# Service difficulty reports: Continental TSIO-520-B A list on [Continental TSIO-520-B](https://openairdocs.org/engine/continental-tsio-520-b.md). Newest first. General aviation reporting is voluntary. - [SDR 2020FA0000428](https://openairdocs.org/sdr/2020FA0000428.md): Switch · broken · Sep 10, 2020 · N340DF · Cessna 340A · Landing Gear Position and Warning > RIGHT GEAR DOWN LIGHT WOULD NOT ILLUMINATE ON LANDING. I LOOKED AT THE LANDING GEAR WHEN THE PLANE WAS TOWED IN TO MY SHOP. I FOUND THE LANDING GEAR MICRO SWITCH ACTUATOR TAB BROKEN. WE JACKED THE AIRPLANE AND REPLACED THE SWITCH TAB AND ADJUSTED. WE OPERA - [SDR 2016FA0000038](https://openairdocs.org/sdr/2016FA0000038.md): Piston Ring · broken · Dec 20, 2015 · N3308Q · Cessna 320D · Reciprocating Engine Power Section > NR 1 AND NR 2 TOP RING LAN FAILURE. ENGINE LOSS OF COMRESSION. FOUND LOOKING AT TOP OF PISTON FROM ABOUT 7 O`CLOCK POSITION TO 11 O`CLOCK RING LAN MISSING AND BROKEN RINGS. OPERATION AT 11,000 FT, 68 PERCENT POWER ENGINE DEVELOPED A VIBRATION. POSSIBLE DEF - [SDR CA141007007](https://openairdocs.org/sdr/CA141007007.md): Cylinder Head · leaking · Oct 3, 2014 · Cessna T310R · Reciprocating Engine Cylinder Section > (CAN) OWNER REPORTED A SMALL OIL LEAK ON BOTH ENGINES. UPON INVESTIGATING IT WAS FOUND THAT EACH ENGINE HAD A CRACKED CYLINDER HEAD. 4 CYLINDERS WERE REPLACED 90 HOURS PRIOR WITH THE SAME PROBLEM. LT CYLINDER NR 6 CRACKED ON INTAKE PORT WHERE YOU COULD SEE - [SDR CA130725001](https://openairdocs.org/sdr/CA130725001.md): Cylinder Head · damaged · Jul 24, 2013 · Cessna T310R · Reciprocating Engine Cylinder Section > (CAN) FOUND DURING UNSCHEDULED MAINTENANCE A BLUE STREAK ON COWLING. UPON FURTHER INVESTIGATION NR 5 CYLINDER LT ENGINE WAS FOUND TO BE LEAKING FUEL JUST ABOVE INTAKE PORT IN BETWEEN COOLING FINS. SOAP TEST PROVED TO SHOW IT WAS CRACKED FROM SPARK PLUG HOLE OV - [SDR CA091124006](https://openairdocs.org/sdr/CA091124006.md): Landing Gear · stuck · Nov 23, 2009 · Cessna T310P · Nose/Tail Landing Gear > (CAN) NOSE RETRACTION AFTER TAKEOFF, NLG STUCK IN PARTIALLY RETRACTED POSITION. EMERGENCY EXTENSION ATTEMPTED WITH NO MOVEMENT IN NOSE GEAR. EMERGENCY LANDING CARRIED OUT. GEAR INSPECTION TO BE CARRIED OUT TO DETERMINE CAUSE. (TC NR 20091124006) - [SDR 2007FA0000772](https://openairdocs.org/sdr/2007FA0000772.md): Bolt · sheared · Apr 1, 2007 · N3424Q · Cessna 320E · Main Landing Gear > AIRCRAFT HAS EXPERIENCED A RT LANDING GEAR FAILURE UPON LANDING. PRIOR TO THIS INCIDENT, THE LANDING GEAR HAD BEEN CHECKED DURING THE AIRCRAFT ANNUAL INSPECTION AND FOUND TO BE OUT OF RIG IAW SERVICE MANUAL D508-3-13 STANDARDS. THE AIRCRAFT EXPERIENCED A PART - [SDR CA060821002](https://openairdocs.org/sdr/CA060821002.md): Wire Harness · wrong part · Aug 15, 2006 · Cessna 310Q · Propeller Feathering/Reversing > (CAN) HARNESS TOO SHORT WOULD NOT ALLOW PROPELLER TO FEATHER. PILOT COULD NOT FEATHER LT OR RT PROPELLERS DURING TRAINING FLIGHT. WRONG PROPELLER DEICE WIRING HARNESSES FOUND INSTALLED AND REPLACED WITH CORRECT P/N D5855-1. (TC NR 20060821002) - [SDR 2005FA0000770](https://openairdocs.org/sdr/2005FA0000770.md): Rod · broken · May 19, 2005 · N6131X · Cessna T310R · Reciprocating Engine Power Section > DURING CRUISE FLT, ENG BEGAN TO VIBRATE SEVERELY AND PILOT SHUTDOWN. TEARDOWN AND INVESTIGATION REVEALED THE NR 2 ROD BROKE 1/2 WAY BETWEEN PISTON AND CRANK. IT IS SUSPECTED THIS ENG ENCOUNTERED LIQUID LOCK AT SOME TIME CAUSING A BENT ROD THAT EVENTUALLY FAI - [SDR CA040723003](https://openairdocs.org/sdr/CA040723003.md): Wire · failed · Jul 12, 2004 · Cessna T310R · Landing Gear System Wiring > (CAN) TAKEOFF, LANDING GEAR FAILED TO RETRACT. GEAR CB POPPED IMMEDIATELY ON SELECT UP, CAUSED 3 GREEN (SAFE GEAR) LIGHTS TO GO OUT. THE CB WAS RESET, IMMEDIATELY RE-POPPED. MOMENTARY 3 GREEN INDICATION OF LIGHTS WHEN BREAKER WAS RESET INDICATING GEAR WAS ST - [SDR CA030603007](https://openairdocs.org/sdr/CA030603007.md): Bellcrank · broken · May 28, 2003 · Cessna T310P · Landing Gear Retraction/Extension System > (CAN) WHEN GEAR WAS SELECTED UP AFTER TAKE OFF A LOUD SNAP WAS HEARD THE RED GEAR LIGHT WAS ON. WHEN GEAR WAS SELECTED DOWN THE 3 GREEN GEAR LIGHTS WAS OBTAINED. THE AIRCRAFT LANDED WITHOUT FURTHER INCIDENT. FOUND BROKEN IDLER BELLCRANK. MAINTENANCE IS CHECKI - [SDR AUS20030446](https://openairdocs.org/sdr/AUS20030446.md): Crankshaft · cracked · Apr 10, 2003 · Piper PA46310P · Reciprocating Engine Power Section > (AUS) CRANKSHAFT CRACKED RADIALLY IN AREA LOCATED BEHIND THE PROPELLER FLANGE. CRACK LENGTH APPROXIMATELY 50.8MM (2IN). - [SDR CA030211008](https://openairdocs.org/sdr/CA030211008.md): Actuator · failed · Jan 7, 2003 · Cessna T310Q · Landing Gear Actuator > (CAN) CJ0701 ACTUATOR TAB IS A SMALL METAL TAB THAT FITS ON PORT GEAR DOWN SWITCH. TAB FAILED DUE TO METAL FATIGUE CAUSING INTERMITTENT GEAR SAFE LIGHT ON PORT SIDE. - [SDR 20000505SH023](https://openairdocs.org/sdr/20000505SH023.md): Valve Guide · worn · Apr 5, 2000 · N310HD · Cessna T310R · Reciprocating Engine Cylinder Section > VERY LOW COMPRESSION NOTED IN THE NR 3 CYL ON RT ENGINE DURING ANNUAL INSP. THE CYL REMOVED AND INSPECTED. THE EXHAUST VALVE GUIDE WAS WORN TO THE POINT WHERE THE VALVE COULD NOT SEAT PROPERLY. CYL REQUIRED BOTH VALVES AND VALVE GUIDES TO BE REPLACED. RE-AS - [SDR AU000604](https://openairdocs.org/sdr/AU000604.md): Landing Gear · collapsed · Feb 26, 2000 · Cessna 402B · Landing Gear Retraction/Extension System > (AUS) PILOT REPORTED THAT THE LANDING GEAR RETRACTED BY ITSELF. POST-RETRACTION/EXTENSION TESTS CARRIED OUT WITHOUT INCIDENT. AS A PRECAUTION, THE LG MOTOR WAS REPLACED. SWITCHES, SETTINGS AND LIGHTS WERE CHECKED - NO DEFECTS FOUND. - [SDR 99ZZZX510](https://openairdocs.org/sdr/99ZZZX510.md): Dipstick · broken · Jan 7, 1999 · N711ED · Cessna T310R · Reciprocating Engine Oil System > DIPSTICK BECAME SEPARATED FROM CAP ALLOWING THE DIPSTICK AND SPRING TO DROP INTO DIPSTICK TUBE. THERE ARE FOUR TUBES BUILT INTO THE CAP AND 3 OF THE 4 WERE BROKEN. THE NEW PART NUMBERED DIPSTICK IS MANUFACTURED TO ALLEVIATE THIS FROM HAPPENING AGAIN BY NOT - [SDR AU981655](https://openairdocs.org/sdr/AU981655.md): Engine · deteriorated · Dec 2, 1998 · Piper PA46310P · Engine (Reciprocating) > (AUS) DURING SCHEDULED ENGINE MAINTENANCE, THE FOLLOWING PROBLEMS WERE FOUND: 1. ENGINE OIL FILTER INSPECTED AND FOUND (EXCESSIVE) HIGH LEVELS OF COPPER. 2. TWO CYLINDERS REMOVED DUE TO LOW COMPRESSION. 3. SUMP REMOVED - MINOR METAL PARTICLES FOUND. 4. - [SDR 98ZZZX4779](https://openairdocs.org/sdr/98ZZZX4779.md): Cylinder · cracked · Oct 28, 1998 · N3758C · Cessna 414 · Reciprocating Engine Cylinder Section > DURING 100-HOUR INSPECTION COMPRESSION CHECK, FOUND NR 3 CYLINDER CRACKED FROM THE EXHAUST VALVE GUIDE TO THE SPARK PLUG HOLE. - [SDR AU981311](https://openairdocs.org/sdr/AU981311.md): Pump · leaking · Aug 21, 1998 · Piper PA46310P · Engine Fuel Pump > (AUS) ENGINE FUEL PUMP LEAKING FROM AREA OF THE MIXTURE SHAFT. PART TC: 787. - [SDR AU980911](https://openairdocs.org/sdr/AU980911.md): Bracket · cracked · Jul 29, 1998 · Cessna 310R · Wing Miscellaneous Structure > (AUS) WING BRACKET CRACKED. - [SDR AU980383](https://openairdocs.org/sdr/AU980383.md): Engine · misrepaired · Apr 6, 1998 · Piper PA46310P · Engine (Reciprocating) > (AUS) BROKEN MAIN BEARING PIECES FOUND IN SUMP. AFTER ENGINE STRIP-DOWN, THE FOLLOWING DEFECTS WERE FOUND: 1. OVERSIZED PISTON AND CYLINDER ASSEMBLIES FITTED. 2. SEVERE BEARING SADDLE FRETTING CAUSING MAIN BEARING MIGRATION. 3. CRANKCASE SEVERELY CRACKE - [SDR 97ZZZX4248](https://openairdocs.org/sdr/97ZZZX4248.md): Spring · broken · Sep 17, 1997 · Cessna T310R · Reciprocating Engine Cylinder Section > ENGINE RUNNING ROUGH. EXHAUST VALVE LEAKING ON COMPRESSION TEST. FOUND OUTER SPRING BROKEN 180 HOURS S.F.R. - [SDR 97ZZZX1007](https://openairdocs.org/sdr/97ZZZX1007.md): Camshaft · failed · Feb 26, 1997 · Reciprocating Engine Power Section > TSIO520VB ENGINE REPORTED FAILURE. FOUND CAMSHAFT FAILED JUST FORWARD OF GOVERNOR DRIVE GEAR. RENDERED GOVERNOR INOPERATIVE. - [SDR AU961202](https://openairdocs.org/sdr/AU961202.md): Rivet · deteriorated · Aug 12, 1996 · Cessna 320D · Fuselage Main, Bulkhead > (AUS) RH AND LH AFT CANTED BULKHEAD RIVETS DETERIORATED - RIVET HEADS MISSING - [SDR CA960305201](https://openairdocs.org/sdr/CA960305201.md): Exhaust Tee · cracked · Feb 29, 1996 · Piper PA46310P · Engine Collector/Tailpipe/Nozzle > (CAN) EXTENSIVE CRACKING OF THIS EXHAUST COMPONENT CAUSED A LOSS OF MANIFOLD PRESSURE DUE TO TURBOCHARGER INACTIVITY. THE LEFT REAR ENGINE ISOLATOR RECEIVED HEAT DAMAGE AS WELL. INITIAL METALURGICAL TESTS INDICATE STRESS CRACKING LIKELY CAUSED BY INSTALLATION - [SDR 95ZZZX965](https://openairdocs.org/sdr/95ZZZX965.md): Capacitor · failed · Feb 7, 1995 · N5094C · Cessna T310R · Magneto/Distributor > DURING ENGINE RUN-UP FOR A ROUTINE 50-HOUR INSPECTION, THE MECHANIC NOTED THE RIGHT ENGINE, RIGHT MAGNETO DID NOT RESPOND TO THE IGNITION SWITCH. FURTHER INVESTIGATION REVEALED THE MAGNETO CAPACITOR TO BE FAULTY. AFTER REPLACING THE CAPACITOR, THE MAGNETO OP ## 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 = 'TSIO520B' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/engine/continental-tsio-520-b/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.