SDR 98ZZZX3254

Service difficulty report · Crankshaft · Gulstm 500A

Difficulty date: August 14, 1998
Submitted: March 26, 2000
Operation: General aviation
Aircraft: N444G
Make and model: Gulstm 500A
Aircraft serial: 124974
Engine: Cont IO520F
System (JASC): 8520 · Reciprocating Engine Power Section
Part: Crankshaft
Part number: 631716
Condition: Broken
Location: Rt Engine
Part time: 3,413 hours
Stage of operation: CR
Nature of condition: Y
Precautionary procedure: A

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

What was found

WHILE CRUSING AT 5,000 FEET, 2,300 RPM, 23 INCH MP, 62 PERCENT POWER, ENGINE SHUDDERED AND LOCKED UP. PROPELLER WAS FEATHERED AND A NORMAL LANDING MADE. ENGINE TEAR DOWN REVEALED THAT THE VAR CRANKSHAFT FAILED AT THE FORWARD CHEEK OF NR 2 ROD.