# Service difficulty reports: N504US, cancelled May 31, 2017 A list on [N504US, cancelled May 31, 2017](https://openairdocs.org/deregistered/N504US-2017-05-31.md). Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Newest first. - [SDR NWAA073365504](https://openairdocs.org/sdr/NWAA073365504.md): Battery Pack · inoperative · Oct 3, 2007 · N504US · Boeing 757251 · Emergency Lighting > DURING OVERNIGHT LINE CHECK, FOUND EMERGENCY LIGHT ON OUTSIDE OF A/C AT DOOR 2 RIGHT INOP. MAINTENANCE REMOVED AND REPLACED BATTERY PACK. OPERATIONAL CHECKED GOOD AND AIRCRAFT WAS RETURNED TO SERVICE. - [SDR 0602115504](https://openairdocs.org/sdr/0602115504.md): Power Supply · defective · Oct 3, 2006 · N504US · Boeing 757251 · Emergency Lighting > DURING OVERNIGHT MAINTENANCE FLOOR PROXIMITY LIGHTS DEFECTIVE FROM LAV D TO GALLEY G4B. MAINTENANCE REMOVED AND REPLACED POWER SUPPLY. OPERATIONAL CHECKED GOOD. A/C RETURNED TO SERVICE. - [SDR 0200085504](https://openairdocs.org/sdr/0200085504.md): Crease Beam · corroded · Jan 2, 2002 · N504US · Boeing 757251 · Fuselage Main, Frame > During "H" check found corrosion on floor to fuselage crease beam at BS 1636 RBL 60. Repaired per EA 55-187743. - [SDR 0200075504](https://openairdocs.org/sdr/0200075504.md): Web · cracked · Jan 2, 2002 · N504US · Boeing 757251 · Fuselage Main, Frame > During "H" check found crack in support intercostal web at BS 660 stringer 11L. Repaired per EA 55-187744. - [SDR 0200165504](https://openairdocs.org/sdr/0200165504.md): Support · corroded · Jan 1, 2002 · N504US · Boeing 757251 · Fuselage Main, Floor Beam > During "H" check found corrosion on seat track support at BS 400 RBL 25. Repaired per EA 55-187555. - [SDR 0105165504](https://openairdocs.org/sdr/0105165504.md): Keelbeam · corroded · Dec 31, 2001 · N504US · Boeing 757251 · Fuselage Main, Keel > During "H" check found corrosion on keel beam between BS 673-680. Repaired per EA 55-187742. - [SDR 0105175504](https://openairdocs.org/sdr/0105175504.md): Floorbeam · cracked · Dec 17, 2001 · N504US · Boeing 757251 · Fuselage Main, Floor Beam > DURING "H" CHECK FOUND CRACK IN FLOORBEAM UPPER CAP AT BS 700 LBL 25. REPAIRED PER EA 55-187429. - [SDR 9901895504](https://openairdocs.org/sdr/9901895504.md): Battery Pack · discharged · Apr 30, 1999 · N504US · Boeing 757251 · Emergency Lighting > DURING SCHEDULED MAINTENANCE CHECKS, ESCAPE PATH LIGHTING AT ROWS 34 AND 38 WERE FOUND INOPERATIVE. MAINTENANCE REPLACED THE ASSOCIATED BATTERY/CHARGER PACK WITH SERVICEABLE UNIT. - [SDR 9723185504](https://openairdocs.org/sdr/9723185504.md): Transmitter · malfunctioned · Dec 4, 1997 · N504US · Boeing 757251 · Trailing Flap Position Indicating System > AT FL370, RECEIVED TRAILING EDGE FLAP DISAGREE WARNING AND TRAILING EDGE FLAP ASYMMETRY EICAS MESSAGE. CREW PERFORMED COM PROCEDURE AND A DECISION WAS MADE TO DIVERT TO MSP FOR BETTER RUNWAY CONDITIONS. FLIGHT LANDED IN MSP WITHOUT INCIDENT. MAINTENANCE REP - [SDR 9721535504](https://openairdocs.org/sdr/9721535504.md): Transmitter · malfunctioned · Nov 15, 1997 · N504US · Boeing 757251 · Leading Edge Slat Position Indicating System > SLAT ASYMMETRY MESSAGE DURING CLIMB WITH NO SLAT MOVEMENT SELECTED. COMPLIED WITH COM PROCEDURES. NO FURTHER PROBLEMS NOTED. CREW DECLARED AN EMERGENCY INTO MKE, AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED THE LEFT OUTBOARD SLAT DRIVE TRANSMITTE - [SDR 9717755504](https://openairdocs.org/sdr/9717755504.md): Egt Indication · malfunctioned · Sep 20, 1997 · N504US · Boeing 757251 · Engine EGT/TIT Indicating System > TAKEOFF WAS ABORTED DUE TO NR 2 ENGINE EGT REACHING LIMITS. MAINTENANCE INSPECTED ENGINE PER MAINTENANCE MANUAL 71-00-00, FIG 308, PG 221 TO 223 AND FOUND NO DISCREPANCIES. - [SDR 9709995504](https://openairdocs.org/sdr/9709995504.md): Skin · cracked · May 15, 1997 · N504US · Boeing 757251 · Nacelle/Pylon, Plate/Skin > DURING L-CHECK, FOUND CRACK IN NR 2 PYLON EXTERIOR SKIN AT THE OUTBOARD SIDE FORWARD TORQUE BOX LIGHTENING HOLE UPPER FORWARD CORNER. REPAIRED PER EA 55-150542. - [SDR 9705845504](https://openairdocs.org/sdr/9705845504.md): Electronic Unit · malfunctioned · Mar 17, 1997 · N504US · Boeing 727251 · Trailing Edge Flap Control System > DURING FLAP RETRACTION ON DEPARTURE WITH FLAP HANDLE IN UP POSITION, FLAP GAUGE INDICATED L/E FLAPS IN T/O POSITION. STATUS MESSAGE FLAP/SLAT ELEC, T/E SLAP ASYM APPEARED. AIRCRAFT DIVERTED TO MSP AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND TRAILING EDGE - [SDR 9625415504](https://openairdocs.org/sdr/9625415504.md): Warning Bell · sounded · Nov 26, 1996 · N504US · Boeing 757251 · Central Warning > DURING TAKEOFF ROTATION, WARNING BELL SOUNDED WITH NO LIGHT INDICATION. AIRCRAFT RETURNED TO TPA AND LANDED WITHOUT INCIDENT. MAINTENANCE PERFORMED AURAL WARNING TEST, CHECKED OK. - [SDR 9621085504](https://openairdocs.org/sdr/9621085504.md): Oil Press Valve · malfunctioned · Oct 4, 1996 · N504US · Boeing 757251 · APU Oil System > DURING CRUISE FLIGHT, APU OIL LOW LIGHT ANNUNCIATED. FLIGHT CREW SHUT DOWN APU AND DIVERTED TO LAS DUE TO NR 2 ENGINE IDG ON MEL. MAINTENANCE REPLACED APU OIL PRESSURE REGULATING VALVE, SERVICED APU WITH OIL, GROUND RAN APU FOR 3.5 HOURS AND NO OIL LOSS NOTE - [SDR 9614275504](https://openairdocs.org/sdr/9614275504.md): Transceiver · malfunctioned · Jun 29, 1996 · N504US · Boeing 727251 · Weather Radar System > DURING CRUISE, WEATHER RADAR DISPLAY ERRATIC AND UNRELIABLE. AIRCRAFT DIVERTED TO DTW AND LANDED WITHOUT INCIDENT. REPLACED THE LEFT TRANSCEIVER, PERFORMED MAINTENANCE BITE TEST, CHECKED OK. - [SDR 9611285504](https://openairdocs.org/sdr/9611285504.md): Oil Press Ind · malfunctioned · May 22, 1996 · N504US · Boeing 757251 · Engine Oil Pressure > DURING TAXI OUT, NR 2 ENGINE OIL PRESSURE DROPPED TO 14 PSI. NR 2 ENGINE WAS SHUT DOWN AND AIRCRAFT RETURNED TO GATE. MAINTENANCE PERSONNEL INSPECTED NR 2 ENGINE, NO SIGNS OF OIL LEAKAGE NOTED. BOTH ENGINES STARTED AND OPERATING PARAMETERS CHECKED GOOD. - [SDR 9607725504](https://openairdocs.org/sdr/9607725504.md): Longeron · cracked · Mar 29, 1996 · N504US · Boeing 757251 · Fuselage Main, Longeron/Stringer > DURING T-CHECK, FOUND A CRACK IN THE FLOOR SUPPORT STRINGER AT FS 1543 AT RBL 3. REPAIRED STRINGER (P/N 146N5444) PER EA 55-102076. - [SDR 9607495504](https://openairdocs.org/sdr/9607495504.md): Chord · corroded · Mar 25, 1996 · N504US · Boeing 757251 · Fuselage Miscellaneous Structure > DURING T-CHECK, FOUND CORROSION ON THE AFT CARGO DOOR LOWER SILL INNER CHORD; BS 1380 - 1440. REPAIRED CHORD (P/N 146N8522-52) PER EA 55-99517. - [SDR 9607465504](https://openairdocs.org/sdr/9607465504.md): Longeron · corroded · Mar 21, 1996 · N504US · Boeing 757251 · Fuselage Main, Longeron/Stringer > DURING T-CHECK, FOUND CORROSION ON THE BS 1520 AFT CARGO FLOOR STRINGERS AT RBL 3 AND RBL 7. REPAIRED STRINGERS (P/N 146N5444) PER EA 55-102072. - [SDR 9607125504](https://openairdocs.org/sdr/9607125504.md): Fitting · corroded · Mar 21, 1996 · N504US · Boeing 757251 · Fuselage Miscellaneous Structure > DURING T-CHECK, FOUND CORROSION ON THE AFT CARGO THRESHOLD SUPPORT CASTING BS 1383. REPLACED FITTING. - [SDR 9519525504](https://openairdocs.org/sdr/9519525504.md): Battery · discharged · Dec 4, 1995 · N504US · Boeing 757251 · Emergency Lighting > DURING LINE CHECK, FOUND EMERGENCY LIGHTS L25, L31, L42, L33, AND L589 INOPERATIVE. REPLACED BATTERY IN M731 POWER SUPPLY AND OPERATIONAL CHECK NORMAL. - [SDR 9503995504](https://openairdocs.org/sdr/9503995504.md): Acm · malfunctioned · Mar 14, 1995 · N504US · Boeing 757251 · Cabin Cooling System > TAKEOFF WAS ABORTED AT 50 KTS DUE TO LOUD WHINE IN THE COCKPIT. COCKPIT TEMPERATURE WAS 85 DEGREES, WITH LEFT AIR CYCLE MACHINE MALFUNCTION. PLACARDED LEFT PACK INOPERABLE PER MEL 21-51-1. REPAIRED LEFT AIR CYCLE MACHINE PER MM 21-51-03, P. 201 IN BOS, SYST ## 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 = 'N504US' AND deregistration_id = 'N504US-2017-05-31' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/deregistered/N504US-2017-05-31/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.