Service difficulty report · Rib · Beech A36

Difficulty date
May 17, 2010
Submitted
June 18, 2010
Operation
General aviation
Aircraft
N1886W
Make and model
Beech A36
Aircraft serial
E441
Engine
Cont IO520BA
Part
Rib
Part number
3516505084
Condition
Cracked
Location
Rt Wing
Part time
5,389 hours
Component
Rt Flap
Component part number
3516505079
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

((OF1R)) DURING AN ANNUAL INSP, 1 RT FLAP NOSE RIB WAS FOUND CRACKED. IT IS THE RIB LOCATED DIRECTLY BENEATH THE ACTUATOR ATTACH BRACKET. IT WAS CRACKED IN THE RELIEF CUTOUT FOR THE FLANGES AND THROUGH THE MOST FWD NUTPLATE RIVET HOLES. VERY INACCESSABLE AREA TO INSPECT. YOU MUST BE LOOKING AT THIS RIB WITH THE FLANGES FACING YU TO DETECT CRACKS UNTIL THEY BECOME VERY LARGE. RECOMMEND MAKING AN ADDITIONAL ACCESS HOLE OR USING A BOROSCOPE FOR THIS INSPECTION.

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