# Service difficulty reports: Lycoming TIO-540-AK1A A list on [Lycoming TIO-540-AK1A](https://openairdocs.org/engine/lycoming-tio-540-ak1a.md). Newest first. General aviation reporting is voluntary. - [SDR 2024FA0000740](https://openairdocs.org/sdr/2024FA0000740.md): Intake Pipe · loose · Sep 26, 2024 · N2155J · Cessna T182T · Reciprocating Engine Cylinder Section > MY SHOP HAS SEEN TWO OF THESE ISSUES IN A VERY SHORT TIME ON TWO DIFFERENT AIRCRAFT. THE FIRST WAS THE LISTED AIRCRAFT (N2155J), THE SECOND IS ON N406CV. SAME ENGINES (TIO-540-AK1A) WITH APPROXIMATELY THE SAME TIME SINCE OVERHAUL (1200 HOURS) FROM TWO DIFFEREN - [SDR 2019FA0000107](https://openairdocs.org/sdr/2019FA0000107.md): Tailpipe · cracked · Apr 5, 2019 · N723D · Cessna T182T · Engine Collector/Tailpipe/Nozzle > OWNER STATED TAIL PIPE CLAMP WAS REPLACED AT ANNUAL INSPECTION 5-25-18 AS WELL AS 3 OTHER CLAMPS ON THE WASTE GATE AND EXHAUST. OWNER FOUND ON PREFLIGHT THAT THE TAIL PIPE WAS LOOSE. UPON FURTHER INSPECTION AT THE MAINTENANCE SHOP FOUND TAIL PIPE CLAMP TO BE I - [SDR 2018FA0000337](https://openairdocs.org/sdr/2018FA0000337.md): Cylinder Head · bypassing · Aug 9, 2018 · N92VB · Cessna T182T · Reciprocating Engine Cylinder Section > PILOT REPORTED NO START CONDITION AFTER 2 HOUR FLIGHT. COMPRESSION CHECK COMPLETED AND FOUND CYLINDER NR 1, 72, ALL OTHER CYLINDERS BELOW 16 PSI, WITH CYLINDERS 4 & 5 AT 0. BORESCOPE FOUND EXHAUST VALVES STUCK OPEN ON CYLINDERS 4 & 5. ALL OTHER PERIMETERS NOR - [SDR 2018FA0000415](https://openairdocs.org/sdr/2018FA0000415.md): Cylinder Head · bypassing · Jun 25, 2018 · N92VB · Cessna T182T · Reciprocating Engine Cylinder Section > ENGINE EXTREMELY HARD TO START AND KEEP RUNNING SMOOTHLY. FLEW TO KPNE WITHOUT INCIDENT. ENGINE PERFORMED WITHIN PARAMETERS. DELIVERED AIRPLANE TO MAINTENANCE AND STARTING PROBLEM DIAGNOSIS. MECHANIC DETERMINED 5 OUT OF THE 6 CYLINDERS HAD VERY LOW COMPRESSION - [SDR 2018FA0000416](https://openairdocs.org/sdr/2018FA0000416.md): Cylinder Head · bypassing · Jun 25, 2018 · N92VB · Cessna T182T · Reciprocating Engine Cylinder Section > ENGINE EXTREMELY HARD TO START AND KEEP RUNNING SMOOTHLY. FLEW TO KPNE WITHOUT INCIDENT. ENGINE PERFORMED WITHIN PARAMETERS. DELIVERED AIRPLANE TO MAINTENANCE AND STARTING PROBLEM DIAGNOSIS. MECHANIC DETERMINED 5 OUT OF THE 6 CYLINDERS HAD VERY LOW COMPRESSION - [SDR 2018FA0000417](https://openairdocs.org/sdr/2018FA0000417.md): Cylinder Head · bypassing · Jun 25, 2018 · N92VB · Cessna T182T · Reciprocating Engine Cylinder Section > ENGINE EXTREMELY HARD TO START AND KEEP RUNNING SMOOTHLY. FLEW TO KPNE WITHOUT INCIDENT. ENGINE PERFORMED WITHIN PARAMETERS. DELIVERED AIRPLANE TO MAINTENANCE AND STARTING PROBLEM DIAGNOSIS. MECHANIC DETERMINED 5 OUT OF THE 6 CYLINDERS HAD VERY LOW COMPRESSION - [SDR CA180510005](https://openairdocs.org/sdr/CA180510005.md): Bearing · out of adjust · May 10, 2018 · Cessna T182T · Engine (Reciprocating) > (CAN) BEARING ALIGNMENT HOLES INCORRECTLY INDEXED RESULTING IN MISALIGNED BEARING HALVES. (TC# 20180510005) - [SDR 2017FA0000360](https://openairdocs.org/sdr/2017FA0000360.md): Exhaust Pipe · cracked · Aug 19, 2017 · N915CR · Cessna T182T · Engine Collector/Tailpipe/Nozzle > DURING ANNUAL INSPECTION, OVERBOARD EXHAUST PIPE WAS DISCOVERED CRACKED AND LEAKING AT THE WASTE GATE ATTACH FLANGE. - [SDR 2016FA0000268](https://openairdocs.org/sdr/2016FA0000268.md): Spline · sheared · Jan 6, 2016 · N941T · Cessna T182T · Engine Fuel Pump > SHAFT SHEARED ON TAKEOFF. PUMP SEIZED. DRIVE SHAFT SPLINE SHEARED. - [SDR 2015FA0000264](https://openairdocs.org/sdr/2015FA0000264.md): Exhaust Stack · cracked · Jun 9, 2015 · N621D · Cessna T182T · Engine Collector/Tailpipe/Nozzle > DURING AN OIL CHANGE THE TECH WAS DOING A VISUAL INSPECTION OF THE ENGINE AND NOTICED SOME EXHAUST SOOT/STAINING ON THE HEAT SHIELD FOR THE J BOX. DISCOVERED THE SOURCE TO BE THE CRACKED EXHAUST ELBOW. - [SDR CA141117005](https://openairdocs.org/sdr/CA141117005.md): Breather · cracked · Nov 13, 2014 · Cessna T182T · Reciprocating Engine Oil System > (CAN) THE OIL BREATHER/SEPARATOR TAKES BLOWBY GASES FROM THE ENGINE CRANKCASE AND CENTRIFUGALLY SEPARATES OIL MISTS FROM THEM BEFORE DUMPING THE GASES OVERBOARD THROUGH THE BREATHER TUBE. OIL IS RETURNED TO THE ENGINE SUMP. OIL WAS NOTED SEEPING FROM A CRACK - [SDR LC1R20140613001](https://openairdocs.org/sdr/LC1R20140613001.md): Wastegate Valve · eroded · Jun 13, 2014 · N875DE · Cessna T182T · Exhaust Turbocharger > TROUBLE SHOT A LOW MANIFOLD PRESS PROBLEM, FOUND WASTE GATE BUTTERFLY OVER 80% ERODED AWAY. THERE WAS NO OTHER DAMAGE TO THE INDUCTION SYS OR TO THE TURBOCHARGER. - [SDR CA140516002](https://openairdocs.org/sdr/CA140516002.md): Bolt · interference · May 13, 2014 · Cessna T182T · Aileron Control System > (CAN) BALANCE CABLE TO LT AILERON BELLCRANK ATTACH BOLT FOUND TO BE INTERFERING WITH AILERON PUSHROD AT FULL TRAVEL. - [SDR 2012FA0000542](https://openairdocs.org/sdr/2012FA0000542.md): Bracket · missing · Jul 26, 2012 · N6046R · Cessna T182T · Fuselage Main, Attach Fittings > DURING A SCHEDULED INSPECTION, IT WAS NOTED THAT THE RIVETS ATTACHING HORIZONTAL STABILIZER LT AND RT ATTACH BRACKETS TO THE TAILCONE BULKHEAD WERE NOT INSTALLED. FURTHER INSPECTION REVEALED THAT THE BRACKET CLIPS HAD PILOT HOLES BUT WERE NOT DRILLED TO MATC - [SDR CA120509009](https://openairdocs.org/sdr/CA120509009.md): Bulkhead · dented · Apr 20, 2012 · Cessna T182T · Fuselage Main, Bulkhead > (CAN) ACFT WAS OPEN FOR INSPECTION. NOTICED THAT BULKHEAD WAS DENTED. ALSO FOUND OUT THAT DEALER HAS NOTED THAT THIS IS A COMMON PROBLEM IN MANY OF THE NEWER MODEL. THIS DAMAGE IS NOT NEGLIGABLE IAW SRM. SUGGEST THAT MFR IS CONTACTED TO MODIFY THE SRM TO ALLO - [SDR YN8R2012041013834](https://openairdocs.org/sdr/YN8R2012041013834.md): Hose · leaking · Apr 10, 2012 · N82YA · Cessna T182T · Engine Fuel Distribution > ON COMPLIANCE WITH SB 599, FUEL PUMP REPLACEMENT, IT WAS DISCOVERED THAT THE ENGINE DRIVEN FUEL PUMP INLET HOSE HAD INDICATIONS OF OUTER FIRESLEEVE DETERIORATION AND BULGING INDICATIVE OF THE FUEL HOSE LEAKING FUEL FROM CRIMPED AREA OF FITTING/HOSE. REPLACED - [SDR CA120316003](https://openairdocs.org/sdr/CA120316003.md): Bulkhead · dented · Mar 15, 2012 · Cessna T182T · Fuselage Main, Bulkhead > (CAN) DURING IMPORT INTO CANADA NOTICED FS 207 BULKHEAD DAMAGE. LOWER PORTION OF BULKHEAD HAS 3 SMALL DENTS. DAMAGE APPEARS TO HAVE OCCURRED DURING THE MFG PROCESS. THERE IS EVIDENCE OF RUB MARKS ON THE PEAKS OF THE DENTS PRESUMABLY CAUSED BY A BUCKING BAR. - [SDR ESMR2012022801](https://openairdocs.org/sdr/ESMR2012022801.md): Pump · leaking · Feb 24, 2012 · N356CS · Cessna T182T · Engine Fuel Pump > ACFT WAS INBOUND WHEN THE ENGINE BEGAN TO LOOSE POWER. THE PILOT USED THE FUEL BOOST PUMP TO KEEP THE ENGINE RUNNING AND LANDED WITHOUT INCIDENT. THE ENGINE RAN FINE AT IDLE ON THE GROUND. WITH THE ENGINE OFF AND THE FUEL SELECTOR TURNED ON, FUEL WAS RUNNING - [SDR CA100805004](https://openairdocs.org/sdr/CA100805004.md): Antenna · failed · May 31, 2010 · Cessna T182T · Global Positioning System > WAAS/GPS/COMM COMBINATION ANTENNA NO LONGER ABLE TO RECEIVE GPS SATELLITE INFORMATION. COMM FUNCTIONALITY UNAFFECTED. - [SDR 2008FA0000848](https://openairdocs.org/sdr/2008FA0000848.md): Hose · deteriorated · Nov 19, 2008 · N72758 · Cessna 182 · Engine Fuel Distribution > ENGINE LOST RPM AND PARTIAL POWER ON GO-AROUND FROM REJECTED LANDING. ACFT THEN FLEW NORMAL PATTERN AND LANDED WITHOUT INCIDENT. GROUND RUN-UP SHOWED NO ABNORMALITIES. MAINT REMOVED INJECTOR NOZZLES. NR 2 CYL NOZZLE WAS PLUGGED AND CONTAMINANTS FOUND IN SE - [SDR 2008FA0000414](https://openairdocs.org/sdr/2008FA0000414.md): Injector · clogged · Jul 1, 2008 · N101LP · Cessna 182T · Engine Fuel Distribution > PLANE LOST ENGINE POWER, BECAME VERY LEAN, COULD NOT GET FUEL FLOW> 9 GPH. TURNED OUT TO BE ALUMINUM SHAVING FROM ORIGINAL MFG OF FUEL SERVO. CLOGGED MIXTURE HOLE INSIDE FUEL SERVO. THIS WAS A DEFECT FROM TIME OF MANUFACTURE OF FUEL SERVO. EMERGENCY LANDING - [SDR 2007FA0000233](https://openairdocs.org/sdr/2007FA0000233.md): Spring · broken · Mar 12, 2007 · N5198G · Cessna T182T · Magneto/Distributor > NEW POINTS (PN M3081) WERE INSTALLED IN BOTH MAGNETOS AT THE ANNUAL INSPECTION ON 2/22/07, TT 649.2. ON 3/10/07, TT 658.2, PART TT - 9.0 HOURS, THE PILOT/OWNER PERFORMED MAG CHECK AND THE ENGINE QUIT. A MECHANIC REMOVED THE RT MAG AND FOUND THAT THE SPRING T - [SDR 2006FA0000944](https://openairdocs.org/sdr/2006FA0000944.md): Relief Valve · failed · Sep 11, 2006 · N182GA · Cessna T182T · Exhaust Turbocharger > PILOT REPORTED, ON TAKEOFF ROLL, THE MANIFOLD PRESSURE WENT TO GREATER THAN 40 MP FOR 3 TO 4 SECONDS. THE PILOT WENT BACK TO RUNUP AREA AND CONFIRMED THAT MP COULD GO ABOUT 40 MP, PILOT TAXIED BACK TO RAMP AND GROUNDED AIRCRAFT. TROUBLESHOT TURBO CHARGER SYS - [SDR CA041216010](https://openairdocs.org/sdr/CA041216010.md): Wastegate Valve · seized · Dec 14, 2004 · Cessna T182T · Exhaust Turbocharger > (CAN) WASTEGATE BUTTERFLY VALVE FOUND SEIZED ON INSPECTION. THIS IS THE SECOND VALVE FOUND SEIZED ON TWO DIFFERENT AIRCRAFT WITH LOW TTSN. - [SDR CA031217008](https://openairdocs.org/sdr/CA031217008.md): Restraint · inoperative · Dec 9, 2003 · Cessna T182T · Passenger Compartment Equipment > (CAN) DURING INSPECTION IT WAS NOTICED THAT BOTH REAR SEAT RESTRAINT SYSTEM INERTIA REELS WOULD INTERMITTENTLY LOCK AND NOT ALLOW BELT TO EXTEND. IT WAS DECIDED THAT IF RESTRAINTS WERE RELEASED IN FLIGHT IT MAY NOT BE POSSIBLE TO REFASTEN THEM SO BOTH UNITS WE - [SDR 2002FA0001028](https://openairdocs.org/sdr/2002FA0001028.md): Magneto · damaged · Aug 26, 2002 · N24712 · Cessna T182T · Magneto/Distributor > OWNER COMPAINED WHEN RT MAGNETO WAS SELECTED ENGINE WOULD QUIT. AFTER REMOVING MAGNETO FOUND MANY INTERNAL PARTS BURNED. REPLACED WITH NEW MAGNETO. ## The whole list in SQL Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS: ```sql 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 = 'TIO540AK1A' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/engine/lycoming-tio-540-ak1a/reports --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.