# Service difficulty reports: N391UP

A list on [N391UP](https://openairdocs.org/aircraft/N391UP.md).

Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Newest first.

- [SDR IPXA2026092037107](https://openairdocs.org/sdr/IPXA2026092037107.md): Seal · broken · Sep 20, 2026 · N391UP · Boeing 767304 · Emergency Equipment
  > FOUND DURING PS1 CHECK EMERGENCY DECENT DEVICE NR 6 WITH BROKEN SEAL. REPLACED BY SERVICEABLE IAW AMM 25-61-00/401 REV 149.
- [SDR IPXA2026091803535](https://openairdocs.org/sdr/IPXA2026091803535.md): Door · leaking · Sep 17, 2026 · N391UP · Boeing 767304 · Passenger/Crew Doors
  > PRESSURE LEAK MAIN DOOR ALONG FLOOR AREA CENTER. ENTERY/SERVICE DOOR SEAL CHECKED AND CLEANED, NO DAMAGED FAUND. IAW AMM:52-11-00-206-001 REV:149 CONFIRMED ALL TOOLS AND PARTS REMOVED FROM AIRCRAFT. Q9DY421Y CR102006933 KISI
- [SDR IPXA2026082983908](https://openairdocs.org/sdr/IPXA2026082983908.md): Evas Unit · damaged · Aug 29, 2026 · N391UP · Boeing 767304 · Emergency Equipment
  > CAPTAIN`S EVAS UNABLE TO DO BATTERY & BLOWER CHECK DUE TO TEST BUTTON SEEMS TO BE LOOSE INSIDE BOX. THE EVAS WAS REPLACED IAW AMM 25-69-00 PB. 401, REV 05-03-21. REF AIPC 25-69-00-01-001 REV. 05-03-21.
- [SDR IPXA2025121171825](https://openairdocs.org/sdr/IPXA2025121171825.md): Landing Gear · faulted · Dec 10, 2025 · N391UP · Boeing 767304 · Landing Gear Retraction/Extension System
  > ATB, AFTER T/O WHEN RETRACTING THE L/G THE RIGHT REMAINED DOWN AND LOCKED. GEAR DISAGREE EICAS MESSAGE.RETURNED TO SNN AND REMAINING TWO GEARS EXT NORMALLY FOR LANDING. FLAPS OPERATED NORMALLY.
- [SDR IPXA2025120950228](https://openairdocs.org/sdr/IPXA2025120950228.md): Warning Light · illuminated · Dec 9, 2025 · N391UP · Boeing 767304 · Hydraulic Pump (Electric/Engine), Main
  > ATB, C HYD DEM PUMP EICAS MESSAGE FLASHED BRIEFLY AFTER START.C HYD DEM PUMP EICAS MESSAGE CAME BACK ON DURING CLIMB AND GEAR DISAGREE EICAS MESSAGE. RIGHT GEAR REMAINED DOWN. GEAR EXT NORM ON LANDING TO CONFIRM NO FURTHER ISSUES WITH THE GEAR THE AIRCRAFT WAS
- [SDR IPXA2025110656340](https://openairdocs.org/sdr/IPXA2025110656340.md): Beam · cracked · Oct 26, 2025 · N391UP · Boeing 767304 · Passenger/Crew Doors
  > A 0.3125 INCH CRACK WAS FOUND ON THE BEAM AT THE FORWARD-LOWER CORNER OF THE L1 DOOR. IAW AMM 52-11-01-404-018, REV 59. INSTALLED L1 DOOR. CONDITION CHECK NORMAL.
- [SDR IPXA2025110325464](https://openairdocs.org/sdr/IPXA2025110325464.md): Skin Panel · cracked · Oct 24, 2025 · N391UP · Boeing 767304 · Fuselage Main, Plate/Skin
  > CRACK, L1 DOOR AFT LOWER CORNER SKIN. (REPAIR) COMPLETED REPAIR I.A.W SRM 53-10-01-2R-1 REV.129 AND EGAT WORK SHEET NO. 50805 WORK INSTRUCTIONS<BR>STEP D.26(5) SAND THE OUTER SURFACES AND EDGES OF THE SCUFF PLATE AS NECESSARY TO GET A SMOOTH SURFACE.<BR>STEP D
- [SDR IPXA2025110331356](https://openairdocs.org/sdr/IPXA2025110331356.md): Skin Panel · cracked · Oct 24, 2025 · N391UP · Boeing 767304 · Fuselage Main, Plate/Skin
  > CRACK, R1 DOOR AFT LOWER CORNER SKIN. (REPAIR) COMPLETED REPAIR I.A.W SRM 53-10-01-2R-1 REV.129 AND EGAT WORK SHEET NO. 50807 WORK INSTRUCTIONS, STEP D.26 (5) SAND THE OUTER SURFACES AND EDGES OF THE SCUFF PLATE AS NECESSARY TO GET A SMOOTH SURFACE.<BR>STEP D
- [SDR IPXA2025100641817](https://openairdocs.org/sdr/IPXA2025100641817.md): Hydraulic System · leaking · Oct 1, 2025 · N391UP · Boeing 767304 · Hydraulic System, Main
  > ATB AFTER TAKEOFF WHILE RETRACTING FLAPS FROM F5 TO F1 WE RECEIVED C HYD QTY ABD STATUS PAGE SHOWED QUANTITY DECREASING #8 SPOILER ACTUATOR REPLACED IAW AMM 26-61-02-401. LEAK CHECK PERFORMED AND NOT FOUND LEAKS. SPOILER OPTS PERFORMED IAW AMM 27-61-00 AND SYS
- [SDR IPXA2025100241817](https://openairdocs.org/sdr/IPXA2025100241817.md): Warning Message · illuminated · Oct 1, 2025 · N391UP · Boeing 767304 · Hydraulic System, Main
  > AIR TURNBACK. AFTER TAKEOFF WHILE RETRACTING FLAPS FROM F5 TO F1 WE RECEIVED C HYD QTY ABD STATUS PAGE SHOWED QUANTITY DECREASING
- [SDR IPXA2024052846775](https://openairdocs.org/sdr/IPXA2024052846775.md): Warning Message · illuminated · May 24, 2024 · N391UP · Boeing 767304 · Landing Gear Position and Warning
  > *DIVERSION* AIR/GND DISAGREE STATUS MESSAGE T/S C/O IAW FIM 32-09 FAULT TREE 810 REV142. PSEU BITE PROCEDURE C/O IAW FIM 32-09 FAULT TREE 803 AND FOUND FAULT CODE "S244" NOT COMPRESSED SENSOR OF NLG. DURING CHECK, S244 SENSOR TARGET FOUND LOOSE. SENSOR TARGET
- [SDR IPXA2023111554296](https://openairdocs.org/sdr/IPXA2023111554296.md): Hinge · broken · Nov 1, 2023 · N391UP · Boeing 767304 · Wing, Attach Fittings
  > DURING WAI FOUND INSPECTIONPANEL, 2 FEET OUTBOARD OF RIGHT ENGINE, HINGES BROKEN BUT PANEL STILL ATTACHED. INSTALLED TAI SEAL DOOR PANEL ON RH WING OUTB OF ENG IAW AMM 57-41-58/401 REV 140 THIS CLOSED DMI
- [SDR IPXA2023110154296](https://openairdocs.org/sdr/IPXA2023110154296.md): Unknown · unknown · Nov 1, 2023 · N391UP · Boeing 767304 · Wing, Fuselage Attach Fittings
  > *SDR FILED OPEN* DURING WAI FOUND INSPECTIONPANEL, 2 FEET OUTBOARD OF RIGHT ENGINE, HINGES BROKEN BUT PANEL STILL ATTACHED. PANEL REMOVED AND PANEL DEFERRED IAW CDL 57-41-2.<BR>PLACKARD INSTALLED.
- [SDR IPXA2023102376262](https://openairdocs.org/sdr/IPXA2023102376262.md): Landing Gear · warning message · Oct 20, 2023 · N391UP · Boeing 767304 · Landing Gear System
  > EICAS GEAR DISAGREE. AFTER T/O LANDING GEAR LEVER UP RIGHT MAIN GEAR WOULD NOT RETRACT. REVERSED DMP PER MEL 32-30-1. R+R RH MAIN LANDING GEAR SIDE BRACE LOCK ACTUATOR PER AMM 32-32-02 PB 401 REV140. TEST PASS. LEAK CHECK SATIS. CHECKED LOCK LINKS, JURY STRUT
- [SDR IPXA2023070402978](https://openairdocs.org/sdr/IPXA2023070402978.md): Fmc · frozen · Jul 4, 2023 · N391UP · Boeing 767304 · Flight Management Computing Hardware System
  > AIRTURN BACK DUE TO BOTH FMC UNRESPONSIVE IN LEGS + ROUTE PAGES ENTIRE ROUTE WAS ERASED. BOTH FMC IN STANDBY ONE. REPLACED BOTH FMC IAW AMM: 34-61-02/401, REV: 139. OPS TEST SATIS, VERIFIRED CORRECT SOFTWARE P/N ARE INSTALLED IAW SOFTWARE MATRIX, REV: 130.<BR>
- [SDR IPXA2022111688163](https://openairdocs.org/sdr/IPXA2022111688163.md): Power Supply · inoperative · Nov 16, 2022 · N391UP · Boeing 767304 · Emergency Lighting
  > INSPECTION TYPE:N/ARH DOME EMERGENCY LT AND THRESHOLD EMER LT NOT WORKINGT/S'D IAI WDM 33-51-11. FOUND EMER LT BATT SUPPLY U/S R/R EMER PWR BATT SUPPLY IAW IAI AMM 33-51-00. P/N ON/OFF 3013-1A S/N ON 67960 S/N OFF 119067 TAG 965757. REF IAI AIPC 33-51-00-01N-4
- [SDR IPXA2022070583807](https://openairdocs.org/sdr/IPXA2022070583807.md): Door · inoperative · Jul 5, 2022 · N391UP · Boeing 767304 · Passenger/Crew Doors
  > INSPECTION TYPE:N/AUNABLE TO OPEN UP MAIN CARGO DORAFTER CYCLING OF GROUND HANDLING BUS NORMAL MAIN DECK CARGO DOOR OPS ESTABLISHED IAW AMM 52-10-00
- [SDR IPXA2022060282759](https://openairdocs.org/sdr/IPXA2022060282759.md): Eicas · activation error · Jun 2, 2022 · N391UP · Boeing 767304 · Stabilizer Control System
  > INSPECTION TYPE:NA***MX REROUTE*** UNSCHD STAB TRIM MESSAGE ONCE AT 1000 FT CLIMBING AND THEN AGAIN AT FL 320 - 360. CENTER AP ENGAGED.T/S PERF IAW FIM 27-09-00-815-813 REV 136.00 REF ALERT T204080, REPLACED L STCM, STAB TRIM POS XMTRS M519 & M520 & FLAP SLAT
- [SDR IPXA2022031580121](https://openairdocs.org/sdr/IPXA2022031580121.md): Light · faulted · Mar 15, 2022 · N391UP · Boeing 767304 · Passenger/Crew Doors
  > ENTRY DOOR LIGHT ON OVERHEAD PANEL INTERMITTENT IN CRUISE FLT. NO EICAS MESSAGE. NOTE: LIGHT CHOP AT FLIGHT LEVEL 350. LATCH PIN AND LATCH PIN CABLE ADJUSTED IAW AMM 52-11-00-501-825-018 REV 135.05. OPS TEST SATIS. THIS CLOSES 775704.
- [SDR IPXA2022031380060](https://openairdocs.org/sdr/IPXA2022031380060.md): None · none · Mar 13, 2022 · N391UP · Boeing 767304 · Passenger/Crew Doors
  > INSPECTION TYPE:N/AENTRY DOOR LIGHT ON OVHD PNL INTERMITTENT ON IN CRUISE FLIGHT. NO EICAS MSG.OPS CHECK ON CREW ENTRY DOOR IAW AMM 52-11-00-715-128 REV 135.05 TESTED SATIS. THIS CLEARS M775632
- [SDR IPXA2022011377830](https://openairdocs.org/sdr/IPXA2022011377830.md): None · none · Jan 12, 2022 · N391UP · Boeing 767304 · Pneumatic Distribution System
  > INSPECTION TYPE:ETOP*ETOPS FILED OPEN*A/C OOS* R ENG BLEED OFF SHOWS & R ENG BLEED OFF LT ILLUM AFTER ENG START. QRH PROCEDURE DID NOT FIX ISSUE.RH ENG PRV & PRV CONTROLLER REPLACED IAW AMM 36-11-18-401 REV. 135.02 & AMM 36-11-19-401 REV. 135.02, NO HELP. OPC
- [SDR IPXA2021121977078](https://openairdocs.org/sdr/IPXA2021121977078.md): Warning Message · false activation · Dec 19, 2021 · N391UP · Boeing 767304 · Trailing Edge Flap Control System
  > DURING TAKEOFF AND DURING FLAP RETRACTION, FLAPS STOPPED AT JUST THAN 5 AND THE TE FLAP ASYM EICAS MSG ILLUMINATED. RAN THE CHECKLIST IAW QRH, CONSULTED WITH DISPATCH AND BURNED DOWN FUEL.FIM TASK 27-51 815-810 APPLIED. FLAP PDU BY-PASS LEVER CHECKED WITH ALT
- [SDR IPXA2021103175473](https://openairdocs.org/sdr/IPXA2021103175473.md): None · none · Oct 21, 2021 · N391UP · Boeing 767304 · Fuselage Structure (General)
  > INSPECTION TYPE:C13DAMAGE ON MAIN DECK FLOOR PANEL ASSY (P/N:368-53-16-94477-127) BETWEEN LBL 11.0 AND RBL 11.0.FABRICATE A NEW FLOOR PANEL I.A.W UPS EO B767-5320-82003-A
- [SDR IPXA2021060370142](https://openairdocs.org/sdr/IPXA2021060370142.md): Warning Message · false activation · Jun 3, 2021 · N391UP · Boeing 767304 · Weather Radar System
  > DIVERSION-NO EMERG DECL'D & NO EQUIP USED-LANDED UNEVENTFULLY-AC TAKEN OOS** AFTER SUCCESSFUL GRND TEST OF WX RDR, AFTER AIRBOURNE WX RDR NEVER WORKED. "WXR SYS" STATUS MSG DISPLAYED. AT NO TIME WAS THERE EVER ANY INDICATION OF A WX SWEEP ON THE HSI. INFLT TE
- [SDR IPXA2021040967978](https://openairdocs.org/sdr/IPXA2021040967978.md): Fuel Filter · contaminated · Apr 9, 2021 · N391UP · Boeing 767304 · Engine Fuel Distribution
  > INSPECTION TYPE:NA**ATB - NO EMERGENCY DECLARED, NO EMERG EQUIP USED.** DURING CLIMB L ENG FUEL FILT EICAS DISPLAYED AFTER PERFORMING QRH PROCEDURE EICAS MSG WAS GONE BUT STATUS MSG STILL DISPLAYED.T/S PERFOMRED IAW FIM 73-11-00-815-803-H00 REV 132.00 FOUND C
- [SDR IPXA2020121463392](https://openairdocs.org/sdr/IPXA2020121463392.md): Engine · failed · Dec 14, 2020 · N391UP · Boeing 767304 · Engine (Turbine/Turboprop)
  > INSPECTION TYPE: NA ATB-EMERGENCY DECLARED, NO EQUIPMENT USED. A/C WAS TAKEN OUT OF SERVICE. ON DEPARTURE AT 1500' AGL AFTER SELECTING VNAV RT ENGINE N1 ROLLED BACK TO 27% LOUD S RUMBLE IN AIRCRAFT W/POWER LOSS IN RT ENGINE. ENGINE RAN AT IDLE LEFT UNTIL CL
- [SDR IPXA2020101261243](https://openairdocs.org/sdr/IPXA2020101261243.md): Warning Message · illuminated · Oct 12, 2020 · N391UP · Boeing 767304 · Trailing Flap Position Indicating System
  > INSPECTION TYPE: NA, ATB, EMERGENCY DECLARED, NO EMERGENCY EQUIPMENT USED. EMERGENCY CANCELLED AFTER LANDING, LANDING UNEVENTFUL. TRAILING EDGE FLAP ASYMMETRY EICAS MESSAGE APPEARED DURING FLAP RETRACTION FOR 5 TO 1 AND TRAILING EDGE DISCRETE LIGHT FIM TASK
- [SDR IPXA2019122325262](https://openairdocs.org/sdr/IPXA2019122325262.md): Scuff Plate · dirty · Dec 21, 2019 · N391UP · Boeing 767304 · Passenger/Crew Doors
  > ENTRY DOOR HAS PRESSURE LEAK. DURING CLIMB AND DESCENT ABOUT 2-3 CABIN DIFF.CABIN PRESS LEAK TEST PERFORMED IAW AMM 05-51-24-201 REV 128.03 FOUND LEAK AT LOWER DOOR AREA AND SCUFF PLATE NOT SUFFICIENT SEALED. SCUFFPLATE CELANED AND NEW SEALANT APPLIED IAW AMM
- [SDR IPXA2019122095180](https://openairdocs.org/sdr/IPXA2019122095180.md): Door · leaking · Dec 19, 2019 · N391UP · Boeing 767304 · Passenger/Crew Doors
  > INSPECTION TYPE:N/AA VERY LOUD AIR PRESSURE WHISTLE IS HEARD DURING CLIMBOUT BETWEEN 3 AND 5.5 DIFFERENTIAL. OCCURS FROM 9500 TO FL180.CREW REPORTED NOISE FROM 1L ENTRY DOOR. DOOR INSPECTED IAW AMM 52-11-00-601 REV 128.03. FOUND DOOR SEALS DIRTY. SEALS CLEANED
- [SDR MK1Y2019100610003](https://openairdocs.org/sdr/MK1Y2019100610003.md): Skin · dented · Oct 4, 2019 · N391UP · Boeing 767304 · Fuselage Main, Plate/Skin
  > DENT ON FUSELAGE SKIN BETWEEN STA 1417 AAND STA 1439, STR 37-38R, DENT DIMENSION:Y=0.067", A=1.24", RATIO: A/Y=18
- [SDR MK1Y2019100610002](https://openairdocs.org/sdr/MK1Y2019100610002.md): Stiffener · dented · Oct 4, 2019 · N391UP · Boeing 767304 · Fuselage Main, Longeron/Stringer
  > FOUND DENTS ON LONGITUDINAL STIFFENER THEE DENTS ARE APPROXIMATELY 4.5" FROM AFT SIDE OF STIFFENER AND ARE 3.5" IN LENGTH.
- [SDR MK1Y2019100610](https://openairdocs.org/sdr/MK1Y2019100610.md): Structure · corroded · Oct 4, 2019 · N391UP · Boeing 767304 · Fuselage Main, Longeron/Stringer
  > CORROSION FOUND ON LONGERON CHORD STA 1065-1087, STR 23R-24R ON UPPER FLANGE

## 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 n_number = 'N391UP' AND registry_match = 'registration'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/aircraft/N391UP/reports

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