# Service difficulty reports: N420UP

A list on [N420UP](https://openairdocs.org/aircraft/N420UP.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 · 226 reports

- [SDR IPXA2026101214195](https://openairdocs.org/sdr/IPXA2026101214195.md): Fuel Sys · out of balance · Oct 6, 2026 · N420UP · Boeing 75724APF · Fuel Storage
  > RT FUEL TANK 0.5 OR GREATER FUEL LOSS INDICATIONS. FUEL GAUGE INDICATING 500 SPLIT. FUEL FLOW MATCHES. AILERON TRIM 1 DEGREE. FUEL BALANCED ON TKOF. REPEAT ISSUE. PERFORMED REFUEL VALVE LEAK TEST REF MM 28-26-01 NO MIGRATION FOUND.
- [SDR IPXA2026100614195](https://openairdocs.org/sdr/IPXA2026100614195.md): Fuel Sys · out of balance · Oct 6, 2026 · N420UP · Boeing 75724APF · Fuel Storage
  > RT FUEL TANK 0.5 OR GREATER FUEL LOSS INDICATIONS. FUEL GAUGE INDICATING 500 SPLIT. FUEL FLOW MATCHES. AILERON TRIM 1 DEGREE. FUEL BALANCED ON TKOF. REPEAT ISSUE. DEFERRED FUEL IMBALANCE IAW AMM 28-21-00-702-001, PAR. B (2).
- [SDR IPXA2025103155348](https://openairdocs.org/sdr/IPXA2025103155348.md): Window · cracked · Oct 25, 2025 · N420UP · Boeing 75724APF · Flight Compartment Windows
  > 1R WINDOW CRACKED IN CRUISE FLT AT FL390. C/W STEPS OF R1 WIINDOW INSTALL IAW AMM 56-11-01. OPS AND LEAK CHECK GOOD.
- [SDR IPXA2025102755348](https://openairdocs.org/sdr/IPXA2025102755348.md): Window · cracked · Oct 25, 2025 · N420UP · Boeing 75724APF · Flight Compartment Windows
  > DIVERSION, 1R WINDOW CRACKED IN CRUISE FLT AT FL390. OPEN
- [SDR IPXA2025020635608](https://openairdocs.org/sdr/IPXA2025020635608.md): Pseu · faulted · Feb 2, 2025 · N420UP · Boeing 75724APF · Landing Gear Position and Warning
  > AIR TURN BACK* FAULT- BTW ON 2-2-25 @ 1430Z, BACK TO PNS BROUGHT A/C OUT OF MTC FOR GEAR CHANGE. ON CLIMBOUT WITH GEAR HANDLE IN OFF POSITION, HAD HALF OF LEFT GEAR LIGHT ILLUMINATED, LE. INSTALLED ROBED PSEU OPS CHECK GOOD IAW AMM 32-09-04-404-009. INSTALLED
- [SDR IPXA2025013172057](https://openairdocs.org/sdr/IPXA2025013172057.md): Transition Panel · corroded · Jan 13, 2025 · N420UP · Boeing 75724APF · Fuselage Miscellaneous Structure
  > AFT CARGO TRANSITION PANEL (CURRENTLY ON PANEL RACK) HAS CORROSION ON LOWER SURFACE AROUND 24 EA. NUTPLATES. (AREAS CIRCLED IN RED) DOT 142-366. CORROSION WAS REMOVED BY HAND IN 13 AREAS OF THE NUT PLATE.CHECK THE BOUNDARIES IN THE AFFECTED AREAS.DEEPEST THICK
- [SDR IPXA2025012041574](https://openairdocs.org/sdr/IPXA2025012041574.md): Seat Track · corroded · Jan 11, 2025 · N420UP · Boeing 75724APF · Fuselage, Seat/Cargo Attach Fittings
  > SEAT TRACK AT STA 520 LBL 24.75 HAS CORROSION. DOT 142-319. CLEANED AREA IAW SRM 51-10-02. ORIGINAL MATERIAL THICKNESS OF SEAT TRACK CROWN IS, 0.130". A MATERIAL LOSS OF 0.006" WAS NOTED USING ULTRA SONIC, T93968. MAX LOSS ALLOWED IS 0.020". REMAINING THICKNES
- [SDR IPXA2025012041608](https://openairdocs.org/sdr/IPXA2025012041608.md): Floor Panel · corroded · Jan 11, 2025 · N420UP · Boeing 75724APF · Fuselage Floor Panel
  > MAIN CABIN FLOOR DECKING UNDER FLOOR PANEL 231XJF STA 560 TO 620 BTWN LBL 64 AND 45.50 HAS AREAS OF CORROSION. CIRCLED IN RED. DOT 142-320. CLEANED MULTIPLE AREAS IAW SRM 51-10-02. ORIGINAL MATERIAL THICKNESS FOR ALL AREAS IS 0.100". ALL FOUND TO BE IN LIMITS
- [SDR IPXA2025012845154](https://openairdocs.org/sdr/IPXA2025012845154.md): Cover Plate · corroded · Jan 11, 2025 · N420UP · Boeing 75724APF · Fuselage Miscellaneous Structure
  > FLOOR BRACKET BTWN BL-0 AND LBL 8 DENTED AND HAS 8 EA DOME NUTS WITH CORROSION IN AND AROUND HOLES. INSTALLED COVER PLATE IN STA 900 BL, 0 AND 8 E/A DOME NUTS IAW SRM 51-40-02, GOOD ISSUE VOUCHER, DOME NUTS. OSD: 1/29/2025
- [SDR IPXA2025012042686](https://openairdocs.org/sdr/IPXA2025012042686.md): Seat Track · corroded · Jan 11, 2025 · N420UP · Boeing 75724APF · Fuselage, Seat/Cargo Attach Fittings
  > CORROSION AROUND 2 EA RIVETS STA 680 LBL 45.5 SEAT TRACK. REMOVED CORROSION IN TWO POINTS AFTER REWORK:P1) ORIGINAL THICKNESS 0.070'' MATERIAL LOSS 0.003'' MATERIAL REMAINING 0.067''.P2) ORIGINAL THICKNESS 0.070'' MATERIAL LOSS 0.002''MATERIAL TEMAINING 0.068'
- [SDR IPXA2025012844732](https://openairdocs.org/sdr/IPXA2025012844732.md): Seat Track · corroded · Jan 11, 2025 · N420UP · Boeing 75724APF · Fuselage, Seat/Cargo Attach Fittings
  > MAIN CABIN FLOOR STRUCTURE AT STA 1020 TO STA 1040 RBL 45.5 HAS CORROSION AROUND 5 EA. FASTENER HOLES. DOT 142-328. EVALUATED REWORK FIVE PAINTS IN MAIN CABIN FLOOR STRUCTURE AT STA 1020 TO STA 1040 RBL 45.5. MATERIAL THICKNESS 0.090''AFTER REWORK, P1) MATERIA
- [SDR IPXA2025012042868](https://openairdocs.org/sdr/IPXA2025012042868.md): Floorbeam · corroded · Jan 11, 2025 · N420UP · Boeing 75724APF · Fuselage Main, Floor Beam
  > FLOOR BEAM STA 560 BTWN BL-0 AND LBL 24.75 IS CORRODED. DOT 142-326. EVALUATED DAMAGE IN FLOOR BEAM STA 560 BTWN BL-0 AND LBL24.75.:P1)ORIGINAL THICKNISS 0.220'' MATERIAL LOSS 0.010'' MAXIMUN ALLOWABLE 0.022'' MATERIAL REMANING 0.210''.P2) ORIGINAL THICKNISS
- [SDR IPXA2025012041655](https://openairdocs.org/sdr/IPXA2025012041655.md): Shear Web · corroded · Jan 11, 2025 · N420UP · Boeing 75724APF · Fuselage Miscellaneous Structure
  > MAIN CABIN DECKING STA 620 TO 660 BTWN LBL 64 AND LBL 45.5 HAS NUMEROUS AREAS OF CORROSION. CIRCLED IN RED. DOT 142-322. ORIGINAL MATERIAL 0.063" AFTER REWORK 0.059", MATERIAL REMOVED 0.004" FOUND TO BE IN LIMITS PER SRM 53-30-15-1A-3 DETAIL II. TOOL T17449.
- [SDR IPXA2025012042718](https://openairdocs.org/sdr/IPXA2025012042718.md): Seat Track · corroded · Jan 11, 2025 · N420UP · Boeing 75724APF · Fuselage, Seat/Cargo Attach Fittings
  > SEAT TRACK AT STA 600 RBL 64 IS CORRODED ON INSIDE OF TRACK. DOT 142-324. RESTORED SURFACE PROTECTION IAW.SRM 51-20-01 AMM 51-21-15. MATERIAL USED ALODINE P/N ALODINE1132 BATCH 0004336881. PRIMER P/N 02-013-8 BATCH 4263196, WHITE P/N PG6-W2K4Q BATCH 4340857 AN
- [SDR IPXA2025012042799](https://openairdocs.org/sdr/IPXA2025012042799.md): Floorbeam · corroded · Jan 11, 2025 · N420UP · Boeing 75724APF · Fuselage Main, Floor Beam
  > FLOOR BEAM STA 560 BTWN RBL 45.5 AND RBL 24.75 IS CORRODED. DOT 142-325. VERIFIED EVALUATED DAMAGE IN FLOOR BEAM STA 560 BTWN RBL 45.5 AND 24.75 FOUND TO BE WITHIN LIMITS. GIVEN OK TO RESTORE SURFACE PROTECTION. RESTORED SURFACE PROTECTION IAW.SRM 51-20-01 AN
- [SDR IPXA2025012041370](https://openairdocs.org/sdr/IPXA2025012041370.md): Seat Track · corroded · Jan 11, 2025 · N420UP · Boeing 75724APF · Fuselage, Seat/Cargo Attach Fittings
  > FLOOR STRUCTURE AT STA 440 LBL 24.75 UNDER FLOOR PANEL 231XBF HAS AREA OF CORROSION. DOT 142-314. RESTORED SURFACE PROTECTION IAW SRM 51-20-01 AND TOP COAT IAW AMM 51-21-15. MATERIALS USED.
- [SDR IPXA2025012041456](https://openairdocs.org/sdr/IPXA2025012041456.md): Seat Track · corroded · Jan 11, 2025 · N420UP · Boeing 75724APF · Fuselage, Seat/Cargo Attach Fittings
  > SEAT TRACK AT STA 500 LBL 45.5 IS CORRODED. DOT 142-316. CLEANED AREA IAW SRM 51-10-02. ORIGINAL MATERIAL THICKNESS OF SEAT TRACK CROWN IS, 0.130". A MATERIAL LOSS OF 0.006" WAS NOTED USING ULTRA SONIC, T93968. MAX LOSS ALLOWED IS 0.020". REMAINING THICKNESS I
- [SDR IPXA2025012041468](https://openairdocs.org/sdr/IPXA2025012041468.md): Floor Panel · corroded · Jan 11, 2025 · N420UP · Boeing 75724APF · Fuselage Floor Panel
  > MAIN CABIN FLOOR DECKING UNDER FLOOR PANEL 231XFF HAS AREAS OF CORROSION ON DECKING. DOT 142-317. CLEANED MULTIPLE AREAS IAW SRM 51-10-02. ORIGINAL MATERIAL THICKNESS FOR ALL AREAS IS 0.100". ALL FOUND TO BE IN LIMITS IAW SRM 53-10-51-1A-2.
- [SDR IPXA2025012041407](https://openairdocs.org/sdr/IPXA2025012041407.md): Web · corroded · Jan 11, 2025 · N420UP · Boeing 75724APF · Fuselage Miscellaneous Structure
  > MAIN CABIN FLOOR DECKING STA 440 TO 460 BTWN LBL 24.75 TO LBL 65 HAS NUMEROUS AREAS OF CORROSION. (UNDER FLOOR PANEL 221XCF) (CIRCLED IN RED) DOT 142-315. CLEANED MULTIPLE AREAS IAW SRM 51-10-02. ORIGINAL MATERIAL THICKNESS FOR ALL AREAS IS 0.100". ALL FOUND T
- [SDR IPXA2025012404769](https://openairdocs.org/sdr/IPXA2025012404769.md): Deck Plate · corroded · Jan 9, 2025 · N420UP · Boeing 75724APF · Fuselage Main, Structure
  > CORROSION FOUND BOTTOM OF THE FRAME AT STA 1681.80 APPROX 5" LEFT OF RBL 24.75. AREA MARKED IN RED. INSTALLED 1 EA PLATE + 2 FASTENERS PN BACB30NW6K5X BTCH 000349754. IAW SRM 51-40-02-OG.
- [SDR IPXA2025012404348](https://openairdocs.org/sdr/IPXA2025012404348.md): Deck Plate · corroded · Jan 9, 2025 · N420UP · Boeing 75724APF · Fuselage Main, Structure
  > CORROSION FOUND BOTTOM OF THE FRAME AT STA 1681.80 APPROX 13" LEFT OF RBL 24.75. AREA MARKED IN RED. INSTALLED 1 EA PLATE + 2 FASTENERS PN BACB30NW6K5X BTCH 000349754. IAW SRM 51-40-02-OG.
- [SDR IPXA2025012004883](https://openairdocs.org/sdr/IPXA2025012004883.md): Deck Plate · corroded · Jan 9, 2025 · N420UP · Boeing 75724APF · Fuselage Main, Structure
  > FAULT: CORROSION FOUND ON SURFACE OF THE DECK PLATE AROUND A FASTENER HOLE AT STA 1681.80 APPROX 5.75" LEFT OF LBL 24.75. AREA MARKED IN RED. INSTALLED 1 PLATE + 2 EA FASTENERS REMOVED FOR FOM IAW SRM 51-40-02 OG. FASTENER PN BACB30NW6K5 BTCH 0004349754.
- [SDR IPXA2025012005151](https://openairdocs.org/sdr/IPXA2025012005151.md): Deck Plate · corroded · Jan 9, 2025 · N420UP · Boeing 75724APF · Fuselage Main, Structure
  > CORROSION FOUND AROUND 3EA FASTENERS ON THE TOP OF THE DECK PLATE AT STA 1701, RBL 24.75. AREA MARKED IN RED. INSTALLED 3 FASTENERES IAW SRM 51-40-02-OG. PN BACB30NW6K8X BTCH 0004346844. REQUET OK TO RESTORE SUFACE PROTECTION.
- [SDR IPXA2025012005950](https://openairdocs.org/sdr/IPXA2025012005950.md): Seat Track · corroded · Jan 9, 2025 · N420UP · Boeing 75724APF · Fuselage, Seat/Cargo Attach Fittings
  > CORROSION FOUND ON TOP OF THE SEAT TRACK FLANGE AROUND 2EA ATTACHING FASTENERS AT STA 1681.80 RBL 45.50. AREA MARKED IN RED. INSTALLED 2 FASTENERES IAW SRM 51-40-02-OG. PN BACB30NY6K8X BTCH 0004346844. REQUET OK TO RESTORE SUFACE PROTECTION.
- [SDR IPXA2025012089351](https://openairdocs.org/sdr/IPXA2025012089351.md): Seat Track · corroded · Jan 8, 2025 · N420UP · Boeing 75724APF · Fuselage, Seat/Cargo Attach Fittings
  > THE SEAT TRACK FLANGE AT BL-0 STA 1681.80, HAS PITTING CORROSION AROUND THE ATTACHING FASTENERS. ALL DAMAGE MARKED IN RED. INSTALLED 2 FASTENERES IAW SRM 51-40-02-OG. PN BACB30NY6K8X BTCH 0004346844. REQUET OK TO RESTORE SUFACE PROTECTION.
- [SDR IPXA2025012959818](https://openairdocs.org/sdr/IPXA2025012959818.md): Angle · corroded · Jan 7, 2025 · N420UP · Boeing 75724APF · Fuselage Miscellaneous Structure
  > FOUND AN ANGLE CORRODED UNDER DECK PLATE AT STA 1720 RBL 24. INSTALLED 1 NEW ANGLE IAW SRM B757-200 SRM 51-40-02-OG. OSD: 1/30/2025
- [SDR IPXA2025012959971](https://openairdocs.org/sdr/IPXA2025012959971.md): Angle · corroded · Jan 7, 2025 · N420UP · Boeing 75724APF · Fuselage Miscellaneous Structure
  > CORRODED ANGLE FOUND UNDER THE DECK PLATE AT STA 1720 LBL 5. INSTALLED 1 NEW ANGLE IAW SRM B757-200 SRM 51-40-02-OG. PN BACR15GF6D7 BTCH 0003812153. 0.20 LB.. OSD: 1/30/2025
- [SDR IPXA2025013165597](https://openairdocs.org/sdr/IPXA2025013165597.md): Angle · damaged · Jan 7, 2025 · N420UP · Boeing 75724APF · Fuselage Miscellaneous Structure
  > CORRODED ANGLE FOUND UNDER THE DECK PLATE AT STA 1720 RBL 30.
- [SDR IPXA2025012948449](https://openairdocs.org/sdr/IPXA2025012948449.md): Beam · dented · Jan 6, 2025 · N420UP · Boeing 75724APF · Cargo/Baggage Doors
  > FWD CARGO DOOR, AFT LOWER CORNER EDGE BEAM HAS A DENT AND GOUGES. INSTALLED CORNER BRACKET PER SRM 51-40-02. OSD: 1/30/2025
- [SDR IPXA2025020332269](https://openairdocs.org/sdr/IPXA2025020332269.md): Deck Plate · corroded · Jan 4, 2025 · N420UP · Boeing 75724APF · Fuselage Main, Structure
  > MAIN CARGO COMPARTMENT DECK PLATE STA 1720 FROM LBL 22 TO RBL 22 HAS CORROSION. ACCOMPLISH REPAIR PER 757-200PF SRM REV 121 CHAPTER 53-60-51-2R-5, ALTERNATIVE 1 - CUTOUT REPAIR.
- [SDR IPXA2025020332464](https://openairdocs.org/sdr/IPXA2025020332464.md): Angle · corroded · Jan 4, 2025 · N420UP · Boeing 75724APF · Fuselage Miscellaneous Structure
  > MAIN CARGO COMPT. STA 1715 LBL 12 UNDER THE DECK PLATE SUPPORT ANGLE HAS CORROSION. INSTALLED 1 NEW ANGLE IAW SRM B757-200 SRM 51-40-02-OG. PN BACR15GF6D7 BTCH 0003812153. 0.20 LB.
- [SDR IPXA2025013031348](https://openairdocs.org/sdr/IPXA2025013031348.md): Stop · gouged · Jan 4, 2025 · N420UP · Boeing 75724APF · Windshield/Door Rain/Ice Removal
  > RIGHT WINSHIELD WIPER STOP IS GOUGED. ALL WORK ACCOMPLISHED PER IAW EO: EO-92507-REQ 1 AND VT MAE EA 757-3042-27-A3762 REV -.
- [SDR IPXA2025012932464](https://openairdocs.org/sdr/IPXA2025012932464.md): Angle · corroded · Jan 4, 2025 · N420UP · Boeing 75724APF · Fuselage Miscellaneous Structure
  > MAIN CARGO COMPT. STA 1715 LBL 12 UNDER THE DECK PLATE SUPPORT ANGLE HAS CORROSION. OPEN
- [SDR IPXA2025012032339](https://openairdocs.org/sdr/IPXA2025012032339.md): Deck Plate · corroded · Jan 4, 2025 · N420UP · Boeing 75724APF · Fuselage Main, Structure
  > MAIN CARGO COMPT. STA 1690 TO STA 1704 BL 0 DECK PLATE HAS CORROSION. VERIFIED INSTALLED FASTENERS IAW SRM 51-40-02-OG. RESTORED SURFACE PROTECTION IAW SRM 51-20-01 AND TOP COAT IAW AMM 51-21-15. MATERIALS USED.
- [SDR IPXA2025012032269](https://openairdocs.org/sdr/IPXA2025012032269.md): Floor Support · corroded · Jan 4, 2025 · N420UP · Boeing 75724APF · Fuselage Miscellaneous Structure
  > STR MAIN CARGO COMPARTMENT DECK PLATE STA 1720 FROM LBL 22 TO RBL 22 HAS CORROSION REQUEST OK TO REINSTALL 1 SUPPORT ANGLE REMOVED FOR FOM ON STEP 2.
- [SDR IPXA2025012032379](https://openairdocs.org/sdr/IPXA2025012032379.md): Deck Plate · corroded · Jan 4, 2025 · N420UP · Boeing 75724APF · Fuselage Main, Structure
  > MAIN CARGO COMPT. STA 1681.8 BETWEEN BL 0 TO LBL 22 DECK PALTE HAS CORROSION. VERIFIED: PERFORMED OPEN-HOLE HFEC INSP ON ALL FASTENER HOLES IN THE BLENDED REPAIR AREA AT STA 1681.80 BETWEEN BL-0 TO LBL 22. ALL FASTENER HOLES IN THE REPAIR AREA ARE CRACK / DEFE
- [SDR IPXA2025020778667](https://openairdocs.org/sdr/IPXA2025020778667.md): Fitting · gouged · Dec 31, 2024 · N420UP · Boeing 75724APF · Passenger/Crew Doors
  > *SUPPLEMENTAL SDR* FAULT: STR Z-800 CREW DOOR FWD LOWER ROLLER LOCK FITTING IS GOUGED. DOT 142-16. ACCOMPLISHED WORK PER SREO-14721-REQ001. REVIEWED
- [SDR IPXA2025013178700](https://openairdocs.org/sdr/IPXA2025013178700.md): Skin · corroded · Dec 31, 2024 · N420UP · Boeing 75724APF · Fuselage Main, Plate/Skin
  > EXTERIOR SKIN AT STA 1440,S-27R HAS BULDGING SKIN. INSTALLED (1EA) SPLICE PLATE, (1EA) SPLICE CHANNEL AND (1EA) SHIM ASSY, (2EA) ANGLES, (1EA) CLIP, (2EA) TIE DOWN, (1EA) SUPPORT, (1EA) ANGLE, (1EA) PLATE AND (1EA) INTERCOSTAL IAW B757-200PF SRM 51-40-02-0G-
- [SDR IPXA2025010278667](https://openairdocs.org/sdr/IPXA2025010278667.md): Fitting · gouged · Dec 31, 2024 · N420UP · Boeing 75724APF · Passenger/Crew Doors
  > **SDR FILED OPEN** FAULT: STR Z-800 CREW DOOR FWD LOWER ROLLER LOCK FITTING IS GOUGED. DOT 142-16 APPROVED
- [SDR IPXA2023081506852](https://openairdocs.org/sdr/IPXA2023081506852.md): Door · warning message · Aug 6, 2023 · N420UP · Boeing 75724APF · Door Warning System
  > L FWD ENT DOOR EICAS MSG AFTER START R/REPLACED CREW ENTRY DOOR PROX SENSOR PER AMM 52-71-00 NOW ENTRY DOOR INDICATION OK PLACARD REMOVED
- [SDR IPXA2023080606852](https://openairdocs.org/sdr/IPXA2023080606852.md): Unknown · unknown · Aug 6, 2023 · N420UP · Boeing 75724APF · Door Warning System
  > *SDR FILED OPEN* L FWD ENT DOOR EICAS MSG AFTER START DEFERRED PER MEL 52-71-1. DMP C/W.
- [SDR IPXA2023013080343](https://openairdocs.org/sdr/IPXA2023013080343.md): Floorbeam · corroded · Jan 28, 2023 · N420UP · Boeing 75724APF · Fuselage Main, Floor Beam
  > INSPECTION TYPE:SEG3*MAJOR REPAIR* MAIN CARGO COMPARTMENT AT FS 879 RBL 46 TO RBL 53 HAS SURFACE CORROSION.REPAIRED UPPER FLOOR BEAM CHORD AT FS 879 RBL 24 TO RBL 68 PER EA# B757-5310-85731-A STEPS THROUGH 26.
- [SDR IPXA2023012590240](https://openairdocs.org/sdr/IPXA2023012590240.md): Frame · dented · Jan 24, 2023 · N420UP · Boeing 75724APF · Fuselage Main, Frame
  > INSPECTION TYPE:SEG2*MAJOR REPAIR* AFT LOWER CARGO PIT AT FS 1520 1.5" BELOW STR 26R FOUND TWO DENTS ON THE UPPER FLANGEREPAIRED FRAME 1520 IAW SRM 53-60-07-2R-5 AS PER RCD 265735
- [SDR IPXA2023012590256](https://openairdocs.org/sdr/IPXA2023012590256.md): Frame · dented · Jan 13, 2023 · N420UP · Boeing 75724APF · Fuselage Main, Frame
  > INSPECTION TYPE:SEG2*MAJOR REPAIR* LOWER AFT CARGO PIT AT FRAME 1520 HASDENT.REPAIRED PER SRM 53-00-07-2R-5 PER RCD 265737
- [SDR IPXA2023012490221](https://openairdocs.org/sdr/IPXA2023012490221.md): Frame · dented · Jan 13, 2023 · N420UP · Boeing 75724APF · Fuselage Main, Frame
  > INSPECTION TYPE:SEG2, MAJOR REPAIR, BS 1300 FRAME HAS DENTS ON UPPER FLANGE AT STRINGER 26L. REPAIRED THE FRAME IAW SRM 53-00-07-2R-6.
- [SDR IPXA2023012490218](https://openairdocs.org/sdr/IPXA2023012490218.md): None · none · Jan 10, 2023 · N420UP · Boeing 75724APF · Standard Practices/Structures
  > INSPECTION TYPE:SEG2, MAJOR REPAIR, EXISTING REPAIR WAS FOUND AT BS 1460 STRINGER 25L TO 27. LINSPECTED REPAIR IAW EO B757-531027182-C. ORIG SUBMISSION DATE: 1/24/2023
- [SDR IPXA2022121388951](https://openairdocs.org/sdr/IPXA2022121388951.md): Bulb · inoperative · Dec 12, 2022 · N420UP · Boeing 75724APF · Landing Gear Position and Warning
  > EMERGENCY DECLARED, LANDED NORMALLY, NOSE GEAR LIGHT WAS INOPERATIVE. NO ASSOCIATED EICAS MESSAGE. REMOVED AND REPLACED THE NOSE GEAR INDICATOR BULBS IAW AMM 33-13-01-0401. OPS NORMAL.
- [SDR IPXA2021123077400](https://openairdocs.org/sdr/IPXA2021123077400.md): None · none · Dec 29, 2021 · N420UP · Boeing 75724APF · Emergency Lighting
  > INSPECTION TYPE:N/AEMERGENCY LIGHT FAILED TO TESTREPLACED BATTERY PACK REF AMM 33-51-07-902-001 OPS NORMAL
- [SDR IPXA2021052169670](https://openairdocs.org/sdr/IPXA2021052169670.md): Bearing · binding · May 21, 2021 · N420UP · Boeing 75724APF · Passenger/Crew Doors
  > INSPECTION TYPE:NACREW ENTRY DOOR DIFFICULT TO OPEN FROM THE INSIDEREMOVED LOWER PLATE AND ROLLER BEARING ASSY PER MM 52 10 00 825 REMOVED AND REPLACED ROLLER ASSY PER MM 52 10 00 825 007
- [SDR IPXA2021050769122](https://openairdocs.org/sdr/IPXA2021050769122.md): Door · lack of lube · May 5, 2021 · N420UP · Boeing 75724APF · Passenger/Crew Doors
  > INSPECTION TYPE:NACOCKPIT ENTRY DOOR DIFFICULT TO OPEN. STICKS WHEN PULLING INWARDLUBRICATED CREW ENTRY DOOR IAW AMM 12-21-20. OK FOR SERVICE.

Next page: https://openairdocs.org/aircraft/N420UP/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 = 'N420UP' AND registry_match = 'registration'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/aircraft/N420UP/reports

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.