# Service difficulty reports: Lycoming TIO-540 series

A list on [Lycoming TIO-540 series](https://openairdocs.org/engine/lycoming-tio-540-series.md).

Newest first. General aviation reporting is voluntary.

Page 1 of 7 · 340 reports

- [SDR 2025FA0000370](https://openairdocs.org/sdr/2025FA0000370.md): Actuator · broken · May 20, 2025 · N42178 · Cessna T206H · Elevator Tab Control System
  > WHILE CHECKING ELEVATOR TRIM CABLE TENSIONS, FOUND TENSIONS LOW. AFTER SETTING CORRECT TENSIONS, FOUND ELEVATOR TRIM TAB ACTUATOR SHAFT BROKEN AT CHAIN SPROCKETS.
- [SDR 2024FA0000200](https://openairdocs.org/sdr/2024FA0000200.md): Magneto · worn · Mar 5, 2024 · N4116K · Piper PA31325 · Magneto/Distributor
  > THE RT ENGINE WOULD NOT START OR EVEN FIRE. A STARTER VIBRATOR SYSTEM IS USED AND WAS FOUND TO BE FUNCTIONAL THROUGH TROUBLESHOOTING. THE LT MAGNETO WAS REMOVED, DISASSEMBLED. INSPECTION FOUND THAT THE PLASTIC COM LOBE HAD SIGNIFICANT WEAR CAUSED BY PRIMARY BR
- [SDR 2020FA0000098](https://openairdocs.org/sdr/2020FA0000098.md): Torque Link · separated · Dec 26, 2019 · N5930Y · Piper PA23250 · Nose/Tail Landing Gear
  > DURING INITIAL TAKEOFF ROLL OF THE DAY, THE UPPER NOSE GEAR TORQUE LINK SEPARATED FROM THE LOWER TORQUE LINK, ALLOWING THE NOSE WHEEL TO TURN SIDEWAYS. THE RESULTANT INDUCED STRESS RESULTED IN THE SEPARATION OF THE NOSE WHEEL FORK AND STRUT TUBE, AND THE SEPA
- [SDR EPUA201908087001](https://openairdocs.org/sdr/EPUA201908087001.md): Probe · false indication · Aug 7, 2019 · N4301C · Piper PA31350 · Cylinder Head Temperature (CHT) Indicating System
  > LEFT ENGINE CHT RED LINE IN CRUISE FLIGHT. REMOVED AND REPLACED LH ENGINE CHT PROBE IAW PA31 MM 77-20-03. OPS CHECK GOOD.
- [SDR 2020FA0000105](https://openairdocs.org/sdr/2020FA0000105.md): Camshaft · galled · Apr 23, 2019 · N401SL · Piper PA32R300 · Reciprocating Engine Power Section
  > CAMSHAFT LOBES 1 AND 2 GALLING AND ERODED. REDUCED LOBE LIFT OF VALVES RESULTED IN LOSS OF PERFORMANCE.
- [SDR 2020FA0000115](https://openairdocs.org/sdr/2020FA0000115.md): Turbocharger · failed · Apr 23, 2019 · N401SL · Piper PA32RT300T · Exhaust Turbocharger
  > TURBOCHARGER FAILURE DUE TO MAIN BEARING FAILURE. TURBOCHARGER LOCKED UP (FROZE) AND BLOCKED AIR TO THE INDUCTION SYSTEM. PIC DID NOT EXECUTE PROCEDURES IN THE POH (MANUAL SELECTION OF ALTERNATE AIR SOURCE) RESULTING IN OFF AIRPORT LANDING AND INCIDENT REPOR
- [SDR PAIR2018081074523](https://openairdocs.org/sdr/PAIR2018081074523.md): Exhaust Pipe · separated · Aug 8, 2018 · N364ST · Piper PA46350P · Engine Collector/Tailpipe/Nozzle
  > ENGINE EXHAUST CROSSOVER PIPING PARTIALLY SEPARATED CAUSING LOSS OF TURBOCHARGER BOOST, DAMAGING WIRING AND AIR CONDITIONER HOSES AT THE REAR OF THE ENGINE. ALSO DAMAGED COWLING SEALS AND PAINT, CAUSED HEAT DAMAGE TO THE ENGINE OIL FILTER AND THE BAGGAGE COMPA
- [SDR ZJW201802270001](https://openairdocs.org/sdr/ZJW201802270001.md): Stud · broken · Dec 31, 2017 · N444CB · Gulstm 500B · Reciprocating Engine Cylinder Section
  > LEFT ENGINE FEATHERED DUE TO LOW OIL PRESSURE. NUMBER 2 CYLINDER STUDS BROKEN.
- [SDR 2017FA0000171](https://openairdocs.org/sdr/2017FA0000171.md): Exhaust Pipe · broken · May 3, 2017 · N52JK · Piper PA60601P · Engine Collector/Tailpipe/Nozzle
  > CLIMBING THROUGH 13,000 MSL THE PILOT REPORTED A LOSS IN MANIFOLD PRESSURE ON THE LT ENGINE. RETURNED TO THE AIRPORT FOR A NORMAL LANDING. DURING INSPECTION, FOUND HEAT AND EXHAUST STAINING ON THE LOWER COWL. AFTER REMOVING THE COWLING, FOUND APPROXIMATELY 4
- [SDR EPUA20170421001](https://openairdocs.org/sdr/EPUA20170421001.md): Drive Shaft · sheared · Apr 21, 2017 · N44AC · Piper PA31350 · Propeller Governor
  > ENGINE RPM DROPPED FROM 2200 TO 1900 DURING CRUISE. UNABLE TO CONTROL RPM ON LEFT ENGINE AFTER RPM DROP. PROP FEATHERED ON GROUND WHEN SHUTTING DOWN ENGINE. MAINTENANCE DISCOVERED THE NUMBER ONE ENGINE PROP GOVERNOR HAD SHEARED THE DRIVE SHAFT FOR THE PROP
- [SDR VNFR2015102700507](https://openairdocs.org/sdr/VNFR2015102700507.md): Drain · coked · Sep 21, 2015 · N7274C · Cessna T206H · Exhaust Turbocharger
  > PILOT REPORTED LOW OIL PRESSURE DURING FLIGHT. DECLARED EMERGENCY LANDING. UPON INSPECTION EXCESSIVE COKING WAS FOUND AT TURBOCHARGER DRAIN CAN. THIS PREVENTED SCAVENGE PUMP FROM RETURNING OIL TO ENGINE RESULTING IN EXCESSIVE OIL LOASS PART THE TURBO SEALS.
- [SDR 2015FA0000277](https://openairdocs.org/sdr/2015FA0000277.md): Fitting · fractured · Jun 11, 2015 · N14284 · Piper PA23250 · Nose/Tail Landing Gear
  > UPON LANDING ROLLOUT, STUDENT PILOT REPORTED DIFFICULTY WITH NOSE WHEEL STEERING. AFTER TURNING OFF RUNWAY USING DIFFERENTIAL BRAKING, THE INSTRUCTOR PRESSED ON RUDDER PEDALS TO TEST STEERING. AT THIS TIME THE NOSE GEAR COLLAPSED FOLDING FORWARD AND PROPELLE
- [SDR JIKA2015010802](https://openairdocs.org/sdr/JIKA2015010802.md): Seal · leaking · Jan 8, 2015 · N27426 · Piper PA31350 · Exhaust Turbocharger
  > DURING CLIMB OUT, THE PILOT REPORTED A LOSS IN MANIFOLD PRESSURE ON THE LT ENGINE. VISUALLY THE PILOT SAW SMOKE COMING FROM THE LT ENGINE. THE PILOT SHUTDOWN THE LT ENGINE, RETURNED & LANDED WITHOUT INCIDENT. THE LT ENGINE TURBO CHARGER OIL SEAL FAILED CAUS
- [SDR CA141202033](https://openairdocs.org/sdr/CA141202033.md): Drag Link · cracked · Nov 27, 2014 · Piper PA23250 · Main Landing Gear Attach Section
  > (CAN) DURING A 100 HR INSPECTION THE DRAG LINK FITTING SUPPORT TUBE ASSY WAS FOUND CRACKED AT THE AFT LOWER ATTACH BOLT HOLE.
- [SDR 2014FA0000659](https://openairdocs.org/sdr/2014FA0000659.md): Fuel Line · broken · Nov 15, 2014 · N6174Y · Piper PA23250 · Engine Fuel Distribution
  > DURING CRUISE FLIGHT, RT ENGINE NR 6 CYLINDER EGT AND CHT DROPPED TO ZERO DEGREES AT THE SAME TIME AN ENGINE VIBRATION STARTED. RT ENGINE WAS THEN SHUTDOWN AS A PRECAUTIONARY MEASURE. LANDED AT AIRPORT WITHOUT INCIDENT. INSPECTED RT ENGINE AND FOUND NR 6 CY
- [SDR VDKG2014FA0000426](https://openairdocs.org/sdr/VDKG2014FA0000426.md): Oil Filter · mismanufactured · Jul 12, 2014 · N57882 · Piper PA36300 · Reciprocating Engine Oil System
  > INSTALLED NEW OIL FILTER AND FOUND THE OIL FILTER WAS FAULTY AND CAUSED THE ENGINE TO PUMP ALL OF THE OIL OUT OF THE ENGINE. OIL FILTER MOUNTING STUD WAS ONLY THREADED TO A LENGTH OF APPROXIMATELY.2500.
- [SDR CA140224025](https://openairdocs.org/sdr/CA140224025.md): Blade · misrepaired · Feb 20, 2014 · Piper PA31350 · Propeller Blade Section
  > (CAN) PROPELLER BLADES DEEM UNSERVICEABLE BY FACTORY DUE TO IMPROPER/UNAPPROVED SHOTPEENING BY LAST REPAIR SHOP.
- [SDR 2013FA0000460](https://openairdocs.org/sdr/2013FA0000460.md): Seat Track · worn · May 21, 2013 · N5832N · Gulstm 114 · Fuselage, Seat/Cargo Attach Fittings
  > DURING LANDING, SEAT SUDDENLY SLID TO ITS FULL AFT POSITION, WAS NOT ABLE TO REACH CONTROLS. LT WING TIP DAMAGED ON THE UNDERSIDE FROM SCRAPING RUNWAY.
- [SDR 2013FA0000213](https://openairdocs.org/sdr/2013FA0000213.md): Cotter Pin · failed · Apr 4, 2013 · N1953H · Piper PA32300 · Power Lever
  > LOST CONTROL FOR ENGINE POWER SETTINGS, DUE TO SEPARATION OF ENGINE CONTROL ROD END SEPARATING FROM POWER LEVER. CAUSE OF SEPARATION DUE TO FAILED COTTER PIN THAT RETAINS CLEVIS PIN THAT RETAINS CONNECTION OF CABLE END AND POWER LEVER. NTSB REPORT DISCLOSED C
- [SDR 2012FA0000675](https://openairdocs.org/sdr/2012FA0000675.md): Bulkhead · cracked · Oct 5, 2012 · N3589X · Piper PA31350 · Fuselage Main, Bulkhead
  > ON REMOVEL OF THE VERTICAL STABILIZER AND REINFORCEMENT PLATE FROM THE AFT FUSELAGE BULKHEAD AT FS 317.75, A CRACK APPROXIMATELY.75 INCHES IN LENGTH WAS LOCATED IN THE BEND RADIUS OF THIS BULKHEAD JUST ABOVE AND TO THE RIGHT OF THE UPPER LEFT VERTICAL STABIL
- [SDR 2012FA0000673](https://openairdocs.org/sdr/2012FA0000673.md): Bulkhead · cracked · Oct 3, 2012 · N3589X · Piper PA31350 · Fuselage Main, Bulkhead
  > THE LT WING FORWARD BULKHEAD ASSY FOUND WITH CRACKS IN THE LOWER SECTIONS, EMULATING IN THE BEND RADIUS AND TABS USED FOR ATTACHMENT TO THE ACFT FLOOR STRUCTURE. THIS BULKHEAD HAS CRACKS ON THE FORWARD AND AFT SECTIONS OF THE ASSY. THIS AREA DUFFICULT TO INS
- [SDR 2012FA0000635](https://openairdocs.org/sdr/2012FA0000635.md): Bulkhead · cracked · Sep 15, 2012 · N31NW · Piper PA31350 · Fuselage Main, Bulkhead
  > FOUND THE LT WING FORWARD SPAR ATTACHMENT BULKHEAD ASSY, AND THE RIGHT ASSY, HAVE CRACKS IN THE LOWER SECTIONS OF THESE PARTS.
- [SDR 2012FA0000637](https://openairdocs.org/sdr/2012FA0000637.md): Access Panel · corroded · Sep 15, 2012 · N31NW · Piper PA31350 · Wing, Plate/Skin
  > DURING AN ANNUAL INSPECTION, FOUND THAT THE ACCESS PANELS THAT COVER THE ACFT FUEL BOWLS, FUEL SELECTOR VALVES, AND ELECTRIC FUEL BOOST PUMPS HAVE CHAFED INTO THE WING SPAR REINFORCEMENT PLATES AND CAUSED FRETTING CORROSION. HAD A LEVEL 3 NDT TECH PERFORM A
- [SDR 2013FA0000110](https://openairdocs.org/sdr/2013FA0000110.md): Battery · failed · Aug 16, 2012 · N20GF · Socata TB21 · Battery/Charger System
  > SEALED BATTERY DOES NOT HOLD A CHARGE. CONFIRMED BATTERY FAILED CAPACITANCE TEST AT LESS THAN 10 PERCENT. SENT BATTERY TO MFG FOR EVALUATION, WAS TOLD THAT THE BATERY WAS FOUND TO BE DRY AT DISTRIBUTION.
- [SDR 2012FA0000388](https://openairdocs.org/sdr/2012FA0000388.md): Bulkhead · cracked · Jun 21, 2012 · N350PC · Piper PA31350 · Fuselage Main, Bulkhead
  > DURING THE ACFT ANNUAL INSPECTION, FOUND FATIGUE CRACKS IN THE AFT FUSELAGE BULKHEAD AT STATION 332. THIS BULKHEAD IS ALSO THE WHERE THE MAIN SPARS OF HORIZONTAL STABILIZERS ATTACH. THIS IS THE SECOND HIGH TIME ACFT WE HAVE FOUND WITH THESE FATIGUE CRACKS AT
- [SDR 2012FA0000443](https://openairdocs.org/sdr/2012FA0000443.md): Wedge · loose · Jun 21, 2012 · N54417 · Piper PA32300 · Magneto/Distributor
  > PILOT REPORTED ROUGH MAGNETO CHECK. REMOVED RT MAGNETO AND FOUND COIL WEDGE LOOSE IN MAGNETO. SEVERAL TEETH WERE BROKEN ON DISTRIBUTOR GEAR. MAGNETO HAD ONLY 23 HRS SINCE OVERHAUL.
- [SDR 2012FA0000424](https://openairdocs.org/sdr/2012FA0000424.md): Mount · cracked · May 12, 2012 · N147Z · Gulstm 500B · Exhaust Turbocharger
  > ON ANNUAL INSP, FOUND LT AND RT ENGINE TURBO MOUNTS CRACKED AT THE UPPER TURBO ATTACH POINT. PARTS WERE SENT BACK FOR REPAIR AND REINSTALLATION.
- [SDR JIKA2012050101](https://openairdocs.org/sdr/JIKA2012050101.md): Magneto · failed · May 1, 2012 · N4078B · Piper PA31350 · Magneto/Distributor
  > PILOT REPORTED THAT "RIGHT ENGINE RUNNING ROUGH ON CLIMBOUT AT 4000 FT LOSS OF 200 RPM. RIGHT ENGINE FAILED MAGNETO CHECK AFTER LANDING. MAINTENANCE FOUND RIGHT ENGINE LEFT MAGNETO INTERNALLY FAILED, AND REPLACED THE MAGNETO.
- [SDR EPUA20120308001](https://openairdocs.org/sdr/EPUA20120308001.md): Distributor Blk · damaged · Mar 6, 2012 · N4501B · Piper PA31350 · Magneto/Distributor
  > RT ENGINE RUNNING ROUGH OUTBOUND, MX FORUND THAT NR 2 ENGINE RT MAGNETO WENT TO CROSSFIRING. ENGINE WOULD NOT RUN WITH THIS MAG IN THE ON POSITION, DISTIBUTOR BLOCK COMING APART. REPLACING MAGNETO.
- [SDR C41R201112290108](https://openairdocs.org/sdr/C41R201112290108.md): Transducer · contaminated · Dec 28, 2011 · N929DJ · Piper PA32301T · Fuel Pressure Indicator
  > PILOT REPORTED NO FUEL PRESSURE INDICATION ON DISPLAY. FOUND FUEL PRESSURE TRANSDUCER MOUNTED UNDER LT MAGNETO WITH WIRING FACING UP. INSPECTION REVEALED UNIT TO BE OIL-SOAKED DUE TO PRIOR MAGNETO REPLACEMENT. SUSPECT OIL MIGRATED INTO WIRING AND SHORTING OUT
- [SDR KY7A2011121600011](https://openairdocs.org/sdr/KY7A2011121600011.md): Exhaust Duct · cracked · Dec 16, 2011 · N106RE · Piper PA31350 · Engine Thrust Reverser
  > E2 DEGRADED FROM FULL POWER MP AT 25", AND FUEL FLOW IN BOUND WITH NO FREIGHT. AFTER DEPARTURE, NR 2 ENGINE WOULD ONLY PRODUCE 25" OF MP. FUEL FLOW WAS LOW. ADJUSTED MIXTURE, SWITCHED TANKS, TURNED THE EMERGENCY PUMP ON AND OFF TO TROUBLESHOOT. CAME TO THE
- [SDR 2011FA0000580](https://openairdocs.org/sdr/2011FA0000580.md): Powerpack · failed · Aug 15, 2011 · N42RT · Piper PA32R301T · Hydraulic System, Main
  > LANDING GEAR HYD POWER PACK FAILED ON FIRST FLIGHT AFTER INSTALLATION. POWER PACK WAS O/H REF WO 3505.
- [SDR 3SVAN357SA4142011](https://openairdocs.org/sdr/3SVAN357SA4142011.md): Wastegate Valve · stuck · Apr 14, 2011 · N357SA · Piper PA31350 · Exhaust Turbocharger
  > PILOT REPORTED LOSS OF TURBOCHARGER BOOST AND LOSS OF L/H EMERGENCY BOOST PUMP PRESSURE DURING CRUISE. ALSO REPORTED ENGINE BOOST AND FUEL PUMP OPERATIONS RETURNED TO NORMAL AFTER 5 MINUTES. INSPECTION AND GROND RUN OF AIRCRAFT NORMAL. SUSPECT WASTEGATE MIGHT
- [SDR CEPA20110413001](https://openairdocs.org/sdr/CEPA20110413001.md): Oil Cooler · leaking · Apr 8, 2011 · N984PA · Piper PA31350 · Turbine Engine Oil System
  > WHILE IN CRUISE FLIGHT, PILOT NOTICED SMOKE AND OIL COMING FROM THE TOP COWL LOUVERS OF THE RIGHT ENGINE NACELLE. HE REDUCED POWER, FEATHERED THE RIGHT PROP, AND SHUT THE ENGINE DOWN. THE PILOT LANDED AT SCHEDULED DESTINATION UNEVENTFULLY. MAINTENANCE PERSO
- [SDR 2011F00021](https://openairdocs.org/sdr/2011F00021.md): Actuator · corroded · Jan 27, 2011 · N4089W · Piper PA32300 · Elevator Tab Control System
  > DURING SCHEDULED INSP OF ACFT, DETECTED WHAT APPEARED TO BE SLIGHT TO MODERATE SURFACE CORROSION ON STABILATOR TRIM ACTUATOR ARM ASSY. PROCEEDED TO REMOVE ASSY FOR FURTHER INVESTIGATION AND DURING REMOVAL DISCOVERED LT SIDE OF PLATE THAT ATTACHES TO STABILATO
- [SDR 2011FA0000066](https://openairdocs.org/sdr/2011FA0000066.md): Tube · cracked · Jan 26, 2011 · N4083Y · Piper PA31350 · Heating System
  > HEATER FAILED PRESSURE DECAY TEST. CRACK IN BURNER TUBE, POSSIBLY CAUSED FROM TOO HIGH FUEL PRESSURE.
- [SDR BSYA2011004](https://openairdocs.org/sdr/BSYA2011004.md): Buss · inoperative · Jan 11, 2011 · N42HD · Piper PA31350 · Electrical Power System Wiring
  > GOING INTO AIRPORT, ACFT HAD A TOTAL AVIONICS FAILURE. MX FOUND BOTTOM CIRCUIT BREAKER BUSS INOP. FOUND LOOSE SCREW FEEDING BUSS, TIGHTENED SCREW, OPS CHECKS GOOD.
- [SDR CA110125003](https://openairdocs.org/sdr/CA110125003.md): Engine · fluctuates · Jan 10, 2011 · Piper PA31 · Engine (Turbine/Turboprop)
  > IFSD CREW REPORTS STATE THAT DURING CLIMB, PASSING 11000 FT AT HIGH POWER, WHILE MONITORING TORQUE AND OIL PRESSURE FLUCTUATIONS THE ENGINE LOST OIL PRESSURE, WHICH COINCIDED WITH A LOUD NOISE AND AUTOFEATHER.
- [SDR IRJ2011F00000](https://openairdocs.org/sdr/IRJ2011F00000.md): Socket · unsecure · Dec 3, 2010 · N3589B · Piper PA31350 · Propeller Governor
  > PILOT REPORTED RT PROP CONTROL INOPERATIVE. INSP REVEALED THAT THE BALL, PN 54175-00, CAME OUT OF THE SOCKET, PN 31747-00, ON THE RT PROP CONTROL END AT THE GOVERNOR. INSPECTED AND REPAIRED CONNECTION AT THE RT PROP GOV.
- [SDR 2010FA0001214](https://openairdocs.org/sdr/2010FA0001214.md): Connector · burned · Dec 2, 2010 · N111UC · Piper PA31350 · Air Conditioning System Wiring
  > (QV0R) INSPECTED ACFT IAW SB NR 1004. FOUND HEATER WIRE BADLY BURNED AT MOLEX CONNECTOR E303 AS DESCRIBED IN THE "PURPOSE:" SECTION OF THE SB, HOWEVER WIRE WAS BLACKED FOR.7500" ON THE MALE CONNECTOR PIN AND DISCOLORED FOR A FURTHER.7500". A SMALL SECTION O
- [SDR 2011FA0000055](https://openairdocs.org/sdr/2011FA0000055.md): Bolt · broken · Nov 14, 2010 · N54004 · Piper PA23250 · Main Landing Gear Attach Section
  > THE BOLT ATTACHING THE LT MAIN GEAR UPPER DRAG LINK TO THE LOWER LINK ASSY BROKE AND THE LT MAIN GEAR STRUT ASSY FOLDED BACKWARDS IN THE LWR NACELLE STRUCTURE. THIS INCIDENT HAPPENED AFTER LANDING, DURING A ROLL-OUT AND TURN IN OFF RUNWAY.
- [SDR 2010FA0001223](https://openairdocs.org/sdr/2010FA0001223.md): Tire · failed · Oct 22, 2010 · N5219E · Cessna T206H · Tire
  > DURING LANDING ROLL THE PILOT EXPERIENCED AN ABNORMAL DRAG TO THE LT, OBSERVED THE LT MAIN TIRE HAD GONE FLAT AND CAME TO A STOP ON THE RUNWAY. THE ACFT WAS THEN TOWED TO THE HANGAR AND THE INSP PROCESS BEGAN. UPON INSP, IT WAS DISCOVERED THAT THE RUBBER USE
- [SDR 2010FA0001136](https://openairdocs.org/sdr/2010FA0001136.md): Power Supply · dislodged · Sep 9, 2010 · N4170D · Piper PA46350P · Exterior Lighting
  > DURING LANDING, OPERATOR COULD NOT REDUCE POWER OF THE ACFT. THE ACFT LANDED WITHOUT INCIDENT. INVESTIGATION REVEALED THAT THE ACFT HAD BEEN MODIFIED IAW STC SA02279AT WITH AN AFTER MARKET HIGH INTENSITY LANDING LIGHT. THE POWER SUPPLY FOR THE LANDING LIGHT
- [SDR 2010FA0000933](https://openairdocs.org/sdr/2010FA0000933.md): Spar · cracked · Sep 1, 2010 · N9353P · Piper PA24260 · Rudder, Spar/Rib
  > RUDDER SPAR CRACKED AT UPPER HINGE FITTING.
- [SDR 2010FA0000934](https://openairdocs.org/sdr/2010FA0000934.md): Spar · cracked · Sep 1, 2010 · N123PC · Piper PA24260 · Rudder, Spar/Rib
  > RUDDER SPAR CRACKED AT UPPER HINGE FITTING.
- [SDR 2010FA0000839](https://openairdocs.org/sdr/2010FA0000839.md): O-Ring · broken · Aug 11, 2010 · N221GH · Piper PA32R300 · Propeller Hub Section
  > PILOT REPORTED LOSS OF CONTROL OF PROPELLER CAUSING MOMENTARY OVERSPEED WHICH FORCED THE PILOT TO USE THE THROTTLE TO GAIN CONTROL. DISASSEMBLY OF PROPELLER REVEALED INTERNAL OIL LEAK CAUSING A HYD LOCK WITH THE BLADES AT FINE PITCH. FURTHER INVESTIGATION OF
- [SDR 2010FA0000809](https://openairdocs.org/sdr/2010FA0000809.md): Fitting · corroded · Jul 29, 2010 · N54AL · Piper PA60601P · Airfoil Anti/De-ice System
  > OWNER STATED HE WAS CRUISING AT ALTITUDE, TAKING ON ICE, ACTIVATED THE DE-ICE BOOT FUNCTION AND THE ICE WAS NOT REMOVED FROM THE ACFT. AFTER MULTIPLE TRIES HE WAS FORCED TO MAKE A EMERGENCY DECENT TO MAINTAIN AIRSPEED AND TO REMOVE THE ICE IN WARMER TEMPS. TH
- [SDR 2010FA0000476](https://openairdocs.org/sdr/2010FA0000476.md): Mount · broken · Apr 29, 2010 · N6180Y · Piper PA23250 · Engine Starter
  > PILOT REPORTED STARTER MAKING A GRINDING NOISE. TROUBLESHOOTING REVEALED THE STARTER DRIVE GEAR NOT FULLY MESHING IN RING GEAR. FURTHER INVESTIGATION REVEALED MOVEMENT OF START DRIVE CASE WHILE MOVING PROP WITH DRIVE ENGAGED. CRACK WAS FOUND ON FWD LT CORNE
- [SDR 2010FA0000241](https://openairdocs.org/sdr/2010FA0000241.md): Tube · defective · Mar 8, 2010 · N46PT · Piper PA46350P · Tire Tube
  > NOSE TIRE WENT FLAT DURING TAXI FOR TAKEOFF. FOUND HOLE IN SIDEWALL OF TUBE. HAVE SEEN THIS DEFECT MANY TIMES IN NOSE AND MAIN TIRE TUBES IN THE LAST 12 MONTHS.
- [SDR ZB0R20100001](https://openairdocs.org/sdr/ZB0R20100001.md): Case · cracked · Feb 23, 2010 · N35453 · Piper PA31350 · Reciprocating Engine Power Section
  > OPERATOR REQUESTED TROUBLESHOOTING OF LOW OIL PRESSURE ON RT ENGINE. UPON REMOVAL OF RT ENG COWL, MECHANIC DISCOVERED OIL FILM ON LT SIDE OF ENG CASE. FURTHER INSP REVEALED WHAT APPEARED TO BE A CRACK ON THE LT CASE HALF. PAINT WAS REMOVED AND DYE PENETRANT AP

Next page: https://openairdocs.org/engine/lycoming-tio-540-series/reports.md?page=2

## 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 = 'TIO540'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/engine/lycoming-tio-540-series/reports

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