Service difficulty report · Spar · Cessna 177B

Difficulty date
July 19, 2019
Submitted
August 17, 2020
Operation
General aviation
Make and model
Cessna 177B
Aircraft time
3,448 hours
Engine
Lyc O360A1F6D
System (JASC)
5711 · Wing Spar
Part
Spar
Part number
17107038
Condition
Corroded
Location
Wing
Part time
3,463 hours
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) DURING INSPECTION OF LOWER SPAR CARRY THRU FOR CORROSION, SEVERAL (5) SMALL SPOTS OF CORROSION FOUND ON UPPER SURFACE OF THE LOWER FORWARD SPAR FLANGE. SIZE OF CORROSION VARRIED FROM 5 MM TO 10 MM.APPEARS TO BE SURFACE ONLY. TEXTRON CESSNA CONTACTED AND ADVISED. THEY PROVIDED RECOMMENDED PROCEDURE FOR REMOVING CORROSION AND TREATING IF DEPTH IS LESS THAN .005`. THIS WILL BE DETERMINED BY NDT AND REPORTED BACK TO CESSNA. (TC# 20190719009)

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