Service difficulty report · Floorbeam · Boeing 7572B7

Difficulty date
April 25, 2008
Submitted
April 25, 2008
Operation
Air carrier
Aircraft
N906FD
Make and model
Boeing 7572B7
Aircraft serial
27148
Aircraft time
46,574 hours, 19,051 cycles
Part
Floorbeam
Part number
146N5006
Condition
Corroded
Location
Zone 200
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

FLOORBEAM HAS CORROSION BS 1300, RBL 28, BELOW UPPER T-CAP FWD SIDE, AT FLOOR PANEL HOLE. REMOVED CORROSION ON FLOORBEAM IAW SRM 51-00-51. AFTER CORROSION REMOVAL FOUND FLOORBEAM TO BE OUT OF LIMITS IAW SRM 53-00-51, FIG 101, DETAIL 3. REWORK DIMENSIONS ARE AS FOLLOWS: L=1.0", W=2.0", D=.035". FABRICATED REPAIR ANGLES PER MAE TRAVELER NR T8/734293 AND T8/734294. FABRICATED REPAIR STRAPS IAW SRM 53-00-51. FABRICATED REPAIR TEE SECTION IAW SRM 53-00-51. LOCATED AND DRILLED ALL REPAIR PARTS AND TREATED/PRIMED IAW SRM 53-00-51. INSTALLED ALL REPAIR PARTS IAW SRM 53-00-51. THIS REPAIR IS A CATEGORY "A" REPAIR AND MAJOR. NO FOLLOW UP TRACKING IS REQUIRED.

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