Service difficulty report · Keelbeam · Boeing 75721B

Difficulty date
June 14, 2009
Submitted
June 15, 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
144N818057
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

LT KEELBEAM HAS CORROSION FROM STA 1100 TO STA 1120, LBL 8. KEELBEAMHAS NINE CORRODED NUT PLATES. EVALUATE AND RECTIFY. CORRODED LT KEELBEAM AT STA 1100 TO STA 1120, LBL 8 FOUND EXCEEDED. ALLOWABLE DAMAGE LIMITS. KEEL BEAM CHORD REMOVED AND REPLACED IAW DWG 144N8180 AND SRM 51-40-02 REV. 96. REPAIR IS CLASSIFIED AS MINOR IAW GMM 6-2-100 CRITERIA.

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