# Service difficulty reports: Lycoming TIO-541-E1C4 A list on [Lycoming TIO-541-E1C4](https://openairdocs.org/engine/lycoming-tio-541-e1c4.md). Newest first. General aviation reporting is voluntary. - [SDR 2022FA0000025](https://openairdocs.org/sdr/2022FA0000025.md): None · none · Jun 2, 2021 · N6010S · Beech 100BEECH · Engine (Reciprocating) > LEFT ENGINE BECAME ROUGH IN CRUISE. AIRCRAFT LANDED UNEVENTFULLY. FOUND #2 CYLINDER HYDRAULIC LIFTER P/N: 15B28037 COLLAPSED. INTAKE VALVE STEM BROKEN. PISTON DAMAGED. - [SDR 2022FA0000024](https://openairdocs.org/sdr/2022FA0000024.md): None · collapsed · May 19, 2021 · N6010S · Beech B60 · Engine (Reciprocating) > RIGHT ENGINE BECAME ROUGH IN CRUISE. AIRCRAFT LANDED UNEVENTFULLY. FOUND #2 CYLINDER HYDRAULIC LIFTER P/N: 15B28037 COLLAPSED. INTAKE VALVE STEM BROKEN. PISTON DAMAGED. - [SDR MI22018F00000](https://openairdocs.org/sdr/MI22018F00000.md): Intake Valve · broken · Oct 25, 2018 · N586HP · Beech B60 · Reciprocating Engine Cylinder Section > PILOT SAYS HE WAS CLIMBING THROUGH 17000` WHEN THE RT ENG LOST POWER AND WAS RUNNING ROUGH. THE PILOT DESCENDED AND LANDED WITH THE LT ENG. REMOVED COWLING AND CHECKED COMPRESSION AND FOUND NR 2 CYLINDER NO COMPRESSION. REMOVED NR 2 CYLINDER RBC AND FOUND I - [SDR 2017FA0000029](https://openairdocs.org/sdr/2017FA0000029.md): Hub · cracked · Jan 26, 2017 · N10WE · Beech B60 · Propeller Hub Section > A HUB CRACK DISCOVERED DURING ROUTINE MAINTENANCE. THE HUB WAS REPLACED WITH A SERVICEABLE UNIT. - [SDR CA150408033](https://openairdocs.org/sdr/CA150408033.md): Altimeter · damaged · Feb 27, 2015 · Beech A60 · Altimeter, Barometric/Encoder > (CAN) IN FLIGHT AT ALTITUDE OF 14,000 FEET NR 2 ALTIMETER DISPLAYED 10,000 FEET. CORRECT ALTITUDE CONFIRMED BY ATC & CROSS SIDE INSTRUMENT. MX INVESTIGATION FOUND P2 ELEC CONNECTOR HAD SEPARATED FROM ALTIMETER CASE CAUSING LEAK. DEFECTIVE UNIT SENT OUT FOR - [SDR PCPR20131218001](https://openairdocs.org/sdr/PCPR20131218001.md): Crankcase · cracked · Nov 8, 2013 · N622R · Beech B60 · Reciprocating Engine Power Section > OPERATOR REPORTED OIL IN ENGINE COMPARTMENT. TECHNICIAN PERFORMED VISUAL INSPECTION AND FOUND CRACK IN ENGINE CRANKCASE FORWARD OF NR 2 CYLINDER FLANGE. - [SDR CA120326008](https://openairdocs.org/sdr/CA120326008.md): Bolt · loose · Mar 15, 2012 · Beech B60 · Elevator Control System > (CAN) DURING TROUBLESHOOTING FOR AN UNRELATED PROBLEM, A BOLT PN#AN174-15A/M WAS FOUND LOOSE ON THE INBD PIVOT LOCATION OF THE L/H ELEVATOR. AN ANNUAL INSPECTION HAD BEEN COMPLETED PREVIOUSLY AND A VISUAL INSPECTION OF THIS AREA SHOWED NO ISSUES. TWO FLIGHTS - [SDR 2010FA0000063](https://openairdocs.org/sdr/2010FA0000063.md): Motor · seized · Jan 21, 2010 · N111XL · Beech A60 · Landing Gear Retraction/Extension System > LANDING GEAR FAILED TO EXTEND. ACFT LANDED GEAR UP. FOUND ELECTRIC MOTOR SEIZED. COULD NOT EXTEND LANDING GEAR MANUALLY. - [SDR CA091013004](https://openairdocs.org/sdr/CA091013004.md): Hub · damaged · Oct 7, 2009 · Beech A60 · Propeller Hub Section > (CAN) PROPELLER WAS RECEIVED FOR O/H DUE TO A FOREIGN OBJECT STRIKE. WHEN THE PAINT WAS REMOVED FROM THE HUB CORROSION IN THE BLADE SEAL GROOVES WAS NOTED. AFTER CONSULTING THE MFG O/H MANUAL IT WAS FOUND THAT THE HUB IS NOT REPAIRABLE AND MUST BE REMOVED FR - [SDR CA091013005](https://openairdocs.org/sdr/CA091013005.md): Fork · damaged · Oct 7, 2009 · Beech A60 · Propeller Controlling System > (CAN) PROPELLER WAS RECEIVED FOR O/H DUE TO A FOREIGN OBJECT STRIKE. DURING MPI OF THE PITCH CHANGE FORK CRACKS WERE FOUND COMING FROM THE PITCH CHANGE BLOCK SLOTS. THE CRACKS DO NOT APPEAR TO BE CONSISTENT WITH THE TYPE OF BLADE DAMAGE OBSERVED DURING THE FO - [SDR CA090424005](https://openairdocs.org/sdr/CA090424005.md): G Switch · failed · Apr 23, 2009 · Beech B60 · Emergency Locator Beacon > (CAN) WHILE PERFORMING 12 MONTH INSP OF ELT IAW CAR 571 APPENDIX G THE G SWITCH FAILED TO OPERATE. G SWITCH REPLACED AND UNIT RETURN TO SERVICE. - [SDR CA090409004](https://openairdocs.org/sdr/CA090409004.md): Intake Valve · broken · Apr 7, 2009 · Beech B60 · Reciprocating Engine Cylinder Section > (CAN) PILOT REPORTED LT ENG RUNNING ROUGH, NO INDICATION ON GRAPHIC ENGINE MONITOR FOR CYL NR 5. OPENED COWLINGS, INSPECTED CYL NR 5, CHECKED SPARK PLUGS, CHECKED COMPRESSION NO FAULTS FOUND. DETERMINED THAT WIRING HARNESS FOR GRAPHIC ENG MONITOR INSTALLED I - [SDR CA080806005](https://openairdocs.org/sdr/CA080806005.md): Turbocharger · malfunctioned · Aug 1, 2008 · Beech B60 · Exhaust Turbocharger > (CAN) PILOT REPORTED LOW MANIFOLD PRESSURE ON LT ENG IN CLIMB OUT, ACFT RETURNED TO THE AIRPORT. MAINT BACK FLUSHED THE LT TURBO WASTEGATE AND CONTROLLER, GROUND RUN OK. NO OTHER DEFECTS NOTED, ACFT RETURNED TO SERVICE. - [SDR CA080208002](https://openairdocs.org/sdr/CA080208002.md): Elt · failed · Feb 8, 2008 · Beech 60 · Emergency Locator Beacon > (CAN) WHEN TESTING THE ELT AT ITS ANNUAL INSP THE ELT HAD NO MODULATION AND NO OUTPUT POWER. THE ELT REPLACED WITH A SERVICEABLE UNIT. (TC NR 20080208002) - [SDR 2007FA0000886](https://openairdocs.org/sdr/2007FA0000886.md): Engine · making metal · Aug 17, 2007 · N98KA · Beech A60 · Engine (Reciprocating) > DURING ROUTINE OIL CHANGE, METAL SHAVINGS WERE FOUND IN OIL FILTER AND SCREEN. SHAVINGS WERE MAGNETIC. THESE ENGINES DO HAVE WEAR ISSUES ON CAM AND LIFTERS. AFTER REMOVING OIL PAN, FOUND CAM BAD AND LIFTER WEAR. OIL ANALYSIS DIDN`T PICK UP LARGER MICRON IN - [SDR 2007FA0000393](https://openairdocs.org/sdr/2007FA0000393.md): Oil Cooler · cracked · Apr 9, 2007 · N1873W · Beech A60 · Engine Oil Cooler > ON APRIL 9, 2007, MADE A PRECAUTIONARY LANDING, AL (TCL) DUE TO LOW OIL PRESSURE ON THE LEFT ENGINE. MAINTENANCE PERSONNEL REPORTED THAT THE OIL COOLER HAD FAILED DUE TO CRACKS, THE OIL LEVEL WAS DOWN (4) QUARTS, AND THE OIL FILTER WAS INSPECTED WITH NO CONTA - [SDR CA070319006](https://openairdocs.org/sdr/CA070319006.md): Tappet · spalled · Mar 14, 2007 · Beech B60 · Reciprocating Engine Cylinder Section > (CAN) ENGINE MODIFIED IAW FIREWALL FORWARD CENTRILUBE STC. PREVIOUS EXPERIENCE WITH THIS ENGINE SERIES PROMPTS REGULAR TAPPET INSPECTIONS. TAPPETS INSPECTED AND SPALLING WAS FOUND, EVEN ON THIS STC`D ENGINE. TAPPETS SENT TO FIREWALL FORWARD FOR EXAMINATION, A - [SDR 2005FA0000766](https://openairdocs.org/sdr/2005FA0000766.md): Cylinder · cracked · May 3, 2005 · N34KA · Beech B60 · Reciprocating Engine Cylinder Section > DURING DIFFERENTIAL COMPRESSION TEST, AIR WAS HEARD LEAKING FROM LOWER CYLINDER AREA. COMPRESSION WAS 40/80. USING LIQUID LEAK DETECTOR, FOUND AIR BLOWING OUT FROM A CRACK IN CYLINDER FIN. REMOVED CYLINDER FROM ENGINE AND NOTED A CRACK IN THE COMBUSTION CHA - [SDR CA050228008](https://openairdocs.org/sdr/CA050228008.md): Control Cable · frayed · Feb 28, 2005 · Beech B60 · Elevator Control System > (CAN) (.0625) ELEVATOR TRIM CABLE WAS FOUND WITH WIRES BROKEN IN A CRITICAL FATIGUE AREA, (.2500) LENGTH FROM AFT END, THROUGH THE IDLER PULLY AND CAPSTAN OF BENDIX FCS 810 AUTOPILOT TRIM SERVO. SEC 7 PART B: FOUND DURING AUTOPILOT REPLACEMENT. SEC 7 PART - [SDR 2005FA0000463](https://openairdocs.org/sdr/2005FA0000463.md): Service difficulty · Feb 11, 2005 · N30MM · Beech B60 · Exhaust Turbocharger > WHILE INVESTIGATING OIL LEAK FROM TURBO, FOUND IMPELLER/TURBINE SHAFT HOLD DOWN NUT LOOSE ALLOWING SHAFT TO MOVE LATERALLY. THIS CAUSED SHAFT TO BECOME UNSEATED AT BEARING SEALS. DISCREPANCY WAS DISCOVERED EARLY ENOUGH TO KEEP IMPELLER AND TURBINE WHEELS FRO - [SDR 2003FA0001101](https://openairdocs.org/sdr/2003FA0001101.md): Rod · destroyed · Oct 5, 2003 · N57HD · Beech B60 · Reciprocating Engine Power Section > ON FINAL APPROACH, LEFT ENGINE, NR 5 ROD BROKE AND BROKE CRANKCASE. - [SDR 2002FA0001091](https://openairdocs.org/sdr/2002FA0001091.md): Lifter · spalled · Sep 5, 2002 · N18292 · Beech B60 · Reciprocating Engine Power Section > SEVEN SPALLING OF LIFTERS AND CAM SHAFT WITH ONLY 130 HOURS USE. ALSO FAILED WITH 60 HOURS USE. - [SDR 2002FA0000992](https://openairdocs.org/sdr/2002FA0000992.md): Pin · failed · Aug 8, 2002 · N102SB · Beech B60 · Reciprocating Engine Power Section > THE LIFTER BORES WERE ALL SLEEVED (ALL 12) NOTE: THE SLEEVES CAME LOOSE IN ALL THE HOLES (EXCEPT TWO) ROTATING AND BLOCKING OFF OIL PASSAGES. THERE WERE NO STANDARD SAFETY PINS, OR DEVICES TO HOLE THE LIFTER SLEEVE IN PLACE. THERE ARE MANY OTHER ENGINES IN S - [SDR 2001FA0000572](https://openairdocs.org/sdr/2001FA0000572.md): Lifter · spalled · Nov 6, 2001 · N33LB · Beech 60 · Reciprocating Engine Power Section > UPON REMOVAL OF PUSH RODS AND PUSH ROD TUBES FOR RESEAL, THE LIFTERS WERE REMOVED FOR BLEEDING. THE LIFTERS WERE INSPECTED AND WERE FOUND TO HAVE SEVERE SPALLING. MFG WAS NOTIFIED AND ENGINES ARE TO BE REMOVED AND SENT BACK FOR REPAIR. ENGINES HAVE 132.4 HRS - [SDR 2001FA0000655](https://openairdocs.org/sdr/2001FA0000655.md): Lifter · spalled · Nov 6, 2001 · N33LB · Beech 60 · Reciprocating Engine Power Section > UPON REMOVAL OF PUSH RODS AND PUSH ROD TUBES FOR RESEAL. THE LIFTERS WERE REMOVED FOR BLEEDING. THE LIFTERS WERE INSPECTED AND WERE FOUND TO HAVE SEVERE SPALLING. MFG WAS NOTIFIED AND ENGINES ARE TO BE REMOVED AND SENT BACK FOR REPAIR. ENGINES HAVE 132.4 H - [SDR CA000920015](https://openairdocs.org/sdr/CA000920015.md): Bolt · sheared · Aug 15, 2000 · Beech B60 · Reciprocating Engine Power Section > (CAN) THE NR 3 CYLINDER CONNECTING ROD BOLT FAILED DUE TO FATIGUE, OR DEFECTIVE MATERIAL. - [SDR 98ZZZX2275](https://openairdocs.org/sdr/98ZZZX2275.md): Connect Rod · failed · Apr 20, 1998 · N66HW · Beech B60 · Reciprocating Engine Power Section > NR 3 CYLINDER ROD BROKE IN CRUISE FLIGHT. - [SDR AU970408](https://openairdocs.org/sdr/AU970408.md): Adapter · cracked · Apr 22, 1997 · Beech 60 · Wing, Landing Gear Attach Fittings > (AUS) LANDING GEAR ATTACHMENT BRACKET CRACKED - [SDR 97ZZZX980](https://openairdocs.org/sdr/97ZZZX980.md): Union · detached · Jan 24, 1997 · N928PT · Beech A60 · Reciprocating Engine Cylinder Section > CYLINDER DRAIN FITTING CAME OUT OF HEAD. DRAIN LINE WAS STILL ATTACHED. THIS CAUSED ERRONEOUS READINGS ON SENSE SYSTEM. - [SDR 97ZZZX607](https://openairdocs.org/sdr/97ZZZX607.md): Distributor Gear · teeth missing · Jan 1, 1997 · N711CE · Beech B60 · Magneto/Distributor > ENG QUIT IN FLT. RETURNED TO 5B5. FOUND ON BOTH MAGNETOS ALMOST 100 PERCENT OF THE TEETH ON DISTRIBUTOR GEARS WERE MISSING (SHEARED OFF), BOTH DISTRIBUTOR GEAR CONTACT FINGERS BROKEN OFF AND WEDGED BETWEEN GEAR AND DIST. BLOCK CAUSING TOTAL LOSS OF IGNITION. - [SDR 97ZZZX608](https://openairdocs.org/sdr/97ZZZX608.md): Distributor Gear · teeth missing · Jan 1, 1997 · N711CE · Beech B60 · Magneto/Distributor > ENG QUIT IN FLT. RETURNED TO 5B5. FOUND ON BOTH MAGNETOS ALMOST 100 PERCENT OF THE TEETH ON DISTRIBUTOR GEARS WERE MISSING (SHEARED OFF), BOTH DISTRIBUTOR GEAR CONTACT FINGERS BROKEN OFF AND WEDGED BETWEEN GEAR AND DIST. BLOCK CAUSING TOTAL LOSS OF IGNITION. - [SDR CA960604005](https://openairdocs.org/sdr/CA960604005.md): Bearing · scored · Jun 4, 1996 · Beech B60 · Reciprocating Engine Power Section > (CAN)PROP WENT INTO FEATHER AT ENGINE IDLE. PROP CONTROL OIL LEAK TEST PERFORMED PER LYCOMING S.L. 1462, NOT WITHIN LIMITS. NON FERROUS METAL IN FILTERS. ENGINE REPLACED. TEARDOWN REVEALED FRONT CRANKSHAFT BEARING BADLY WORN DUE TO AN APPARENT OUT OF ROUND CON - [SDR AU960487](https://openairdocs.org/sdr/AU960487.md): Coil · cracked · Apr 18, 1996 · Beech A60 · Magneto/Distributor > (AUS) RH ENGINE LH MAGNETO 'CLEAR CASE' COIL DETERIORATED AND CASE SEVERLY CRACKED - FOUND DURING INSPECTION IAW AD/ELECT/66 AMDT 1 - AIRCRAFT WAS PREVIOUSLY REGISTERED AS VH-EZT - [SDR 96ZZZX2074](https://openairdocs.org/sdr/96ZZZX2074.md): Cylinder · failed · Feb 28, 1996 · N294D · Beech B60 · Reciprocating Engine Cylinder Section > DURING ENGINE RUN-UP FOR TAKEOFF, ENGINE QUIT. INVESTIGATION BY BORESCOPE FOUND NR 4 CYLINDER EXHAUST VALVE NOT WORKING. REMOVED ROCKER BOSS AND FOUND EXHAUST VALVE ROCKER SHAFT INBOARD ROCKER BOSS CASTING AND COVER TAB FAILED. OUTBOARD CASTING OK. ALL OTH - [SDR 95ZZZX5525](https://openairdocs.org/sdr/95ZZZX5525.md): Gasket · failed · Sep 8, 1995 · N234RD · Beech B60 · Reciprocating Engine Cylinder Section > INTAKE TO CYLINDER GASKET FAILED NEAR BOLT HOLE AFTER 10 HOURS FLIGHT. SURFACE PLATE TEST REVEALED NO ABNORMALITIES IN SEALING SURFACE. GASKET SHOWED DEFINITE IMPRESSION FROM INTAKE TUBE - SEATED 360 DEGREES. GASKET SUPPLIER SUGGESTS A SOFT SPOT ON THE GASK - [SDR 95ZZZX3948](https://openairdocs.org/sdr/95ZZZX3948.md): Oil Tube · broken · Jun 23, 1995 · N6033C · Beech B60 · Reciprocating Engine Oil System > RIGHT ENGINE OIL LEAK. IN-FLIGHT SHUT DOWN. FOUND OIL TUBE FOR NR 4 CYLINDER EXHAUST VALVE BROKEN. SUSPECT CAUSE - A) OVERTORQUED AT INSTALLATION. B) BUMPED WITH TOOL. C) FATIGUE. ## 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 = 'TIO541E1C4' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/engine/lycoming-tio-541-e1c4/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.