Service difficulty report · Rib · Piper PA28R200

Difficulty date
November 16, 2017
Submitted
June 11, 2018
Operation
General aviation
Aircraft
N76SA
Make and model
Piper PA28R200
Aircraft serial
28R7635110
Aircraft time
9,264 hours
Part
Rib
Part number
95639002
Condition
Cracked
Location
Rt Wing
Part time
9,264 hours
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

WHILE INVESTIGATING THE CAUSE OF A BROKEN PITOT LINE WHERE THE WING MEETS THE FUSELAGE, EXCESSIVE MOVEMENT WAS NOTICED BETWEEN THE WING AND FUSELAGE. WHEN THE WING WAS REMOVED IT WAS DISCOVERED THAT THE FORWARD WING RIB P/N 95639-002 HAD CRACKED COMPLETELY AROUND THE FORWARD WING ATTACH POINT. FURTHER INVESTIGATION REVEALED THE AFT WING ATTACH POINT BOLT HOLE, AND MAIN SPAR BOLT HOLES HAD BEEN ELONGATED DUE TO THE ADDITION STRESS AND MOVEMENT.

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