# Service difficulty reports: Continental GTSIO-520-C

A list on [Continental GTSIO-520-C](https://openairdocs.org/engine/continental-gtsio-520-c.md).

Newest first. General aviation reporting is voluntary.

- [SDR 17GR159B092401](https://openairdocs.org/sdr/17GR159B092401.md): Governor · failed · Sep 22, 2015 · N420RA · Cessna 421C · Propeller Governor
  > AFTER ROTATION PROPELLER WENT INTO FEATHER AND ENGINE SHUT DOWN WITHOUT ACTION ON THE PART OF THE PILOT. GOVERNOR WAS FOUND TO BE BEYOND ECONOMICAL REPAIR. PROPELLER AND GOVERNOR O/H 1006.8 PRIOR TO THIS EVENT. PILOT WAS BALE TO CONTINUE CLIMB ON 1 ENGINE AND
- [SDR HYIA20150729003](https://openairdocs.org/sdr/HYIA20150729003.md): Control Cable · disconnected · Jul 28, 2015 · N6183J · Cessna 402C · Propeller Controlling System
  > PILOT REPORTED NO PROPELLER RPM CONTROL THROUGH LEFT PROPELLER LEVER. FOUND LEFT PROPELLER CONTROL CABLE DISCONNECTED AT GOVERNOR. CONNECTED WITH PROPER HARDWARE IAW MM 61-20-00. OPS CHECKED GOOD.
- [SDR 2014FA0000721](https://openairdocs.org/sdr/2014FA0000721.md): Screw · sheared · Dec 25, 2014 · N21WT · Cessna 421B · Reciprocating Engine Cylinder Section
  > RPM AND MANIFOLD PRESSURE STARTED FLUCTUATING FOR THE RT ENGINE. WHITE SMOKE FROM TURBO CHARGER VENTS WAS NOTED AS WELL AS OIL STREAKS NOTED. OIL PRESSURE DROPPED TO BOTTOM OF GREEN ARC ON THE OIL PRESSURE GAGE. EMERGENCY PROCEDURE CHECKLIST CALLED FOR ENGI
- [SDR BGJA2014042300002](https://openairdocs.org/sdr/BGJA2014042300002.md): Alternator · failed · Apr 3, 2014 · N550MA · Cessna 404 · DC Generator-Alternator
  > THE ACFT HAD TOTAL ELECTRICAL FAILURE DURING FLIGHT, DUE TO BOTH CHARGING SYSTEMS FAILING TOGETHER. RT ALTERNATOR FAILED DURING CRUISE, SHORTLY AFTER LT ALTERNATOR FAILED DUE TO A FAILED DRIVE CLUTCH. THE RT ALTERNATOR APPEARED TO HAVE AN INTERNAL SHORT THAT
- [SDR 2012FA0000596](https://openairdocs.org/sdr/2012FA0000596.md): Clamp · cracked · Aug 24, 2012 · N678DB · Cessna 421B · Exhaust Turbocharger
  > TURBOCHARGER TURBINE TO TAILPIPE V BAND CLAMP, FOUND TO HAVE A 3" LONG CRACK ALONG THE OUTER PERIMETER OF THE V BAND. CRACK SEPARATION WAS LESS THAN.0625" AT THE WIDEST POINT. THIS IS NOT A MULTI-SEGMENT V BAND. NO EXHAUST LEAK EVIDENT. DISCOVERED DURING
- [SDR 2010FA0000522](https://openairdocs.org/sdr/2010FA0000522.md): Blade · loose · May 21, 2010 · N67JV · Cessna 421C · Propeller Blade Section
  > ON CLIMB OUT, ACFT BEGAN TO SHAKE, IT BEGAN TO SHAKE WORSE AS THE FLIGHT PROGRESSED. FLIGHT LANDED SAFELY AT THE INTENDED AIRPORT. AFTER INSPECTION IT WAS REVEALED ONE OF THE PROPELLER BLADES WAS LOOSE. REMOVED PROPELLER AND SENT TO PROP SHOP FOR OVERHAUL.
- [SDR T9ZR725Y4370/40](https://openairdocs.org/sdr/T9ZR725Y4370%2F40.md): Blade · leaking · Dec 9, 2009 · N421JS · Cessna 421C · Propeller Blade Section
  > PROP WAS OBSERVED TO BE LEAKING GREASE FROM TWO BLADE SHANK AREAS. SPINNER WAS REMOVED FOR INSP AND ALL 3 BLADES APPEAR TO BE LEAKING GREASE. ONE BLADE WAS OBSERVED TO HAVE EXCESSIVE BLADE SHANK MOVEMENT BEYOND ALLOWABLE LIMITS. WHEN BLADES WERE CHECK FOR BLAD
- [SDR T9ZR725Y4370/41](https://openairdocs.org/sdr/T9ZR725Y4370%2F41.md): Blade · damaged · Dec 9, 2009 · N421JS · Cessna 421C · Propeller Blade Section
  > PROP WAS OBSERVED TO BE LEAKING GREASE FROM 2 BLADE SHANK AREAS. SPINNER WAS REMOVED FOR INSP AND ALL 3 BLADES APPEAR TO BE LEAKING GREASE. 1 BLADE WAS OBSERVED TO HAVE EXCESSIVE BLADE SHANK MOVEMENT BEYOND ALLOWABLE LIMITS. WHEN BLADES WERE CHECK FOR BLADE TW
- [SDR 2009FA0000845](https://openairdocs.org/sdr/2009FA0000845.md): Cylinder · cracked · Oct 6, 2009 · N54DR · Cessna 421B · Reciprocating Engine Cylinder Section
  > REPAIRED CYLINDER FOUND TO BE CRACKED SPARK PLUG TO INJECTOR.
- [SDR 2009FA0000844](https://openairdocs.org/sdr/2009FA0000844.md): Cylinder · cracked · Sep 19, 2009 · N54DR · Cessna 421B · Reciprocating Engine Cylinder Section
  > REPAIRED CYLINDER FOUND TO BE CRACKED SAME PLACE AS OTHERS, SPARK PLUG TO INJECTOR.
- [SDR 2009FA0000843](https://openairdocs.org/sdr/2009FA0000843.md): Cylinder · cracked · Apr 17, 2009 · N54DR · Cessna 421B · Reciprocating Engine Cylinder Section
  > REPAIRED CYLINDER FOUND TO BE CRACKED
- [SDR 2009FA0000841](https://openairdocs.org/sdr/2009FA0000841.md): Cylinder · cracked · Dec 5, 2008 · N54DR · Cessna 421B · Reciprocating Engine Cylinder Section
  > 12/25/08 6 CRACKED TCM CYLINDERS WERE REPLACED.
- [SDR D382008F00000](https://openairdocs.org/sdr/D382008F00000.md): Thru Bolt · broken · Aug 29, 2008 · N421RM · Cessna 421A · DC Generator-Alternator
  > 22.2 HOURS AFTER INSTALLING AN OVERHAULED (ALV9510) ALTERNATOR, THE PILOT CAME TO ME ABOUT A THRU BOLT THAT WAS COMING OUT OF THE ALTERNATOR CASE. THERE WAS ONE THRU BOLT STICKING OUT OF THE CASE AND ANOTHER HAD COME OUT AND WAS GONE. THE ALTERNATOR WAS CHARGI
- [SDR TVD2006F00000](https://openairdocs.org/sdr/TVD2006F00000.md): Cylinder · cracked · Mar 30, 2006 · N4549Q · Cessna 402A · Reciprocating Engine Cylinder Section
  > NR 3 CYLINDER ON THE LT ENGINE CRACKED COMPLETELY AROUND THE HEAD, APPROX 1.25 INCHES ABOVE THE BASE OF THE HEAD. THE CRACK WAS COMPLETELY AROUND THE CIRCUMFERANCE OF THE HEAD AND ALLOWED THE HEAD TO SLIP OFF OF THE BARREL, HALF AN INCH. THE PROP WAS FEATHER
- [SDR 2006FA0000002](https://openairdocs.org/sdr/2006FA0000002.md): Circuit Breaker · corroded · Jan 4, 2006 · N678DB · Cessna 421B · Electrical Power System Wiring
  > AVIONICS MASTER CIRCUIT BREAKER SWITCH FOUND INTERMITTENT DURING COMPLIANCE WITH AD 2005-20-05, MEB05-1. PN 593-240-101 NOT FOUND IN MFG PARTS MANUAL BUT THIS WAS CLEARLY THE ORIGINAL FACTORY INSTALLED CB. PROBLEM NR1, INTERNAL COMPONENTS OF CB HAD SEVERE C
- [SDR TZR2005F00022](https://openairdocs.org/sdr/TZR2005F00022.md): Cylinder · cracked · Jun 10, 2005 · N409TE · Cessna 401A · Reciprocating Engine Cylinder Section
  > CRACK IS TYPICAL FOR THESE CYLINDERS. RT NR 4. (SW05200509363). (K)
- [SDR TZR2005F00023](https://openairdocs.org/sdr/TZR2005F00023.md): Cylinder · cracked · Jun 10, 2005 · N409TE · Cessna 401A · Reciprocating Engine Cylinder Section
  > CRACK IS TYPICAL FOR THESE CYLINDERS, RT ENGINE NR 3. (K)
- [SDR TZR2005F00024](https://openairdocs.org/sdr/TZR2005F00024.md): Cylinder · cracked · Jun 10, 2005 · N406TE · Cessna 402B · Reciprocating Engine Cylinder Section
  > CRACK IS TYPICAL FOR THESE CYLINDERS. RT ENGINE, NR 3. (SW05200509364) (K)
- [SDR TZR2005F00025](https://openairdocs.org/sdr/TZR2005F00025.md): Cylinder · cracked · Jun 10, 2005 · N405TE · Cessna 401 · Reciprocating Engine Cylinder Section
  > CRACK IS TYPICAL FOR THESE CYLINDERS. RT ENGINE, NR 3 CYL. (SW05200509364) (K)
- [SDR TZR2005F00026](https://openairdocs.org/sdr/TZR2005F00026.md): Cylinder · cracked · Jun 10, 2005 · N409TE · Cessna 401A · Reciprocating Engine Cylinder Section
  > CRACK IS TYPICAL FOR THESE CYLINDERS, RT ENGINE NR 6 CYLINDER. (SW05200509365) (K)
- [SDR 2005FA0001054](https://openairdocs.org/sdr/2005FA0001054.md): Antenna · inoperative · Apr 14, 2005 · N90193 · Cessna T207 · Central Display
  > FOUND UPPER UAT ANTENNA UNSERVICEABLE. (K)
- [SDR TZR2005F00017](https://openairdocs.org/sdr/TZR2005F00017.md): Cylinder · cracked · Apr 11, 2005 · N409TE · Cessna 401A · Reciprocating Engine Cylinder Section
  > CRACKED FROM EXHAUST VALVE TO TOP SPARK PLUG. ECI CYLINDER. (SW05200507950) (K)
- [SDR 2005FA0000517](https://openairdocs.org/sdr/2005FA0000517.md): Hinge · misinstalled · Mar 29, 2005 · N487DH · Cessna 421B · Rudder Structure
  > AIRCRAFT WAS HERE FOR COMPLETE EXTERIOR REPAINT. AFTER REMOVING RUDDER, COMPLIED WITH MFG MEB004. IT IS JUST A VISUAL INSPECTION, BUT IT DOES REQUIRE REMOVING THE RUDDER. FOUND THAT RUDDER HINGE ASSY WAS INSTALLED UPSIDE DOWN. FOUND THAT ABOUT 75 PERCENT O
- [SDR 2005FA0000396](https://openairdocs.org/sdr/2005FA0000396.md): Rib · cracked · Feb 25, 2005 · N421CT · Cessna 421B · Wing, Rib/Bulkhead
  > DURING AN ANNUAL INSP, NOTED CRACKS IN LT AND RT WING T/E RIBS AT FORWARD END AFT SPAR ATTACHMENT POINT AREAS. AFFECTED RIBS ARE FIRST RIBS IB OF SPOILER SYSTEM ACTUATOR ATTACH POINTS. ALSO FOUND CRACKED AREA IN WING OB T/E SKIN PANEL AT ATTACHMENT POINT TO
- [SDR 2005FA0000397](https://openairdocs.org/sdr/2005FA0000397.md): Bulkhead · cracked · Feb 25, 2005 · N421CT · Cessna 421B · Wing, Rib/Bulkhead
  > DURING AN ANNUAL INSPECTION, FOUND AFT BULKHEAD OF THE LT WING TIP TANK ASSY. CRACKED THROUGH FROM APPROXIMATE CENTER OF THE IB LIGHTENING HOLE HORIZONTALLY TO THE BULKHEAD IB EDGE. CRACKED AREA IS ADJACENT TO AFT ATTACH POINT FOR THE TIP TANK ASSY. AIRCRAF
- [SDR 2004FA0000927](https://openairdocs.org/sdr/2004FA0000927.md): Bracket · misinstalled · Dec 21, 2004 · N678DB · Cessna 421B · Rudder Control System
  > COMPLIED WITH MFG MEB 00-4 RUDDER BEARING INSPECTION/REPLACEMENT. FOUND RUDDER LOWER HINGE BEARING BRACKET INSTALLED UPSIDE DOWN FROM FACTORY. REPLACEMENT PROCEDURE DESCRIBED IN MEB FOUND ERRONEOUS AND INADEQUATE TO COMPLETE SATISFACTORY REPLACEMENT OF BRACK
- [SDR 2005FA0000125](https://openairdocs.org/sdr/2005FA0000125.md): Crankshaft · broken · Dec 2, 2004 · N210FC · Cessna 421B · Reciprocating Engine Power Section
  > CRANKSHAFT BROKE AT NR 2 MAIN. NO SIGNS OF OIL STARVATION. NO SIGNS OF CASE FRETTING. CASE WAS DAMAGED BEYOND REPAIR. (K)
- [SDR 2004FA0000355](https://openairdocs.org/sdr/2004FA0000355.md): Cylinder Head · cracked · Apr 27, 2004 · N5988M · Cessna 421B · Reciprocating Engine Cylinder Section
  > AIRCRAFT NDT SERVICE WAS CONTRACTED TO VERIFY CRACKS IN THE ENGINE CYLINDER HEADS BETWEEN THE SPARK PLUG AND FUEL INJECTOR MOUNTING BOSS. AN EDDY CURRENT EXAMINATION DETERMINED THAT ALL TWELVE CYLINDER HEADS WERE CRACKED. THE OPERATOR REPLACED ALL TWELVE CYLI
- [SDR 2003FA0001035](https://openairdocs.org/sdr/2003FA0001035.md): Bearing · destroyed · Sep 20, 2003 · N41053 · Cessna 421B · Nose/Tail Landing Gear
  > AIRCRAFT LANDED EXITED ONTO TAXIWAY, FELT VIBRATION IN NOSE OF AIRCRAFT, FELL NOSE FIRST ONTO TAXIWAY. THE BEARINGS IN NOSE WHEEL FROZE AND SHEARED AXIAL. LANDING GEAR STRUT STRUCK GROUND AND COLLAPSED. THE BEARING AND ROLLER RETAINER ON ONE SIDE HAD DISINT
- [SDR 2003F00283](https://openairdocs.org/sdr/2003F00283.md): Gear · broken · Apr 1, 2003 · N421A · Cessna 421A · Reciprocating Engine Power Section
  > REMOVED RIGHT INOPERATIVE ALTERNATOR FOR REPAIR AND NOTED. CRANKCASE DAMAGED, ALTERNATOR FACE GEAR, BROKEN AND LOOSE. FACE GEAR ATTACH BOLTS, DAMAGED AND LOOSE. (M)
- [SDR 2002FA0001271](https://openairdocs.org/sdr/2002FA0001271.md): Windshield · failed · Oct 31, 2002 · N333CJ · Cessna 421B · Windshield/Door Rain/Ice Removal
  > WHILE AT CRUISE ALT FL240, PILOTS FRONT WINDSHIELD DEPARTED THE AIRCRAFT ALONG WITH PART OF THE INSTRUMENT GLARE SHIELD AND PILOTS SUN VISOR. LAB EXAM OF WINDSHIELD DID NOT REVEAL POINT OF FAILURE BUT DID STATE NUMEROUS INSTALLATION DISCREPANCIES. MAINTENANC
- [SDR TXH2002F00000](https://openairdocs.org/sdr/TXH2002F00000.md): Downlock Switch · failed · Aug 15, 2002 · N4544Q · Cessna 402A · Landing Gear Position and Warning
  > PILOT REPORTED LT MAIN GEAR DOWN AND LOCKED BUT NO GEAR DOWN INDICATION. FOUND DOWN LOCK SWITCH FAULTY. REPLACED SWITCH AND COPLETED RETRACTION TEST SATISFACTORY.
- [SDR 2002FA0000656](https://openairdocs.org/sdr/2002FA0000656.md): Insulator · burned · May 8, 2002 · N241MW · Cessna 421C · Engine Fireseals
  > ON REPLACING LEFT WING LOCKER FUEL CELL, DISCOVERED (PN 5656006-2), FIREWALL FIRE SCREEN COATING BURNED THROUGH BEHIND TURBOCHARGER. REMOVED RIGHT NACELLE TOP SKIN AND DISCOVERED OTHER (PN 5656006-2) FIREWALL FIRE SCREEN IN SIMILAR CONDITION. INSTALLED NEW
- [SDR MHJ2002F00000](https://openairdocs.org/sdr/MHJ2002F00000.md): Transfer Pump · inoperative · Jan 28, 2002 · N3208Q · Cessna 401 · Fuel Transfer Valve
  > TRANSFER PUMP, INOPERATIVE.
- [SDR 2002FA0000665](https://openairdocs.org/sdr/2002FA0000665.md): Structure · corroded · Nov 20, 2001 · N333SF · Cessna 411A · Nacelle/Pylon, Main Frame
  > DURING INSPECTION OF THE WING NACELLE BAGGAGE COMPARTMENT STRUCTURE CORROSION WAS DISCOVERED UNDER THE TRIM AND CARPETS. UPON REMOVAL OF THE NACELLE BAGGAGE COMPARTMENT TRIM AND CARPETS SEVER SURFACE CORROSION WAS DISCOVERED. MAJOR SECTION OF THE NACELLE STR
- [SDR IBU2001F00000](https://openairdocs.org/sdr/IBU2001F00000.md): Bolt · sheared · Nov 19, 2001 · N748CA · Cessna 421C · DC Generator-Alternator
  > ALTERNATOR CASE THIN BOLTS ARE SHEARING. BOLTS THAT RECOVERED FROM ENGINE COWLING, SHOWS SIGNS OF STRETCHING. BOLTS POSSIBLE OVER TORQUED FROM FACTORY.
- [SDR 2001FA0000462](https://openairdocs.org/sdr/2001FA0000462.md): Cylinder · malfunctioned · Oct 17, 2001 · N421CR · Cessna 421B · Reciprocating Engine Cylinder Section
  > LEFT ENGINE EXPERIENCED A VIBRATION. PILOT ELECTED TO LAND. REPLACED NR 2 CYLINDER. CLEANED VALVE GUIDES ON REMAINING CYLINDERS. REPLACED SPARK PLUG ON NR 1 CYLINDER. FLIGHT CHECK GOOD.
- [SDR VDQ2001F00000](https://openairdocs.org/sdr/VDQ2001F00000.md): Cylinder · cracked · Oct 12, 2001 · N90193 · Cessna T207 · Reciprocating Engine Cylinder Section
  > ALL 6 CYLINDER CRACKED AT 781.6 HOURS SINCE NEW. SERIAL NUMBERS: 52A0016149, 52A0016150, 52A0016201, 52A0016202, 52A0016215, 52A0016217
- [SDR VDQ2001F00001](https://openairdocs.org/sdr/VDQ2001F00001.md): Cylinder · cracked · Oct 12, 2001 · N90193 · Cessna T207 · Reciprocating Engine Cylinder Section
  > ALL 6 CYLINDERS CRACKED AT 781.6 HOURS SINCE NEW. SERIAL NUMBERS: 52A0016149, 52A0016150, 52A0016201, 52A0016202, 52A0016215, 52A0016217.
- [SDR VDQ2001F00003](https://openairdocs.org/sdr/VDQ2001F00003.md): Cylinder · cracked · Oct 12, 2001 · N90193 · Cessna T207 · Reciprocating Engine Cylinder Section
  > ALL 6 CYLINDERS CRACKED AT 781.6 HOURS SINCE NEW. SERIAL NUMBERS: 52A0016149, 52A0016150, 52A0016201, 52A0016202, 52A0016215, 52A0016217.
- [SDR 20010511CW010](https://openairdocs.org/sdr/20010511CW010.md): Spar Cap · cracked · May 11, 2001 · N100YR · Cessna 421B · Wing Spar
  > DURING AN ANNUAL INSPECTION, A CRACK APPROX 3 INCHES LONG WAS FOUND ON LEFT WING AFT SPAR, UPPER AFT CAP. BELOW BAGGAGE RACELLE.
- [SDR AU990862](https://openairdocs.org/sdr/AU990862.md): Switch · faulty · Aug 12, 1999 · Cessna 411 · Heating System
  > (AUS) COMBUSTION HEATER FAULTY. AIR VALVE SWITCH JAMMED IN THE ON POSITION. VENT MOTOR MAIN POSITIVE LEAD NOT LOCKED TO THE POWER SOURCE CAUSING ARCING ON THE POST. MAIN HEAD GASKET CRACKED AND PERISHED. FUEL NOZZLE CONTAMINATED WITH RUST AND SCUM. OVER
- [SDR AU970724](https://openairdocs.org/sdr/AU970724.md): Fitting · corroded · Jun 30, 1997 · Cessna 411 · Fuselage, Wing Attach Fittings
  > (AUS) UPPER RH FUSELAGE WING ATTACHMENT FITTING CONTAINED EXFOLIATION CORROSION ON LOWER SURFACE
- [SDR 95ZZZX1456](https://openairdocs.org/sdr/95ZZZX1456.md): Starter Adapter · failed · Feb 10, 1995 · N44SC · Cessna 421A · Reciprocating Engine Rear Section
  > AIRCRAFT LANDED AFTER DARK 2-9-95, WITH THE LEFT ENGINE SHUT DOWN. FOUND STARTER ADAPTER HAD TWO BROKEN TEETH AND METAL THROUGHOUT THE ENGINE. VERY ROUGH AIRCRAFT.

## 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 = 'GTSIO520C'
ORDER BY difficulty_date DESC
```

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

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