Service difficulty report · Floorbeam · Boeing 75727B

Difficulty date
November 21, 2018
Submitted
November 23, 2018
Operation
Air carrier
Aircraft
N916FD
Make and model
Boeing 75727B
Aircraft serial
24137
Aircraft time
71,433 hours, 27,177 cycles
Part
Floorbeam
Condition
Corroded
Location
Fuselage
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

MAIN CARGO DECK FLOORBEAM UPPER CHORD CORRODED BS 1040-BS 1080 RBL 26. CORROSION REMOVED IAW SRM 51-10-02 REV 125 AND FOUND TO BE OUT OF LIMITS IAW SRM53-00-51-1A DETAIL III REV 125. NOMINAL THICKNESS OF UPPER CHORD 0.090" MAX ALLOWABLE BLEND=10%=0.009 ACTUAL MAX BLEND DEPTH= 0.024". FLOORBEAM UPPER CHORD REPLACED IAW DWG 144N8017, 111N5201 AND SRM 51-40-02 REV 125 BETWEEN BS1040 TO BS 1080.

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