Service difficulty report · Keelbeam · Boeing 75721B

Difficulty date
April 28, 2009
Submitted
April 28, 2009
Operation
Air carrier
Aircraft
N933FD
Make and model
Boeing 75721B
Aircraft serial
24330
Aircraft time
52,447 hours, 30,243 cycles
Part
Keelbeam
Part number
144N8140Y48
Condition
Corroded
Location
Bs 907
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 FITTING HAS CORROSION AT STA 907, RBL 4.0 INCH TO LBL 4.0 INCH FAIRING STRUCTURE. CORROSION ON KEEL BEAM FITTING AT STA 907, RBL 4.0 INCH TO LBL 4.0 INCH FOUND EXCEEDED SRM DAMAGE LIMITS. REMOVED AND REPLACED CHANNEL IAW SRM 51-40-02 REV.96. REPAIR IS CLASSIFIED AS MINOR IAW GMM 6-2-100 CRITERIA.

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