# Service difficulty reports: Continental TSIO-520-UB

A list on [Continental TSIO-520-UB](https://openairdocs.org/engine/continental-tsio-520-ub.md).

Newest first. General aviation reporting is voluntary.

- [SDR 2014FA0000700](https://openairdocs.org/sdr/2014FA0000700.md): Cylinder Head · cracked · Dec 12, 2014 · N6728F · Beech B36TC · Reciprocating Engine Cylinder Section
  > DURING AN INSPECTION, IT WAS NOTICED ON THE TOP COWL BLACK SOOT NEAR CYLINDER NR 5. COMPRESSION TEST DONE AND CYLINDER SPRAYED WITH SOAP SOLUTION. BUBBLES WERE SEEN WHERE THE CYLINDER HEAD AND BARREL ATTACH. CYLINDER REMOVED AND CRACK FOUND. THIS IS CYLIND
- [SDR 2014FA0000001](https://openairdocs.org/sdr/2014FA0000001.md): Plate · cracked · Jan 3, 2014 · N38PK · Beech B36TC · Exhaust Turbocharger
  > ENGINE WAS IN OVERHAUL, A REBUILT TURBOCHARGER WAS INSTALLED ON THE ENGINE AT THAT TIME. THE ENGINE WAS INSTALLED, THE TURBOCHARGER WAS REMOVED DUE TO AN OIL LEAK AND RETURNED. TURBOCHARGER WAS REPAIRED AND REINSTALLED ON THE ENGINE. THE TURBOCHARGER WAS RE
- [SDR 2011FA0000456](https://openairdocs.org/sdr/2011FA0000456.md): Motor · failed · Jun 22, 2011 · N222L · Cessna 320E · Cabin Cooling System
  > AIR-CONDITIONING VENT BLOWER MOTOR FAILED INTERNALLY. SHORTED-OUT AND FILLED THE COCKPIT/CABIN WITH SMOKE. REPLACED WITH NEW UNIT. OPS CKD OK.
- [SDR 2011FA0000405](https://openairdocs.org/sdr/2011FA0000405.md): Rotor · open · Jun 2, 2011 · N60WB · Beech A36TC · DC Generator-Alternator
  > ALTERNATOR ROTOR OHM CHECK INFINITE.
- [SDR 2010FA0001199](https://openairdocs.org/sdr/2010FA0001199.md): Camshaft · spalled · Nov 24, 2010 · N72LR · Beech B36TC · Reciprocating Engine Power Section
  > DURING CYLINDER REPLACEMENT DUE TO LOW COMPRESSION FOUND NR3 & NR4 INTAKE LOBE ON CAM WORN AND SPALLING. ENGINE REMOVED FOR CAM REPLACEMENT OR ENGINE O/H. SPALLING OF LIFTER FACES ALSO NOTED.
- [SDR 2009FA0000333](https://openairdocs.org/sdr/2009FA0000333.md): Support · arced · Apr 24, 2009 · N65335 · Beech B36TC · Fuselage Miscellaneous Structure
  > DURING FLIGHT THE PILOT NOTICED THE INSTRUMENT SUBPANEL LIGHTING FLICKERING. UPON INSP THE WIRE BUNDLE THAT CROSSES OVER THE CENTER SUPPORT FWD OF THE INSTRUMENT PANEL HAD (2) WIRES CHAFED AND ARCING ON THE SUPPORT. DAMAGED SECTION OF THE WIRING WAS REPLACED A
- [SDR FTU2004F00005](https://openairdocs.org/sdr/FTU2004F00005.md): Seal · damaged · Jul 21, 2004 · N678DR · Beech A36TC · Reciprocating Engine Cylinder Section
  > AC ENGINE WAS DRIPPING OIL. ALL CYLINDERS LOOKED LIKE THEY HAVE BEEN REPLACED RECENTLY. FURTHER INVESTIGATION REVEALED MOST OF PUSH ROD HOUSING SEALS AT CYLINDER HEAD ATTACH POINT WERE DAMAGED OR NOT PROPERLY INSTALLED. IT HAS ALSO BEEN NOTICED THAT ECI PUS
- [SDR Q532004F00000](https://openairdocs.org/sdr/Q532004F00000.md): Connecting Rod · bent · Jul 1, 2004 · N8072G · Beech B36TC · Reciprocating Engine Power Section
  > ROUGH RUNNING ENGINE, PULLED NR 4 CYLINDER FOUND CONNECTING ROD HAD SLIGHT BEND. CAM SHAFT LOBES FORWARD OF CYL 4, WORN OUT.
- [SDR AKG2004F00006](https://openairdocs.org/sdr/AKG2004F00006.md): Nut · loose · Mar 15, 2004 · N74MT · Beech B36TC · Reciprocating Engine Power Section
  > WHILE COMPLETING AN ANNUAL INSPECTION. ONE OF THE CYLINDER RET BASE NUTS FOR THE NR 4 CYLINDER WAS MISSING. NUT WAS FOUND BETWEEN CYLINDER. TORQUE CHECK MADE OF THE OTHER NUTS FOUND 3 MORE LOOSE. WE CHECKED THE OTHER CYLINDER AND FOUND THEN TO BE OK. ALL
- [SDR PCP2003F00000](https://openairdocs.org/sdr/PCP2003F00000.md): Clamp · damaged · Jun 23, 2003 · N842BE · Beech B36TC · Landing Gear Retraction/Extension System
  > OWNER REPORTED, UNABLE TO ACHIEVE GEAR DOWN AND LOCK ON APPROACH TO LANDING. GEARS WERE MANUALLY EXTENDED IAW POH EMERGENCY GEAR EXTENSION PROCEDURES AND THE AIRCRAFT LANDED WITHOUT INCIDENT. POST FLIGHT INSPECTION BY TECH REVEALED A HEAT DUCT CLAMP (UNDER C
- [SDR THG2003F00000](https://openairdocs.org/sdr/THG2003F00000.md): Rod End · inoperative · Mar 17, 2003 · N36WP · Beech A36 · Nose/Tail Landing Gear Strut/Axle
  > PILOT HEARD LOUD NOISE DURING FLIGHT AS MAIN LANDING GEAR WAS ACCUATED TO UP POSITION, GOT UNSAFE LANDING GEAR WARNING LIGHT. PILOT ASKED FOR ASSISTANCE FROM LOCAL FBO. ON FLY-BY, PERSONNEL ON GROUND NOTICED THAT NOSE GEAR WAS NOT LOCKED IN DOWN POSITION; BU
- [SDR 2002FA0000386](https://openairdocs.org/sdr/2002FA0000386.md): Turbocharger · leaking · Feb 4, 2002 · N234PT · Beech B36TC · Exhaust Turbocharger
  > TURBOCHARGER LEAKING OIL IN INDUCTION SYSTEM. RECHECKED SYSTEMS AS PER MFG. AND MM. THIS IS NR2 OF SEVERAL ON THIS ENGINE.
- [SDR 20010511CW006](https://openairdocs.org/sdr/20010511CW006.md): Ring · cracked · Apr 23, 2001 · N74MT · Beech B36TC · Heating System
  > IN COMPLETING ANNUAL INSPECTION, CABIN HEATER ASSEMBLY WAS REMOVED FOR LEAK INSPECTION. FOUND ONE OF MUFF SUPPORT RINGS CRACKED HALF WAY AROUND. IF THIS WOULD HAVE CRACKED ALL THE WAY OFF THE EDGE WOULD HAVE CUT THROUGH EXHAUST PIPE PART OF MUFF, THIS WOULD
- [SDR 20001120SH028](https://openairdocs.org/sdr/20001120SH028.md): Bracket · broken · Nov 10, 2000 · N376RH · Beech B36TC · Exhaust Turbocharger
  > TURBO CONTROLLER SUPPORT BRACKET BROKEN AT CASE ATTACHMENT POINT. (X)
- [SDR 20001218SH015](https://openairdocs.org/sdr/20001218SH015.md): Cylinder · failed · Nov 10, 2000 · N3181U · Beech B36TC · Reciprocating Engine Cylinder Section
  > CYLINDER HAD LOW COMPRESSION. (X)
- [SDR 20001214SH022](https://openairdocs.org/sdr/20001214SH022.md): Exhaust Valve · grooved · Nov 1, 2000 · N36TU · Beech B36TC · Reciprocating Engine Cylinder Section
  > DUE TO LOW COMPRESSION READING, CYLINDER WAS BORESECOPED. EXTREME OVERHEATING OF EXHAUST VALVE WAS NOTED. WEAR GROOVE WAS CUT INTO VALVE FACE BY SEAT. REMOVED CYLINDER. UPON INSPECTION, UNUSUAL WEAR WAS DUE TO MISALIGNMENT OF VALVE GUIDE OR VALVE SEAT. CY
- [SDR 20001012SH030](https://openairdocs.org/sdr/20001012SH030.md): Tube · rusted · Sep 4, 2000 · N1361G · Cessna 402C · Elevator Control System
  > REMOVED RIGHT ELEVATOR FROM AIRCRAFT TO REPLACE HINGE BEARINGS. CLEANED INSIDE TUBE AND NOTICED 3 RUSTED HOLES THROUGH TUBE. REPLACED TUBE WITH NEW AND LUBED INSIDE TUBE. (X)
- [SDR 98ZZZX4048](https://openairdocs.org/sdr/98ZZZX4048.md): Magneto · failed · Sep 15, 1998 · N121Z · Beech 58P · Magneto/Distributor
  > LEFT MAG FAILED. RIGHT ENGINE FAILED AT LIFT-OFF. LEFT MAG REMOVED AND DISASSEMBLED. FOUND DISTRIBUTOR BLOCK BUSHING LOOSE IN BLOCK P/N 10-391586. REPLACED BLOCK AND GEAR OPS CHECK OK.
- [SDR 98ZZZX3281](https://openairdocs.org/sdr/98ZZZX3281.md): Drive Shaft · seized · Aug 13, 1998 · N3236Z · Beech B36TC · Engine Fuel Pump
  > ENGINE DRIVEN FUEL PUMP SEIZED AND SHEARED THE DRIVE SHAFT. THE AIRCRAFT MADE A NORMAL LANDING AND ENGINE SHUT DOWN ON THE PARKING RAMP. UPON ENGINE START-UP, THE SHAFT APPARENTLY SHEARED BECAUSE IT WOULD NOT CONTINUE RUNNING WITHOUT THE ELECTRIC BOOST PUMP
- [SDR 98ZZZX988](https://openairdocs.org/sdr/98ZZZX988.md): Valve Spring · broken · Feb 10, 1998 · N6875D · Cessna 402C · Reciprocating Engine Cylinder Section
  > RIGHT ENGINE RUNNING ROUGH. FOUND 8 OF 12 VALVE SPRINGS BROKEN. REMOVED AND REPLACED ALL VALVE SPRINGS.
- [SDR 98ZZZX989](https://openairdocs.org/sdr/98ZZZX989.md): Valve Spring · broken · Feb 10, 1998 · N6875D · Cessna 402C · Reciprocating Engine Cylinder Section
  > RIGHT ENGINE RUNNING ROUGH. FOUND 8 OF 12 VALVE SPRINGS BROKEN. REMOVED AND REPLACED ALL VALVE SPRINGS.
- [SDR 98ZZZX1125](https://openairdocs.org/sdr/98ZZZX1125.md): Line · failed · Feb 1, 1998 · N3246M · Cessna 402C · Fuel Divider
  > FUEL REF LINE FROM FLOW DIVIDER TO BAFFLE BROKE CAUSING A ROUGH RUNNING ENGINE. AIRCRAFT LANDED WITHOUT INCIDENT.
- [SDR 97ZZZX4638](https://openairdocs.org/sdr/97ZZZX4638.md): Turbocharger · seal leak · Oct 16, 1997 · N7250Z · Beech B36TC · Exhaust Turbocharger
  > FOUND OIL LEAKING FROM TURBOCHARGER ON COMPRESSOR SIDE AND EXHAUST SIDE OF TURBOCHARGER. SENT IN FOR OVERHAUL AND FOUND EXHAUST TURBINE WHEEL OUT OF BALANCE WHICH WORE OUT THE OIL SEALS ON THE HOT AND COLD SIDE OF TURBO. ESTIMATED TIME ON PART, 1,000 HOURS.
- [SDR 97ZZZX968](https://openairdocs.org/sdr/97ZZZX968.md): Line · leaking · Jan 15, 1997 · N317C · Beech B36TC · Engine Fuel Distribution
  > ENGINE WOULD NOT IDLE ON FINAL. PRESSURE CHECKED HOSE AND FOUND SEVERAL LEAKS. (NOT VISIBLE WITH FIRE SLEEVE ON). HOSE DATE 4TH QUARTER '94. A/C AIRWORTHINESS 2-95.
- [SDR 97ZZZX271](https://openairdocs.org/sdr/97ZZZX271.md): Plunger · fod malfunction · Dec 23, 1996 · N26150 · Cessna 402C · Reciprocating Engine Oil System
  > MECHANIC NOTICED THAT OIL PRESSURE DROPPED TO ZERO WHEN THROTTLE WAS RETARDED. FOUND 3 PIECES OF SAFETY WIRE STUCK UNDER OIL PRESSURE RELIEF VALVE. REMOVED THE WIRE AND OPS CHECKED GOOD.
- [SDR 97ZZZX273](https://openairdocs.org/sdr/97ZZZX273.md): Cover Assy · leaking · Dec 23, 1996 · N26150 · Cessna 402C · Reciprocating Engine Oil System
  > OIL PUMP COVER IMPROPERLY INSTALLED BY OVERHAULER CAUSING A SERIOUS LEAK. RE-SEALED COVER PER TCM O/H MANUAL. FIXED THE PROBLEM.
- [SDR 96ZZZX5239](https://openairdocs.org/sdr/96ZZZX5239.md): Turbocharger · seal failed · Sep 30, 1996 · N2714B · Cessna 402C · Exhaust Turbocharger
  > DURING PRE-OILING OF NEWLY INSTALLED TCM REBUILT ENGINE, OIL LEAKED OUT OF EXHAUST TAILPIPE. FOUND OIL POURING FROM TURBINE SHAFT LIKE SEAL WAS NOT INSTALLED.
- [SDR 95ZZZX3678](https://openairdocs.org/sdr/95ZZZX3678.md): Pump · gear failed · Jun 18, 1995 · N25LR · Beech A36TC · Reciprocating Engine Oil System
  > SCAVAGE PUMP DRIVE GEAR FRACTURED IN 4 LOCATIONS FOLLOWING HEAVY WEAR OF TOOTH PROFILE. TOTAL ENGINE FAILURE FOLLOWED. AD 89-24-01R1 AND SB M90-6 PERTAIN TO THIS PUMP, BUT WERE NOT DUE YET.
- [SDR 95ZZZX2729](https://openairdocs.org/sdr/95ZZZX2729.md): Pan · cracked · May 30, 1995 · N8285C · Beech A36 · Reciprocating Engine Oil System
  > HOLE HAD BROKEN OUT IN CENTER OF PAN. PAN IS FORMED FROM.032. NOTIFIED BEECH OF PROBLEM. INSTALLED A NEW PART. BEECH INDICATED THEY MAY USE.061 MATERIAL SOMETIME IN THE FUTURE.
- [SDR 95ZZZX2543](https://openairdocs.org/sdr/95ZZZX2543.md): Ring · stuck · May 3, 1995 · Reciprocating Engine Cylinder Section
  > ENGINE HAS BEEN RUN WITH MOBIL AV-1 ENGINE OIL. ENGINE STARTED TO BLOW OIL OUT OF BREATHER TUBE. ENGINE DISASSEMBLED AND INSPECTED TO DETERMINE CAUSE. FOUND ALL OIL RINGS STUCK IN PISTONS DUE TO LEAD BUILD-UP. FOUND CYLINDER WALLS WORN, FOUND EXCESSIVE SLU
- [SDR 95ZZZX1148](https://openairdocs.org/sdr/95ZZZX1148.md): Cylinders · excess worn · Jan 12, 1995 · N48PD · Beech A36TC · Reciprocating Engine Cylinder Section
  > FACTORY NEW CYLINDERS TT 581.4 HOURS. INSTALLED 2-1-91, LOW COMPRESSION ALL CYLINDERS. CYLINDERS ARE WORN BEYOND SERVICEABLE LIMITS AND HAVE SEVERE RING WEAR. ROCKER SHAFTS ARE SEVERELLY WORN AND UNAIRWORTHY.

## 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 = 'TSIO520UB'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/engine/continental-tsio-520-ub/reports

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