# Service difficulty reports: N204US, cancelled Sep 18, 2007 A list on [N204US, cancelled Sep 18, 2007](https://openairdocs.org/deregistered/N204US-2007-09-18.md). Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Newest first. - [SDR 0101642204](https://openairdocs.org/sdr/0101642204.md): Pump · leaking · May 4, 2001 · N204US · Boeing 727251 · Hydraulic Pump, Auxiliary > DURING CRUISE, BOTH HYDRAULIC B-SYSTEM PUMPS LOW PRESSURE LIGHT ILLUMINATED. ALSO VERIFIED ALL B-SYSTEM FLUID DEPLETED. CONTINUED TO MEM AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED 2 B-SYSTEM HYDRAULIC PUMP. LEAK AND OPERATIONAL CHECK OK. - [SDR 0000252204](https://openairdocs.org/sdr/0000252204.md): Floorbeam · corroded · Mar 4, 2000 · N204US · Boeing 727251 · Fuselage Main, Floor Beam > DURING H-CHECK, FOUND CORROSION ON UPPER FLANGE OF FLOORBEAM UPPER AND LOWER SURFACES. REPAIRED PER EA 22-170785. - [SDR 0000242204](https://openairdocs.org/sdr/0000242204.md): Keelbeam · corroded · Mar 4, 2000 · N204US · Boeing 727251 · Fuselage Main, Keel > DURING H-CHECK, FOUND CORROSION ON LT KEEL BEAM FROM BS 950-1010 WL 156. REPAIRED PER EA 22-170782. - [SDR 0000232204](https://openairdocs.org/sdr/0000232204.md): Floorbeam · corroded · Mar 4, 2000 · N204US · Boeing 727251 · Fuselage Main, Floor Beam > DURING H-CHECK, FOUND CORROSION ON FLOORBEAM UPPER FLANGE, TOP SURFACE BS 1130, LBL 13, LBL 25-45 AND LBL 60 WATERLINE 208. REPAIRED PER EA 22-170783. - [SDR 0000222204](https://openairdocs.org/sdr/0000222204.md): Floorbeam · corroded · Mar 4, 2000 · N204US · Boeing 727251 · Fuselage Main, Floor Beam > DURING H-CHECK, FOUND CORROSION ON UPPER CHORD FLANGE OF THE BS 460 FLOORBEAM, FROM RBL 30 TO RBL 65. REPAIRED PER EA 22-170786. - [SDR 0000212204](https://openairdocs.org/sdr/0000212204.md): Keelbeam · corroded · Mar 4, 2000 · N204US · Boeing 727251 · Fuselage Main, Keel > DURING H-CHECK, FOUND CORROSION ON THE RT KEEL BEAM AFT OF BS 950F. REPAIRED PER EA 22-170781 REV A. - [SDR 0001202204](https://openairdocs.org/sdr/0001202204.md): Floorbeam · corroded · Mar 4, 2000 · N204US · Boeing 727251 · Fuselage Main, Floor Beam > DURING H-CHECK, FOUND CORROSION ON FLOORBEAM UPPER FLANGE. REPAIRED PER EA22-170787. - [SDR 0000652204](https://openairdocs.org/sdr/0000652204.md): Floorbeam · corroded · Mar 4, 2000 · N204US · Boeing 727251 · Fuselage Main, Floor Beam > DURING H-CHECK, FOUND CORROSION ON TOP FLANGE OF FLOORBEAM AT BS 1110, LBL 12 TO RBL 23, WATER LINE 208. REPAIRED PER EA22-170790. - [SDR 9805012204](https://openairdocs.org/sdr/9805012204.md): Battery Pack · discharged · Mar 26, 1998 · N204US · Boeing 727251 · Emergency Lighting > DURING PREFLIGHT, FOUND LEFT CENTER EXTERIOR OVERWING EMERGENCY LIGHT INOPERATIVE. REPLACED BATTERY PACK. OPERATIONAL CHECK OK. - [SDR 9806012204](https://openairdocs.org/sdr/9806012204.md): Heater · inoperative · Mar 19, 1998 · N204US · Boeing 727251 · Pitot/Static Anti-Ice System > AT FL350, THE LEFT STATIC PORT HEATER INDICATION LIGHT ILLUMINATED. RESET CIRCUIT BREAKER, NO HELP. AIRCRAFT DIVERTED TO CLE AND LANDED WITHOUT INCIDENT. REPLACED THE LEFT STATIC PORT HEATER, OPERATIONAL CHECK OK. - [SDR 9719842204](https://openairdocs.org/sdr/9719842204.md): Prbc · malfunctioned · Oct 23, 1997 · N204US · Boeing 727251 · Compressor Bleed Valve > AS TAKEOFF POWER WAS APPLIED, THE CENTER ENGINE EXPERIENCED COMPRESSOR STALLS. CREW ABORTED TAKEOFF AND RETURNED TO GATE. MAINTENANCE REPLACED THE CENTER ENGINE PRESSURE RATIO BLEED CONTOL VALVE. ENGINE OPERATIONAL CHECK OK. AIRCRAFT RETURNED TO SERVICE. - [SDR 9719312204](https://openairdocs.org/sdr/9719312204.md): Battery Pack · discharged · Oct 16, 1997 · N204US · Boeing 727251 · Emergency Lighting > EMERGENCY LIGHTING ON CABIN FLOOR INOPERATIVE. REPLACED BATTERY PACK, OPERATIONAL CHECK OK. - [SDR 9711352204](https://openairdocs.org/sdr/9711352204.md): Out Flow Valve · failed · Jun 4, 1997 · N204US · Boeing 727251 · Pressure Regulator/Outflow Valve > DURING CLIMB, COULD NOT HOLD AND MAINTAIN CABIN PRESSURIZATION. RETURNED TO MSP AND LANDED WITHOUT INCIDENT. REPLACED THE LEFT AND RIGHT OUTFLOW VALVES, RIGHT AIR CYCLE MACHINE, LEFT AND RIGHT 35 DEGREE SWITCHES AND SEALS AT FLOW MULTIPLIER DUCT, AND CHECKED - [SDR 9710042204](https://openairdocs.org/sdr/9710042204.md): Switch · out of adjust · May 21, 1997 · N204US · Boeing 727251 · Leading Edge Slat Position Indicating System > DURING CLIMB ON LEADING EDGE FLAP AND SLAT RETRACTION, NR 1 KRUEGER FLAP INDICATED STILL DOWN. FLIGHT RETURNED TO MSP. PERFORMED FUEL DUMP AND LANDED WITHOUT INCIDENT. MAINTENANCE ADJUSTED NR 1 KRUEGER FLAP SWITCH AND PERFORMED OPERATIONAL CHECK, SYSTEM CHE - [SDR 9705012204](https://openairdocs.org/sdr/9705012204.md): Trim Brake · malfunctioned · Mar 8, 1997 · N204US · Boeing 727251 · Stabilizer Actuator > DURING APPLICATION OF THRUST POWER, TAKEOFF WAS ABORTED TO THE HEAVY STICK PRESSURES. TAKEOFF WAS ABORTED AT 140 KNOTS AND PERFORMED WITH NO INCIDENTS. REPLACED STABILIZER TRIM BRAKE MECHANISM, MAIN STABILIZER TRIM ACTUATOR, AND R27 NOSE UP STABILIZER TRIM R - [SDR 9613732204](https://openairdocs.org/sdr/9613732204.md): Crossfeed Valve · malfunctioned · Jun 24, 1996 · N204US · Boeing 727251 · Fuel Transfer Valve > DURING CRUISE, THE NR 1 FUEL CROSSFEED VALVE WOULD NOT OPEN. AIRCRAFT DIVERTED TO MEM, FUEL WAS DUMPED AND AIRCRAFT LANDED WITHOUT INCIDENT. LOCKED OPEN NR 1 FUEL CROSSFEED VALVE AND PLACED ON MEL. - [SDR 9613472204](https://openairdocs.org/sdr/9613472204.md): Battery Pack · discharged · Jun 20, 1996 · N204US · Boeing 727251 · Emergency Lighting > DURING PRE-FLIGHT, FOUND EMERGENCY LIGHTS INOPERATIVE AT BOTTOM OF AFT AIRSTAIRS. REPLACED BATTERY PACK. OPERATIONAL CHECK OK. - [SDR 9606782204](https://openairdocs.org/sdr/9606782204.md): Actuator · malfunctioned · Mar 23, 1996 · N204US · Boeing 727251 · Leading Edge Slat Actuator > DURING DEPARTURE CLIMB UPON FLAP RETRACTION, THE NR 2 LEADING EDGE SLAT REMAINED EXTENDED WITH FLAPS UP SELECTED. NOTABLE VIBRATION WAS FELT. CREW JETTISONED 20,000 LBS OF FUEL AND RETURNED TO MSP WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED THE NR 2 SLAT - [SDR 9603702204](https://openairdocs.org/sdr/9603702204.md): Actuator · malfunctioned · Feb 14, 1996 · N204US · Boeing 727251 · Leading Edge Slat Actuator > DURING CLIMB UPON FLAP RETRACTION, THE NR 2 LEADING EDGE FLAP WOULD NOT RETRACT. CYCLED FLAPS TO NO AVAIL. CREW DECLARED A YELLOW EMERGENCY AND JETTISONED 20,000 POUNDS OF FUEL. AIRCRAFT RETURNED TO TPA WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED THE NR - [SDR 9603692204](https://openairdocs.org/sdr/9603692204.md): Retract Mech · malfunctioned · Feb 14, 1996 · N204US · Boeing 727251 · Leading Edge Slat Control System > AFTER TAKEOFF DURING FLAP RETRACTION, THE NR 2 LEADING EDGE SLAT WOULD NOT RETRACT. RECYCLED FLAPS TO NO AVAIL. VISUAL INSPECTION AND INDICATION SYSTEM SHOWED NR 2 LEADING EDGE SLAT FULLY EXTENDED. FLIGHT CREW DECLARED A YELLOW EMERGENCY AND JETTISONED 22,0 - [SDR 9514312204](https://openairdocs.org/sdr/9514312204.md): Stab Trim · out of position · Sep 14, 1995 · N204US · Boeing 727251 · Stabilizer Control System > WHEN POWER WAS ADVANCED FOR TAKEOFF, CONFIGURATION AURAL WARNING HORN SOUNDED, ABORTED DEPARTURE. RESET STABILIZER TO 3.1 UNITS AND SYSTEM CHECKED NORMAL. - [SDR 9515722204](https://openairdocs.org/sdr/9515722204.md): Flanges · corroded · Sep 5, 1995 · N204US · Boeing 727251 · Fuselage Main, Plate/Skin > DURING PERIODIC CHECK, FOUND CORROSION ON PANEL NR 1104 CUTOUT FLANGES, LBL 5 RBL 9. REPAIRED PER EA 22-99245. - [SDR 9515692204](https://openairdocs.org/sdr/9515692204.md): Longeron · corroded · Sep 1, 1995 · N204US · Boeing 727251 · Fuselage Main, Longeron/Stringer > DURING PERIODIC CHECK, FOUND CORROSION ON LONGERON 27R AT FS 620. REPAIRED PER EA 22-99243. - [SDR 9513522204](https://openairdocs.org/sdr/9513522204.md): Casting · cracked · Aug 30, 1995 · N204US · Boeing 727251 · Emergency Exits > DURING PERIODIC CHECK, FOUND A CRACK IN THE LEFT AFT EMERGENCY EXIT LATCH OPENING FRAME. REPLACED CASTING. - [SDR 9513882204](https://openairdocs.org/sdr/9513882204.md): Floorbeam · corroded · Aug 28, 1995 · N204US · Boeing 727251 · Fuselage Main, Floor Beam > DURING PERIODIC CHECK, FOUND CORROSION ON THE BS 1130 FLOOR BEAM UPPER CHORD. REPAIRED BEAM (P/N 65-20838-16), PER EA 22-99070. - [SDR 9513452204](https://openairdocs.org/sdr/9513452204.md): Skin · delaminated · Aug 22, 1995 · N204US · Boeing 727251 · Spoilers > DURING PERIODIC CHECK, FOUND DELAMINATION IN THE LEFT WING NR 5 SPOILER UPPER SKIN. REPLACED SPOILER. - [SDR 9513442204](https://openairdocs.org/sdr/9513442204.md): Skin · delaminated · Aug 22, 1995 · N204US · Boeing 727251 · Spoilers > DURING PERIODIC CHECK, FOUND DELAMINATION IN THE LEFT WING NR 2 SPOILER UPPER SKIN. REPLACED SPOILER. - [SDR 9513432204](https://openairdocs.org/sdr/9513432204.md): Skin · delaminated · Aug 22, 1995 · N204US · Boeing 727251 · Trailing Edge Flaps > DURING PERIODIC CHECK, FOUND INBOARD AFT FLAP DELAMINATED AND SPLIT. REPLACED FLAP. - [SDR 9510822204](https://openairdocs.org/sdr/9510822204.md): Aural Warning · sounded · Jul 15, 1995 · N204US · Boeing 727251 · Central Warning > WEAK AURAL WARNING HORN SOUNDED ON TAKEOFF WITH 15 DEGREE FLAP SETTING, ABORTED TAKEOFF. SECOND DEPARTURE WAS NORMAL. MAINTENANCE REPLACED AURAL WARNING HORN UNIT. OPERATIONAL CHECK NORMAL. - [SDR 9506492204](https://openairdocs.org/sdr/9506492204.md): Indication · malfunctioned · Apr 22, 1995 · N204US · Boeing 727251 · Landing Gear Position and Warning > DURING DEPARTURE CLIMB UPON PLACING GEAR HANDLE IN 'OFF' POSITION, TAIL SKID INDICATION REMAINED ILLUMINATED. JETTISONED 6000 LBS OF FUEL AND RETURNED TO DTW WITHOUT FURTHER INCIDENT. MAINTENANCE VERIFIED INDICATION NOT DUE TO TAIL STRIKE. DEFERRED TAIL SKI - [SDR 9501072204](https://openairdocs.org/sdr/9501072204.md): Apex Pin · missing · Jan 17, 1995 · N204US · Boeing 727251 · Landing Gear Steering System > ON LANDING ROLLOUT AT 100 KTS, AIRCRAFT VEERED TO THE LEFT AND BEGAN TO SHUDDER. MAINTENANCE INSPECTED AIRCRAFT ON RUNWAY AND FOUND NOSE GEAR TORSION LINK APEX PIN MISSING. TOWED OFF RUNWAY AND REPLACED APEX PIN. OPERATIONAL CHECK WAS NORMAL. ## 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 = 'N204US' AND deregistration_id = 'N204US-2007-09-18' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/deregistered/N204US-2007-09-18/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.