JASC 7250

Service difficulty reports · 3,625

Reports filed under 7250 · Turbine Section, 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 jasc_code = '7250'
  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 96ZZZX4265Seal · leakingNR 3 BEARING SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Dec 8, 1995 · N428MB · Bolkms BK117A3SDR 96ZZZX4264Seal Ring · wornSEAL RING WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH 2 EACH NEW UNITS, CORRECTED PROBLEM.Dec 8, 1995 · N428MB · Bolkms BK117A3SDR 96ZZZX4263Shroud · blade tip rubEXCESSIVE GP BLADE TIP RUB. REPLACED WITH NEW SHROUD UNIT, CORRECTED PROBLEM.Dec 8, 1995 · N428MB · Bolkms BK117A3SDR 96ZZZX4258Bearing · defectiveBEARING DEFECTIVE. REMOVED TO FACILITATE OTHER MAINTENANCE. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Dec 8, 1995 · N428MB · Bolkms BK117A3SDR 96ZZZX814Rotating Seal · flange crackedDURING SCHEDULED HOT SECTION INSPECTION, FOUND PART CRACKED AT FLANGE. THIS IS A CRITICAL LIFE-LIMITED COMPONENT. LIFE-LIMIT = 20,000 CYCLES. THIS IS THE 23RD MALFUNCTION/DEFECT REPORT SUBMITTED BY THIS REPAIR STATION ON THIS TOPIC.Dec 7, 1995SDR 96ZZZX487Seal · crackedDURING SCHEDULED HOT SECTION INSPECTION, FOUND SEAL CRACKED AT SEALING FLANGE. THIS IS A CRITICAL LIFE LIMITED COMPONENT. LIFE LIMIT IS 20,000 CYCLES. SUBMITTER SUGGESTS ALLIED SIGNAL ENGINEERING DETERMINE/CORRECT CAUSE OF CRACKING. NUMEROUS MALFUNCTION/DEDec 7, 1995SDR 96ZZZX1725Seal · flange crackedDURING SCHEDULED HOT SECTION INSPECTION, FOUND AIR SEAL CRACKED AT FLANGE. THIS IS A CRITICAL LIFE-LIMITED COMPONENT. LIFE-LIMIT - 20,000 CYCLES. SUBMITTER SUGGESTS ALLIED SIGNAL ENGINEERING DETERMINE AND CORRECT CAUSE OF CRACKING. THIS IS THE 23RD MALFUNCTDec 7, 1995SDR 96ZZZX1724Seal · flange crackedDURING SCHEDULED HOT SECTION INSPECTION, FOUND AIR SEAL CRACKED AT SEALING FLANGE. THIS IS A CRITICAL LIFE-LIMITED COMPONENT. LIFE-LIMIT IS 20,000 CYCLES. SUBMITTER SUGGESTS ALLIED SIGNAL ENGINEERING DETERMINE/CORRECT CAUSE OF CRACKING. THIS IS THE 22ND MDec 7, 1995SDR 95ZZZX7060Seal Ring · failedDURING TEAR DOWN OF ENGINE TO INVESTIGATE THE CAUSE OF HIGH OIL CONSUMPTION, THE NR 3 BEARING SEAL RING WAS FOUND LIBERATED FROM ITS SUPPORT (DUCT) ASSY, PN 75663U. ALL 30 RIVETS, PN AN123320, HAD FAILED UNDER MANUFACTURED HEAD. INVESTIGATION INTO CAUSES OF Dec 7, 1995SDR CA951206007Blades · damaged(CAN)DURING A THREE ENGINE FERRY FLIGHT ON TAKEOFF, A LOUD BANG WAS HEARD, FOLLOWED BY 1000 DEGREES C TIT INDICATION. THE THROTTLE WAS PULLED BACK AND NO OTHER INDICATIONS WERE NOTED. ON DESCENT, WHEN POWER WAS PULLED BACK, AN NTS OCCURRED WITH HIGH FUEL FLOW Dec 3, 1995 · Lkheed 382GSDR 96ZZZX26Disc · crackedHPT INSPECTION FOUND ON THE FORWARD OUTSIDE DIAMETER OF THE DISC IN THE RADIUSED PORTION, OVER AN 0.5 INCH WIDE BAND FOR 360 DEGREES, MULTIPLE CIRCUMFERENTIAL CRACKING CAUSED BY COALESCED CORROSION PITS APPROXIMATELY 0.007 INCH DEEP. CYCLES, 10,324.Dec 1, 1995 · Boeing 747*SDR 96ZZZX1386Turbine · over tempDURING NORMAL SHUT DOWN, PILOT ROLLED THROTTLE TO FLIGHT IDLE, NOTICED ENGINE OUT WARNING LIGHT, N1 DECAY, BUT TOT RISING. PILOT MOTORED ENGINE, BUT TEMPERATURE EXCEEDED 1,000 DEGREES CELSIUS. AIRCRAFT RIGGING CHECKED OK. REPLACED TURBINE AND G.P. FUEL CONTDec 1, 1995 · N911FTSDR HEEA956161Wheel · damagedENGINE REMOVED DUE TO LOUD ROAR AND WHINE FOLLOWED BY ENGINE CHIP LIGHT. UPON INSPECTION OF TURBINE PARTS NOTED THE FOLLOWING: RIM BREAKOUT OF 1 3/4" AND 1/4" OF THREE EACH BLADES ON 3RD STAGE WHEEL. SUSPECT CAUSE OF FAILURE TO BE A STRESS CRACK ORIGINATINGNov 29, 1995 · N27702 · Bell 206L1SDR HEEA956160Wheel · blade damageENGINE REMOVED DUE TO LOUD GRINDING NOISE, HIGH PITCH SQUEAL ACCOMPANIED BY TORQUE FLUCTUATIONS. UPON INSPECTION OF TURBINE PARTS NOTED THE FOLLOWING: RIM BREAKOUT OF 1 1/2" AND 1/4" OF TWO EACH BLADES ON 3RD STAGE WHEEL. SUSPECT CAUSE OF FAILURE TO BE A STNov 29, 1995 · N21240 · Bell 206L1SDR 96ZZZX1575Seal Ring · wornSEAL RING WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH 2 EACH NEW UNITS, CORRECTED PROBLEM.Nov 29, 1995 · N158BK · Bolkms BK117A3SDR 96ZZZX97Seal · crackedDURING SCHEDULED CAM INSPECTION, FOUND PART CRACKED AT FLANGE. THIS IS A MAIN ROTATING GROUP, CRITICAL LIFE-LIMITED COMPONENT. LIFE-LIMIT IS 20,000 CYCLES. SUGGEST ALLIED SIGNAL ENGINEERING DETERMINE AND CORRECT THE CAUSE OF THIS PROBLEM. THIS IS THE 21ST Nov 27, 1995SDR 96ZZZX1723Seal · flange crackedDURING SCHEUDLED CAM INSPECTION, FOUND AIR SEAL CRACKED AT FLANGE. THIS IS A MAIN ROTATING GROUP. CRITICAL LIFE-LIMIT IS 20,000 CYCLES. SUBMITTER SUGGESTS ALLIED SIGNAL ENGINEERING DETERMINE AND CORRECT THE CAUSE OF THIS PROBLEM. THIS IS THE 21ST MALFUNCTINov 27, 1995SDR 95ZZZX6874Wheel · rim break outLOUD GRINDING, HIGH PITCH SQUEAL ACCOMPANIED BY TORQUE FLUCTUATIONS. TEAR DOWN INSPECTION REVEALED 3RD STAGE WHEEL EXHIBITED RIM BREAK OUT OF 1.50 INCHES AND .25 INCH OF 2 EACH BLADES. SUSPECT CAUSE OF FAILURE TO BE A STRESS CRACK ORIGINATING ON THE LEADING Nov 26, 1995 · N21240 · Bell 206L1SDR 96ZZZX1621Rotor Assy · blade shiftROTOR ASSY FAILED SB LT101-72-10-0153. EXCESSIVE IBPT BLADE SHIFT NR 10 PLUS 0.024 INCH, NR 11 PLUS 0.012 INCH. REPLACED WTIH USED UNIT, CORRECTED PROBLEM. PART TOTAL CYCLES, 2410.2.Nov 24, 1995 · N17SJ · Bolkms BK117B1SDR 96ZZZX1564Shroud · blade rubEXCESSIVE GP BLADE TIP RUB. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Nov 24, 1995 · N17SJ · Bolkms BK117B1SDR 95ZZZX6935Shield · warpedDURING REPLACEMENT OF NR 1 NOZZLE, THE NR 1 NOZZLE SHIELD WAS FOUND WARPED. SENT IN FOR REPAIR ON ALLISON 250 REPORT NR A159679.Nov 24, 1995 · N4571V · Hughes 369DSDR 95ZZZX6934Combustion Liner · crackedFOUND CRACKS IN THE 1ST SECTION CONE BEYOND LIMITS. RETURNED LINER FOR OVERHAUL ON ALLISON 250, REPORT 159678.Nov 24, 1995 · N4571V · Hughes 369DSDR 95ZZZX6620Nozzle · crackedREPLACED NR 1 NOZZLE FOR CRACKS AND BURNING. PART SENT IN ON ALLISON 250 REPORT NR 159680.Nov 24, 1995 · N4571V · Hughes 369DSDR P5CA950844Turbine · failedWITH POWER STABLE AT 1.36 EPR AND NO THROTTLE MOVEMENT AT 26,000 FT CLIMBING TO 29,000 FT, NR 1 ENGINE APPEARED TO SURGE AND COMPRESSOR STALLED WITH A RAPID RISE IN EGT, 975 FOR 5 TO 6 SECONDS UNTIL THROTTLE WAS RETARDED. ENGINE WAS COOLED FOR 5 MINUTES AND SNov 23, 1995 · N850FT · Boeing 747122SDR CA951222011Pt Blades · liberated(CAN)#1 ENGINE EXPERIENCED AN IN FLIGHT SHUTDOWN. POST FLIGHT INSPECTION OF THE ENGINE REVEALED THAT THE 2ND STAGE POWER TURBINE BLADES HAD BEEN LIBERATED AT VARIOUS LENGTHS FROM ABOVE THE PLATFORM TO MID SPAN. POWER SECTION WAS STIFF TO ROTATE.Nov 23, 1995SDR 96ZZZX839Pt Disk · blade failureTHE POWER SECTION WAS HARD TO ROTATE WHEN BROUGHT INTO TEAR-DOWN INVESTIGATION AREA. PRE-INSPECTION REVEALED THE NR 2 STAGE 4 PT BLADES HAD FRACTURED AT THE ROOT, 6 ARE FRACTURED FROM .200 INCH TO .500 INCH IN FROM THE ROOT, THE REMAINING BLADES ARE FRACTUREDNov 23, 1995 · N65YV · Beech 1900DSDR 95ZZZX7037Pt Rotor · blade shiftTHIS PART WAS INSPECTED EARLY AT CONVENIENCE OF OPERATOR, TO MAINTAIN ACFT AVAILABILITY. DURING C/W ALLIED SIGNAL AEROSPACE (FORMERLY TEXTRON LYCOMING) SB LT-101-72-50-0153 AND BELL ASB 222-93-63, USING DIAL INDICATOR INSPECTION METHOD TO DETECT BLADE SHIFT, Nov 22, 1995 · N911RA · Bell 222BSDR 95ZZZX6622Turbine · nozzle crackedWHILE CHANGING NR 1 NOZZLE, IT WAS DISCOVERED THE NR 2 NOZZLE WAS CRACKED. UNIT WAS SENT IN FOR REPAIR.Nov 22, 1995 · N4571V · Hughes 369DSDR 95ZZZX6873Wheel · rim break outLOUD ROAR AND WHINE FOLLOWED BY ENGINE CHIP LIGHT. TEAR DOWN INSPECTION REVEALED 3RD STAGE WHEEL EXHIBITED RIM BREAK OUT OF 1.75 INCH AND .25 INCH OF 3 EACH BLADES. SUSPECT CAUSE OF FAILURE TO BE A STRESS CRACK ORIGINATING ON THE LEADING EDGE SIDE OF BREAK OUNov 20, 1995 · N27702 · Bell 206L1SDR CA960115022Blades · fractured(CAN)IN CRUISE A LOUD BANG WAS HEARD FOLLOWED BY VIBRATION ON #2 ENGINE. NP DECREASED, TORQUE REACHED 100 PERCENT AND ITT INCREASED. HEAVY WHITE SMOKE WAS REPORTED FROM THE TAIL PIPE. THE PILOT SHUTDOWN THE ENGINE. POST FLIGHT INSPECTION REVEALED THE #6/7 BEARNov 16, 1995SDR 96ZZZX1586Seal · leakingSEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Nov 16, 1995 · N7059N · Bolkms BK117B1SDR CA960103518Lp Turbine · damaged(CAN)WHILE CLIMBING THROUGH FL280 AFTER TAKEOFF, THE #2 ENGINE HAD AN IMMEDIATE POWER LOSS ACCOMPANIED BY A LOUD BANG AND HIGH EXHAUST GAS TEMPERATURE. THE CREW SHUT DOWN THE ENGINE AND THE #2 ENGINE FIRE BUTTON WAS PUSHED. INITIAL MAINTENANCE INVESTIGATION FNov 15, 1995 · Airbus A320211SDR 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 747121SDR 95ZZZX6895Nr 2 Nozzle · crackedAIRCRAFT POWER CHECK PROBLEM. FOUND CRACKED OUTERBAND AND BURNED VANE L.E. AND T.E.Nov 14, 1995 · N708AL · Skrsky S76ASDR 95ZZZX6834Blade · failedFL 24,000 FEET CRUISE - LOUD BOOM NOISE OCCURRED WITH VIBRATION FOLLOWING. RIGHT ENGINE WAS PULLED BACK TO IDLE BY CREW WHICH CUT DOWN ON VIBRATION LEVEL. ENGINE WAS SHUT DOWN AS PRECAUTIONARY MEASURE.Nov 13, 1995 · N1904G · Israel 1124ASDR 96ZZZX1614Rotor Assy · blade shiftROTOR ASSY FAILED SB LT101-72-10-0153. EXCESSIVE IBPT BLADE SHIFT. REPLACED WITH USED UNIT, CORRECTED PROBLEM.Nov 12, 1995 · N911BY · Bolkms BK117A4SDR 96ZZZX96Seal · crackedDURING CAM INSPECTION, FOUND SEAL CRACKED AT SEAL FLANGE IN 7 PLACES. THIS IS A CRITICAL MAIN ROTATING GROUP LIFE-LIMITED COMPONENT. CURRENT LIFE LIMIT IS 20,000 CYCLES. TOTAL CYCLES 7,894.Nov 11, 1995SDR 95ZZZX6601Seal · crackedDURING HOT SECTION INSPECTION, FOUND SEAL FLANGE CRACKED 8 PLACES. SUBMITTER STATED THIS IS A CRITICAL MAIN ROTATING GROUP LIFE-LIMITED COMPONENT. LIFE-LIMIT IS 10,000 CYCLES. SUBMITTER STATES THIS IS THE 20TH MALFUNCTION/DEFECT REPORT SUBMITTED REGARDING TNov 11, 1995SDR UIEA9502Blade · fractureENGINE, SN 455833, TEAR DOWN REVEALED CONSIDERABLE TURBINE DAMAGE. HPT STAGE 1 BLADES METALLURGICAL ANALYSIS FOR PRIMARY FAILURE MODE. ONE BLADE FOUND WITH FAILURE PATTERNS IN THE TRAILING EDGE AREA. BLADE, PN 9299M30G09R, SN KTWD2263, REPAIR HISTORY M1K-M2Nov 10, 1995 · N509MC · Boeing 747230BSDR 95ZZZX6886Nr 2 Nozzle · eroded vaneUPON DISASSEMBLY OF TURBINE, INSPECTION OF PARTS FOR LOW POWER FOUND BURNED AND ERODED VANE L.E. AND T.E.Nov 10, 1995 · N27554 · Bell 206L1SDR 95ZZZM749Turbine Blades · damagedHNL - DURING CLIMB, SHUT DOWN NR 1 ENGINE, S/N 4165, DUE TO COMPRESSOR STALL AND RISING EGT. FOUND METAL PARTICLES IN TAILPIPE AND TURBINE BLADE DAMAGE. REPLACED ENGINE AND ENGINE OPERATION CHECKED NORMAL.Nov 10, 1995 · N93104 · Boeing 747131SDR 95ZZZX68874th Stg Nozzle · crackedDURING PRE-FLIGHT OF AIRCRAFT, FOUND 4TH STAGE NOZZLE WITH CRACKED DIAPHRAGM.Nov 9, 1995 · N2785R · Bolkms BO105SSDR 95ZZZX68851st Nozzle · eroded valveUPON DISASSEMBLY OF TURBINE, INSPECTION OF PARTS FOR LOWER POWER FOUND BURNED AND ERODED VANE L.E. AND T.E.Nov 9, 1995 · N27554 · Bell 206L1SDR DL72W960701Turb Blades · failedON ENGINE DISASSY, FOUND ALL 4TH STG TURB BLADES FRACTURED NEAR PLATFORM. UNKNOWN BMOD/FOD NOTED ON 3RD STG TURB BLADE LEADING EDGES. EVIDENCE SUGGESTS THAT THE OBJECT(S) CAUSING THIS DAMAGE, ALSO CAUSED THE 4TH STAGE BLADE FRACTURE.Nov 7, 1995 · N831L · Boeing 7272Q8SDR DL72W954316Blade · failedON TAKEOFF, NR 3 ENGINE FLAMED-OUT, RETURNED PVR. INITIAL INSPECTION FOUND NR 3 TURNBINE BLADES DISINTEGRATED. REPLACED NR 3 ENGINE FOR RETURN TO SERVICE.Nov 7, 1995 · N831L · Boeing 7272Q8SDR CA951130023Bolt · fractured(CAN)A LOUD NOISE WAS HEARD FROM #1 ENGINE WITH A LOSS OF POWER DURING TAKEOFF. FIRE WAS REPORTED BUT NO FIRE WARNING WAS OBSERVED. THE FIRE BOTTLE WAS DISCHARGED AND THE AIRCRAFT RETURNED TO ITS POINT OF DEPARTURE. POST FLIGHT INSPECTION REVEALED 30 PERCENT Nov 7, 1995SDR 96ZZZX1585Rotor Assy · defectiveDUE SB LT101-72-10-0150. REQUIRES DISASSEMBLY AND INSPECTION OF THE ROTOR BROACH SLOTS FOR POSSIBLE CRACKS IN THE DISC/TENON AREA. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Nov 6, 1995 · N10UM · Bolkms BK117B1SDR CA951122009Nozzle · below specfs(CAN)POWER CHECKS BELOW SPECS. TURBINE ASSEMBLY REPLACED. AIRCRAFT RETURNED TO SERVICE.Nov 3, 1995 · Bell 206LSDR AWXA9500686Nr 6 Heat Shield · failedABQ- FLT 343 - EN ROUTE IAH-LAS, THE NR 2 ENGINE OIL QUANTITY BEGAN DECREASING RAPIDLY. CREW ELECTED TO DIVERT AIRCRAFT TO ABQ. AIRCRAFT ARRIVED AT GATE WITHOUT FURTHER INCIDENT. MAINTENANCE NOTED LESS THAN 1 QT OIL ON QUANTITY GAUGE, AND ALSO FOUND A PUDDLNov 2, 1995 · N183AW · Boeing 737277SDR 96ZZZX3725Blade · crackedENGINE DISASSEMBLY TO INVESTIGATE AND REPAIR TURBINE SECTION FAILURE REVEALED CAUSE TO BE FIRST STAGE ROTOR BLADE FAILURE. BLADE SEPARATED AT FIR TREE AIR PASSAGE. TURBINE SECTION COMPONENTS IN DOWNSTREAM GAS PATH EXPERIENCED SEVERE UNREPAIRABLE DAMAGE DUE TOct 28, 1995
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