SDR CA040329002

Service difficulty report · Rib · Beech A100

Difficulty date: March 18, 2004
Submitted: July 22, 2004
Operation: General aviation
Make and model: Beech A100
Aircraft time: 17,089 hours
Engine: Pwa PT6A28
Propeller: Hartzl HCB3TN3
System (JASC): 5511 · Horizontal Stabilizer, Spar/Rib
Part: Rib
Part number: 115620010325
Condition: Cracked
Location: Horizontal Stab
Part time: 18,824 hours, 20,546 cycles
Component: Horizontal Stab · Beech
Component part number: 1156200104
Stage of operation: IN
How discovered: 9
Nature of condition: O
Precautionary procedure: K

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

What was found

(CAN) ON INSPECTION OF THE HORIZONTAL STABILIZER THE UPPER SKIN WAS FOUND TO BE OIL CANNING. UPON FURTHER INSPECTION IT WAS FOUND THAT 6 RIBS WERE CRACKED INTERNALLY (PN 115-620010-325, 115-620010-210, 115-620010-355, 115-620010-255, 115-620010-215, 115-620010-209). WE BELIEVE THIS DAMAGE WAS FROM PEOPLE WALKING ON THE STABILIZER.

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