Boeing 747-121

Service difficulty reports · 3,030

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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 aircraft_model_key = '747121'
  ORDER BY difficulty_date DESC"

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SDR UPS405420Frame Web · crackedWHILE IN FOR C-CHECK, MAINTENANCE FOUND CRACK IN LOWER FRAME WEB BLANKET HOLE AT BS 1700 S-46 LT. STOP DRILLED CRACK, REPAIRED WEB IAW SRM 53-10-04 FIG 41.Feb 1, 1996 · N691UP · Boeing 747121 · Fuselage Main, FrameSDR UPS405418Frame Web · dentedWHILE IN FOR C-CHECK, MAINTENANCE FOUND DENT IN FRAME WEB UNDER UPPER CHORD AT BS 1760 LBL 52, DAMAGE OUT OF LIMITS PER SRM 53-10-01. REMOVED DAMAGED SECTION OF FRAME WEB AND REPAIRED IAW SRM 51-40-02.Feb 1, 1996 · N691UP · Boeing 747121 · Fuselage Main, BulkheadSDR UPS405389Cargo Track · out of limitsWHILE IN FOR C-CHECK, AT AMS, MAINTENANCE REPORTED, FOUND EXISTING BLEND-OUTS IN CARGO TRACK OUT OF LIMITS PER SRM 51-10-01 AT LBL 25 BETWEEN B.S. 1750 AND 1770. REPAIRED PER SRM 53-10-05, FIG. 5.Feb 1, 1996 · N691UP · Boeing 747121 · Fuselage, Seat/Cargo Attach FittingsSDR UPS405514Frame · crackedWHILE IN AMS FOR C-CHECK, MAINTENANCE REPORTED CRACK AND CORROSION ON FRAME AT BS 1860, JUST UNDER SIDE GUIDE. REMOVED DAMAGED SECTION FROM FRAME UPPER CHORD AND REPAIRED FRAME ACC TO SRM 51-40-03 FIG 1.Jan 31, 1996 · N691UP · Boeing 747121 · Fuselage Main, FrameSDR UPS405462Stringer · crackedWHILE IN AMS FOR C CHECK, MAINTENANCE REPORTED FWD. CARGO COMP. STR. 39 RT BETWEEN STA 460-480, STRINGER IS CRACKED. REPAIRED PER SRM 53-10-03, FIG. 3.Jan 31, 1996 · N691UP · Boeing 747121 · Fuselage Main, Longeron/StringerSDR UPS405373Skin · corrodedWHILE IN FOR C-CHECK IN AMS, MAINTENANCE REPORTED, CORROSION AT B.S. 1720 LT STR 34 AT LAP SPLICE. OUT OF LIMITS I.A.W. 53-30-01, REPAIRED PER SRM 53-30-03, FIG. 17.Jan 31, 1996 · N691UP · Boeing 747121 · Fuselage Main, Plate/SkinSDR P5CA9600090Indicator · inoperativeRETURNED TO RAMP DUE TO IMPROPER RT OUTBOARD AILERON INDICATION. FUNCTIONAL CHECK OF ALL CONTROL SURFACES NORMAL, ALL COCKPIT INDICATIONS NORMAL IAW MM 27-00-00.Jan 27, 1996 · N830FT · Boeing 747121 · Aileron Control SystemSDR UPS405342Release Handle · brokenMAINTENANCE REPORTED, ESCAPE SLIDE RELEASE HANDLE CLIP BROKEN AND PAWL BROKEN MAKING ESCAPE SLIDE ARMED AND NOT SAFE. REMOVED AND REPLACED RELEASE HANDLE CLIP AND PAWL. SLIDE SECURED AND OPERATES FROM SAFE TO ARM NORMALLY.Jan 26, 1996 · N683UP · Boeing 747121 · Emergency EquipmentSDR P5CA9600026Actuator · inoperativeDURING TAXI OUT, ON FLIGHT CONTROL CHECK, FOUND RT AILERON WOULD NOT UNLOCK FROM HIGH SPEED MODE WITH FLAPS IN TAKEOFF POSITION. RETURNED TO BLOCKS, APPLIED HEAT TO AILERON LOCKOUT ACTUATOR AND SYSTEM BECAME OPERATIVE. OPERATIONAL CHECK GOOD IAW MM 27-11-00.Jan 22, 1996 · N831FT · Boeing 747121 · Aileron Control SystemSDR TWRA9605Compressor · stalledGYC - DURING CLIMB AT FL 270, NR 3 ENGINE HAD A COMPRESSOR STALL (LOUD BANG) AND EGT WENT TO 1,000 DEGREES FOR 8 SECONDS. ENGINE WAS SHUT DOWN IAW CHECK LIST. UPON LANDING, MAINTENANCE FOUND METAL IN THE TAILPIPE. AIRCRAFT WAS SET UP FOR 3-ENGINE FERRY PER Jan 16, 1996 · N613FF · Boeing 747121 · Turbine Engine Compressor SectionSDR TWRA9602Coffee Maker · failedJFK/LAX - DURING FLIGHT, MID-GALLEY COFFEE MAKER TRIPPED CIRCUIT BREAKER. WHEN CIRCUIT BREAKER WAS RESET, A STRONG ODOR OF ELECTRICAL SMOKE WAS NOTICED FOLLOWED BY VISUAL SMOKE. THE GALLEY WAS ISOLATED BY SHUTTING OFF GALLEY POWER. THE GALLEY WAS PLACARDED,Jan 10, 1996 · N604FF · Boeing 747121 · Buffet/GalleysSDR UPS405160Light · inoperativeMAINTENANCE FOUND FWD L1 DOOR EMERGENCY LIGHT AND CEILING EMERGENCY LIGHT FWD OF CREW STAIRS ARE INOP. REPLACED CEILING AISLE LIGHT ASSY L1 AND AISLE EMERGENCY LIGHT OP NORMAL.Dec 23, 1995 · N683UP · Boeing 747121 · Emergency LightingSDR UPS05154Fire Det · malfunctionedLOWER CARGO AFT FIRE LIGHT FLICKERED MOMENTARILY. LOWER AFT CARGO FIRE DETECTOR TEST NORMAL. NO PROBLEM AFTER FLICKER.Dec 21, 1995 · N690UP · Boeing 747121 · Fire DetectionSDR EIAA9568Fire Loop · malfunctionedNR 1 ENGINE B-LOOP FAULT LIGHT ON IN FLIGHT, DID PRECAUTIONARY ENGINE SHUT DOWN BECAUSE NR 1 ENGINE A-LOOP SHOWS SPIKING INDICATION AND IS ENTERED ON DMI 792. AIRCRAFT RETURNED TO JFK. REPAIRED CONNECTOR AT LOWER FORWARD ELEMENT B-LOOP, OPS CHECK OK PER MM 2Dec 15, 1995 · N474EV · Boeing 747121 · Fire DetectionSDR P5CA9500872Tires · failedDURING TAKEOFF ROLL, AIRCRAFT SWUNG VIOLENTLY TO THE LEFT, CAUSING LEFT WING AND BODY GEAR TRUCKS TO DEPART LEFT SIDE OF RUNWAY. ABORTED TAKEOFF. INCIDENT CAUSED DAMAGE TO LT WING GEAR BRAKE EQUALIZATION RODS, BRAKE SYSTEM HYDRAULIC LINES, 2 DEFLATED TIRES. Dec 13, 1995 · N830FT · Boeing 747121 · TireSDR UPS405139Compressor · stalledCREW REPORTED EN ROUTE TO HKG, NR 2 ENG SHUTDOWN DUE TO SEVERE COMPRESSOR STALL CLIMBING THROUGH 11,000 FEET. EGT RECORDED AT 1096 DEGREES, ENG SHUTDOWN IAW ENG SEVERE DAMAGE CHECK LIST. REMOVED AND REPLACED NR 2 ENG PER MM TC5000. OPS AND LEAK CHECK GOOD. Dec 11, 1995 · N681UP · Boeing 747121 · Turbine Engine Compressor SectionSDR P5CA9500867Transmitter Mnt · out of rigDURING CLIMBOUT, OUTBOARD FLAPS WOULD NOT RETRACT HYDRAULICALLY PAST APPROX 7 DEGREES. FOUND LEFT OUTBOARD TRANSMITTER MOUNT ASSY OUT OF RIG. RE-RIGGED AND REPLACED TRANSMITTER ASSY PER BOEING MAINTENANCE MANUAL 27-58-01, OPERATIONAL CHECK OK. REPLACED FLAPDec 11, 1995 · N830FT · Boeing 747121 · Trailing Flap Position Indicating SystemSDR P5CA9500869Accumulator · failedNR 1 AND NR 4 HYDRAULIC SYSTEM PRESSURE AND QUANTITY WENT TO ZERO DURING PUSHBACK. FOUND BRAKE SURGE ACCUMULATOR FAILED, REPLACED SAME IAW MM 32-41-22. SERVICED SYSTEM IAW MM 12-15-11, REPLENISHED HYDRAULIC FLUID, LEAK CHECK GOODDec 10, 1995 · N831FT · Boeing 747121 · Landing Gear Brake SystemSDR P5CA9500868Motor Clutch · slipsDURING AIR TURN BACK FOR SPLIT FLAP, INBOARD FLAPS DID NOT WORK IN ALTERNATE WORK, OK IN NORMAL. FOUND THAT THE INBOARD FLAP ELECTRIC MOTOR CLUTCH SLIPPING REPLACED ALTERNATE FLAP MOTOR ASSY PER BOEING M/M 27-51-17. OPERATIONAL CHECK OK PER M/M 27-51-00.Dec 10, 1995 · N830FT · Boeing 747121 · Trailing Edge Flap Control SystemSDR UPS805131Panel · delaminatedWHILE ON GROUND, MAINTENANCE FOUND LEFT WING LOWER TRAILING EDGE PANEL DELAMINATED. REPAIRED IAW EO B747-5730-7572A, FIXED COMPOSITE PANEL A-BEAM OF WING GEAR IAW SRM 51-10-01, SRM 51-40-09.Dec 5, 1995 · N690UP · Boeing 747121 · Wing, Plate/SkinSDR TWRA9567Fairing · missingDURING APPROACH INTO MIA, NR 5 FLAP TRACK FAIRING SEPARATED FROM AIRCRAFT. UPON LANDING, INSPECTION FOUND FORWARD ATTACH HINGE BOLTS (2) MISSING. H-FITTING BROKEN, DRIVE ROD AND ATTACH FITTING BROKEN. ALSO, A 32 INCH CRACK IN THE AFT FLAP (BOTTOM T/E). THEDec 4, 1995 · N617FF · Boeing 747121 · Trailing Edge FlapsSDR P5CA9500857Engine · failedNR 1 ENGINE STALL WHILE CLIMBING FROM 34.0 TO 35.0. ALL PARAMETERS SLOW AFTER STALL, EGT DID NOT EXCEED 760 DEGREES. ON LANDING IN KHV, FOUND METAL IN TAILPIPE. ENGINE TO BE CHANGED IAW POLAR WORK CARDS M7100-002 AND M7100-002A.Dec 4, 1995 · N832FT · Boeing 747121 · Engine (Turbine/Turboprop)SDR P5CA9500855Panel · delaminatedFOUND RIGHT HAND WING UPPER LEADING EDGE PANEL DELAMINATED WITH SECTION MISSING JUST OUTBOARD OF NR 3 ENGINE PYLON. REPAIRED PANEL PER SRM 51-40-14.Dec 1, 1995 · N831FT · Boeing 747121 · Wing, Plate/SkinSDR P5CA9500854Structure · crackedFOUND NOSE LANDING GEAR ACTUATOR UPPER SUPPORT STRUCTURE CRACKED AT LOWER INBOARD FLANGE AREA JUST AFT OF WEB. BLENDED OUT CRACKED AREA PER EA PAO-LAX-95-0041RE.Nov 30, 1995 · N831FT · Boeing 747121 · Fuselage Main, StructureSDR P5CA9500853Skin · damagedFOUND HOLE IN LEFT INBOARD ELEVATOR UPPER SURFACE WITH HONEYCOMB EXPOSED. REPAIRED PER SRM 51-40-15.Nov 29, 1995 · N831FT · Boeing 747121 · Elevator StructureSDR P5CA9500852Skin · crackedFOUND 2 INCH CRACK IN FUSELAGE SKIN AT STATION 2650 ABOVE LEFT ELEVATOR. REPAIRED PER SRM 53-30-03.Nov 29, 1995 · N831FT · Boeing 747121 · Fuselage Main, Plate/SkinSDR P5CA9500851Bolt · corrodedFOUND RUST ON BOLT AND HOLE AT NR 3 LATCH LOWER ATTACH POINT FOR AFT CARGO DOOR. REMOVED CORROSION PER SRM 51-10-01, TREATED AND PRIMED PER SRM 51-10-02.Nov 29, 1995 · N831FT · Boeing 747121 · Cargo/Baggage DoorsSDR P5CA9500850Panel · tornFOUND PANEL TORN AT LEFT WING INBOARD MIDFLAP BETWEEN NR 3 AND NR 4 FLAP TRACK FAIRINGS. REPAIRED PANEL PER SRM 51-40-04.Nov 29, 1995 · N831FT · Boeing 747121 · Trailing Edge FlapsSDR P5CA9500849Skin · crackedFOUND 4 INCH CRACK IN FUSELAGE SKIN AT STA 2710, ABOVE LEFT ELEVATOR. REPAIRED PER SRM 53-30-03.Nov 29, 1995 · N831FT · Boeing 747121 · Fuselage Main, Plate/SkinSDR P5CA9500845Fire Light · illuminatedDURING PREFLIGHT CHECK, FOUND APU FIRE HANDLE HAD LIGHTS ON WITH NO BELL. FEO PULLED THE FIRE HANDLE, LIGHT REMAINED ON, FEO FIRED THE FIRE BOTTLE AND LIGHT WENT OUT. APU PLACED ON DMI NOT TO BE USED. REPLACED BOTTLE AND SQUIB PER MM 26-22-01. APU OPS DURINov 25, 1995 · N831FT · Boeing 747121 · Fire DetectionSDR EIAA9561Press Relief · openEHAM - AFT CARGO DOOR LIGHT CAME ON AFTER TAKEOFF. AFTER SECOND PACK WAS TURNED ON, UNABLE TO PRESSURIZE. DOOR ANNUNCIATOR LIGHT ILLUMINATED IN FLIGHT AND DEPRESSURIZATION PROCEDURES CHECK COMPLETED, FUEL JETTISONED AND RETURNED TO EHAM. FOUND AFT CARGO DOONov 18, 1995 · N474EV · Boeing 747121 · Landing Gear Retraction/Extension SystemSDR P5CA9500842Seat Track · brokenON TAKEOFF FROM CHICAGO, F/O'S LEFT AFT SEAT TRACK BROKE. ALSO, UPON ARRIVAL AT ANCHORAGE, MAINTENANCE DISCOVERED RIGHT FWD TRACK CRACKED. REPLACED BOTH SEAT TRACK ASSEMBLIES, PART NR 812168-8 AND 811371-412, IAW MM 25-11-01.Nov 17, 1995 · N832FT · Boeing 747121 · Fuselage, Seat/Cargo Attach FittingsSDR P5CA9500840T2 Turbine Blade · failedNR 1 ENGINE FL 19,000 COMPRESSOR STALL WITH EGT RISE, PRECAUTIONARY ENGINE SHUTDOWN. FOUND TWO FAILED T2 TURBINE BLADES. ENGINE TO BE REPLACED PER POLAR WORK CARDS.Nov 14, 1995 · N831FT · Boeing 747121 · Turbine SectionSDR UPS405077Eel Connector · looseWHILE ON GROUND, MAINTENANCE FOUND EMERGENCY LT TEST FOUND INOP, EMERGENCY LT ON L-1 ENTRY DOOR INOP, FWD LIGHT AND ONE UPPER CARGO DECK CEILING LIGHT INTERMITTENT. RESECURED CONNECTOR AT M415 EMER LIGHT ASSY, OPS CHECKS GOOD.Nov 13, 1995 · N683UP · Boeing 747121 · Emergency LightingSDR P5CA9500838Overheat Switch · defectiveDURING TAXI, NR 4 HYDRAULIC OVERHEAT LIGHT ILLUMINATED NR 4 SYSTEM. REMOVED AND REPLACED NR 4 HYDRAULIC OVERHEAT SWITCH IAW MM 29-41-00.Nov 11, 1995 · N832FT · Boeing 747121 · Hydraulic Indicating SystemSDR TWRA9559Smoke Det Amp · intermittentMIA - AIRCRAFT EXPERIENCED AN INTERMITTENT AFT CARGO FIRE WARNING ON DESCENT INTO MIA. THE NR 1 BOTTLE WAS FIRED. THE SECOND BOTTLE WAS DISCHARGED ON APPROACH PER FM 2-12-3. UPON ARRIVAL, MAINTENANCE INSPECTED SYSTEM AND REPLACED 3 SMOKE DETECTORS AND 1 AMPNov 6, 1995 · N613FF · Boeing 747121 · Smoke DetectionSDR P5CA9500836Transmitter · failedDURING TAXI OUT, FLAPS SELECTED 10 DEGREES, THE OUTBOARD STOP AT 5 DEGREES, RECYCLED NO HELP. FOUND RIGHT OUTBOARD FLAP TRANSMITTER AT FAULT REPLACED TRANSMITTER AND CANNON PLUG PER MAINTENANCE MANUAL 27-58-01.Nov 6, 1995 · N830FT · Boeing 747121 · Leading Edge Slat Position Indicating SystemSDR TWRA9558Support Link · crackedNR 7 CANOE AFT SUPPORT LINK CRACKED. REMOVED AND REPLACED NR 7 FLAP TRACK LINK. OPS CHECK OK. (X)Oct 30, 1995 · N604FF · Boeing 747121 · Trailing Edge Flap Control SystemSDR TWRA9557Eng Vane Control · failedNR 1 ENGINE STALLED AT TOP OF DESCENT. EGT MAX 778 DEGREES, ENGINE SHUT-DOWN. RE-LIT NORMAL IN DESCENT AT FLIGHT LEVEL 280. ENGINE OPS NORMAL REMAINDER OF FLIGHT. REMOVED AND REPLACED EVC. OPS CHECK OK. (X)Oct 29, 1995 · N604FF · Boeing 747121 · Compressor Bleed ControlSDR TWRA9555Eel · inoperativeFORTY FOUR G/H LIGHT OVERHEAD EVAC LIGHTS INOP. REPLACED LIGHT ASSEMBLY. OPS CHECKS OK, MM33-50-00. SEAT MOUNTED EVAC LIGHT 14H INOP. REPAIRED WIRING. OPS CHECK OK 33-51-00. EVAC LENS MISSING SEAT 4H. REPLACED MISSING LENS. EVAC LENS PUSHED IN AT 5H. Oct 25, 1995 · N604FF · Boeing 747121 · Emergency LightingSDR P5CA9500822Aileron · locked outRETURNED TO BLOCKS DUE TO RIGHT HAND OUTBOARD AILERON LOCKED OUT WITH FLAPS AT 20 UNITS. INSPECTED RIGHT HAND OUTBOARD AILERON LOCKOUT ACTUATOR INSTRUMENTS AND WIRING. REMOVED, CLEANED, INSPECTED ELECTRICAL CONNECTIONS AND FOUND NO OBVIOUS DEFECTS, SYSTEM CHOct 20, 1995 · N830FT · Boeing 747121 · Aileron Control SystemSDR EIAA9551Cadc · failedJFK - LOG PAGE: F 02023 - NR 1 CADC FAILED, ALL ASSOCIATED FLAGS IN VIEW, RETURNED TO JFK. REPLACED NR 1 CADC PER MM 34-12-01 AND ACCOMPLISHED PITOT/STATIC CHECK OF SYSTEM PER MM 34-11-00. OPER TEST OK. (X)Oct 20, 1995 · N473EV · Boeing 747121 · Air Data ComputerSDR UPS404806Le Skin · crackedWHILE ON GROUND, MAINTENANCE FOUND RT INBD MIDFLAP LEADING EDGE HAS MULTIPLE CRACKS ON INBD SIDE APPROX 14 INCHES LENGTH, BEYOND SRM 51-40-09 LIMITS. VACUUMED TO CORE TO REMOVE WATER, INSTALLED HOT BONDED REPAIR PER SRM 51-40-12, PRIMED AND PAINTED LEADING EDOct 13, 1995 · N690UP · Boeing 747121 · Trailing Edge FlapsSDR UPS404805Skin · crackedWHILE ON GROUND, MAINTENANCE FOUND RT INBD FOREFLAP INBD EDGE HAS A CRACK APPROX 2.5 INCHES LENGTH, BEYOND SRM 51-40-09 LIMITS. REPAIRED IAW SRM 51-40-09.Oct 13, 1995 · N690UP · Boeing 747121 · Trailing Edge FlapsSDR UPS404736Skin · corrodedWHILE IN AMSTERDAM FOR C-CHECK, MAINTENANCE FOUND RT WING LOWER SKIN CORRODED. REMOVED CORRODED PAD-UP AT LES STA 780. MAINTENANCE REPAIRED IAW UPS E.O. 747-57-0291.Oct 4, 1995 · N683UP · Boeing 747121 · Wing, Plate/SkinSDR UPS404735Shear Ties · crackedWHILE IN AMSTERDAM FOR C-CHECK, MAINTENANCE FOUND SHEAR TIES CRACKED AND CORRODED ON BS 1700 BETWEEN STRINGER 51 LT AND STRINGER 51 RT BETWEEN STRINGER 47 AND 46, RT AND BETWEEN STRINGER 48 AND 49 RT. MAINTENANCE FOUND CRACKS AND CORROSION OUT OF LIMITS AND ROct 4, 1995 · N683UP · Boeing 747121 · Fuselage Miscellaneous StructureSDR UPS404734Shear Ties · crackedWHILE IN AMSTERDAM FOR C-CHECK, MAINTENANCE FOUND SHEAR TIES CRACKED AT BS 1720 RT BETWEEN STR 47/48 AND STR 48/49. MAINTENANCE FOUND CRACK OUT OF LIMITS AND REPAIRED IAW SRM 53-10-01, 53-10-04, FIGURE 3.Oct 4, 1995 · N683UP · Boeing 747121 · Fuselage Miscellaneous StructureSDR UPS404733Stringer · crackedWHILE IN AMSTERDAM FOR C-CHECK, MAINTENANCE FOUND SEVERAL CRACKS ON STR 6 LT AT BS 340/400 BY HFEC INSP. MAINTENANCE INSTALLED REPAIR DOUBLER ACC SB53-2253R2 AND DWR 65B28212-1 AND -2 PER UPS E.O. B747-5330-7466.Oct 4, 1995 · N683UP · Boeing 747121 · Fuselage Main, Longeron/StringerSDR UPS404655Frame · crackedWHILE IN AMSTERDAM FOR C-CHECK, MAINTENANCE FOUND CRACK IN REINFORCEMENT ANGLE UNDER FRAME UPPER FLANGE, BS 1960 LBL 55. THE CRACK WAS FOUND OUT OF LIMITS. MAINTENANCE REPAIRED IAW SRM 51-40-03.Oct 3, 1995 · N683UP · Boeing 747121 · Fuselage Main, FrameSDR UPS404654Frame · crackedWHILE IN AMSTERDAM FOR C-CHECK, MAINTENANCE FOUND FRAME AND REINFORCEMENT ANGLE CRACKED ON BS 2000 LBL 54 UNDER FLOOR STRUCTURE. MAINTENANCE REPAIRED CRACK IAW SRM 51-40-03.Oct 3, 1995 · N683UP · Boeing 747121 · Fuselage Main, Frame
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