# Service difficulty reports: Continental TSIO-520-VB

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

Newest first. General aviation reporting is voluntary.

Page 1 of 14 · 654 reports

- [SDR HYIA20250515001](https://openairdocs.org/sdr/HYIA20250515001.md): Wire · shorted · May 12, 2025 · N494BC · Cessna 402C · Electrical Power System Wiring
  > PILOT REPORTED LEFT ENGINE CYLINDER TEMP INDICATIONS WERE IN THE RED ON TAXI OUT. MAINTENANCE INSPECTED AND FOUND THE POSITIVE WIRE TO THE ALTERNATOR SHORTED INTO THE ADEL CLAMP AT THE CROSSOVER BEAM. THIS CAUSED DAMAGE TO THE SURROUNDING WIRE HARNESS AND HOSE
- [SDR 2024FA0000751](https://openairdocs.org/sdr/2024FA0000751.md): Impulse Coupling · failed · Oct 3, 2024 · Cessna 402C · Magneto/Distributor
  > IMPULSE COUPLING FAILURE CAUSED RT MAGNETO TO BE INOPERATIVE AND METAL CONTAMINATION OF ENGINE.
- [SDR HYIA20240321002](https://openairdocs.org/sdr/HYIA20240321002.md): Alternator · failed · Mar 20, 2024 · N3249M · Cessna 402C · DC Generating System
  > PILOT REPORTED RIGHT ALTERNATOR INOPERATIVE. MAINTENANCE INSPECTED AND FOUND THE ALTERNATOR HUB NUT MISSING, FLY WHEEL BOLTS MISSING AND DAMAGE TO THE FLY WHEEL. THE ENGINE IS BEING REPLACED DUE TO METAL CONTAMINATION.
- [SDR HYIA20240221001](https://openairdocs.org/sdr/HYIA20240221001.md): Engine · failed · Feb 17, 2024 · N290CA · Cessna 402C · Engine (Reciprocating)
  > ON APPROACH PILOT NOTICED A SUDDEN "BANG" ACCOMPANIED BY SLIGHT POWER & RPM LOSS ON THE LEFT ENGINE. SMOKE AND OIL BEGAN COMING FROM LEFT ENGINE. OIL PRESSURE DROPPED AND PILOT SECURED THE ENGINE PER COMPANY PROCEDURES. INITIAL INSPECTION FOUND THE NUMBER 6 CY
- [SDR HYIA20240321001](https://openairdocs.org/sdr/HYIA20240321001.md): Alternator · failed · Nov 30, 2023 · N267CA · Cessna 402C · DC Generating System
  > PILOT REPORTED RIGHT ALTERNATOR OUT LIGHT ILLUMINATED. MAINTENANCE INSPECTED AND FOUND ALTERNATOR HUB NUT MISSING AND METAL CONTAMINATION IN THE ENGINE. THE ENGINE WAS REPLACED.
- [SDR HYIA20231031001](https://openairdocs.org/sdr/HYIA20231031001.md): Throttle Body · backed out · Oct 29, 2023 · N6875D · Cessna 402C · Engine Fuel and Control
  > PILOT REPORTED LEFT THROTTLE STUCK AT APPROXIMATELY 34 INCHES MP WHEN REDUCING FROM TAKE OFF POWER TO CLIMB POWER. MAINTENANCE INSPECTED AND FOUND THE LEFT THROTTLE BODY LEVER PIN HAD BACKED OUT AND WAS CONTACTING THE IDLE STOP. THE PIN WAS REPLACED AND NO FUR
- [SDR 2023F00088](https://openairdocs.org/sdr/2023F00088.md): Line · blew out · Mar 9, 2023 · N55LP · Cessna 402C · Hydraulic Fluid Servicing
  > LINE ASSY GEAR RETRACTION HOSE P/N 58 0108-1 HAD ITS FLAIR SPLIT UPON INITIAL GEAR RETRACTION DEPOSITING ALL HYDRAULIC FLUID OVERBOARD. NOSE GEAR RETRACTED BUT THE MAIN LANDING GEAR REMAINED IN THE DOWN POSITION. AFTER COMPANY WAS CALLED AND ADVISED OF THE SIT
- [SDR 2023F00092](https://openairdocs.org/sdr/2023F00092.md): Line · blew out · Mar 9, 2023 · N55LP · Cessna 402C · Main Landing Gear
  > LINE ASSY GEAR RETRACTION HOSE PN 58 0108-1 HAD ITS FLAIR SPLIT UPON INITIAL GEAR RETRACTION ALLOWING THE DEPLETION OF ALL HYDRAULIC FLUID. AIRCRAFT EMERGENCY PROCEDURE WAS USED TO BLOW DOWN THE GEAR AND RETURN FOR REPAIRS.
- [SDR HYIA20210823001](https://openairdocs.org/sdr/HYIA20210823001.md): Engine · making metal · Aug 19, 2021 · N6879R · Cessna 402C · Engine (Reciprocating)
  > THE PILOT REPORTED THE LEFT ENGINE HAD A LOSS OF POWER IN AND THE OIL PRESSURE FELL TO ZERO. MAINTENANCE INSPECTED AND FOUND METAL PARTICLES IN THE OIL FILTER. AN ENGINE HAS BEEN ORDERED TO REPLACE THIS ENGINE. FURTHER DETAILS ARE TO BE PROVIDED UPON ENGINE
- [SDR HYIA20210611001](https://openairdocs.org/sdr/HYIA20210611001.md): Spring · broken · Jun 6, 2021 · N4630N · Cessna 402C · Landing Gear Retraction/Extension System
  > DURING APPROACH THE NOSE LANDING GEAR WOULD NOT EXTEND. AIRCRAFT LANDED WITH NOSE GEAR RETRACTED. NO INJURIES. INSPECTION FOUND THE NOSE GEAR DOOR RETURN SPRING TO BE BROKEN, WHICH CAUSED THE NOSE GEAR DOOR RETRACT BELLCRANK TO BECOME OUT POSITION JAMMING THE
- [SDR HYIA20210611002](https://openairdocs.org/sdr/HYIA20210611002.md): Line · cracked · May 28, 2021 · N494BC · Cessna 402C · Hydraulic System, Main
  > NOSE GEAR LIGHT DID NOT ILLUMINATE ON EXTENSION, AIRCRAFT LANDED WITH GEAR UNLOCKED, GEAR COLLAPSED ON LANDING. NO INJURIES. INSPECTED AIRCRAFT AND FOUND HYDRAULIC PRESSURE LINE IN RIGHT WING CRACKED AND BLOWDOWN BOTTLE DID NOT DISCHARGE.
- [SDR HYIA20210525002](https://openairdocs.org/sdr/HYIA20210525002.md): Cylinder · damaged · May 20, 2021 · N68391 · Cessna 402C · Reciprocating Engine Cylinder Section
  > THE PILOT REPORTED ENGINE SURGING AND MANIFOLD PRESSURE DROP IN FLIGHT, AND THEN SHUT DOWN ENGINE IN-FLIGHT ACCORDING TO THE QRH. DURING THE INITIAL INSPECTION, FOUND SHINY PARTICLES IN THE OIL FILTER, AND SPARK PLUG DAMAGED, AND PARTICLES IN THE PROPELLER GO
- [SDR HYIA202009109001](https://openairdocs.org/sdr/HYIA202009109001.md): Engine · damaged · Sep 6, 2020 · N18VV · Cessna 402C · Engine (Turbine/Turboprop)
  > PILOT REPORTED A SIGNIFICANT DROP IN OIL PRESSURE DURING FLIGHT, AND AFTER LANDING, OIL LEAKING FROM RIGHT ENGINE. MAINTENANCE INSPECTED AND FOUND METAL PARTICLES IN THE OIL FILTER AND PROPELLER GOVERNOR SCREEN AND IS CHANGING THE RIGHT ENGINE, PROPELLER, VAP
- [SDR HYIA2020090131001](https://openairdocs.org/sdr/HYIA2020090131001.md): Cylinder · damaged · Aug 28, 2020 · N68752 · Cessna 402C · Reciprocating Engine Cylinder Section
  > PILOT REPORTED MAGNETO ROUGH IN FLIGHT. MAINTENANCE INSPECTED AND FOUND OIL IN THE #5 CYLINDER. UPON REMOVAL OF THE CYLINDER IT WAS FOUND TO HAVE MISSING MATERIAL AT THE VALVE INTAKE GUIDE. THE #5 CYLINDER WAS REPLACED WITH NO FURTHER DEFECTS NOTED
- [SDR HYIA20200521001](https://openairdocs.org/sdr/HYIA20200521001.md): Adapter · broken · May 20, 2020 · N6875D · Cessna 402C · Reciprocating Engine Oil System
  > DURING INITIAL CLIMB APPROXIMATELY 3 MINUTES AFTER TAKEOFF THE CREW REPORTED A LT YAW MOVEMENT AND RECOGNIZED LT ENGINE MAP INDICATION DROPPING FOLLOWED BY A RAPIDLY DECREASING LT ENGINE OIL PRESSURE INDICATION. THE CREW ALSO REPORTED WHITE SMOKE STREAMING FR
- [SDR HYIA202005221004](https://openairdocs.org/sdr/HYIA202005221004.md): Cylinder · failed · May 7, 2020 · N751CA · Cessna 402C · Reciprocating Engine Cylinder Section
  > PILOT REPORTED A STRONG VIBRATION IN FLIGHT. MAINTENANCE INSPECTED AND FOUND THE LEFT ENGINE #1 CYLINDER TO HAVE LOW COMPRESSION AND THE #3 AND #4 CYLINDERS TO HAVE DAMAGE AT THE ROTOCOIL. ALL THREE CYLINDERS WERE REPLACED WITH NO FURTHER DEFECTS NOTED.
- [SDR HYIA202005222004](https://openairdocs.org/sdr/HYIA202005222004.md): Cylinder · damaged · May 7, 2020 · N751CA · Cessna 402C · Reciprocating Engine Cylinder Section
  > PILOT REPORTED A STRONG VIBRATION IN FLIGHT. MAINTENANCE INSPECTED AND FOUND THE LEFT ENGINE #1 CYLINDER TO HAVE LOW COMPRESSION AND THE #3 AND #4 CYLINDERS TO HAVE DAMAGE AT THE ROTOCOIL. ALL THREE CYLINDERS WERE REPLACED WITH NO FURTHER DEFECTS NOTED.
- [SDR HYIA202005223004](https://openairdocs.org/sdr/HYIA202005223004.md): Cylinder · damaged · May 7, 2020 · N751CA · Cessna 402C · Reciprocating Engine Cylinder Section
  > PILOT REPORTED A STRONG VIBRATION IN FLIGHT. MAINTENANCE INSPECTED AND FOUND THE LEFT ENGINE #1 CYLINDER TO HAVE LOW COMPRESSION AND THE #3 AND #4 CYLINDERS TO HAVE DAMAGE AT THE ROTOCOIL. ALL THREE CYLINDERS WERE REPLACED WITH NO FURTHER DEFECTS NOTED.
- [SDR HYIA20200508001](https://openairdocs.org/sdr/HYIA20200508001.md): Connecting Rod · damaged · May 6, 2020 · N514NC · Cessna 402C · Reciprocating Engine Cylinder Section
  > DURING ROUTINE INSPECTION AND REPLACEMENT OF THE RIGHT ENGINE CYLINDER #3 IT WAS DISCOVERED THAT THE CONNECTING ROD BUSHING OF THE #3 CYLINDER WAS FOUND TO BE DAMAGED AND LOOSE. THE CONNECTING ROD AND CYLINDER WILL BE REPLACED.
- [SDR HYIA20200521002](https://openairdocs.org/sdr/HYIA20200521002.md): Cylinder · low pressure · May 6, 2020 · N120PC · Cessna 402C · Reciprocating Engine Cylinder Section
  > PILOT REPORTED ROUGH RUNNING ENGINE. MAINTENANCE INSPECTED AND FOUND RIGHT #5 CYLINDER NO COMPRESSION. REMOVED AND REPLACED ENGINE WITH NO FURTHER DEFECT NOTED, AS WAS SCHEDULED FOR REMOVAL WITHIN 87 HOURS.
- [SDR HYIA20200422001](https://openairdocs.org/sdr/HYIA20200422001.md): Bushing · migrated · Apr 21, 2020 · N2611X · Cessna 402C · Reciprocating Engine Power Section
  > DURING ROUTINE INSPECTION AND REPLACEMENT OF THE RIGHT ENGINE CYLINDER #6 IT WAS DISCOVERED THAT THE CONNECTING ROD BUSHING OF THE #6 CYLINDER WAS FOUND TO BE LOOSE AND MIGRATING. THE CONNECTING ROD AND CYLINDER WILL BE REPLACED.
- [SDR HYIA202002270001](https://openairdocs.org/sdr/HYIA202002270001.md): Cylinder · low pressure · Feb 23, 2020 · N7037E · Cessna 402C · Reciprocating Engine Cylinder Section
  > PILOT REPORTED RIGHT ENGINE MAP FLUCTUATED IN FLIGHT. MAINTENANCE INSPECTED AND FOUND TURBOCHARGER IMPELLER HARD TO MOVE AS WELL AS LOW COMPRESSION ON THE NUMBER 4 & 6 CYLINDERS. TURBO AND CYLINDERS WERE REPLACED AND THE AIRCRAFT WAS RELEASED TO SERVICE.
- [SDR HYIA20200227001](https://openairdocs.org/sdr/HYIA20200227001.md): Cylinder · low pressure · Feb 23, 2020 · N7037E · Cessna 402C · Reciprocating Engine Cylinder Section
  > PILOT REPORTED RIGHT ENGINE MAP FLUCTUATED IN FLIGHT. MAINTENANCE INSPECTED AND FOUND TURBOCHARGER IMPELLER HARD TO MOVE AS WELL AS LOW COMPRESSION ON THE NUMBER 4 & 6 CYLINDERS. TURBO AND CYLINDERS WERE REPLACED AND THE AIRCRAFT WAS RELEASED TO SERVICE.
- [SDR HYIA2020022700002](https://openairdocs.org/sdr/HYIA2020022700002.md): Cylinder · low pressure · Feb 22, 2020 · N247GS · Cessna 402C · Reciprocating Engine Cylinder Section
  > PILOT REPORTED ROUGH RUNNING RIGHT ENGINE ON CLIMB OUT. MAINTENANCE INSPECTED AND FOUND THE NUMBER 6 CYLINDER EXHAUST VALVE TO BE BROKEN AND THE NUMBER 4 CYLINDER DAMAGED. REPLACED BOTH CYLINDERS AND RELEASED TO SERVICE.
- [SDR HYIA20200227002](https://openairdocs.org/sdr/HYIA20200227002.md): Cylinder · broken · Feb 22, 2020 · N247GS · Cessna 402C · Reciprocating Engine Cylinder Section
  > PILOT REPORTED ROUGH RUNNING RIGHT ENGINE ON CLIMB OUT. MAINTENANCE INSPECTED AND FOUND THE NUMBER 6 CYLINDER EXHAUST VALVE TO BE BROKEN AND THE NUMBER 4 CYLINDER DAMAGED. REPLACED BOTH CYLINDERS AND RELEASED TO SERVICE.
- [SDR HYIA20200115001](https://openairdocs.org/sdr/HYIA20200115001.md): Unknown · malfunctioned · Jan 9, 2020 · N2748Y · Cessna 402C · Nose/Tail Landing Gear
  > BOTH PROPELLERS CONTACTED RUNWAY DURING TOUCH & GO TRAINING MANEUVER. SUSPECT NOSE LANDING GEAR ACTUATOR TO BE AT FAULT. NO DAMAGE TO AIRCRAFT, BOTH ENGINES AND PROPELLERS WILL BE REPLACED. FURTHER DETAILS TO BE PROVIDED UPON RECEIPT OF TEARDOWN REPORT FOR NOS
- [SDR HYIA20191112002](https://openairdocs.org/sdr/HYIA20191112002.md): Crankcase · failed · Nov 12, 2019 · N57PB · Cessna 402C · Reciprocating Engine Power Section
  > PILOT REPORTED STEADILY DECREASING OIL PRESSURE AT LT ENGINE. CREW INTENTIONALLY CAGED LT ENGINE WHEN ‘MECHANICAL’ NOISES WERE HEARD AND SAFELY LANDED. INITIAL INSPECTION FOUND MULTIPLE CRANKCASE BREACHES AND INDICATIONS OF POSSIBLE OIL STARVATION. ADDITIONAL
- [SDR HYIA20190920002](https://openairdocs.org/sdr/HYIA20190920002.md): Cylinder · damaged · Sep 19, 2019 · N751CA · Cessna 402C · Reciprocating Engine Cylinder Section
  > PILOT REPORTED RIGHT ENGINE MANIFOLD PRESSURE DROPPED TO 20". AFTER FULL POWER WAS APPLIED THE RIGHT ENGINE STARTED TO SURGE. MAINTENANCE INSPECTED AND FOUND DAMAGE AND DEBRIS IN THE 1,3 & 5 CYLINDERS, FURTHER INVESTIGATION SHOWED METAL SHAVINGS IN THE OIL SUM
- [SDR HYIA20190524001](https://openairdocs.org/sdr/HYIA20190524001.md): Bearing · cracked · May 17, 2019 · N26514 · Cessna 402C · Reciprocating Engine Cylinder Section
  > PILOT REPORTED LEFT PROPELLER VIBRATES ABOVE 2500 RPM. MAINTENANCE INSPECTED AND FOUND THE LEFT ENGINE #1 CYLINDER EXHAUST VALVE ERODED AND RECESSED INTO CYLINDER HEAD, AND #4 THE CYLINDER TO HAVE LOW COMPRESSION AND THE #4 CONNECTING ROD BEARING TO HAVE A CRA
- [SDR HYIA20190515002](https://openairdocs.org/sdr/HYIA20190515002.md): Cylinder · failed · May 12, 2019 · N68752 · Cessna 402C · Reciprocating Engine Cylinder Section
  > PILOT REPORTED A ROUGH ENGINE; "MISSING" WHEN PROPS BROUGHT BACK FOR CRUISE AND STRONG VIBRATIONS ON FINAL APPROACH. MAINTENANCE INSPECTED AND FOUND THE LEFT ENGINE NR 4 CYLINDER EXHAUST VALVE GUIDE TO HAVE PLAY, THE EXHAUST VALVE CHIPPED, AND THE EXHAUST VALV
- [SDR HYIA20190515003](https://openairdocs.org/sdr/HYIA20190515003.md): Governor · failed · May 8, 2019 · N2651S · Cessna 402C · Propeller Governor
  > PILOT REPORTED RIGHT PROP WENT ALL THE WAY TO THE DETENTE AT CLIMB POWER BUT NEVER CAME BELOW 2700 RPM. MAINTENANCE INSPECTED AND FOUND THE RIGHT PROP GOVERNOR UNABLE TO REGULATE HIGH SPEED RPM. REPLACED PROP GOVERNOR WITH NO FURTHER DEFECTS.
- [SDR HYIA20190426001](https://openairdocs.org/sdr/HYIA20190426001.md): Exhaust Valve · damaged · Apr 23, 2019 · N6879R · Cessna 402C · Reciprocating Engine Cylinder Section
  > DURING INSPECTION THE #4 CYLINDER OF THE LEFT ENGINE WAS FOUND TO HAVE LOW COMPRESSION. UPON FURTHER INSPECTION THE EXHAUST VALVE HAD FOUR SMALL CHIPS IN THE EDGE OF THE VALVE, AND THE EXHAUST VALVE SPRING HAD PIECES THAT HAD COME APART. NO DAMAGE TO THE ROCK
- [SDR HYIA20190410002](https://openairdocs.org/sdr/HYIA20190410002.md): Engine · making metal · Mar 22, 2019 · N2651S · Cessna 402C · Engine (Reciprocating)
  > PILOT REPORTED RIGHT MANIFOLD PRESSURE DROPPED TO 25 INCHES AND RIGHT OIL PRESSURE TO JUST ABOVE RED LINE. MAINTENANCE INSPECTED AND FOUND METAL PARTICLES IN THE OIL FILTER. THE ENGINE WAS REPLACED WITH NO FURTHER DEFECTS NOTED. FURTHER DETAILS TO BE PROVIDED
- [SDR HYIA20190410001](https://openairdocs.org/sdr/HYIA20190410001.md): Cylinder · failed · Mar 11, 2019 · N991AA · Cessna 402C · Reciprocating Engine Cylinder Section
  > PILOT REPORTED RIGHT ENGINE SURGING AFTER TAKEOFF. MAINTENANCE INSPECTED AND FOUND THE #3 CYLINDER TO BE AT FAULT. THE #3 CYLINDER WAS REPLACED WITH NO FURTHER DEFECTS NOTED.
- [SDR HYIA20190315006](https://openairdocs.org/sdr/HYIA20190315006.md): Cylinder · damaged · Mar 7, 2019 · N402VN · Cessna 402C · Reciprocating Engine Cylinder Section
  > PILOT REPORTED RIGHT ENGINE SURGES, SHUTTERS AND VIBRATES ON ALL POWER SETTINGS. MAINTENANCE INSPECTED AND FOUND CYLINDER NR 4 WEAR IN EXHAUST VALVE KEEPER AREA, AS WELL AS INTAKE AND EXHAUST LIFTERS NOT WORKING PROPERLY. REMOVED AND REPLACED CYLINDER #4 AS WE
- [SDR HYIA20190315002](https://openairdocs.org/sdr/HYIA20190315002.md): Cylinder · leaking · Mar 4, 2019 · N6879R · Cessna 402C · Reciprocating Engine Cylinder Section
  > PILOT REPORTED SHAKING FELT IN AIRFRAME DURING CLIMB/CRUISE WITH NO ABNORMAL ENGINE INDICATIONS ON INSTRUMENTATION. MAINTENANCE INSPECTED AND FOUND THE RIGHT ENGINE #6 CYLINDER TO HAVE LOW COMPRESSION. THE CYLINDER WAS REPLACED ALONG WITH THE RIGHT MAGNETO AN
- [SDR HYIA20190315004](https://openairdocs.org/sdr/HYIA20190315004.md): Exhaust Valve · broken · Feb 26, 2019 · N3249M · Cessna 402C · Reciprocating Engine Cylinder Section
  > PILOT REPORTED RIGHT ENGINE RUNNING ROUGH IN FLIGHT WITH ONE INCH MAP FLUCTUATION INTERMITTENT. MAINTENANCE INSPECTED AND FOUND THE EXHAUST VALVE DISCOLORED AND BROKEN. THE CYLINDER WAS REPLACED WITH NO FURTHER DEFECTS NOTED.
- [SDR HYIA20190315007](https://openairdocs.org/sdr/HYIA20190315007.md): Lifter · collapsed · Feb 26, 2019 · N385CA · Cessna 402C · Reciprocating Engine Cylinder Section
  > PILOT REPORTED ENGINE RUNS ROUGH IN CLIMB. MAINTENANCE INSPECTED AND FOUND LOW COMPRESSION ON THE NR 2 & NR 3 CYLINDERS OF THE RIGHT ENGINE, COLLAPSED LIFTERS ON THE NR 5 & NR 6 CYLINDERS, AS WELL AS A CRACKED BEARING ON THE NR 3 CYLINDER CONNECTING ROD. BOTH
- [SDR HYIA20190208001](https://openairdocs.org/sdr/HYIA20190208001.md): Cylinder · leaking · Feb 3, 2019 · N6879R · Cessna 402C · Reciprocating Engine Cylinder Section
  > PILOT REPORTED A SHAKING FELT IN AIRFRAME DURING CLIMB AND CRUISE. MAINTENANCE INSPECTED AND FOUND THE #6 CYLINDER OF THE LEFT ENGINE TO HAVE LOW COMPRESSION. THE LEFT ENGINE RIGHT MAGNETO WAS FOUND TO HAVE INTERNAL OIL AND THE #1 CYLINDER IGNITION CABLE WAS F
- [SDR HYIA20190115002](https://openairdocs.org/sdr/HYIA20190115002.md): Engine · failed · Jan 12, 2019 · N88833 · Cessna 402C · Engine (Reciprocating)
  > PILOT REPORTED ENGINE SHUDDERED IN FLIGHT AND THEN STOPPED SHORTLY AFTER. THE AIRCRAFT LANDED WITHOUT INCIDENT. INITIAL INSPECTION REVEALED AN ENGINE CASE PENETRATION AT THE TOP REAR OF THE CASE AT THE NR 1 CYLINDER IN THE AREA UNDER LEFT MAGNETO, AND THE MAGN
- [SDR HYIA20190107001](https://openairdocs.org/sdr/HYIA20190107001.md): Intake Valve · damaged · Jan 5, 2019 · N763EA · Cessna 402C · Reciprocating Engine Cylinder Section
  > PILOT REPORTED RIGHT ENGINE SHUDDERED, THEN STARTED RUNNING ROUGH IN FLIGHT. PRELIMINARY INSPECTION FOUND DAMAGE TO THE NR 1 INTAKE VALVE, DAMAGE TO THE NR 1 AND NR 5 PISTON HEADS AND THE NR 5 CYLINDER INTAKE LIFTER SLEEVE EXTRUDING FROM LIFTER TUBE IN CRANK C
- [SDR HYIA20180102001](https://openairdocs.org/sdr/HYIA20180102001.md): Mount Bolt · missing · Dec 30, 2018 · N6879R · Cessna 402C · Engine Starter
  > PILOT REPORTED OIL LEAK IN FLIGHT AND OIL PRESSURE DECREASING ON THE RIGHT ENGINE. UPON INSPECTION MAINTENANCE DISCOVERED ONE STARTER MOUNT BOLT NUT MISSING. STARTER HAD BEEN REMOVED FOR OTHER MAINTENANCE 99.5 HOURS PRIOR. AIRCRAFT HAD GONE THROUGH ROUTINE INS
- [SDR HYIA20181218002](https://openairdocs.org/sdr/HYIA20181218002.md): Cable Assy · failed · Dec 14, 2018 · N740CA · Cessna 402C · Power Lever
  > PILOT REPORTED RIGHT ENGINE THROTTLE STUCK AT 35 INCHES MAP. THE ENGINE WAS SHUT DOWN AND THE AIRCRAFT RETURNED TO THE FIELD WITHOUT INCIDENT. INSPECTION FOUND THE RIGHT THROTTLE CABLE PROPERLY ATTACHED AT BOTH ENDS, AND THE CABLE FAILED INTERNALLY. THE CABLE
- [SDR HYIA20181130001](https://openairdocs.org/sdr/HYIA20181130001.md): Crankshaft · fractured · Nov 28, 2018 · N36911 · Cessna 402C · Reciprocating Engine Power Section
  > PILOT REPORTED DURING CLIMB/CRUISE FLIGHT THE RIGHT HYDRAULIC FLOW LIGHT CAME ON AND RIGHT ENGINE LOST POWER. UPON INITIAL INSPECTION, THE ENGINE WAS FOUND TO BE SEIZED. PISTONS AT CYLINDERS 1-4 WERE FOUND TO BE IN THE TOP DEAD CENTER POSITION. CYLINDER #3 W
- [SDR HYIA20181023003](https://openairdocs.org/sdr/HYIA20181023003.md): Cylinder · damaged · Oct 22, 2018 · N677CA · Cessna 402C · Reciprocating Engine Cylinder Section
  > PILOT REPORTED THE LEFT ENGINE BEGAN TO VIBRATE, THEN OIL PRESSURE BEGAN TO DROP AND CONTINUED DROPPING INTO THE RED. INITIAL INSPECTION FOUND MULTIPLE POINTS OF ENGINE CASE PENETRATION. THE NUMBER 6 CYLINDER SHOWED SIGNS OF DETONATION WITH DEBRIS IN THE LOWER
- [SDR HYIA20181024002](https://openairdocs.org/sdr/HYIA20181024002.md): Bearing · damaged · Oct 22, 2018 · N706CA · Cessna 402C · Reciprocating Engine Oil System
  > PILOT REPORTED RIGHT ENGINE LOW OIL PRESSURE ON GROUND RUN-UP. INITIAL INSPECTION FOUND THE STARTER ADAPTER NEEDLE BEARING DAMAGED. THE ENGINE IS BEING REPLACED. FURTHER DETAILS CAN BE PROVIDED UPON TEAR-DOWN INSPECTION.
- [SDR HYIA20181009001](https://openairdocs.org/sdr/HYIA20181009001.md): Engine · failed · Oct 8, 2018 · N18VV · Cessna 402C · Engine (Reciprocating)
  > PILOT REPORTED LEFT ENGINE STARTED VIBRATING IN FLIGHT, WHEN MANIFOLD PRESSURE WENT TO AMBIENT. THE ENGINE WAS SHUT DOWN IN FLIGHT AND WOULD NOT RESTART. UPON INITIAL INSPECTION THE CRANK CASE WAS FOUND TO BE PENETRATED AT THE REAR OF THE ENGINE IN THE VICINIT
- [SDR HYIA20180928001](https://openairdocs.org/sdr/HYIA20180928001.md): Pushrod · broken · Sep 25, 2018 · N68752 · Cessna 402C · Reciprocating Engine Power Section
  > PILOT REPORTED THE LEFT ENGINE RUNNING ROUGH IN FLIGHT AND OIL PRESSURE WENT TO ZERO PSI. PRELIMINARY INSPECTION FOUND METAL CONTAMINATION IN OIL FILTER, #4 CYLINDER INTAKE PUSH ROD BROKEN AND A LARGE GAP AT THE EXHAUST ROCKER ARM. THE ENGINE IS BEING REPLACED
- [SDR HYIA20180926001](https://openairdocs.org/sdr/HYIA20180926001.md): Engine · making metal · Sep 24, 2018 · N514NC · Cessna 402C · Engine (Reciprocating)
  > PILOT REPORTED RIGHT ENGINE OIL PRESSURE DROPPED TO 20 PSI IN FLIGHT AND TO ZERO PSI AT IDLE ON THE GROUND. MAINTENANCE INSPECTED AND FOUND METAL PARTICLES AT THE OIL PRESSURE RELIEF VALVE, FURTHER INSPECTION FOUND THE STARTER ADAPTER NEEDLE BEARING DAMAGED. T
- [SDR HYIA20180831001](https://openairdocs.org/sdr/HYIA20180831001.md): Oil System · low pressure · Aug 24, 2018 · N256CA · Cessna 402C · Engine (Reciprocating)
  > PILOT REPORTED IN CRUISE, BOTH ENGINES LOST OIL PRESSURE AND STARTED TO RUN ROUGH. NO LEAKS WERE NOTED, BUT LOW OIL LEVELS WERE NOTED ON BOTH SIDES OIL DIPSTICKS. ENGINES ARE BEING REPLACED.

Next page: https://openairdocs.org/engine/continental-tsio-520-vb/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 = 'TSIO520VB'
ORDER BY difficulty_date DESC
```

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

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