N421UP

Service difficulty reports · 311

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

Query with SQL
duckdb -csv -c "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 = 'N421UP' AND registry_match = 'registration'
  ORDER BY difficulty_date DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

SDR IPXA2025122272606Computer · faultedAIR TURN BACK, DURING CLIMB OUT THROUGH 14,000€™ OBSERVED THREE SIMULTANEOUS ADVISORY MESSAGES RESULTED IN DIVERSION/RETURN SDF. "GRND PRX SYST" "TERR SYST" "WINDSHEAR SYST". ++REPLACED EGPWS COMPUTER PER AMM 34-46-01-404-005. VERIFIED SOFTWARE PER AMM SOFTWADec 21, 2025 · N421UP · Boeing 75724APF · Independent Position Determining SystemSDR IPXA2025121861336Fuel Tank · inoperative**SUPPLEMENTAL SDR** DURING FLIGHT FUEL TRANSFERRED FROM RH TANK TO CENTER TANK. LOOKS ABOUT 200 LBS PER HOUR. REMOVED AND REPLACED RH DEFUEL VALVE REF. UPS B757 AMM 28-26-01-004-144 AND 28-26-01-404-145. COMPLETED DEFUEL VALUE INSTALLATION WITH ADJUSTMENT LDec 16, 2025 · N421UP · Boeing 75724APF · Aircraft Fuel Distribution SystemSDR IPXA2025121661336Fuel Sys · out of balanceDURING FLIGHT FUEL TRANSFERRED FROM RH TANK TO CENTER TANK. LOOKS ABOUT 200 LBS PER HOUR. NO EXTERNAL LEAKS FOUND, OBSERVED FUEL TRANSFERS FROM RIGHT TO CENTER. DEFERRED PER AMM 28-21-00-702-001 B(2)Dec 16, 2025 · N421UP · Boeing 75724APF · Aircraft Fuel Distribution SystemSDR IPXA2025121759362Fuel Sys · malfunctionedLANDED WITH NO CENTER FUEL. 10.8 ON SHUTDOWN. ADDED 69 GALS 400 LBS AND LT 9.1 C2.4 R7.8. LEAKING FUEL FROM RT TANK TO CENTER TANK. PERFORMED TANK TO TANK TRANSFER TO TRANSFER FUEL OUT OF THE CENTER IAW AMM 28-26-00-652-076. LEFT TANK IS AT 9.4, CENTER TANK ADec 16, 2025 · N421UP · Boeing 75724APF · Fuel StorageSDR IPXA2025082767336Seat Track · damagedCARGO LOCK AT POSITION 39 MAIN CARGO DECK CANNOT BE SECURED. ACCOMPLISHED PERMANENT REPAIR PER EO-93551-REQ2.Apr 26, 2025 · N421UP · Boeing 75724APF · Fuselage, Seat/Cargo Attach FittingsSDR IPXA2025022687669Floor Panel · puncturedSMALL PUNCTURE IN FLOOR OF LOWER AFT CARGO COMPARTMENT COMPLETED PERMANENT REPAIR PER SREO-3220-REQ002 APPS BJan 11, 2024 · N421UP · Boeing 75724APF · Fuselage Floor PanelSDR IPXA2025022687637Floor Panel · puncturedLOWER FWD CARGO COMPARTMENT SMALL PUNCTURE IN FLOOR ACCOMPLISHED PERMANENT REPAIR IAW SREO-3220-REQ002 STEP 2.Jan 11, 2024 · N421UP · Boeing 75724APF · Fuselage Floor PanelSDR IPXA2024011287637Unknown · unknown*SDR FILED OPEN* LOWER FWD CARGO COMPARTMENT SMALL PUNCTURE IN FLOOR**SM10/LMX0*** DEFERRED PER EO SREO-3220.Jan 11, 2024 · N421UP · Boeing 75724APF · Fuselage Floor PanelSDR IPXA2024011287669Unknown · unknown*SDR FILED OPEN* SMALL PUNCTURE IN FLOOR OF LOWER AFT CARGO COMPARTMENT***SM10/LMX0*** DEFERRED PER EO SREO-3220.Jan 11, 2024 · N421UP · Boeing 75724APF · Fuselage Floor PanelSDR IPXA2022052182319Warning Message · false activationINSPECTION TYPE:L HD, EMERGENCY DECLARED*** "L" HDY QTY EICAS L HYD LEAK NDOWN TO 0.28 HYD. QTY.R&RED "O"RING ON LH. T/R ISO. VALVE CONTROL LINE UNION C/W REF TO 757 MM 78-34-05-(401) -404-022-P00. SERVICED LH. HYD. SYS. PER AMM 12-12-01-613-015. NO LEAKS NOTMay 20, 2022 · N421UP · Boeing 75724APF · Hydraulic System, MainSDR IPXA2022042381411Frame · dentedINSPECTION TYPE:SEG1AFT PIT FRAME UPPER J ANGLE DENTED AT STA 1260 STR 26LREPAIR PER UPS RCD 251322 AND SRM 53-00-07-2R-6 DETAIL VIApr 23, 2022 · N421UP · Boeing 75724APF · Fuselage Main, StructureSDR IPXA2022041881284Frame · crackedINSPECTION TYPE:SEG1DENT AT AFT CARGO FRAME STA 1340, S-26RACCOMPLISHED REPAIR IAW UPS RCD 251327 AND SRM 53-00-07-2R-5 DETAIL I, PER SRM 53-60-07-02RApr 8, 2022 · N421UP · Boeing 75724APF · Fuselage Main, StructureSDR IPXA2022042581462Fitting · corrodedINSPECTION TYPE:SEG1CORROSION UNDER BONDING STRAP TERMINAL END ON LH AILERON O/B HINGE SUPPORT FITTINGREPAIRED PER UPS EO B757-5750-83478-A AND VT MAE EA 757-5751-A2896 REV -Apr 7, 2022 · N421UP · Boeing 75724APF · AileronsSDR IPXA2022041881283Frame · dentedINSPECTION TYPE:SEG1FRAME AT STA 1560, HAS 2 DENTS ON INNER CHORD, O/B OF S-26RACCOMPLISHED REPAIR IAW UPS RCD 251229 AND SRM 53-00-07-2R-5 DETAIL I, PER SRM 53-60-07-02RApr 7, 2022 · N421UP · Boeing 75724APF · Fuselage Main, StructureSDR IPXA2022041881282Frame · dentedINSPECTION TYPE:SEG1FRAME AT STA 1600, HAS A DENT AT S-25RACCOMPLISHED REPAIR IAW UPS RCD 251228 AND SRM 53-00-07-2R-5 DETAIL III, PER SRM 53-60-07-02RApr 7, 2022 · N421UP · Boeing 75724APF · Fuselage Main, StructureSDR IPXA2020073058411Acm · seizedAT FL 370, RECEIVED A CABIN ALT WARNING. LT PACK OFF, IN AUTO 2. PRESSURIZATION WAS ABOVE 10,000 FT. DECLARED EMERGENCY, LANDED UNEVENTFULLY. ACCOMPLISHED DMP 21-51-1. RT ACM FOUND SEIZED WITH DEBRIS. REMOVED IAW AMM 21-51-03-004-001. ALSO FOUND WATER NOJul 28, 2020 · N421UP · Boeing 75724APF · Cabin Cooling SystemSDR IPXA2020042054375Transition Panel · corrodedINSPECTION TYPE:C CKAFT CARGO L/H TRANSITION PANEL HAS CORROSION STA 1380REPLACED AND REPAIREDApr 18, 2020 · N421UP · Boeing 75724APF · Fuselage Miscellaneous StructureSDR IPXA2020041554225Floor Panel · damagedINSPECTION TYPE:SEG4MAIN CARGO COMPARTMENT FLOOR PANEL 242XAC DAMAGEDFABBED PANEL 242XAC FROM 5024N400001SS-G BATCH # 3525521 PER SREO B757-5320-9692-KApr 14, 2020 · N421UP · Boeing 75724APF · Fuselage Floor PanelSDR IPXA2019090646402Target · bentINSPECTION TYPE:N/A **SUPPLEMENTA SDR** L FWD ENT DOOR EICAS ON LANDING. DEFERED I/A/W MEL 52-71-1 PLACARD INSTALLED ORDERED SENSOR, PROX ON REC 283006A. FOUND CREW DOOR SUPPORT BRACKET TARGET BENT, UNEVEN GAP BETWEEN TARGET & SENSOR. R/R TARGET & SENSOR PER MSep 5, 2019 · N421UP · Boeing 75724APF · Door Warning SystemSDR IPXA2019071844597Striker · bentINSPECTION TYPE:N/A ON BLOCKOUT, EICAS MESSAGE "L FWD ENT DOOR" DISPLAYED. FOUND DOOR STRIKER ON PROX SWITCH BENT ALIGNED STRIKER. OPS CK'D PER MM 52-71-00-400-802.Jul 17, 2019 · N421UP · Boeing 75724APF · Door Warning SystemSDR IPXA2018122427160Bulb · inoperativeEMERGENCY LIGHT HAD ELEVEN BULBS INOPERATIVE. REPLACED THE BULBS IAW AMM 33-51-01-2.Dec 21, 2018 · N421UP · Boeing 75724APF · Emergency LightingSDR IPXA2018052329918Fan · failedFUMES IN THE COCKPIT DURING CRUISE. FOUND THE COCKPIT NR 1 EQUIPMENT SUPPLY FAN TO BE AT FAULT. REPLACED THE COCKPIT EQUIPMENT COOLING SUPPLY FAN IAW AMM 21-58-23-014-005 & 21-58-23-414-030.May 22, 2018 · N421UP · Boeing 75724APF · Air Distribution SystemSDR IPXA2018042718974Floorboard · damagedINSPECTION TYPE: SEG3, MAIN DECK FLOORBOARD 221XEF WAS FOUND DAMAGED. FABRICATED A NEW FLOORBOARD IAW SREO B757-5320-9692-K.Apr 26, 2018 · N421UP · Boeing 75724APF · Fuselage Floor PanelSDR IPXA2018042718973Floorboard · damagedINSPECTION TYPE: SEG3, MAIN DECK FLOORBOARD 231XEF WAS FOUND DAMAGED. FABRICATED A NEW FLOORBOARD IAW SREO B 757-5320-9692-K.Apr 26, 2018 · N421UP · Boeing 75724APF · Fuselage Floor PanelSDR IPXA2018042718972Floorboard · damagedINSPECTION TYPE: SEG3, MAIN DECK FLOORBOARD 232XEF WAS FOUND DAMAGED. FABRICATED A NEW FLOORBOARD IAW SREO B757-5320-9692-KApr 26, 2018 · N421UP · Boeing 75724APF · Fuselage Floor PanelSDR IPXA2018042718971Floorboard · damagedINSPECTION TYPE: SEG3, MAIN DECK FLOORBOARD 252XEF WAS FOUND DAMAGED. FABRICATED A NEW FLOORBOARD IAW SREO B757-5320-9692-K.Apr 26, 2018 · N421UP · Boeing 75724APF · Fuselage Floor PanelSDR IPXA2018042718969Floorboard · damagedINSPECTION TYPE: SEG3, MAIN DECK FLOORBOARD 232XDF WAS FOUND DAMAGED. FABRICATED A NEW FLOORBOARD IAW SREO B757-532-9692-K.Apr 26, 2018 · N421UP · Boeing 75724APF · Fuselage Floor PanelSDR IPXA2018042718968Floorboard · damagedINSPECTION TYPE: SEG3, MAIN DECK FLOORBOARD 222XBF WAS FOUND DAMAGED. FABRICATED A NEW FLOORBOARD IAW SREO B757-5320-9692-5.Apr 26, 2018 · N421UP · Boeing 75724APF · Fuselage Floor PanelSDR IPXA2018042718984Floorboard · damagedINSPECTION TYPE: SEG3, MAIN DECK FLOORBOARD 221XAF WAS FOUND DAMAGED IAW SREO B 757-5320-96-92-K.Apr 26, 2018 · N421UP · Boeing 75724APF · Fuselage Floor PanelSDR IPXA2018042718983Floorboard · damagedINSPECTION TYPE: SEG3, MAIN DECK FLOORBOARD 232XMF WAS FOUND DAMAGED. FABRICATED A NEW FLOORBOARD.Apr 26, 2018 · N421UP · Boeing 75724APF · Fuselage Floor PanelSDR IPXA2018042718982Floorboard · delaminatedINSPECTION TYPE: SEG3, FLOORBOARD 212XAF DELAMINATED. FABRICATED A NEW FLOORBOARD IAW SREO B757-532D-9692-K.Apr 26, 2018 · N421UP · Boeing 75724APF · Fuselage Floor PanelSDR IPXA2018042718981Floor Panel · delaminatedINSPECTION TYPE: SEG3, FLOOR PANEL 211XAF FOUND DELAMINATED. THE FLOOR PANEL WAS FABRICATED IAW SREO B757-5320-9692K.Apr 26, 2018 · N421UP · Boeing 75724APF · Fuselage Floor PanelSDR IPXA2018042718980Floorboard · damagedINSPECTION TYPE: SEG3, MAIN DECK FLOORBOARD 232XCF WAS FOUND DAMAGED. FABRICATED A NEW FLOORBOARD IAW SRED B757-5320-9692-K.Apr 26, 2018 · N421UP · Boeing 75724APF · Fuselage Floor PanelSDR IPXA2018042718979Floorboard · damagedINSPECTION TYPE: SEG3, MAIN DECK FLOORBOARD 231XJF WAS FOUND DAMAGED. FABRICATED A NEW FLOORBOARD IAW SREO B757-53209692K.Apr 26, 2018 · N421UP · Boeing 75724APF · Fuselage Floor PanelSDR IPXA2018042718978Floorboard · damagedINSPECTION TYPE: SEG3, MAIN DECK FLOORBOARD 231FF WAS FOUND DAMAGED. FABRICATED A NEW FLOORBOARD IAW SRED B757-5320-9692-K.Apr 26, 2018 · N421UP · Boeing 75724APF · Fuselage Floor PanelSDR IPXA2018042718977Floorboard · damagedINSPECTION TYPE: SEG3, MAIN DECK FLOORBOARD 232XGF WAS FOUND DAMAGED. FABRICATED A NEW FLOORBOARD IAW SREO B757-53-20-9692-IL.Apr 26, 2018 · N421UP · Boeing 75724APF · Fuselage Floor PanelSDR IPXA2018042718975Floorboard · damagedINSPECTION TYPE: SEG3, MAIN DECK FLOORBOARD 231XQF WAS FOUND DAMAGED. FABARICATED A NEW FLOORBOARD IAW SREO B757-5320-9692-K.Apr 26, 2018 · N421UP · Boeing 75724APF · Fuselage Floor PanelSDR IPXA2018042718986Floorboard · damagedINSPECTION TYPE: SEG3, MAIN DECK FLOORBOARD 222XCF WAS FOUND DAMAGED. FABRICATED A NEW FLOORBOARD IAW SREO B757-5320-9692-K.Apr 26, 2018 · N421UP · Boeing 75724APF · Fuselage Floor PanelSDR IPXA2018042718985Floor Panel · damagedINSPECTION TYPE: SEG3, FLOOR PANEL 221XBF FOUND DAMAGED. FABRICATED A NEW FLOOR PANEL IAW SREO B 757-5320-9692-K.Apr 26, 2018 · N421UP · Boeing 75724APF · Fuselage Floor PanelSDR IPXA2018042718964Floorboard · damagedINSPECTION TYPE: SEG3, MAIN DECK FLOORBOARD 232XFF FOUND DAMAGED. FABRICATED A NEW FLOORBOARD IAW SRE0 B757-5320-9692-K.Apr 26, 2018 · N421UP · Boeing 75724APF · Fuselage Floor PanelSDR IPXA2018042718963Floorboard · damagedINSPECTION TYPE: SEG3, MAIN DECK FLOORBOARD 232XAF FOUND DAMAGED. FABRICATED A NEW FLOORBOARD IAW SREO B757-5320-9692-K.Apr 26, 2018 · N421UP · Boeing 75724APF · Fuselage Floor PanelSDR IPXA2018042718962Floorboard · damagedINSPECTION TYPE: SEG3, MAIN DECK FLOORBOARD 231XAF FOUND DAMAGED IAW SREP B757-5320-9692-K.Apr 26, 2018 · N421UP · Boeing 75724APF · Fuselage Floor PanelSDR IPXA2018042718961Floorboard · damagedINSPECTION TYPE: SEG3, MAIN DECK FLOORBOARD 231BF FOUND DAMAGED IAW SREP B757-5320-9692-K.Apr 26, 2018 · N421UP · Boeing 75724APF · Fuselage Floor PanelSDR IPXA2018042708960Floorboard · damagedINSPECTION TYPE: SEG3, MAIN DECK FLOORBOARD 231XSF FOUND DAMAGED FABRICATED A NEW FLOORBOARD IAW SRE B757-5320-9692-K.Apr 26, 2018 · N421UP · Boeing 75724APF · Fuselage Floor PanelSDR IPXA2018042708958Floorboard · damagedINSPECTION TYPE: SEG3, MAIN DECK FLOORBOARD 232XBF FOUND DAMAGED. FABRICATED A NEW FLOORBOARD IAW SREA B757-5320-9692-K.Apr 26, 2018 · N421UP · Boeing 75724APF · Fuselage Floor PanelSDR IPXA2018042628957Floorboard · damagedINSPECTION TYPE: SEG3, MAIN DECK FLOORBOARD 232XJF DAMAGED. FABRICATED A NEW FLOORBOARD IAW SREO B757-5320-9692-K.Apr 26, 2018 · N421UP · Boeing 75724APF · Fuselage Floor PanelSDR IPXA2018042708990Floor Panel · delaminatedINSPECTION TYPE: SEG 3, FLOOR PANEL 231XDF DELAMINATED. FABRICATED A NEW FLOOR PANEL IAW SREO B757-5320-9692K.Apr 26, 2018 · N421UP · Boeing 75724APF · Fuselage Floor PanelSDR IPXA2018042628989Floor Panel · delaminatedINSPECTION TYPE: SEG 3, FLOOR PANEL 231XGF DELAMINATED. FABRICATED A NEW FLOOR PANEL IAW SREO B757-5320-9692-K.Apr 26, 2018 · N421UP · Boeing 75724APF · Fuselage Floor PanelSDR IPXA2018042708988Floor Panel · damagedINSPECTION TYPE: SEG3, MAIN DECK FLOOR PANEL 222XAF DAMAGED. FABRICATED A NEW FLOOR PANEL IAW SREO B757-5320-9692-K.Apr 26, 2018 · N421UP · Boeing 75724APF · Fuselage Floor PanelSDR IPXA2018042528929Floorboard · damagedINSPECTION TYPE: SEG3, MAIN DECK FLOORBOARD 232HF FOUND DAMAGED. FABRICATED A NEW FLOORBOARD IAW SREO B757-5320-9692-K.Apr 25, 2018 · N421UP · Boeing 75724APF · Fuselage Floor Panel
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