Service difficulty report · Floorbeam · Boeing 7373G7

Difficulty date
October 9, 2003
Submitted
October 22, 2003
Operation
Air carrier
Aircraft
N156AW
Make and model
Boeing 7373G7
Aircraft serial
23778
Aircraft time
51,832 hours, 36,947 cycles
Engine
Ge CFM56*
Part
Floorbeam
Part number
65C326778
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

MCN - MAJOR REPAIR - DURING C-17 CHECK CORROSION WAS FOUND ON FLOORBEAM AT BS 993, LBL 15 TO LBL 20.70. MAINTENANCE REMOVED CORROSION AND FOUND MATERIAL LOSS TO BE OUT OF LIMITS; REMOVED DAMAGED SECTION OF FLOORBEAM AT BS 993, LBL 15 TO LBL 20.70; FABRICATED A NEW REPLACEMENT SECTION OF FLOORBEAM IAW DWG 65C32677; INSTALLED REPAIR PARTS IAW B737-300 SRM 51-40-02, PARA. 7D2, AND 7D6.

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