SDR 2009FA0001050

Service difficulty report · Cylinder · Beech J35

Difficulty date: October 18, 2009
Submitted: December 18, 2009
Operation: General aviation
Aircraft: N8312D
Make and model: Beech J35
Aircraft serial: D5412
Engine: Cont IO470C
System (JASC): 8530 · Reciprocating Engine Cylinder Section
Part: Cylinder
Condition: Destroyed
Location: Nr 2
Stage of operation: CR
How discovered: O
Nature of condition: Y, J
Precautionary procedure: A

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

What was found

(2) FLT HRS INTO CRUISE FLT, ENGINE LOST POWER ON NR 2 CYL AS INDICATED ON UBG-16. SHORTLY AFTER, NR 2 CYL JUG BLEW THROUGH THE ENG COWL, SPRAYING OIL OVER WINDSCREEN. ACFT WAS LANDED ON A 2 LANE STATE HWY. CYL REMAINED HANGING ON THE OUTSIDE OF THE ACFT HELD ON BY UBG-16 WIRING AND PLUG WIRES. INVESTIGATION SUSPECTED IMPROPER TORQUED CYL BOLTS DURING OVERHAUL.

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