JASC 8520
Service difficulty reports · 2,214
Reports filed under 8520 · Reciprocating Engine Power 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 = '8520' 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 = '8520' 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 96ZZZX4737Crankcase · crackedWHILE TROUBLESHOOTING OIL LEAK, FOUND 3 INCH CRACK RUNNING FROM TOP CENTER BOLT ON CRANKCASE DOWN TO BASE OF NR 3 CYLINDER.SDR 95ZZZX1537Cam · failureFLT 60 - SHUT DOWN NR 1 ENGINE DUE TO LOSS OF BMEP AT 2330Z. REPLACED NR 1 ENGINE.SDR 95ZZZX1149Camshaft · brokenIN-FLIGHT ENGINE SHUT DOWN. CHECKED PROBLEM AND FOUND NO MOVEMENT IN VALVE TRAIN, ETC., WHEN PROP MOVED. PULLED ENGINE AND SENT BACK TO OVERHAUL AGENCY. VERIFIED UPON DISASSEMBLY THAT CAMSHAFT WAS BROKEN NEAR GEAR END.SDR 95ZZZX2660Collar · out of specOIL TRANSFER COLLAR IS OUT OF SPECIFICATIONS. THIS PART WOULD HAVE CAUSED AN ENGINE FAILURE.SDR 95ZZZX954Bolt · brokenDURING ROUTINE MAINTENANCE, AN OIL LEAK WAS NOTED BETWEEN THE NR 2 CYLINDER AND THE OIL COOLER. FURTHER INSPECTION REVEALED LOWER AFT THROUGH-BOLT BROKEN APPROXIMATELY ONE-THIRD ITS LENGTH. REPLACEMENT BOLT WAS A SLIGHTLY DIFFERENT DESIGN. ENGINE TIME SINCESDR 95ZZZX637Crankshaft · brokeWHILE IN-FLIGHT, CATASTROPHIC FAILURE -- CRANKSHAFT BROKE CLEAN IN HALF AT NR 3 CONN ROD JOURNAL. SUSPECT HEAT/FATIGUE CRACK, OR IMPROPER UNDERSIZING PROCESS.SDR 95ZZZX689Connect Rod · brokeNR 6 CYLINDER CONNECTING ROD ASSY, PN 646476, BROKE MIDWAY DOWN ROD. AIRCRAFT WAS IN LEVEL FLIGHT AT 3,000 AGL. FIFTEEN MINUTES AFTER TAKEOFF, CAUSE UNKNOWN.SDR 95ZZZX746Stud · shearedAIRCRAFT MADE AN EMERGENCY LANDING DUE TO PROBLEM WITH LT ENGINE. 1) INVESTIGATION REVEALED NR 5 CYL TOP 4 CYL HOLD-DOWN STUDS SHEARED OFF AND MOVEMENT OF CYL TOP AWAY FROM ENG CASE CAUSED A LARGE CRACK IN THE ENG CASE COMING FROM LOWER CYL FLANGE AREA. 2) SDR 95ZZZX745Stud · shearedAIRCRAFT MADE AN EMERGENCY LANDING DUE TO PROBLEM WITH LT ENGINE. 1) INVESTIGATION REVEALED NR 5 CYL TOP 4 CYL HOLD-DOWN STUDS SHEARED OFF AND MOVEMENT OF CYL TOP AWAY FROM ENG CASE CAUSED A LARGE CRACK IN THE ENG CASE COMING FROM LOWER CYL FLANGE AREA. 2) SDR 95ZZZX489Retain Plate · defectiveINSPECTION FOUND 12 EACH TORSIONAL DAMPENER RETAINING PLATES FAULTY. THEY WERE MARKED BY CONT. AS REJECT PARTS, BUT SHIPPED TO US AS AIRWORTHY PARTS.SDR 95ZZZX410Connect Rod · wrong boltFOLLOWING CYLINDER REMOVAL, FOUND P/N 75061 CONNECTING ROD BOLTS HAD BEEN INSTALLED INSTEAD OF P/N 75060 BOLTS. SUGGEST ALL PARTS AND NUMBERS BE LISTED IN THE LOG BOOKS AT OVERHAUL.SDR 95ZZZX831Crankshaft · high runoutENGINE WAS DISASSEMBLED FOR REPAIR OF CRACKED CRANKCASE. INSPECTION OF CRANKSHAFT 631716 REVEALED HIGH RUN-OUT OF ALL MEASUREMENT POINTS, BUT NO CRACKS. ENGINE HAS NO PROP STRIKE HISTORY. IT WAS ALSO NOTED THAT LARGE FLAKES OF NITRIDED MATERIAL HAD CHIPPED SDR 95ZZZX811Crankcase · cyl separatedAFTER TAKEOFF, PILOT NOTICED ROUGHNESS IN RIGHT ENGINE, HE REDUCED POWER, ENGINE RAN SMOOTH FOR A SHORT TIME THEN BECAME ROUGH AGAIN. AT THIS TIME, OIL WAS NOTED ON THE TOP OF RIGHT COWL. THE PILOT FEATHERED THE ENGINE AND LANDED. NR 2 CYLINDER WAS FOUND SESDR 95ZZZX761Crankshaft · dowel missingDURING ANNUAL INSPECTION WHEN INSPECTING ENGINE CRANKSHAFT EXPOSED, NOTED THE 2 DOWEL HOLES IN THE CRANKSHAFT FLANGE HAD NO VISIBLE DOWELS INSTALLED. UPON PROPELLER REMOVAL FOR FURTHER INSPECTION, NO DOWELS WERE FOUND INSTALLED IN PROPELLER HUB. DOWELS WERE
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