Service difficulty report · O-Ring · Beech 58

Difficulty date
November 17, 2003
Submitted
January 7, 2004
Operation
Air carrier
Aircraft
N11HW
Make and model
Beech 58
Aircraft serial
TH271
Engine
Cont IO520*
Part
O-Ring
Condition
Failed
Location
Retract Mech
Stage of operation
NR
How discovered
9
Nature of condition
K
Precautionary procedure
O

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

What was found

INSTALLED RETRACT MECHANISM. AFTER 38 HOURS ALL OIL LEAKED OUT, DETERMINED THERE WAS A BAD O-RING REMOVED FOR WARRANTY REPAIR. REINSTALLED SAME RETRACT MECHANISM. AFTER 44 HOURS, BELLCRANK AND DOWN LIMIT ARM GOT BENT (UNKNOWN HOW THIS HAPPENED), WITH ARM BENT IT WAS NOT CONTACTING THE MICROSWITCH TO INDICATE DOWN AND LOCK ALLOWING THE GEAR MOTOR TO CONTINUE TO RUN, OVER EXTENDING THE DOWN LIMITS ON THE GEARBOX AND DAMAGING IT. (SO05200405787)

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