Service difficulty report · Intercostal · Boeing 75721B

Difficulty date
November 25, 2009
Submitted
November 25, 2009
Operation
Air carrier
Aircraft
N934FD
Make and model
Boeing 75721B
Aircraft serial
24331
Aircraft time
50,153 hours, 32,684 cycles
Part
Intercostal
Part number
146N542512
Condition
Corroded
Location
Zone 100
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

AFT CARGO STA 1320 TO STA 1340, RBL 10 FLOOR SUPPORT PLATE CORRODED. CORROSION REMOVED IAW SRM 51-10-02 REV. 98. EVALUATED AND FOUND EXCEED LIMIT IAW SRM 53-00-04 FIG. 101 REV 98. MATERIAL REMOVED = 0.010", MATERIAL THICKNESS = 0.032", MATERIAL REMAINED = 0.022". INTERCOSTAL FABRICATED IAW DWG 146N5425 SHT 1 REV - AND PL 146N5425 REV F. INTERCOSTAL PART MARKED IAW GMM 7-0-1001. INTERCOSTAL REMOVED AND REPLACED IAW SRM 51-40-02 REV 98. REPAIR IS CLASSIFIED AS MINOR IAW GMM 6-2-100 CRITERIA.

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