Continental IO-520 series

Service difficulty reports · 446

Newest first. General aviation reporting is voluntary.

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 engine_model_key = 'IO520'
  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 EY2R57093Pin · corrodedACTUATING PIN CORRODED ON SURFACE OF PIN. REPLACED. (X)Aug 1, 2000 · Cessna 210 · Propeller SystemSDR EY2R57093ANut · corrodedTHREADS ON BLADE RETENTION NUT CORRODED. REPLACED. (X)Aug 1, 2000 · Cessna 210 · Propeller Blade SectionSDR 20000712SH029Cooler · leakingCOOLER HAD RECEIVED PREVIOUS EPOXY REPAIRS. EPOXY FAILED DURING NORMAL USE. SUBMITTER RECOMMENDED ELIMINATING EPOXY USE IN OIL COOLERS AS EPOXY FAILURE IS COMMON OCCURRENCE WHEN USED TO REPAIR LEAKS IN OIL COOLERS. (X)Jul 12, 2000 · Cessna 206CESSNA · Engine Oil CoolerSDR 20000720SH036Capacitor · failedCUSTOMER REPORTED THE RIGHT MAGNETO FAILED. INVESTIGATION REVEALED THE POINTS WERE NOT OPENING. TCM SB 651 DESCRIBES ONE CAUSE FOR THIS TO BE CAPACITOR FAILURE CAUSING POINTS TO ARC, HEAT UP, AND MELT THE NYLON CAM FOLLOWERS. BECAUSE SHOP HAD JUST REPLACED Jun 28, 2000 · Beech 35BEECH · Magneto/DistributorSDR AU000508Control Cable · seized(AUS) RIGHT FUEL SELECTOR TELEFLEX CABLE FITTING BINDING AT SELECTOR END. (X)Jun 23, 2000 · Beech 58 · Fuel Selector/Shut-Off ValveSDR AU000509Manifold · failed(AUS) LEFT ENGINE EXHAUST MANIFOLDS TRANSPOSED. (X)Jun 23, 2000 · Beech 58 · Engine Collector/Tailpipe/NozzleSDR 20000707SH015Drive Gear · defectiveLONG LINEAR INDICATION ON SHAFT, POSSIBLE INCLUSION. (X)Jun 19, 2000 · Propeller GovernorSDR EY2R56491Hub · crackedCRACK FOUND IN NR 2 BLADE SOCKET BETWEEN 6-7 O''''CLOCK, ENGINE SIDE. (X)Jun 5, 2000 · Cessna 185 · Propeller Hub SectionSDR EY2R56491ABlade · crackedTWO EACH BLADES CRACKED IN THREAD AREA. (X)Jun 5, 2000 · Cessna 185 · Propeller Blade SectionSDR EY2R56491BNut · crackedBLADE NUT CRACKED IN THREAD AREA. (X)Jun 5, 2000 · Cessna 185 · Propeller Blade SectionSDR EY2R56492Nut · crackedBLADE NUT CRACKED IN THREAD AREA. (X)Jun 5, 2000 · Cessna 185 · Propeller Blade SectionSDR EY2R56492AHub · corrodedHUB CORRODED ON MOUNTING SURFACE BEYOND LIMITS. (X)Jun 5, 2000 · Cessna 185 · Propeller Hub SectionSDR EY2R56492BFerrule · corrodedFERRULE CORRODED IN THREADED AREA.Jun 5, 2000 · Cessna 185 · Propeller SystemSDR EY2R56492CCylinder · corrodedCYLINDER CORRODED ON INNER SURFACE BEYOND LIMITS.Jun 5, 2000 · Cessna 185 · Propeller SystemSDR 20000522SH001Housing · crackedTACHOMETER DRIVE HOUSING CRACKED AT OIL PRESSURE BOSS. BOSS ON DRIVE HOUSING NEEDS TO BE BEEFED UP. CRACKS DUE TO WEAK CASTING. (X)Apr 25, 2000 · N329H · Beech 58 · Reciprocating Engine Rear SectionSDR 20000508SH024Flyweight · crackedRELEVANT CRACK INDICATION ON BASE OF FLYWEIGHT DISC. (X)Apr 5, 2000 · Cessna 402C · Propeller GovernorSDR 20000508SH020Spark Plug · failedPISTON TOP BEGAN TO DISINTEGRATE CAUSING SEVERAL SPARK PLUG FAILURES AND ENOUGH POWER LOSS TO CAUSE A FORCED LANDING. (X)Mar 10, 2000 · N75703 · Cessna 207A · Spark Plug/IgniterSDR 20000719SH013Guide · inaccurateINTAKE GUIDE VARIANCE, 0.0020 INCH. (X)Feb 27, 2000 · Reciprocating Engine Cylinder SectionSDR 2003FA0001214Mount · crackedDURING AN ANNUAL, FOUND THE RT MAIN GEAR BOX STRUCTURE TO BE CRACKED. ALSO NOTED THAT THE RT GEAR WAS LOOSE IN CASTING.Feb 18, 2000 · N94204 · Cessna A185F · Accessory GearboxesSDR 20000719SH008Guide · inaccurateINTAKE GUIDE VARIANCE, 0.0020 INCH. (X)Feb 17, 2000 · Reciprocating Engine Cylinder SectionSDR 20000719SH009Guide · inaccurateINTAKE GUIDE VARIANCE, 0.0016 INCH. (X)Feb 17, 2000 · Reciprocating Engine Cylinder SectionSDR 20000719SH010Guide · inaccurateINTAKE GUIDE VARIANCE, 0.0015 INCH. (X)Feb 17, 2000 · Reciprocating Engine Cylinder SectionSDR 20000719SH011Guide · inaccurateINTAKE GUIDE VARIANCE, 0.0016 INCH. (X)Feb 17, 2000 · Reciprocating Engine Cylinder SectionSDR 20000719SH012Guide · inaccurateINTAKE GUIDE VARIANCE, 0.0018 INCH. (X)Feb 17, 2000 · Reciprocating Engine Cylinder SectionSDR 20000330SH011Bearing · crazedDURING ENGINE TEAR DOWN DUE TO SUDDEN STOPPAGE. INSPECTION OF THE BEARINGS FOUND 7 OUT OF 12 BEARING HALVES FOUND WITH EXCESSIVE CRAZING ON THE SURFACE. ENGINE WAS ASSEMBLED 12-28-99 AND PUT INTO SERVICE ON 1-29-00 AND WAS DISASSEMBLED 2-25-00. SUBMITTER STFeb 15, 2000 · N4667Q · Cessna 210L · Reciprocating Engine Power SectionSDR 99ZZZX4604Fuel Pump · leakingTHE FUEL PUMP 646212-1 USUALLY USED ON TCM ENGINES IO520. THIS FUEL PUMP IS ONE OF SEVERAL FUEL PUMPS FOUND TO LEAK PAST THE SEAL PN 646181. ALSO, NEW PRODUCTION OF THIS SEAL IS FOUND TO BE SMALLER THAN THE OLDER VERSION WHICH CAUSED IT NOT TO BE SEATED FIRMOct 27, 1999 · Engine Fuel PumpSDR 20000712SH036Cooler · leakingPART BEGAN LEAKING DURING NORMAL SERVICE DUE TO EPOXY REPAIR FAILURE. SUBMITTER RECOMMENDED ELIMINATING USE OF EPOXY REPAIR ON AND IN OIL COOLERS AS EPOXY REPAIR FAILURE IS VERY COMMON WHEN USED ON OIL COOLERS. (X)Jun 9, 1999 · Cessna 310 · Engine Oil CoolerSDR 99ZZZX1989Cylinder · mismanufacturedNATIONAL VENDOR SUPPLIED A NEW FACTORY IO520 CYLINDER. INSPECTION OF CARTON, NO SIGNS OF DAMAGE. INSPECTION OF CYLINDER SHOWS WHAT APPEARS TO BE A HAMMER BLOW TO THE INTAKE ROCKER BOSS MAKING A NEW CYLINDER SCRAP. VENDOR SUPPLIED ANOTHER NEW CYLINDER AND INFeb 22, 1999 · Reciprocating Engine Cylinder SectionSDR 98ZZZX3235Cylinder · separatedCYLINDER SEPARATION OCCURRED IN-FLIGHT. AIRCRAFT PUT ON GROUND SAFELY. SUBMITTER SUGGESTS MORE FREQUENT CYCLINDER INSPECTIONS. THIS IS THE 6TH CYLINDER ASSY OBSERVED HAVING SEPARATIONS SUCH AS THIS. POSSIBLY A 25 HOUR CHECK MIGHT FIND MORE DEFECTS SOONER.Aug 6, 1998 · N18252 · Amtr PARAKEET · Reciprocating Engine Cylinder SectionSDR 97ZZZX578Valve · defectiveINTAKE VALVE ON 470/520 SERIES ENGINES BUILT BY CONTINENTAL. THE VALVE FACE IS TOO SOFT AND SHOWS SEVERE WEAR. SUBMITTER CHECKED OVER 50 DIFFERENT CYLINDERS WITH HOURS RANGING FROM 150 HOURS TOTAL TIME TO 1500 HOURS TOTAL TIME AND ALL VALVES WITH THIS PART NJan 1, 1997 · Reciprocating Engine Cylinder SectionSDR 96ZZZX5291Cylinder · seat wornTHE AIRCRAFT ARRIVED FOR 100-HOUR INSPECTION. COMPRESSION CHECK SHOWED NR 4 CYLINDER 55/80. ALL OTHER CYLINDERS WERE IN THE MID 70'S. THE CYLINDER WAS REMOVED. EXHAUST VALVE AND SEAT WERE WORN EXCESSIVELY. THIS IS A FACTORY RE-MANUFACTURED ENGINE. ALSO, FSep 28, 1996 · N2FOR · Reciprocating Engine Cylinder SectionSDR 95ZZZX5925Distributor · brush looseMAG INOPERATIVE. FOUND DISTRIBUTOR SHAFT BLUE. OPENED MAG AND FOUND DISTRIBUTOR BRUSH LOOSE IN MAG CASE. FOUND DISTRIBUTOR GEAR HUB AND COIL FINGER DAMAGED BY ARCING. BRUSH EITHER FELL OUT OR WAS INSTALLED IMPROPERLY. MAG RAN SEVERAL HOURS USING BRUSH SPRSep 21, 1995 · Magneto/DistributorSDR 95ZZZX5137Rotor · defectiveEXHAUST VALVE ROTOR CAP WILL NOT ROTATE. THIS VALVE ROTOR WAS OUT OF A CYLINDER VALVE ASSEMBLY.Aug 31, 1995 · Reciprocating Engine Cylinder SectionSDR 95ZZZX5618Rotor Cap · defectiveEXHAUST VALVE ROTOR CAP WILL NOT ROTATE. THIS VALVE ROTOR WAS OUT OF CYLINDER VALVE ASSEMBLY.Aug 31, 1995 · Reciprocating Engine Cylinder SectionSDR 95ZZZX4393Rotor · defectiveFOUND EXHAUST VALVE ROTOR CAP WILL NOT ROTATE. THIS VALVE ROTOR WAS OUT OF A CYLINDER VALVE ASSY.Aug 11, 1995 · Reciprocating Engine Cylinder SectionSDR 95ZZZX3246Guide · out of limitsINSPECTION OF NEW PARTS FOUND 6 EACH INTAKE VALVE GUIDES DEFECTIVE OUT OF 6 EACH NEW TCM CYLINDERS. ALL GUIDES ARE OUT OF NEW LIMITS AND TAPERED FROM TOP TO BOTTOM. TOTAL OF 18 INTAKE GUIDES, PN 643766, REPORTED OUT OF LIMITS BY SUBMITTER.Jun 12, 1995 · Reciprocating Engine Cylinder SectionSDR 95ZZZX3247Guide · out of limitsSIX EACH EXHAUST VALVE GUIDES DEFECTIVE OUT OF 6 EACH NEW TCM CYLINDERS. ALL GUIDES ARE OUT OF NEW LIMITS AND TAPERED FROM TOP TO BOTTOM. TOTAL OF 18 EXHAUST GUIDES, PN 643767, REPORTED OUT OF LIMITS BY SUBMITTER.Jun 12, 1995 · Reciprocating Engine Cylinder SectionSDR 95ZZZX2547Valve Guide · wornSIX EACH INTAKE VALVE GUIDES OUT OF NEW LIMITS, .0005 INCH (ONE-HALF THOUSANDTHS) AND TAPERED FROM TOP TO BOTTOM.May 9, 1995 · Reciprocating Engine Cylinder SectionSDR 95ZZZX2548Valve Guide · wornSIX EACH EXHAUST VALVE GUIDES OUT OF NEW LIMITS, .0006 (SIX-TENTHS OF ONE THOUSANDTH).May 9, 1995 · Reciprocating Engine Cylinder SectionSDR 95ZZZX2406Cylinder · head separationCYLINDER HEAD SEPARATED FROM CYLINDER BARREL IN-FLIGHT. THE ENGINE KEPT RUNNING, PILOT REDUCED POWER AND LANDED ACFT WITH NO OTHER DAMAGE TO ENGINE OR AIRCRAFT. THE CYLINDER, HEAD, AND PISTON ARE AT SHOP FOR INSPECTION.Apr 3, 1995 · N8244J · Piper PA60601P · Reciprocating Engine Cylinder SectionSDR 95ZZZX2660Collar · out of specOIL TRANSFER COLLAR IS OUT OF SPECIFICATIONS. THIS PART WOULD HAVE CAUSED AN ENGINE FAILURE.Jan 30, 1995 · Reciprocating Engine Power SectionSDR 95ZZZX2662Intake Pipe · crackedINDUCTION PIPE CRACKED, APPROXIMATELY 1.50 INCHES LONG.Jan 30, 1995 · Reciprocating Engine Cylinder SectionSDR 95ZZZX586Cylinder · defectiveROCKER ARM BOSS HELI-COIL THREADS STRIPPED. HELI-COIL WAS LOOSE IN THREADS.Jan 16, 1995 · Reciprocating Engine Cylinder SectionSDR 95ZZZX488Rotor Cap · defectiveTHREE EACH VALVE ROTOR CAPS RECEIVED ON 3 NEW CYLINDERS. TWO OF THE 3 WILL NOT ROTATE. ONE OF THE 3 HAS NO INTERNAL PARTS. ONE VALVE ROTOR CAP BROKEN. TOTAL TIME 350 HOURS.Jan 5, 1995 · Reciprocating Engine Cylinder SectionSDR 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.Jan 5, 1995 · Reciprocating Engine Power SectionSDR 95ZZZX490Valve · defectiveINSPECTION FOUND TWO INTAKE VALVES DEFECTIVE. ONE VALVE HAS OUT-OF-ROUND STEM. ONE VALVE HAS WARPED VALVE HEAD.Jan 5, 1995 · Reciprocating Engine Cylinder Section
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