JASC 8540
Service difficulty reports · 167
Reports filed under 8540 · Reciprocating Engine Rear 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 = '8540' 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.
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 = '8540' ORDER BY difficulty_date DESC
Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
SDR 95ZZZX6303Adapter Assy · failedTHE OPERATOR INCURRED A STARTER ADAPTER FAILURE THAT CONTAMINATED THE ENGINE. DISASSEMBLY OF THE ENGINE REVEALED THAT BEARING, PN 537721, HAD FAILED FIRST CAUSING THE STARTER ADAPTER TO BIND AS IT ROTATED WHICH CAUSED IT TO FAIL. THE ADAPTER HAD BEEN REMOVEDSDR 95ZZZX4496Idler Gear · teeth missingPILOT REPORTED BAD LT MAG DROP. LT MAG REMOVED AND VISUAL INSPECTION REVEALED MISSING TOOTH ON IDLER GEAR. ALL REMAINING TEETH FOUND TO BE DISTORTED. IDLER GEAR BOSS ON CRANKCASE FOUND LOOSE. LT BOLT SAFETY BROKEN. RT HAD STUD WITH COTTER PIN THROUGH NUT,SDR 95ZZZX5225Bolt · not markedORDER NEW CRANKSHAFT AND GEAR/CAMSHAFT ATTACHING BOLT. BOLT INSPECTED AND NO HEAD ID MARKINGS IAW AD 91-14-22 TITLED TO PREVENT LOOSENING OR FAILURE AT CRANKSHAFT GEAR RETAINING BOLT.SDR 95ZZZX3749Idler Shaft · studs brokeSTUDS, .3125 INCH, IN REAR OF CRANKCASE THAT HOLDS IDLER GEAR SHAFT BROKE WHICH LET THE IDLER GEAR GET BETWEEN CRANK AND CAMSHAFT WHICH CAME LOOSE AND WAS VERY NEAR FAILURE. ENGINE HAD 1,120 HOURS TOTAL SINCE NEW. THE STUDS IN THE REAR OF THE CASE SHOULD BE SDR 95ZZZX6557Indicator · defectiveWHILE CHECKING MAGNETO TO ENGINE TIMING, DISCOVERED WHEN THE TIMING MARK ON THE ALTERNATOR DRIVE SHEAVE, P/N 635165, WAS LINED UP WITH THE TIMING MARKS ON THE ENGINE TIMING INDICATOR PLATE, THE CRANKSHAFT POSITION WAS 10 DEGREES ADVANCED OF THE POSITION INDICASDR 95ZZZX1166Shaft Gear · failedDURING DISASSEMBLY OF THIS ENGINE, THE 'NEW STYLE' STARTER CLUTCH (REF: SB M92-10) GEAR GEETH WERE STARTING TO FAIL. ALSO, REF: CRITICAL SB 94-4.SDR 95ZZZX1165Shaft Gear · failedDURING DISASSEMBLY OF THIS ENGINE, THE 'NEW STYLE' STARTER CLUTCH (REF: SB M92-10) GEAR TEETH WERE STARTING TO FAIL. ALSO, REF: CRITICAL SB 94-4.SDR 95ZZZX1456Starter Adapter · failedAIRCRAFT LANDED AFTER DARK 2-9-95, WITH THE LEFT ENGINE SHUT DOWN. FOUND STARTER ADAPTER HAD TWO BROKEN TEETH AND METAL THROUGHOUT THE ENGINE. VERY ROUGH AIRCRAFT.SDR 95ZZZX1163Lock Plate · failedDURING PART 91 OPERATION, LEFT ENGINE QUIT RUNNING AND PILOT FEATHERED PROP AND LANDED AT AIRPORT. INSPECTION FOUND LOCK TAB FOR BOLT ON IDLE GEAR HAD BROKEN OFF AND BOLT BACKED OUT AND ENGINE JUMPED TIME AND QUIT.SDR 95ZZZX918Adapter · spalledINSPECTED THE STARTER ADAPTER SHAFT GEAR AND CRANKSHAFT GEAR ON BOTH ENGINES OF A CESSNA 421B IAW TCM SB CSB94-4. FOUND THE GEARS SPALLED AND PITTED BEYOND LIMITS. REPAIRED ENGINES BY INSTALLATION OF TCM KIT NR EQ6642. THE STARTER ADAPTER AND CRANKSHAFT GEASDR 95ZZZX917Adapter · spalledINSPECTED THE STARTER ADAPTER SHAFT GEAR AND CRANKSHAFT GEAR ON BOTH ENGINES OF A CESSNA 421B IAW TCM SB CSB94-4. FOUND THE GEARS SPALLED AND PITTED BEYOND LIMITS. REPAIRED ENGINES BY INSTALLATION OF TCM KIT NR EQ6642. THE STARTER ADAPTER AND CRANKSHAFT GEASDR 95ZZZX1095Gear · failedACFT ON LOCAL FLIGHT WHEN ENGINE QUIT AT 1,000 FEET AGL. EMERGENCY LANDING MADE WITH ACFT DAMAGE. INVESTIGATION FOUND RT MAG BROKEN AT BASE. BOLTS HOLDING GEAR TO CRANKSHAFT FAILED. STARTER AND CLUTCH FROZEN.SDR 95ZZZX1104Dampener · separatedFOUND METAL IN OIL. FOUND REAR ACCESSORY CASE JOURNAL HOLDING STARTER ADAPTER SHAFT SEVERELY WORN AND WALLOWED OUT. VISCOUS DAMPENER SEPARATED FROM HUB.SDR 95ZZZX6777Gear · wornWEAR FOUND ON VALVE TIMING SERRATED GEARS ON REAR CRANKSHAFT AND STARTER GEAR. SUBMITTER RECOMMENDS REMOVING TACHOMETER DRIVE AND INSPECT REAR CRANKSHAFT NUT FOR PROPER TORQUE AT EVERY ANNUAL INSPECTION.SDR 95ZZZX766Adapter · bearing failedTHE STARTER ADAPTER FORWARD SHAFT SUPPORT BEARING WAS FOUND IN THE OIL FILTER AND HAD DISPERSED INTO THOUSANDS OF PIECES. THE CASE WAS DAMAGED BY THE SHAFT SLAPPING AROUND. SUBMITTER BELIEVES THE DAMPENER WAS OLD AND POSSIBLY OUT OF BALANCE. THE ADAPTER IS SDR 95ZZZX742Shaft Gear · galled'NEW STYLE' STARTER CLUTCH SHAFT GEAR TEETH STARTING TO GALL. COMPLETE ENGINE FAILURE IS A RESULT OF THIS. REASON FOR 'NEW STYLE' CLUTCH IS TO ELIMINATE THIS GALLING PROBLEM.SDR 95ZZZX764Adapter · failedSTARTER ADAPTER FAILED. FOUND SPRING, PN 539800, BROKE AT LOCATION OF LOCK SCREW, PN 633845.
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