Service difficulty report · Bracket · Cessna 177B

Difficulty date
September 8, 2014
Submitted
March 12, 2015
Operation
General aviation
Make and model
Cessna 177B
Aircraft time
3,128 hours
Engine
Lyc O360A1F6D
Propeller
Mcauly B2D34C202
Part
Bracket
Part number
LW13039
Condition
Cracked
Location
Alternator
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) WITH THE ALTERNATOR REMOVED FROM ITS MOUNTING BRACKET FOR CLOSER INSPECTION, IT WAS NOTED THAT THE BRACKET HAD 2 CRACKS, 1 FROM EACH HOLE USED FOR THE SINGLE MOUNTING BOLT. EACH CRACK WENT FROM THE HOLE TO THE CLOSEST EDGE OF THE MATERIAL. ALSO, WHILE THE UNSERVICEABLE BRACKET WAS BEING REMOVED, IT WAS NOTED THAT 1 OF THE ATTACHMENT BOLTS WAS SHEARED DOWN FROM THE BOLT HEAD. THE BOLT REMAINED INTACT ENOUGH TO BE REMOVED. HOWEVER THE BOLT MATERIAL WAS JUST HANGING TOGETHER AS IT HAD NOT SHEARED ALL THE WAY THROUGH YET. THE BRACKET, BOLTS AND BOLT LOCK TAB WERE ALL REMOVED FROM SERVICE TO BE REPLACED WITH NEW ONES.

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