Lycoming IO-540-AC1A5

Service difficulty reports · 45

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 = 'IO540AC1A5'
  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 2024FA0000578Magneto · failedMAGNETO FAILEDMay 20, 2024 · N6188Q · Cessna 206H · Magneto/DistributorSDR 2024FA0000078Blade · looseAFTER A FLIGHT A MECHANIC NOTICED THE SNAP RING AT THE BASE OF ONE OF THE PROPELLER BLADES WAS NOT IN ITS GROOVE AT THE BLADE ROOT BUT WAS DISLODGED AND WEDGED AGAINST THE SPINNER. THE BLADE WAS FOUND TO BE LOOSE IN THE HUB AND COULD BE MOVED AT THE BLADE TIPJan 29, 2024 · N809HW · Cessna 206H · Propeller Blade SectionSDR 2024FA0000572Magneto · failedMAGNETO FAILEDJan 29, 2024 · N6188Q · Cessna 206H · Magneto/DistributorSDR 2018FA0000345Intake Valve · brokenENGINE LOST POWER IN FLIGHT, RESULTING IN AN EMERGENCY LANDING. INSPECTION REVEALED THAT THE NUMBER 1 CYLINDER INTAKE VALVE FAILED, DAMAGING THE PISTON.Aug 3, 2018 · N9536F · Cessna 206H · Reciprocating Engine Power SectionSDR 2017FA0000289Pump · shearedVACUUM PUMP FAILED IN FLIGHT. CAUSED INSTRUMENT OPERATIONAL FAILURE OF SEVERAL INSTRUMENTS. OVERHAULED.Jul 18, 2017 · N809Q · Cessna 206H · Vacuum SystemSDR 2017FA0000080Pump · failedPILOT REPORTED MINOR ENGINE SURGING DURING FLIGHT. AFTER TROUBLESHOOTING AND REPAIRS, FOUND TO BE THE ENGINE DRIVEN FUEL PUMP INTERMITTENTLY DROPPING FUEL PRESSURE. ON INVESTIGATION THE OIL SEAL IN THE DIAPHRAGM PUMP WAS FOUND TO BE LEAKING AND OIL WAS IN THFeb 14, 2017 · N229E · Cessna 206H · Reciprocating Engine Oil SystemSDR 2017FA0000028Pushrod · unserviceablePUSHRODS INSPECTED PER SA-167A AND FOUND THAT ALL PUSHROD ENDS EXCEED THE LIMITATIONS OF THE SA AND ARE ORDERED AOG TO REPLACE ALL PUSHRODS AND ROCKER ARMS.Jan 25, 2017 · N962PB · Cessna 182T · Reciprocating Engine Cylinder SectionSDR 2016FA0000592Pushrod · scoredONE ROCKER ARM IS SHOWING SIGNS OF SCORING ALONG WITH A PUSHROD, AND A HYDRAULIC LIFTER CAP. REPLACED IAW SA-167A.Dec 6, 2016 · N249DB · Cessna 206H · Reciprocating Engine Cylinder SectionSDR 2016FA0000544Transponder · failedTRANSPONDER FAILED WITH A PUFF OF SMOKE. FOLLOWED BY A FAIL MESSAGE. UNIT SECURED AND LANDED.Oct 26, 2016 · N565SA · Cessna 206H · Navigation SystemSDR 2P9A3229Spark Plug · brokenDURING CRUISE FLIGHT, THE PILOT EXPERIENCED A SUDDEN RISE IN EGT AND CHT FOR NR 4 CYLINDER AND THEN EXPERIENCED A ROUGH RUNNING ENGINE. PILOT MADE A PRECAUTIONARY LANDING TO GET THE PLANE INSPECTED. FOUND THE SPARK PLUG BROKEN.Oct 1, 2016 · N267MC · Cessna 206H · Spark Plug/IgniterSDR 2016FA0000374Actuator · failedFROM SAFETY REPORT, AIRCRAFT ELEVATOR TRIM WHEEL FAILURE ON DEPARTURE. ATTEMPTED ELEVATOR TRIM INPUT, NOSE UP, USING THE YOKE TRIM SWITCH AND NOTICED NOTHING HAPPENED. CHECKED AUTOPILOT CB AND IT WAS STILL IN. USED THE ELEVATOR TRIM WHEEL AND IT WOULD SPIN Jul 27, 2016 · N590MM · Cessna 206H · Elevator Tab Control SystemSDR 2016FA0000325Alternator · brokenOIL LEAKING ONTO RIGHT SIDE OF AIRCRAFT UNDERBELLY OBSERVED IN POSTFLIGHT. INSPECTED ENGINE FOR OIL LEAK. INSPECTED NR 2 ALTERNATOR. FOUND MOUNTING BASE OF ALTERNATOR IS CRACKED AND SOME OIL LEAKING OUT OF ALTERNATOR.Jul 6, 2016 · N590MM · Cessna 206H · AC Generator-AlternatorSDR 2015FA0000219Connector · meltedALL AIRCRAFT SYSTEMS POWERED BY ESSENTIAL BUS 2 FAILED DURING TAKEOFF WITHOUT TURNING THE SWITCH OFF. ITEMS ON BUS 2 INCLUDE: THE TURN COORDINATOR, NAV LIGHTS, INTERIOR LIGHTS, STROBE LIGHTS, TAXI LIGHT, PITOT HEAT, TRANSPONDER, AND AUTOPILOT ALL FAILED. THEMay 20, 2015 · N250E · Cessna 206H · Electrical Power System WiringSDR 2015FA0000175Valve · brokenUPON LANDING THE PILOT NOTICED THAT THE WAS PULLING TO THE LEFT. THE TIRE WAS REMOVED AND FOUND THAT THE VALVE STEM HAD FRACTURED AND DEPARTED APPROXIMATELY .2500 DOWN FROM THE END. THE SUBSEQUENT LOSS OF AIR FROM THE TIRE CAUSED THE TIRE TO GO FLAT WHICH IN Apr 30, 2015 · N940H · Cessna 206H · Tire TubeSDR 2015FA0000125Connector · meltedALL APPLIANCES AND SYSTEMS ON ACFT ESSENTIAL BUS 2 POWERED OFF WITH THE BUS 2 SWITCH ON. ITEMS ON BUS 2 INCLUDE: THE TURN COORDINATOR, NAV LIGHTS, INTERIOR LIGHTS, STROBE LIGHTS, TAXI LIGHT, PITOT HEAT, TRANSPONDER, AND AUTOPILOT ALL FAILED. THE 40 AMP BUS 2 Apr 2, 2015 · N8211P · Cessna 206H · Electrical Power System WiringSDR 2015FA0000126Connector · meltedALL APPLIANCES AND SYSTEMS ON ACFT ESSENTIAL BUS 2 POWERED OFF WITH THE SWITCH ON. ITEMS ON BUS 2 INCLUDE: THE TURN COORDINATOR, NAV LIGHTS, INTERIOR LIGHTS, STROBE LIGHTS, TAXI LIGHT, PITOT HEAT, TRANSPONDER, AND AUTOPILOT ALL FAILED. THE 40 AMP. BUS 2 CIRCUApr 2, 2015 · N238D · Cessna 206H · Electrical Power System WiringSDR LC1R20140305001Pressure Switch · leakingAD 2013-11-11 HAD BEEN COMPLIED WITH BY IDENTIFYING THE PART NUMBER OF THE OIL PRESS SWITCH AS 83278 WHICH WOULD GIVE IT A 3000 HOUR SERVICE LIFE. DURING THE ANNUAL INSPECTION IT WAS DISCOVERED THAT THE SWITCH WAS LEAKING QUITE BADLY FROM THE CONNECTOR WELL AMar 5, 2014 · N125MD · Cessna 206H · Engine Oil PressureSDR 2013FA0000231Bulkhead · crackedAIRCRAFT CAME INTO THE MX SHOP FOR AN ANNUAL INSPECTION. THE ACFT IS ON A SET OF AMPHIBIOUS FLOATS, MODEL 3450. AFTER REMOVING THE RIGHT FLOAT BUMPER, 2 CRACKS WERE DISCOVERED ON THE BULKHEAD NOSE ASSY. PN 30A01000-329. THE CRACK STARTED FROM EACH OF THE BFeb 26, 2013 · N5235C · Cessna 206H · Wheel/Ski/FloatSDR 2012FA0000733Intake Valve · separatedAT CRUISE FLIGHT, PILOT EXPERIENCED A BANG AND LOSS OF ENGINE POWER. ACFT LANDED SAFELY AT NEARBY AIRPORT. DURING COMPRESSION CHECK IT WAS FOUND THAT NR 6 CYL HAD NO COMPRESSION. CYLINDER WAS REMOVED AND FOUND INTAKE VALVE HAD BROKEN AND WEDGED VALVE FACE IJul 29, 2012 · N206BC · Cessna 206H · Reciprocating Engine Cylinder SectionSDR 2011FA0000593Piston Pin · missingBOTH PISTON PIN PLUGS WERE OMITTED FROM A CYLINDER DURING ENGINE ASSEMBLY AT THE FACTORY. DURING AN ANNUAL INSPECTION, THE COMPRESSION TEST INDICATED NO PRESSURE BEING HELD IN NR 4 CYLINDER. WHEN THE CYLINDER WAS REMOVED FOR REPAIR, THE PISTON PIN PLUGS WERESep 7, 2011 · N109P · Cessna 206H · Reciprocating Engine Power SectionSDR 2009FA0000024Servo · leakingFUEL SERVO LEAKED WHILE ACFT WAS PARKED OVERNIGHT. THE MIXTURE WAS IN CUT OFF POSITION. FLIGHT MANUAL, SEC 4, NORMAL PROCEDURES PAGE 4-23 SECURING ACFT NR 10 STATES: FUEL SELECTOR VALVE RT OR LT TO PREVENT CROSS FEEDING. IF THE FUEL SELECTOR VALVE WAS TURNEDec 4, 2008 · N137P · Cessna 206H · Fuel Control/Reciprocating EnginesSDR 2008FA0000212Gasket · unknownINSPECTED FUEL SERVO PLUG IAW SBPRS-107, REVISION 1, DATED MARCH 6, 2008. NO DAMAGE FOUND ON THE THREADS OF THE PLUG OF THE SERVO UNIT. INSTALLED PLUG AND SAFETIED IAW INSTRUCTIONS.Mar 19, 2008 · N2446X · Cessna 206H · Fuel Control/Reciprocating EnginesSDR 2006FA0000357Servo · inoperativeAIRCRAFT LANDED AND ENGINE QUIT. TO RESTART ENGINE MIXTURE HAD TO PULL MIXTURE BACK TO .5 INCH OF IDLE CUT TO KEEP ENGINE RUNNING. TRIED TO ADJUST IDLE MIXTURE WITHOUT SUCCESS. AT THE ADJUSTMENT LEANEST SETTING THERE WAS STILL A 600 RPM RAISE WHEN MIXTURE PMar 13, 2006 · N236KS · Cessna 206H · Fuel Controlling SystemSDR 2006FA0000275Alternator · burnedBATTERY TERMINAL LUG BURNT OFF DUE TO SHORT CAUSED BY TERMINAL ON WIRE HARNESS BREAKING OFF. THIS CAUSED THE ALTERNATOR CONTROL UNIT TO FAIL (SMOKE) AND HEAVY ARCING AT TERMINAL LUG. THERE WAS AN INDICATION OF NOT CHARGING ON G-1000 MFD AND PFD SCREENS. THIMar 7, 2006 · Cessna 206H · AC Generation SystemSDR CA060105004Control Cable · frayedWATER RUDDER STEERING CABLES ARE FRAYED WHERE IT ENTERS THE SIDE OF THE FLOAT. THE MAIN CAUSE OF THIS IS A MISALIGNMENT OF THE HOLE ON THE SIDE OF THE FLOAT TO THE ACTUAL POSITIONING OF THE RUN. IN SOME CASES, THE CABLE HAD CUT A 1/4" SLOT ON THE FLOAT SIDE Jan 5, 2006 · Cessna 206H · Wheel/Ski/FloatSDR 2004FA0000861Wire · burnedPILOT REPORTED AN ALTERNATOR FAILURE. REMOVED ENGINE COWLING AND FOUND THE POWER WIRE AND THE GROUND WIRE FOR THE ALTERNATOR WERE BROKEN IN HALF ABOUT 3 INCHES FROM THE TERMINALS ON THE ALTERNATOR. THE ENDS OF BOTH WIRES WERE MELTED, SUSPECTED FROM ARCING. Oct 31, 2004 · N21076 · Cessna 206H · Electrical Power System WiringSDR 2004FA0000649Sump · crackedDURING AN ANNUAL INSPECTION THE ENGINE OIL SUMP WAS FOUND CRACKED IN THE LT REAR STUD BOSS WHERE THE STUD US THREADED INTO THE SUMP.Aug 19, 2004 · N242ME · Cessna 206H · Reciprocating Engine Oil SystemSDR 2004FA0000652Reservoir · leakingRESERVOIR FUEL TANKS BELOW FUEL SELECTOR WAS LEAKING FUEL FROM A SEEM WELD THAT HAD CRACKED. FOUND DURING ROUTINE WALK AROUND INSPECTION. THE LEAK WHEN FIRST NOTICED WILL INDICATE THE FUEL PEDCOK IS LEAKING UNDER THE BELLY OF THE AIRCRAFT FURTHER INSPECTION May 10, 2004 · N72635 · Cessna 206H · Fuel StorageSDR 2003FA0001061Distributor Blk · burnedDISTRIBUTOR BLOCK AND GEAR ASSEMBLY BURNED UP.Jul 25, 2003 · N3530E · Cessna 206H · Magneto/DistributorSDR 2002FA0000551Gasket · failedDURING CRUISE FLIGHT LOST OIL PRESSURE INDICATION, MADE A PRECAUTIONARY LANDING ON A SNOW COVERED REMOTE RUNWAY, AIRCRAFT NOSED DOWN AND HAD A PROP STRIKE, BENDING BLADES. THE MECHANIC REMOVED THE ENGINE, DISCOVERED THE LOWER VACUUM PUMP GASKET WAS BLOWN OUT.Apr 1, 2002 · N7254H · Cessna 206H · Reciprocating Engine Oil SystemSDR 20001222SH012Gear · spalledDURING INSP C/W AD 91-14-22 AND LYC SB 475 REV A, NO DAMAGE FOUND TO CRANKSHAFT COUNTERBORE RECESS, ALIGNMENT DOWEL, RETAINING BOLTS AND THREADS. UPON INSP OF CRANKSHAFT GEAR TEETH, SEVERAL WERE FOUND TO HAVE LINEAR PTTING WHICH APPEARED TO BE CAUSED BY PLATIDec 22, 2000 · N7273Q · Cessna 206H · Reciprocating Engine Power SectionSDR 20001017SH035Pump · shearedRIGHT VACUUM PUMP FAILED, DRIVESHAFT SHEARED. (X)Aug 19, 2000 · N7273Q · Cessna 206H · Vacuum Distribution SystemSDR 20001013SH023Pump · shearedRIGHT VACUUM PUMP FAILED, DRIVESHAFT SHEARED. (X)Aug 14, 2000 · N2312V · Cessna 206H · Vacuum Distribution SystemSDR 20000809SH027Support Bracket · incorrectDURING ROUTINE INSPECTION, FOUND THE ALTERNATOR BELT DRIVE SUPPORT MISALIGNED WITH THE ALTERNATOR PULLEY CAUSING THE BELT TO SLIP PARTIALLY OFF OF THE ALTERNATOR PULLEY. FURTHER INVESTIGATION DETERMINED THE INCORRECT STARTER RING GEAR SUPPORT, PN 31M22045, WAJul 14, 2000 · N7254H · Cessna 206H · Alternator-Generator DriveSDR 20000720SH019Engine · failedPILOT REPORTED ENGINE SURGING ON TAKEOFF WITH SIGNIFICANT FUEL FLOW FLUCTUATION WHICH WAS CORRECTED WITH A DECREASE IN ENGINE POWER BY ADJUSTMENT OF THE PROP CONTROL AND ACTIVATION OF THE STANDBY ELECTRIC FUEL PUMP. POST-GROUND RUNS DUPLICATED THE PROBLEM, BUJun 5, 2000 · N7281M · Cessna 206H · Engine (Reciprocating)SDR 20000720SH016Fuel Line · contaminatedPILOT REPORTED ENGINE SURGING ON TAKEOFF WITH SIGNIFICANT FUEL FLOW FLUCTUATION WHICH WAS CORRECTED WITH A DECREASE IN ENGINE POWER BY ADJUSTMENT OF THE PROP CONTROL AND ACTIVATION OF THE STANDBY ELECTRIC FUEL PUMP. POST-GROUND RUNS COULD NOT DUPLICATE THE PRMay 3, 2000 · N7254H · Cessna 206H · Aircraft Fuel SystemSDR 20000720SH018Engine · failedPILOT REPORTED ENGINE SURGING ON TAKEOFF WITH SIGNIFICANT FUEL FLOW FLUCTUATION WHICH WAS CORRECTED WITH A DECREASE IN ENGINE POWER BY ADJUSTMENT OF THE PROP CONTROL AND ACTIVATION OF THE STANDBY ELECTRIC FUEL PUMP. POST-GROUND RUNS COULD NOT DUPLICATE THE PRApr 25, 2000 · N7281M · Cessna 206H · Engine (Reciprocating)SDR 20000802SH010Governor · leakingDURING 100-HOUR INSPECTION, DISCOVERED PROPELLER GOVERNOR LEAKING FROM PLUG LOCATED ON THE TOP OF THE GOVERNOR. (X)Mar 22, 2000 · N2312V · Cessna 206H · Propeller GovernorSDR 20000620SH016Line · chafed**ISAAC, NADA, PART NAME, ETC.***FOUND FUEL PRESSURE LINE, PN 1250990-16, AND OIL PRESSURE LINE, PN 1250990-15, RUBBING IN ENGINE COMPARTMENT. THESE LINES RUN FROM FUEL DISTRIBUTOR MANIFOLD TO RT REAR BAFFLE AND RT FRONT OIL PASSAGE TO RT REAR BAFFLE. OIL PREMar 17, 2000 · N950HP · Cessna 206H · Engine Fuel DistributionSDR 20000802SH011Line · damagedDURING A 100-HOUR INSPECTION, FOUND FUEL LINE FROM FUEL BOOST PUMP TO LT HEADER TANK LEAKING AT THE HEADER TANK FITTING. UPON REMOVAL OF LINE, DISCOVERED DAMAGED FLARE. AIRCRAFT TT 288.7 HOURS. (X)Mar 13, 2000 · N7254H · Cessna 206H · Aircraft Fuel Distribution SystemSDR 20000802SH012Pump · inoperativePILOT REPORTED RIGHT VACUUM PUMP INOPERATIVE, ANNUNCIATOR LIGHT ILLUMINATED DURING FLIGHT. UPON REMOVAL OF THE VACUUM PUMP, DISCOVERED THE DRIVE COUPLING SHAFT SHEARED. (X)Mar 6, 2000 · N7273Q · Cessna 206H · Vacuum Distribution SystemSDR 20000802SH013Line · damagedDURING THE AIRCRAFT''S FIRST 100-HOUR INSPECTION, DISCOVERED FUEL LEAK AT FUEL SELECTOR VALVE AROUND FITTING ON FUEL LINE FROM SELECTOR TO LT HEADER TANK. UPON REMOVAL OF LINE, DISCOVERED DAMAGED FLARE. TOTAL AIRCRAFT TIME: 98.6 HRS. (X)Feb 23, 2000 · N7281M · Cessna 206H · Fuel Selector/Shut-Off ValveSDR 20000518SH013Circuit Breaker · failedDURING TROUBLESHOOTING OF KING KAP-140 AUTOPILOT SYSTEM, FOUND AUTOPILOT CIRCUIT BREAKER TO BE THE ''NON-PULLABLE'' TYPE CONTRARY TO THE PILOT OPERATING HANDBOOK EMERGENCY PROCEDURES FOR AUTOPILOT RUNAWAY **TONY, ISAAC PUT ENG IN SYS**TRIM INDICATION. UPON FLFeb 15, 2000 · N7273Q · Cessna 206H · Autopilot SystemSDR 20000518SH015Wire · shortedPILOT REPORTED SPARKS COMING FROM UNDER THE INSTRUMENT PANEL UPON ENERGIZING THE IGNITION SWITCH. UPON FURTHER INVESTIGATION, FOUND THE WIRE BUNDLE FOR THE CIRCUIT BREAKERS ADJACENT TO THE IGNITION SWITCH WAS TOO LONG AND A WIRE IN THE BUNDLE HAD CHAFED ON ANFeb 11, 2000 · N2312V · Cessna 206H · Ignition System WiringSDR 20000518SH014Shroud · crackedDISCOVERED OIL LEAK IN ENGINE COMPARTMENT COMING FROM RIGHT SIDE PUSH ROD TUBE SHROUD ON NR 5 CYLINDER ASSEMBLY. ON FURTHER INSPECTION, TUBE WAS FOUND CRACKED APPROXIMATELY ONE INCH DIAGONALLY THEN EXTENDING AROUND THE CIRCUMFERENCE OF THE TUBE (APPROX HALF WFeb 1, 2000 · N7281M · Cessna 206H · Reciprocating Engine Cylinder Section
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