# Service difficulty reports: N601US, cancelled Mar 27, 2001 A list on [N601US, cancelled Mar 27, 2001](https://openairdocs.org/deregistered/N601US-2001-03-27.md). Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Newest first. - [SDR 0000806601](https://openairdocs.org/sdr/0000806601.md): Engine · bird strike · Mar 4, 2000 · N601US · Boeing 747151 · Turbine Engine Compressor Section > WHILE CLIMBING AT 2000 FT AGL, THE NR 1 ENGINE SUSTAINED A BIRSTRIKE. THE ENGINE COMPRESSOR STALLED AND WAS SHUT DOWN. THE FLIGHT DIVERTED TO MSP LANDING WITHOUT INCIDENT. MAINTENANCE INSPECTED THE ENGINE AND FOUND EVIDENCE OF BIRD INGESTION. A BOROSCOPE I - [SDR 0000466601](https://openairdocs.org/sdr/0000466601.md): Slide · deployed · Feb 25, 2000 · N601US · Boeing 747151 · Escape Slide > DURING LINE CHECK, DOOR 1R EVACUATION SLIDE PARTIALLY DEPLOYED BUT DID NOT INFLATE. REPLACED DOOR ASSIST BOTTLE AND SLIDE, OPERATIONAL CHECK GOOD. - [SDR 9810326601](https://openairdocs.org/sdr/9810326601.md): Engine · flamed out · Oct 28, 1998 · N601US · Boeing 747151 · Engine (Turbine/Turboprop) > DURING CRUISE AT FL390, THE NR 4 ENGINE FLAMED OUT. THE AIRCRAFT DESCENDED TO FL330 AND THE ENGINE WAS RESTARTED PER COM. THE AIRCRAFT RETURNED TO MSP AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED THE ENGINE PER FIM, WITH NO DISCREPANCIES NOTED. THE E - [SDR 9809346601](https://openairdocs.org/sdr/9809346601.md): Engine · flamed out · May 15, 1998 · N601US · Boeing 747151 · Engine (Turbine/Turboprop) > WHILE AT CRUISE FL330 AND IN LIGHT TO MODERATE TURBULENCE, THE NR 2 ENGINE APPEARED TO ROLL BACK TO IDLE AND WOULD NOT RESPOND TO THRUST LEVER MOVEMENT. ENGINE FLAMEOUT PROCEDURES WERE FOLLOWED AND THE ENGINE WAS RESTARTED. AFTER RESTART THE ENGINE OPERATED - [SDR 9721316601](https://openairdocs.org/sdr/9721316601.md): Spar Web · corroded · Oct 21, 1997 · N601US · Boeing 747151 · Wing Spar > DURING PERIODIC CHECK, FOUND CORROSION ON LEADING EDGE FORWARD SPAR WEB AT FS 1521 AT LOWER SPAR CHORD. REPAIRED PER EA 66-152528. - [SDR 9710126601](https://openairdocs.org/sdr/9710126601.md): Engine · flamed out · May 22, 1997 · N601US · Boeing 747151 · Engine (Turbine/Turboprop) > NR 4 ENGINE FLAMED OUT AT FL370 WITH IGNITION OFF AND CONDITIONS CALM. RESTART AT FL290 OK. NO FURTHER PROBLEMS. MAINTENANCE INSPECTED INLET AND EXHAUST, FOUND OK. FUEL FILTER WAS CLEAN. REPLACED THE TT2 SENSOR, HIGH POWER RUN CHECKED NORMAL. SPECIFIC PA - [SDR 9709386601](https://openairdocs.org/sdr/9709386601.md): Engine · malfunctioned · May 13, 1997 · N601US · Boeing 747151 · Engine (Turbine/Turboprop) > DURING TAXI, THE NR 4 ENGINE EGT WENT TO TOP OF GAUGE FOR APPROXIMATELY 90 TO 120 SECONDS. ALSO, NR 4 ENGINE OIL RPESSURE WARNING LIGHT ILLUMINATED. NO FIRE WARNING AND OIL TEMPERATURE WAS NORMAL. MAINTENANCE INSPECTED ENGINE PER MM 72-00-00. NO DEFECTS WE - [SDR 9708916601](https://openairdocs.org/sdr/9708916601.md): Wire · broken · May 6, 1997 · N601US · Boeing 747151 · Light System Wiring > DURING LINE CHECK, FOUND LEFT 'A' ZONE EMERGENCY PATH LIGHTS INOPERATIVE. REPAIRED BROKEN WIRE AT 5B, OPERATIONAL CHECK GOOD. - [SDR 9705416601](https://openairdocs.org/sdr/9705416601.md): Panel · cracked · Mar 11, 1997 · N601US · Boeing 747151 · Wing, Plate/Skin > DURING CLIMB, A CRACK WAS NOTED ON THE RIGHT HAND WING LEADING EDGE UPPER SKIN PANEL 6 FEET FROM FUSELAGE. THE AIRCRAFT RETURNED TO NRT AND LANDED WITHOUT INCIDENT, NO EMERGENCY WAS DECLARED. THE PANEL WAS REPAIRED AND REINSTALLED. - [SDR 9623916601](https://openairdocs.org/sdr/9623916601.md): Prbc · malfunctioned · Nov 8, 1996 · N601US · Boeing 747151 · Compressor Bleed Valve > AT TOP OF DESCENT, THE NR 4 ENGINE EXPERIENCED A MILD COMPRESSOR STALL. AS EGT STARTED TO CLIMB TO APPROXIMATELY 850 DEGREES, CREW FOLLOWED COM PROCEDURE, SHUT DOWN THE ENGINE AND ACCOMPLISHED A SUCCESSFUL RESTART AT FL240. FLIGHT CONTINUED TO NRT WITHOUT FU - [SDR 9613716601](https://openairdocs.org/sdr/9613716601.md): Overheat Wire · failed · Jun 23, 1996 · N601US · Boeing 747151 · Overheat Detection > DURING CLIMB, THE NR 3 HYDRAULIC SYSTEM OVERHEAT LIGHT ILLUMINATED. FOLLOWED COCKPIT OPERATING MANUAL PROCEDURES AND LIGHT REMAINED ILLUMINATED. AIRCRAFT RETURNED TO NRT AND LANDED WITHOUT INCIDENT. REPAIRED WIRE FOR OVERHEAT INDICATION IN THE NR 3 HYDRAULI - [SDR 9608146601](https://openairdocs.org/sdr/9608146601.md): Bleed Contl Vlv · malfunctioned · Apr 9, 1996 · N601US · Boeing 747151 · Compressor Bleed Valve > DURING APPROACH, THE NR 4 ENGINE STALLED. CREW SHUT DOWN THE ENGINE. WHEN ENGINE WAS RESTARTED, THE NR 4 EGT ROSE TO 760 DEGREES AND THE ENGINE WAS SHUT DOWN FOR THE REMAINDER OF THE FLIGHT. AIRCRAFT LANDED WITHOUT FURTHER INCIDENT. REPLACED THE PRESSURE R - [SDR 9606746601](https://openairdocs.org/sdr/9606746601.md): Condition Motor · malfunctioned · Mar 20, 1996 · N601US · Boeing 747151 · Engine EGT/TIT Indicating System > DURING TAXIING, THE NR 3 ENGINE EXPERIENCED HOT START AND EGT CLIMBED TO 900 DEGREES. THE ENGINE WAS SHUTDOWN AND THE AIRCRAFT RETURNED TO THE GATE WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED THE NR 3 ENGINE CONDITION MOTOR AND PERFORMED RUNUP CHECK. RUN - [SDR 9605636601](https://openairdocs.org/sdr/9605636601.md): Skin · corroded · Mar 2, 1996 · N601US · Boeing 747151 · Fuselage Main, Plate/Skin > DURING P-CHECK, FOUND CORROSION ON THE FUSELAGE SKIN AT BS 1960, STR 29R - STR 42R. REPAIRED SKIN (P/N 65B07000-9) PER EA 66-99465. - [SDR 9605626601](https://openairdocs.org/sdr/9605626601.md): Fitting · corroded · Mar 1, 1996 · N601US · Boeing 747151 · Fuselage Miscellaneous Structure > DURING P-CHECK, FOUND CORROSION ON THE BS 1416 FRAME TO STRINGER TIE FITTING, 28 INCHES BELOW THE CEILING IN THE LEFT BODY GEAR WHEELWELL. REPLACED FITTING. - [SDR 9607446601](https://openairdocs.org/sdr/9607446601.md): Rib · cracked · Feb 29, 1996 · N601US · Boeing 747151 · Wing, Rib/Bulkhead > DURING P-CHECK, FOUND A CRACK IN THE LEFT WING LEADING EDGE RIB AT FSSI 1453. REPAIRED RIB (P/N 65B07848-5) PER EA 66-99441. - [SDR 9605606601](https://openairdocs.org/sdr/9605606601.md): Frame · corroded · Feb 29, 1996 · N601US · Boeing 747151 · Cargo/Baggage Doors > DURING P-CHECK, FOUND CORROSION ON THE BULK CARGO DOOR FORWARD LOWER CORNER FRAME. REPAIRED FRAME (P/N 65B07094-1) PER EA 66-99453. - [SDR 9605596601](https://openairdocs.org/sdr/9605596601.md): Sill · cracked · Feb 28, 1996 · N601US · Boeing 747151 · Fuselage Miscellaneous Structure > DURING P-CHECK, FOUND A CRACK AND CORROSION IN THE DOOR 5R LOWER SILL CHORD BS 2280. REPAIRED CHORD (P/N 65B04423-2) PER EA 66-99546. - [SDR 9605196601](https://openairdocs.org/sdr/9605196601.md): Fitting · cracked · Feb 26, 1996 · N601US · Boeing 747151 · Fuselage Miscellaneous Structure > DURING P-CHECK, FOUND A 2.125 INCH CRACK IN THE NR 4 RIGHT DOOR FORWARD SIDE CUTOUT FITTING BS 1668, 8 INCHES ABOVE THE THRESHOLD. REPLACED FITTING PER SRM 51-10-01 PAR 9. - [SDR 9604706601](https://openairdocs.org/sdr/9604706601.md): Fitting · corroded · Feb 19, 1996 · N601US · Boeing 747151 · Fuselage Miscellaneous Structure > DURING P-CHECK, FOUND CORROSION ON THE BS 1480 BULKHEAD TO THE KEEL BEAM TORQUE BOX DRAG FITTING IN THE RIGHT BODY LANDING GEAR WHEEL WELL. REPLACED FITTING. - [SDR 9605426601](https://openairdocs.org/sdr/9605426601.md): Blkhd Web · cracked · Feb 15, 1996 · N601US · Boeing 747151 · Fuselage Main, Bulkhead > DURING P-CHECK, FOUND A CRACK IN THE BS 400 BULKHEAD WEB LBL 41 AT THE UPPER INBOARD CORNER OF THE LEFT CUTOUT. REPAIRED THE WEB (P/N 65B07936) PER EA 66-99395. - [SDR 9601476601](https://openairdocs.org/sdr/9601476601.md): Selector Valve · failed · Jan 20, 1996 · N601US · Boeing 747151 · Landing Gear Brake System > AFTER TAKEOFF, GEAR AND FLAPS CHECKED UP, NR 4 HYDRAULIC SYSTEM QUANTITY INDICATION ILLUMINATED. CREW FOLLOWED COCKPIT OPERATING PROCEDURE AND RETURNED TO NRT. REPLACED RESERVE BRAKE SELECTOR VALVE AND PERFORMED LEAK CHECK. CHECK WAS NORMAL AND AIRCRAFT RET - [SDR 9601396601](https://openairdocs.org/sdr/9601396601.md): Hyd Swivel · broken · Jan 19, 1996 · N601US · Boeing 747151 · Hydraulic System, Main > DURING CLIMB, AIRCRAFT LOST HYDRAULIC QUANTITY ON THE NR 4 HYDRAULIC SYSTEM, WHEN THE LANDING GEAR WAS RETRACTED. AIRCRAFT RETURNED TO NRT AND LANDED WITHOUT INCIDENT. FOUND BROKEN SWIVEL JOINT ON THE RIGHT WING LANDING GEAR DOWNLOCK ACTUATOR. REPLACED ADP - [SDR 9518366601](https://openairdocs.org/sdr/9518366601.md): Csd Oil Cooler · leaking · Nov 17, 1995 · N601US · Boeing 747151 · Alternator-Generator Drive > AT FL 350, THE NR 2 ENGINE FIRE WARNING LIGHT ACTIVATED. BOTH A AND B NACELLE TEMPERATURES AT 9 DEGREES AND RISING, NR 2 GENERATOR FIELD AND PRESSURE LIGHTS INCLUDING GROUND BRAKER LIGHT CAME ON. CREW ACCOMPLISHED ENGINE SHUTDOWN, FIRED BOTTLE, AND RETURNED - [SDR 9518046601](https://openairdocs.org/sdr/9518046601.md): Actuator · leaking · Nov 14, 1995 · N601US · Boeing 747151 · Landing Gear Retraction/Extension System > DURING DESCENT, THE NR 1 HYDRAULIC SYSTEM FAILED. ALSO, ALTERNATE ELECTRICAL SYSTEM FAILED TO OPERATE FLAPS. CREW LANDED AIRCRAFT WITH OUTBOARD FLAPS AT 25 DEGREES AND INBOARD AT 10 DEGREES. FLIGHT LANDED WITHOUT INCIDENT AND WAS TOWED TO GATE. FOUND LEAKI - [SDR 9511176601](https://openairdocs.org/sdr/9511176601.md): Engine · flamed-out · Jul 24, 1995 · N601US · Boeing 747151 · Engine (Turbine/Turboprop) > DURING CRUISE, THE NR 4 ENGINE FLAMED-OUT. RELIGHT WAS OK AND THE REMAINDER OF THE FLIGHT WAS UNEVENTFUL. FUEL PRESSURE CHECKED OK AND THE FUEL FILTER WAS REPLACED. GROUND RUNUP CONFIRMED PROPER ENGINE OPERATION. - [SDR 9503446601](https://openairdocs.org/sdr/9503446601.md): Cadc · malfunctioned · Mar 4, 1995 · N601US · Boeing 747151 · Air Data Computer > AFTER TAKEOFF, THE NR 1 AND NR 3 INS FAILED. CREW FOLLOWED COCKPIT OPERATING MANUAL AND RETURNED TO NRT. MAINTENANCE REPLACED NR 1 CADC AND PERFORMED BITE AND LEAK CHECK. SYSTEM CHECKED NORMAL. AIRCRAFT RETURNED TO SERVICE. - [SDR 9503006601](https://openairdocs.org/sdr/9503006601.md): Tr Unit · inoperative · Feb 21, 1995 · N601US · Boeing 747151 · Engine Thrust Reverser > DURING LANDING ROLLOUT, THE NR 4 ENGINE REMAINED IN REVERSE RESULTING IN A COMPRESSOR STALL AND OVERTEMP. THE ENGINE WAS SHUT DOWN AND THE AIRCRAFT TAXIED TO THE GATE. FOUND NR 4 THRUST REVERSER DRIVE UNIT INOPERATIVE. LOCKED OUT NR 4 THRUST REVERSER, BORES ## 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 = 'N601US' AND deregistration_id = 'N601US-2001-03-27' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/deregistered/N601US-2001-03-27/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.