CALA2026092219677](https://openairdocs.org/sdr/CALA2026092219677), Sep 20, 2026: LAMP. FAULTY. EMERGENCY LIGHTS OP TEST WITH THE TEST SWITCHES PROCEDURE, L4 DOOR SLIDE LIGHT INOPERATIVE. REPLACED THE LAMPS IAW AMM 33-51-04-960-801. CHKD OK.
- [SDR CALA2026092319726](https://openairdocs.org/sdr/CALA2026092319726), Sep 20, 2026: POWER SUPPLY. NO TEST. DURING EMERGENCY LIGHTS, OPS TEST WITH THE TEST SWITCHES, ALL EMERGENCY LIGHTS SUPPLIED BY POWER SUPPLY M33404 FAILED AFTER APPROXIMATELY 2 MINUTES OF OPS. SUSP
- [SDR CALA2026092219684](https://openairdocs.org/sdr/CALA2026092219684), Sep 19, 2026: ANTI-SKID VALVE. FAULTED. ANTI-SKID NORM VLV R EICAS STATUS ONE ANTISKID NORMAL VALVE FAULT ON THE RIGHT MAIN LANDING GEAR.DB BRAKE SYSTEM CONTROL UNIT (PRIMARY CHAN) DB BRAKE SYSTEM CON
- [SDR CALA2026090419242](https://openairdocs.org/sdr/CALA2026090419242), Sep 4, 2026: LAMP. INOPERATIVE. EMERGENCY LIGHTS - OPERATIONAL TEST WITH THE TEST SWITCHES PROCEDURE - EMERGENCY AISLE ILLUMINATION LIGHT AT SEAT 47 LKJ INOP RELAMPED EMERGENCY AISLE ILLUMINAT
- [SDR CALA2025092409189](https://openairdocs.org/sdr/CALA2025092409189), Sep 21, 2025: ENGINE. SMOKE. ON TAKE OFF AND CLIMB, ACFT REPORTED BLACK SMOKE FROM RT ENG. ALL INDICATIONS NORMAL. CREW REPORTED THAT ALL ENGINE PARAMETERS OIL QTY, PRESSURE & TEMPS NORMAL,
- [SDR CALA2025071106476](https://openairdocs.org/sdr/CALA2025071106476), Jul 9, 2025: ENGINE. DAMAGED. ENG 1 EGT EXCEEDANCE ON TAKEOFF, AHM SHOWS MAX TEMP 636, TOTAL TIME OVER LIMIT 74 SEC OF EXCEEDANCE INFORMATION REF LP 5499926 ENGINE 1 SN 7 HPT 1ST -STAGE BLAD
- [SDR CALA2025070406221](https://openairdocs.org/sdr/CALA2025070406221), Jul 1, 2025: WARNING MESSAGE. FALSE ACTIVATION. CREW REPORTS RT ENG EGT EXCEEDED DURI NG CLIMB. AHM SHOW ENG R EGT RED MM MSG 77-62122, AHM DID NOT TR IGGER EGT EXCEEDANCE REPORT FOR RT ENG IAW AMM 31-61-00-8
- [SDR CALA2025070406222](https://openairdocs.org/sdr/CALA2025070406222), Jul 1, 2025: HEATER. MALFUNCTIONED. CREW REPORTS LT ENG EGT EXCEEDED DURI NG CLIMB. AHM SHOW ENG L EGT RED MM MSG 77-62121, EGT PEAK 626.5 DEG "TOL" TIME OVER LIMIT 05SEC. REF AMM 31-61-00-800-804
- [SDR CALA2025022402459](https://openairdocs.org/sdr/CALA2025022402459), Feb 24, 2025: OIL SYSTEM. LEAKING. EXTERIOR - UPON WALKAROUND INSPECTION FOUND #1 ENGINE OIL LEAKING FROM SPINNER CONE SECTION. NO LEAKS OR DRIPS FOUND IN THE ENGINE INLET AFTER ENGINE RUN IAW AM
- [SDR CALA2024123001691](https://openairdocs.org/sdr/CALA2024123001691), Dec 26, 2024: ANTI-ICE VALVE. FAULTED. ICING ENG EICAS CAUTION PRIMARY ICE DETECTION SYSTEM (LEFT OR RIGHT ICE DETECTORS) DETEC TS ICE, AND LEFT AND/OR RIGHT ENGINE ANTI-ICING SWITCH IS OFF. CAUTION 
- [SDR CALA2024112001198](https://openairdocs.org/sdr/CALA2024112001198), Nov 19, 2024: ENGINE. FAILED. RT ENG FAILURE AFTER INITIAL ST ON GROUND ENG IDLE OK 1+MIN. AUTO STARTED RIGHT ENGINE 3 TIMES AND RAN EACH TIME FOR5-10 MINUITS. ALSO ACCOMPLISHE A HIGH POWER 
- [SDR CALA2024111501151](https://openairdocs.org/sdr/CALA2024111501151), Nov 11, 2024: ENGINE. FAILED. ON TAKE OFF ATC NOTIFIED US BLACK SMOKE COMING OU T ON LEFT ENGI NE AND FEW FOUND IDG OIL APPEARS HIGH, ENGINE OIL ALSO INDICATED HIGH. DRAINED IDG TO LEVEL, AL
- [SDR CALA2024091300628](https://openairdocs.org/sdr/CALA2024091300628), Sep 11, 2024: EGT INDICATION. ACTIVATED. ENG 1 EGT EXCEEDANCE ON T/O...APPRX 622 DEG ..RAN CKLST ICW FM REF FIM 71-05 TASK 833, AND MM 72-00-00-290-818-N01 FIG 603, L ENG EXCD PARAMETERS WITHIN LIMITS.
- [SDR CALA2024043001271](https://openairdocs.org/sdr/CALA2024043001271), Apr 28, 2024: ENGINE. SMOKE. TOWER REPORTED THICK BLACK SMOKE ON TO OUT OF BOTH ENGINES PERFORMED GV INSPECTION ON AC2474 DUE TO AIR RETURN FOR BLACK SMOKE ON TAKEOFF OPEN NUMBER ONE AND TW
- [SDR CALA2024041601110](https://openairdocs.org/sdr/CALA2024041601110), Apr 10, 2024: ENGINE. DAMAGED. PW4090 HPT 2ND STAGE BLADE - BORESCOPE INSPECTION FOR SULFIDATION - FOUND TWO STAGE TWO BLADES WITH PARTIAL BLOCKAGES AND SIGNS OF AIRFOIL GROWTH AND STRETCH. 7
- [SDR CALA2023092902922](https://openairdocs.org/sdr/CALA2023092902922), Sep 21, 2023: ENGINE. FAILED INSP. #1 ENGINE FAILED HUB INSPECTION EA 7231-02005 AS STATED ON CERIFICATE OF NONCONFORMANCE ADD PARTS DATA ROTABLE PARTS CHANGE WAS INDICATED - TT # 1604907 SN OFF 
- [SDR CALA2023060901789](https://openairdocs.org/sdr/CALA2023060901789), Jun 6, 2023: ENGINE. UNKNOWN. ON INITIAL TAKEOFF ROLL USING A-T, AT ABOUT MID POWER RANGE, THE RIGHT ENGINE FAILED TO CONTINUE TO ACCEL AND CREW HEARD COMPRES SOR STALL INCL WHITE EXAUST FUM
- [SDR CALA2023060501755](https://openairdocs.org/sdr/CALA2023060501755), Jun 2, 2023: ENGINE. DAMAGED. BIRD HIT LEFT ENG ON TO EGT WENT INTO RED. PERFORMED VISUAL INSPECTION OF #1 ENGINE AND FOUND BIRD WAS INGESTED INTO CORE AT 4 OCKLOCK POSITION OF ENGINE FIRST 
- [SDR CALA2022101802850](https://openairdocs.org/sdr/CALA2022101802850), Oct 18, 2022: SENSE LINE. INOPERATIVE. REJECTED T-O AT 60 KTS. #1 ENG SLOW TO SPOOL PER CREW...TOMC MO REF LOG 9736662 SEE FOR DETAILS. REPLACED 4.95 SENSE LINE ACCOMPLISHED TEST NO 4 AND TEST NO 9 O
- [SDR CALA2022071301727](https://openairdocs.org/sdr/CALA2022071301727), Jul 13, 2022: SENSOR. FAILED. RIGHT ENG FUEL FLTR EICAS. AHM DID NOT EVEN PICK UP . FILTER MSG LATCHED. NOT ACTIVE FOUND DIFFERENTIAL PRESSURE SWITCH S73001 PIN "A" SHORT TO ERASED MSG POWER
- [SDR CALA2021022400222](https://openairdocs.org/sdr/CALA2021022400222), Feb 24, 2021: ENGINE. FAILED. EGT INDICATION (ENGINE) RED FIM TASK REF: PW 71-05 TASK 833 .DUE TO NR 2 ENGINE IFSD/UNCONTAINED ENGINE FAILURE, THIS EVENT IS CURRENTLY UNDER INVESTIGATION, AW
- [SDR CALA2020071201051](https://openairdocs.org/sdr/CALA2020071201051), Jul 11, 2020: GUIDE VANE. DAMAGED. PDA 2 FAN EXIT VANE ASSY DAMAGED AT THE 2 O`CLOCK POSITION OF NR 1 ENG, LOWER PORTION DEPARTED ENGINE REMOVED THE BROKEN FEGV ON NR 1 ENGINE IAW AMM 72-33-02. P
- [SDR CALA2020062201021](https://openairdocs.org/sdr/CALA2020062201021), Jun 20, 2020: TUBE. LEAKING. FUEL LEAK CHECKLIST ILLUMNATED FOLLOWED SOP, DIVERTED, CONFERED WITH INBD FLIGHT CREW. FUEL FLOW ON R ENG 1800 LBS PER HOUR HIGHER THAN LEFT ENG BEFORE SHUT DOW
- [SDR CALA2019120302136](https://openairdocs.org/sdr/CALA2019120302136), Dec 2, 2019: HEAT EXCHANGER. INOPERATIVE. HIGH OIL PRES REPORTED IN ERROR ACTUAL EVENT WAS HIGH OIL TEMP LEFT SEE LP 3920615 FOR WORK PERFORMED. FUEL/OIL COOLER REPLACED, ALL OPS OK
- [SDR CALA2019120302129](https://openairdocs.org/sdr/CALA2019120302129), Nov 27, 2019: HEAT EXCHANGER. INOPERATIVE. 2471-1 ESN 777036. DUE TO REPORTS OF HIGH OIL TEMP AND PPE REVIEW OF QAR DATA PPE REQUESTS MINIMUM WORK TO BE ACCOMPLISHED IS REPLACEMENT OF THE FUEL COOLED OIL
- [SDR CALA2018021600618](https://openairdocs.org/sdr/CALA2018021600618), Feb 16, 2018: ENGINE. FAILED. NR 2 ENGINE FAILURE DUE TO SEVERE ENGINE DAMAGE AT 36,000 FT. IFSD PERFORMED. UNCONTAINED FAILURE. EMERGENCY DECLARED. REPLACED THE NR 2 ENGINE IAW AMM 71-00-02
- [SDR CALA2018011200113](https://openairdocs.org/sdr/CALA2018011200113), Jan 12, 2018: ENGINE. ODOR. AT IDLE DESCENT WITH HIGH PRESSURE VALVES OPEN, A NOXIOUS OILY ODOR. REPLACE THE NR 1 ENGINE IAW MM 71-00-02.
- [SDR CALA2017090403046](https://openairdocs.org/sdr/CALA2017090403046), Sep 4, 2017: ENGINE. FAULTY. EGT INDICATION (ENGINE) RED LEFT ENGINE. PERFORMED TEST 9 OF 71-00-00-720-803. TEST FAILED. FUEL FLOW HIGH 20.44 AND EGT 549 AT POWER SETTING 1.25. REPLACED NR 
- [SDR CALA2017010100002](https://openairdocs.org/sdr/CALA2017010100002), Jan 1, 2017: ENGINE. LEAKING. CABIN COMPLAINS OF HYDRAULIC FUME SMELL SEVERAL PEOPLE NAUSEOUS. OIL FOUND IN HPC STAGES 6 AND 7. REQUIRES ENG CHANGE. REPLACED NR 1 ENGINE PER AMM 72-00-00.
- [SDR CALA2016110295883](https://openairdocs.org/sdr/CALA2016110295883), Oct 27, 2016: SKIN. CRACKED. STA 2195.75 STR 7R TO 8R, FUSELAGE SKIN FOUND CRACK AROUND 2EA FASTENER. FUSELAGE SKIN STA 2195.75 STR 7R TO STR 8R REPAIRED AS PER EA 5300-01986 OP 010.
- [SDR CALA2016103195879](https://openairdocs.org/sdr/CALA2016103195879), Oct 24, 2016: SKIN. DAMAGED. BS 2195.75 STRINGERS 5 & 10L SKIN PANEL HAS A WRINKLE CRACK. REPAIRED IAW EA 5300-01986 OP 10.
- [SDR CALA2016092795761](https://openairdocs.org/sdr/CALA2016092795761), Sep 26, 2016: UNKNOWN. ODOR. CREW REPORTS A STRONG ELECTRICAL ODOR IN AREA OF 46 E-D DOWN BY FLOOR AREA AND IN ROW 45 ALSO NEAR FLOOR. FA ATTEMPTED TO ISOLATE IFE. FA ALSO NOTED GRINDING NO
- [SDR CALA2016091995740](https://openairdocs.org/sdr/CALA2016091995740), Sep 10, 2016: SKIN. DAMAGED. LEFT OUTBOARD ELEVATOR BOTTOM SURFACE PREVIOUS REPAIR COMING APART COMPLIED WITH ECRA 5520- 01499 PART 1A STEPS 1-5. ACP DAILY REPETITIVE VISUAL INSP PER PAR T 
- [SDR CALA2016082695678](https://openairdocs.org/sdr/CALA2016082695678), Aug 26, 2016: BALLAST. FAILED. SMOKE ODOR EXPERIENCED DURING CRUISE. BALLAST FOR OVERHEAD CEILING INDIRECT LIGHTING AT ROW 24HJ EMITED A PUFF OF SMOKE AND ODOR, LIGHT ASSY WENT OUT. FOUND CEI
- [SDR CALA2016082695686](https://openairdocs.org/sdr/CALA2016082695686), Aug 23, 2016: LINE. FAILED. HYD PRESSURE SYS C LOW, LESS THAN 1200 PSI. EMERGENCY DECLARED AFTER TOUCHDOWN. REPLACED NOSE GEAR HYD LINE.
- [SDR CALA2016082395653](https://openairdocs.org/sdr/CALA2016082395653), Aug 18, 2016: SKIN. CHAFED. NUMBER 1 PYLON PANEL 433CL CUTOUT INNER SKIN FOUND CHAFED. SMOOTHED OUT IAW SRM 51-10-02.
- [SDR CALA2016082395654](https://openairdocs.org/sdr/CALA2016082395654), Aug 18, 2016: BATTERY PACK. INOPERATIVE. NR 3 CABIN DOOR EMERGENCY LIGHT BATTERY PACK INOPERATIVE. REMOVED AND REPLACED BATTERY PACK. OPS CHECKED NORMAL IAW AMM 33-51-06.
- [SDR CALA2016082395655](https://openairdocs.org/sdr/CALA2016082395655), Aug 18, 2016: SKIN. CHAFED. NR 2 PYLON PANEL 443CL CUTOUT INNER SKIN CHAFING. AREA SMOOTHED OUT IAW SRM 51-10-02. HFEC PER NTM PRT 6, 51-00-06 PROC 2. NO CRACKS FOUND. REPAIRED INTERIM IAW
- [SDR CALA2016082395656](https://openairdocs.org/sdr/CALA2016082395656), Aug 18, 2016: BATTERY PACK. INOPERATIVE. NR 3 CABIN DOOR EMERGENCY LIGHT BATTERY INOPERATIVE. REMOVED AND REPLACED THE BATTERY. OPS CHECKED GOOD IAW MM 33-51-06.
- [SDR CALA2016082395657](https://openairdocs.org/sdr/CALA2016082395657), Aug 18, 2016: BATTERY PACK. INOPERATIVE. R2 DOOR EMERGENCY LIGHT BATTERY INOPERATIVE. REMOVED AND REPLACED THE BATTERY PACK IAW MM 33-51-06. OPS CHECKED GOOD.

All 3,168: https://openairdocs.org/engine/pratt-whitney-pw4077/reports.md

## STCs that may be installed (OpenAirDocs) (1)

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

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