# Service difficulty reports: N404UP

A list on [N404UP](https://openairdocs.org/aircraft/N404UP.md).

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

Page 1 of 5 · 235 reports

- [SDR IPXA2026102245017](https://openairdocs.org/sdr/IPXA2026102245017.md): Strap · corroded · Oct 7, 2026 · N404UP · Boeing 75724APF · Fuselage Miscellaneous Structure
  > MAIN DECK CABIN BTW STA 1400 TO 1420 AND RBL 45.50 STABILIZATION STRAP HAS EXFOLIATION, C/W SRM 51-10-02-0G-0.
- [SDR IPXA2026102226652](https://openairdocs.org/sdr/IPXA2026102226652.md): Deck Plate · corroded · Oct 6, 2026 · N404UP · Boeing 75724APF · Fuselage Main, Structure
  > MAIN CABIN AFT DECK PLATE BTW STA 1681 TO 1720 AND LBL 45.50 TO RBL 45.50 HAS CORROSION, MISSING NUTS AND BARE METAL, RII GMM 04-02.
- [SDR IPXA2026101326754](https://openairdocs.org/sdr/IPXA2026101326754.md): Floorbeam · corroded · Oct 6, 2026 · N404UP · Boeing 75724APF · Fuselage Main, Floor Beam
  > MAIN DECK CABIN BS 1681 AND BTW BL 0 TO RBL 24.75 FLOOR BEAM HAVE EXFOLATION, FLL-045.
- [SDR IPXA2026101426047](https://openairdocs.org/sdr/IPXA2026101426047.md): Angle · corroded · Oct 6, 2026 · N404UP · Boeing 75724APF · Fuselage Main, Structure
  > CREW DOOR SUBFLOOR BEAM ANGLE BS 297 EXFOLIATED ON UPPER AND LOWER SURFACE BELOW DOOR. C/W GMM 04-02 RII REQUIREMENTS, REMOVED SUBFLOOR BEAM ANGLE.
- [SDR IPXA2026101223930](https://openairdocs.org/sdr/IPXA2026101223930.md): Seat Track · corroded · Oct 6, 2026 · N404UP · Boeing 75724APF · Fuselage, Seat/Cargo Attach Fittings
  > SURFACE CORROSION ON UNDERSIDE OF CAPTS' FWD INBD SEAT TRACK. PART REPLACEMENT IAW SRM 51-10-02-0G-0, PARA 9.
- [SDR IPXA2026101499479](https://openairdocs.org/sdr/IPXA2026101499479.md): Strap · corroded · Oct 5, 2026 · N404UP · Boeing 75724APF · Fuselage Miscellaneous Structure
  > AFT CARGO COMPARTMENT CEILING STABILIZATION STRAP HAS EVIDENCE OF CORROSION AT MULTIPLE NUT PLATE AREAS APPROX BTW BS 1220 AND BS 1240, LBL 45.50,
- [SDR IPXA2026100989069](https://openairdocs.org/sdr/IPXA2026100989069.md): Strap · corroded · Oct 4, 2026 · N404UP · Boeing 75724APF · Fuselage Miscellaneous Structure
  > FWD CARGO RT CENTER OTBD CEILING STABILIZATION STRAP CORRODED AT BS 800.
- [SDR IPXA2026102279597](https://openairdocs.org/sdr/IPXA2026102279597.md): Frame · damaged · Oct 3, 2026 · N404UP · Boeing 75724APF · Elevator Miscellaneous Structure
  > RIGHT ELEVATOR LOWER CONDUCTIVE FRAME REQUIRE CLEAN AND EVALUATE BY CORROSION EVIDENCE, F C/W LOCATED AND DRILLED NEW CONDUCTIVE FRAME P/N 183N2007Y10 TAG 086984 AND FABRICATED SPLICE PLATE AT R/H ELEVATOR LOWER AREA IAW B757-200PF SRM 51-40-05-OG-0 AND DWG 1
- [SDR IPXA2026102279434](https://openairdocs.org/sdr/IPXA2026102279434.md): Bonding Strap · corroded · Oct 3, 2026 · N404UP · Boeing 75724APF · Horizontal Stabilizer Miscellaneous Structure
  > R/H HORIZONTAL STAB TIP HAS FITTING TO ATTACH BONDING STRAP WITH EXFOLIATION.
- [SDR IPXA2026033098418](https://openairdocs.org/sdr/IPXA2026033098418.md): A/C Pack · odor · Mar 27, 2026 · N404UP · Boeing 75724APF · Cabin Cooling System
  > EXHAUST SMELL COMING FROM PACKS RAN APU FOR AN HOUR WITH PACKS IN HOT AND THEN COLD, NO SMELLS NOTED, RAN EACH ENGINE AT IDLE WITH NO SMELLS NOTED, RAN EACH ENGINE AT TAKE-OFF POWER SETTINGS WITH PACKS IN HOT AND COLD TEMP SETTINGS, NO ABNORMAL SMELL WAS NOTED
- [SDR IPXA2026032798418](https://openairdocs.org/sdr/IPXA2026032798418.md): A/C Pack · odor · Mar 27, 2026 · N404UP · Boeing 75724APF · Cabin Cooling System
  > EXHAUST SMELL COMING FROM PACKS RAN APU FOR AN HOUR WITH PACKS IN HOT AND THEN COLD, NO SMELLS NOTED, RAN EACH ENGINE AT IDLE WITH NO SMELLS NOTED, RAN EACH ENGINE AT TAKE-OFF POWER SETTINGS WITH PACKS IN HOT AND COLD TEMP SETTINGS, NO ABNORMAL SMELL WAS NOTED
- [SDR IPXA2026011324433](https://openairdocs.org/sdr/IPXA2026011324433.md): Handle · damaged · Jan 2, 2026 · N404UP · Boeing 75724APF · Passenger/Crew Doors
  > CREW BENTRY DOOR- HANDLE IS MAKING CONTACT WITH PAN AND WORN AT ATTACHMENT TO SLIDING SHAFT ASSY,REF CMM 52-11-08 AND AMM 52-12-01-646-001 DOOR INSPECTION. REMOVED AND REPLACED ALL WORN PARTS ON THE CREW DOOR, INNER AND OUTER HANDLES AND CENTER SHAFT ASSEMBLY
- [SDR IPXA2026010224433](https://openairdocs.org/sdr/IPXA2026010224433.md): Handle · out of position · Jan 2, 2026 · N404UP · Boeing 75724APF · Passenger/Crew Doors
  > CREW ENTRY DOOR- HANDLE IS MAKING CONTACT WITH PAN AND WORN AT ATTACHMENT TO SLIDING SHAFT ASSY,REF CMM 52-11-08 AND AMM 52-12-01-646-001 DOOR INSPECTION.
- [SDR IPXA2024120393512](https://openairdocs.org/sdr/IPXA2024120393512.md): Tag · missing · Dec 3, 2024 · N404UP · Boeing 75724APF · Life Jacket
  > JUMP SEAT LIFE VEST ID TAG MISSING REMOVED AND REPLACED CAPT. LIFE VEST WITH A SERVICEABLE UNIT. NO DEFECTS NOTED.
- [SDR IPXA2024110601614](https://openairdocs.org/sdr/IPXA2024110601614.md): Angle · damaged · Oct 12, 2024 · N404UP · Boeing 75724APF · Fuselage Miscellaneous Structure
  > ON THE STR 3 REPAIR ANGLE FOR THE APU INLET STRUCTURE, PILOTS DO NOT LINE UP WITH EXISTING HOLE LOCATIONS. WORKED PER VT-MAE EA 757-5380-27-A3714, REV- AND EO-91939-REQ1.
- [SDR IPXA2024102282978](https://openairdocs.org/sdr/IPXA2024102282978.md): Gusset · gouged · Oct 5, 2024 · N404UP · Boeing 75724APF · Nacelle/Pylon, Main Frame
  > PYLON #1 REAR SPAR BOTTON CORNER AREA HAS FITTING WITH GOUGE. DOT 34-020. VERIFIED ALL WORK ACCOMPLISHED PER UPS EO: EO-91767-REQ1 AND VT MAE EA 757-5453-27-A3715 REV.
- [SDR IPXA2024102293636](https://openairdocs.org/sdr/IPXA2024102293636.md): Latch · inoperative · Sep 25, 2024 · N404UP · Boeing 75724APF · Passenger/Crew Doors
  > CREW ENTRY DOOR LATCHES UPPER AND LOWER APPEAR TO HAVE GOUGES. 89-413.BLENDED OUT GOUGES ONUPPER AND LOWER LATCH CAMS ON CREW ENTRY DOOR. IAW SREO-14721-REQ001.
- [SDR IPXA2024092693636](https://openairdocs.org/sdr/IPXA2024092693636.md): Latch · gouged · Sep 25, 2024 · N404UP · Boeing 75724APF · Doors
  > SDR FILED OPEN, CREW ENTRY DOOR LATCHES UPPER AND LOWER APPEAR TO HAVE GOUGES.
- [SDR IPXA2024091121256](https://openairdocs.org/sdr/IPXA2024091121256.md): Light · inoperative · Sep 10, 2024 · N404UP · Boeing 75724APF · Emergency Lighting
  > EMERGENCY LIGHT ANNUNCIATION INOP. R&R IAW AMM 33-51-08. OPS CHECK GOOD AT THIS TIME
- [SDR IPXA2023090640446](https://openairdocs.org/sdr/IPXA2023090640446.md): Probe · unknown · Sep 5, 2023 · N404UP · Boeing 75724APF · Ice/Rain Protection System
  > AT 300€™ EICAS MSG TAT FOLLOWED BY AUTO THROTTLE MSG. RAN QRH, DID AIR TURN BACK. ONCE ON GROUND, TAT EICAS MSG WENT AWAY. R AND R€™D TOTAL AIR TEMP PROBE PER MM 32-12-02-401. OPS CHECKS GOOD.
- [SDR IPXA202309050446](https://openairdocs.org/sdr/IPXA202309050446.md): Unknown · unknown · Sep 5, 2023 · N404UP · Boeing 75724APF · Ice/Rain Protection System
  > *** ATB *** *** SDR FILED OPEN *** AT 300€™ EICAS MSG TAT FOLLOWED BY AUTO THROTTLE MSG. RAN QRH, DID AIR TURN BACK. ONCE ON GROUND, TAT EICAS MSG WENT AWAY. R AND R€™D TOTAL AIR TEMP PROBE PER MM 32-12-02-401. OPS CHECKS GOOD.
- [SDR IPXA2022102487441](https://openairdocs.org/sdr/IPXA2022102487441.md): Warning Light · illuminated · Oct 21, 2022 · N404UP · Boeing 75724APF · Airborne Auxiliary Power Unit (APU) System
  > EMERGENCY DECLARED, LANDED UNEVENTFULLY WITH APU "FAULT. RESTART UNSUCCESSFUL. APU FAULT OCCURRED AS THE POWER RETARDED ON INITIAL DESCENT INTO DFWT/S APU "FAULT", FOUND "REVERSE FLOW" MINI FLAG. PERFORMED FIM 49-11-00-815-853-001, MINI FLAG RESET, APU STA
- [SDR IPXA2022092786663](https://openairdocs.org/sdr/IPXA2022092786663.md): None · none · Sep 27, 2022 · N404UP · Boeing 75724APF · Standard Practices/Structures
  > INSPECTION TYPE:SEG1AFT CARGO COMPARTMENT HAS EXISTING FRAME REPAIR AT STA 1480, BETWEEN S-23R AND S-28R.REPAIRED PER UPS EO B757-5310-84746-A AND VT MAE EA 757-5360-A3028.
- [SDR IPXA2022092786657](https://openairdocs.org/sdr/IPXA2022092786657.md): Frame · dented · Sep 27, 2022 · N404UP · Boeing 75724APF · Fuselage Main, Frame
  > INSPECTION TYPE:SEG3, AFT CARGO COMPARTMENT FRAME AT STA 1540 BETWEEN S-25L AND S*24L HAS DENT.ACCOMPLISHED REPAIR IAW 757-200PF SRM REV 114.00 53-00-07-2R-5 DETAIL III.
- [SDR IPXA2022092486555](https://openairdocs.org/sdr/IPXA2022092486555.md): Frame · dented · Sep 14, 2022 · N404UP · Boeing 75724APF · Fuselage Main, Frame
  > INSPECTION TYPE:C 21AFT CARGO COMPT R/H SIDE FRAME AT STA 1580 BETWEEN S-22R TO S-23R THERE IS DENT.ACCOMPLISHED REPAIR IAW 757-200PF SRM REV 114.00 CHAPTER 53-00-07-2R-5 DETAIL 1 PER SRM 53-60-07-2R.
- [SDR IPXA2022090585899](https://openairdocs.org/sdr/IPXA2022090585899.md): Lamp · inoperative · Sep 3, 2022 · N404UP · Boeing 75724APF · Emergency Lighting
  > INSPECTION TYPE:N/AL1 ENTRY DOOR EMERGENCY LIGHT HAS SEVERAL BULBS BURNT OUTRELAMPED 11 EA BULBS ON ENTRY DOOR EMERGENCY LIGHT IAW AMM 33-51-01 OPS CK GOOD
- [SDR IPXA2020110562079](https://openairdocs.org/sdr/IPXA2020110562079.md): Skin · delaminated · Nov 5, 2020 · N404UP · Boeing 75724APF · Fuselage Main, Plate/Skin
  > INSPECTION TYPE: SEG 4 AFT FUSELAGE SKIN FROM STA 1980 TO 1992.8 AND BETWEEN 15L AND 15R. ACCOMPLISHED REPAIR, PER AVENIR AVIATION EO AVR 53-80-01-04 REV.
- [SDR IPXA2020110362001](https://openairdocs.org/sdr/IPXA2020110362001.md): Skin · delaminated · Nov 3, 2020 · N404UP · Boeing 75724APF · Fuselage Main, Plate/Skin
  > INSPECTION TYPE: SEG 4 DENT 6 (TOP OF APU) 5.75" FWD OF BS 1963, 3.5" L OF BLO A=.125 Y=.008 A/Y=15.6 FOUND TO BE DELAMINATED. REPAIRED IAW B757 SRM 51-7010-2R, PER SRM 53-80-01-2R.
- [SDR IPXA2020110362000](https://openairdocs.org/sdr/IPXA2020110362000.md): Skin · delaminated · Nov 3, 2020 · N404UP · Boeing 75724APF · Fuselage Main, Plate/Skin
  > INSPECTION TYPE:SEG 4 DENT RIGHT OF CENTER TAILCONE (11.5" AFT OF BS 1896.20 10" R OF BLO) EVALUATED DEPTH TO BE.167" DOT 72/019. REPAIRED AREA IAW B757 SRM 51-70-10-2R, PER SRM 53-80-01-2R.
- [SDR IPXA2020110361999](https://openairdocs.org/sdr/IPXA2020110361999.md): Skin · delaminated · Nov 3, 2020 · N404UP · Boeing 75724APF · Fuselage Main, Plate/Skin
  > INSPECTION TYPE: SEG 4 DENT 4 (TOP OF APU) 8" AFT OF BS 1918.9 14" LOT BLO A=.187 Y=.015 A/Y=12.46 FOUND TO BE DELAMINATED. REPAIRED IAW B757 SRM 51-70-10-2R, PER SRM 53-80-01-2R.
- [SDR IPXA2020110361998](https://openairdocs.org/sdr/IPXA2020110361998.md): Skin · delaminated · Nov 3, 2020 · N404UP · Boeing 75724APF · Fuselage Main, Plate/Skin
  > INSPECTION TYPE: SEG 4 DENT (TOP OF APU) 16" R OF BLO A=/25 Y=.045 A/Y=5.5 FOUND TO BE DELAMINATED. REPAIRED AREA, IAW B757 SRM 51-70-10-2R PER EA 757-5380-27-A2515 REV- PER EO B757-5330-78319-A.
- [SDR IPXA2020101661351](https://openairdocs.org/sdr/IPXA2020101661351.md): Floor Panel · damaged · Oct 16, 2020 · N404UP · Boeing 75724APF · Fuselage Floor Panel
  > INSPECTION TYPE: SEG 4 FLOOR PANEL 242XGF EDGE DAMAGE. FABRICATED NEW FLOOR PANEL 242XGF, PER SREO B757-5320-9692-K MATERIAL 5024N 40001 SS-G BATCH 003546253.
- [SDR IPXA2020101661350](https://openairdocs.org/sdr/IPXA2020101661350.md): Floor Panel · damaged · Oct 16, 2020 · N404UP · Boeing 75724APF · Fuselage Floor Panel
  > INSPECTION TYPE: SEG 4 FLOOR PANEL 242XFL EDGE DAMAGED. FABRICATED NEW FLOOR PANEL 242XFL, PER SREO B757-5320-9692-K MATERIAL 5024N400001 SS-G BATCH 3546253.
- [SDR IPXA2020080358561](https://openairdocs.org/sdr/IPXA2020080358561.md): Stringer · corroded · Aug 3, 2020 · N404UP · Boeing 75724APF · Fuselage Main, Longeron/Stringer
  > FUSELAGE SKIN SHIM CORRODED. REPAIR BETWEEN BS 1461 - 1467, STRINGER 25L. REMOVED & REPLACED THE STRINGER SECTION IAW EO B757-5330-77293-B ON NRC 662932.
- [SDR IPXA2020062657004](https://openairdocs.org/sdr/IPXA2020062657004.md): Transmitter · faulty · Jun 24, 2020 · N404UP · Boeing 75724APF · Trailing Flap Position Indicating System
  > INSPECTION TYPE:N/A EMERGENCY DELCARED, WHEN SELECTING FLAPS 1, THE TRAILING EDGE FLAP ASYM EICAS CAUTION APPEARED ALONG WITH THE TRAILING EDGE LIGHT AND THE FLAP INDICATOR NEEDLES SHOWED A SPLIT. R&R LT FLAP POSITION TRANSMITTER IAW AMM 27-58-03-424-015. OP
- [SDR IPXA2020061556580](https://openairdocs.org/sdr/IPXA2020061556580.md): Bypass Valve · leaking · Jun 14, 2020 · N404UP · Boeing 75724APF · Hydraulic System, Main
  > INSPECTION TYPE:N/A EMERGENCY DECLARED, LANDED SAFELY. TOW REQUIRED RWY 35L AT B6. MAIN L EICAS MSG L HYD SYS PRESS SHOWS & ASSOCIATED SYS PRESS LIGHT ON HYD QTY WENT TO ZERO BUT LATER IN CRUISE TO 0.15 REF. RUDDER RATIO, LT HYD QTY EICAS MESSAGES, AND POW
- [SDR IPXA2018110235612](https://openairdocs.org/sdr/IPXA2018110235612.md): Skin · damaged · Nov 2, 2018 · N404UP · Boeing 75724APF · Trailing Edge Flaps
  > FLAP SKIN FOUND GOUGES & CHAFES, PREVIOUSLY BLEND LOCATION. REPAIRED IAW SRM 51-70-10 IAW EO B757-5750-70453-A
- [SDR IPXA2018101835138](https://openairdocs.org/sdr/IPXA2018101835138.md): Floor Panel · delaminated · Oct 18, 2018 · N404UP · Boeing 75724APF · Fuselage Floor Panel
  > FLIGHT DECK FLOOR PANEL 211XAF DELAMINATED. FABRICATED NEW FLOOR PANEL 211XAF PER SREO B757-5320-9692-K.
- [SDR IPXA2018102295176](https://openairdocs.org/sdr/IPXA2018102295176.md): Floor Panel · broken · Oct 11, 2018 · N404UP · Boeing 75724APF · Fuselage Miscellaneous Structure
  > MCD FLOOR PANEL 251XF WAS BROKEN. FABRICATED A NEW FLOOR PANEL IAW SREO B757-5320-9692-K.
- [SDR IPXA2018101835137](https://openairdocs.org/sdr/IPXA2018101835137.md): Floor Panel · delaminated · Oct 11, 2018 · N404UP · Boeing 75724APF · Fuselage Floor Panel
  > FLIGHT DECK FLOOR PANEL 212XAF DELAMINATED. FABRICATED NEW FLOOR PANEL 212XAF PER SREO B757-5320-9692-K.
- [SDR IPXA2018101935168](https://openairdocs.org/sdr/IPXA2018101935168.md): Floor Panel · broken · Oct 11, 2018 · N404UP · Boeing 75724APF · Fuselage Floor Panel
  > MCD FLOOR PANEL 242XJF IS BROKEN. FABRICATED NEW FLOOR PANEL 242XJF PER SREO B575-5320-9692-K
- [SDR IPXA2018110213576](https://openairdocs.org/sdr/IPXA2018110213576.md): Floor Panel · delaminated · Oct 9, 2018 · N404UP · Boeing 75724APF · Fuselage Floor Panel
  > MCD FLOOR PANEL 231XGF WAS DELAMINATED. FABRICATED A NEW FLOOR PANEL IAW SREO B757-5320-9692K.
- [SDR IPXA2018110213575](https://openairdocs.org/sdr/IPXA2018110213575.md): Floor Panel · delaminated · Oct 9, 2018 · N404UP · Boeing 75724APF · Fuselage Floor Panel
  > MCD FLOOR PANEL 232XGF WAS DELAMINATED. FABRICATED A NEW FLOOR PANEL IAW SREO B757-5320-9692K.
- [SDR IPXA2018110213574](https://openairdocs.org/sdr/IPXA2018110213574.md): Floor Panel · delaminated · Oct 9, 2018 · N404UP · Boeing 75724APF · Fuselage Floor Panel
  > MCD FLOOR PANEL 231XFF WAS DELAMINATED. FABRICATED A NEW FLOOR PANEL IAW SREO B757-5320-9692K.
- [SDR IPXA2018110213564](https://openairdocs.org/sdr/IPXA2018110213564.md): Floor Panel · delaminated · Oct 9, 2018 · N404UP · Boeing 75724APF · Fuselage Floor Panel
  > MCD FLOOR PANEL 231XCF WAS DELAMINATED. FABRICATED A NEW FLOOR PANEL IAW SREO B757-5320-9692K
- [SDR IPXA2018110215572](https://openairdocs.org/sdr/IPXA2018110215572.md): Floor Panel · delaminated · Oct 9, 2018 · N404UP · Boeing 75724APF · Fuselage Floor Panel
  > MCD FLOOR PANEL WAS DELAMINATED. FABRICATED FLOOR PANEL IAW SREO B757-5320-9692K.
- [SDR IPXA2018110215571](https://openairdocs.org/sdr/IPXA2018110215571.md): Floor Panel · delaminated · Oct 9, 2018 · N404UP · Boeing 75724APF · Fuselage Floor Panel
  > MCD FLOOR PANEL 232XFF WAS DELAMINATED. FABRICATED A NEW FLOOR PANEL IAW SREO B757-5320-9692K.
- [SDR IPXA2018110215570](https://openairdocs.org/sdr/IPXA2018110215570.md): Floor Panel · delaminated · Oct 9, 2018 · N404UP · Boeing 75724APF · Fuselage Floor Panel
  > MCD FLOOR PANEL 232XEF WAS DELAMINATED. FABRICATED A NEW FLOOR PANEL IAW SREO B757-5320-9692K.
- [SDR IPXA2018110215569](https://openairdocs.org/sdr/IPXA2018110215569.md): Floorboard · delaminated · Oct 9, 2018 · N404UP · Boeing 75724APF · Fuselage Floor Panel
  > MCD FLOOR PANEL 232XDF WAS DELAMINATED. FABRICATED A NEW FLOOR PANEL IAW SREO B757-5320-9692K.
- [SDR IPXA201811025568](https://openairdocs.org/sdr/IPXA201811025568.md): Floor Panel · delaminated · Oct 9, 2018 · N404UP · Boeing 75724APF · Fuselage Floor Panel
  > MCD FLOOR PANEL 232XCF WAS DELAMINATED. FABRICATED A NEW FLOOR PANEL IAW SREO B757-5320-9692K.

Next page: https://openairdocs.org/aircraft/N404UP/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 n_number = 'N404UP' AND registry_match = 'registration'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/aircraft/N404UP/reports

---
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