Service difficulty report · Channel · Boeing 73776N

Difficulty date
November 15, 2023
Submitted
December 15, 2023
Operation
Air carrier
Aircraft
N7722B
Make and model
Boeing 73776N
Aircraft serial
32668
Aircraft time
55,418 hours, 28,473 cycles
Part
Channel
Part number
UNKNOWN
Condition
Corroded
Location
Zn 100 Fus Lower
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 FOUND AFT CARGO LH 'Z' CHANNEL FROM STA 727B TO STA 727C LBL 21 WL 155.5 HAS SPOT OF CORROSION.<[01] REF TASK CARD TTG8Q00PNSVZ FOR REPLACEMENT OF ZEE CHANNEL;[02] INSPECTION VERIFIED ENTRY 1 AS REPLACEMENT OF Z-CHANNEL SECTION WAS FOUND WITH TO MANY AREAS ' OUT OF LIMITS ' AND WILL BE INSTALLED WITH NEW Z-CHANNEL ON TTG8Q00PNSVZ.

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