LYCOMING TIO540 J2BD–ATA 8520 RECIPROCATING ENGINE POWER SECTION–EXHAUST VALVE–WORN. DR 611852684
Exhaust valve guide wear–carbon deposits noted behind rocker cover. Worn exhaust valve guide replaced with new item.
LYCOMING TIO540 J2BD–ATA 8520 RECIPROCATING ENGINE POWER SECTION–EXHAUST VALVE–LEAKING. DR 611852719
Accelerated exhaust valve guide wear identified on RH engine #4 cylinder during scheduled maintenance. Cylinder removed, and valve guide replaced.
LYCOMING O360 J2A–ATA 8520 RECIPROCATING ENGINE POWER SECTION–EXHAUST VALVE–LEAKING. DR 611852728
Pilot reported several occurrences of a violent tail kick/yaw during cruise. Leak check carried out, cylinders #3 & #4 found to have low compression. Both approximately 55/80 PSI. Cylinders removed for inspection.
LYCOMING IO540 K1A5–ATA 7414 MAGNETO/DISTRIBUTOR–MAGNETO–UNSERVICEABLE. DR 611852748
Hard starting was reported when engine was hot. During the course of troubleshooting, both magnetos, harnesses and all spark plugs were renewed. Engine ground run performed, satisfactory.
LYCOMING O320–ATA 7414 MAGNETO/DISTRIBUTOR–MAGNETO–ROUGH RUNNING. DR 611852755
Rough running in flight. R/H magneto dead cut. Magneto removed, inspection detected broken rotor shaft cam. After repairs, magneto refitted.
BOMBARDIER ROTAX 912ULS–ATA 7322 FUEL CONTROL/RECIPROCATING ENGINES–CARBURETTOR–CONTAM-WATER. DR 611852782
Engine was rough running and failed to develop full power or max RPM. Water contamination found in L/H carburettor after inspections. Fuel bowl removed. Serviceable fuel bowl fitted. Ground runs satisfactory.