Service difficulty report · Channel · Boeing 7377H4

Difficulty date
November 7, 2021
Submitted
December 20, 2021
Operation
Air carrier
Aircraft
N778SW
Make and model
Boeing 7377H4
Aircraft serial
27883
Aircraft time
68,867 hours, 40,745 cycles
Part
Channel
Condition
Corroded
Location
Fuselage
Stage of operation
IN
How discovered
9
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

CORROSION ON L/H FWD CARGO FLOOR, BS 480 - 500D, S25L, WL155.5, Z CHANNEL HAS CORROSION IN SEVERAL AREAS. REMOVED THE ZEE CHANNEL IAW AD CARD 5330-E-16461-NG, TASK CARD TTG8Q004DXN5 STEP 11, LOCATED AND DRILLED THE NEW ZEE CHANNEL IAW SRM 51-40-05-0G-0. TREATED AND APPLIED PRIMER TO THE ZEE CHANNEL IAW SRM 51-20-01-0G-0. ] FOUND ZEE-CHANNEL CORROSION OUT OF LIMITS IAW SRM 53-00-53-1A-2, STEP 4 .A. (2), FIGURE 103, DETAIL D. FABRICATED ZEE-CHANNEL, AND LOCATED IAW SRM 51-40-05-0G-0.

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