SDR HYIA20190107001

Service difficulty report · Intake Valve · Cessna 402C

Difficulty date: January 5, 2019
Submitted: January 7, 2019
Operation: Air carrier
Aircraft: N763EA
Make and model: Cessna 402C
Aircraft serial: 402C0497
Aircraft time: 35,413 hours
Engine: Cont TSIO520VB
Engine time: 9,295 hours
System (JASC): 8530 · Reciprocating Engine Cylinder Section
Part: Intake Valve
Condition: Damaged
Location: Rt Engine
Component: Engine · Cont · TSIO520VB
Component part number: TSIO520VB
Stage of operation: DE
How discovered: O
Nature of condition: Z
Precautionary procedure: K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

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 CASE, CONTACTING THE CAM SHAFT. THE ENGINE IS BEING REMOVED FOR FURTHER INVESTIGATION.

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