SDR A001ABB

Service difficulty report · Pushrod · Cessna 550

Difficulty date
June 18, 2004
Submitted
June 21, 2004
Operation
General aviation
Aircraft
N840MQ
Make and model
Cessna 550
Aircraft serial
427
Aircraft time
4,674 hours
Part
Pushrod
Part number
55653421
Condition
Bent
Location
Rt Elevator
Stage of operation
IN
How discovered
V
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

RIGHT ELEVATOR PUSH ROD WAS INITIALLY REMOVED FROM THE AIRCRAFT WHEN IT WAS DISCOVERED DURING AN INSPECTION TASK THAT THIS ROD WAS ASSEMBLED USING ALUMINUM RIVETS, SHOULD BE MONEL RIVETS PER THE TASK. UPON REMOVAL, INSPECTION PERSONNEL DISCOVERED THAT THIS ROD WAS BENT. REMOVAL OF LEFT ELEVATOR PUSHROD REVEALED THAT IT TOO WAS BENT - CORRECT RIVETS WERE INSTALLED. BENDS IN THESE RODS WERE NOT READILY APPARENT UNTIL REMOVAL FROM AIRCRAFT. TWO NEW RODS WERE ORDERED FROM CESSNA. ONE ROD ROLLED PERFECTLY STRAIGHT ON A SURFACE PLATE, THE OTHER APPEARED TO BE MIS-MANUFACTURED. THIS ROD WHILE NOT OBVIOUSLY BENT, OSCILLATED WHEN ROLLED ON THE SURFACE PLATE. THE FORMED END WITH A CLEVIS FORK INSTALLED WAS NOT FORM

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