Service difficulty report · Floorbeam · Boeing 7272B7

Difficulty date
September 28, 2006
Submitted
October 25, 2006
Operation
Air carrier
Aircraft
N770AT
Make and model
Boeing 7272B7
Aircraft serial
21953
Aircraft time
65,520 hours, 38,347 cycles
Engine
Pwa JT8D17A
Part
Floorbeam
Part number
BAC150529222
Condition
Corroded
Location
Bs 294
Part time
65,520 hours, 38,347 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

LOWER LOBE AND WALKWAY BEAM LT SIDE, BS 294, CORROSION ON CHORD. REMOVED, FAB AND REPLACED CORRODED STIFFENER FROM P/N BAC 1505-29222, PO NR 9003865, IAW SRM 51-30-2, 51-30-5, 53-10-2 FIG 1 AND 51-20-1 FIG2. CUT OUT DAMAGED WEB AND FAB DOUBLER FROM 2024-0, .040, PO NR 9003230, APPROX 4 BY 3 IAW SRM 57-40-2 FIG1 AND 53-10-2 FIG 2. HEAT TREATED REPAIR DOUBLER TO T4 CONDITION IAW ENGINEERING REPORT NR 2-37153-801 REV IR. TREATED AND PRIMED DOUBLER PART IAW SRM 51-10-2. INSTALLED REPAIR DOUBLER IAW SRM 51-40-2 FIG1 AND 51-30-2. INSTALLED LOWER WALKWAY WEB IAW SRM 51-30-2.

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