Service difficulty report · Stiffener · Boeing 75721B

Difficulty date
January 29, 2012
Submitted
January 30, 2012
Operation
Air carrier
Aircraft
N957FD
Make and model
Boeing 75721B
Aircraft serial
24774
Aircraft time
52,597 hours, 31,677 cycles
Part
Stiffener
Part number
144N80602
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

KEEL BEAM STRUCTURE CENTER STIFFENER FOUND CORROSIONS AT BS 989 TO 1006. REPAIRED IAW EA F-5310-157127, PART 1. REPAIR IS CLASSIFIED AS MAJOR.

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