Service difficulty report · Floorbeam · Boeing 7272Q9

Difficulty date
April 28, 2005
Submitted
June 6, 2005
Operation
Air carrier
Aircraft
N741DH
Make and model
Boeing 7272Q9
Aircraft serial
21931
Aircraft time
46,665 hours, 37,160 cycles
Part
Floorbeam
Part number
150529222
Condition
Corroded
Location
Fuselage
Part time
46,665 hours, 37,160 cycles
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

COCKPIT FLOORBEAM HAS LIGHT SURFACE CORROSION AT BS 290 BL0. REMOVED CORROSION AT BS294 BL0 DAMAGED SPREAD FROM LBL24 AND RBL24 MAT, LOSS IS MORE THAN 40 PERCENT AND IS OUT IS OUT OF THE ALLOWABLE LIMITS OF 10 PERCENT CROSS SECTION IAW B727 SRM 53-10-1 FIG 1. REMOVED T ANGLE CUT OUT DAMAGED SECTION AT BS 294 FROM LBL 15 - RBL15 IAW 727 SRM 53-10-8 FIG 1 LOCATED AND DRILLED NEW PART FROM LBL15-RBL15 IAW B727 SRM 53-10-8 FIG 1. TREATED AND PRIMED T ANGLE AND AREA IAW B727 SRM 53-10-2. INSTALLED T SECTION IAW B727 SRM 53-10-8 FIG 1.

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