Service difficulty report · Channel · Boeing 73779P

Difficulty date
August 12, 2021
Submitted
September 20, 2021
Operation
Air carrier
Aircraft
N7832A
Make and model
Boeing 73779P
Aircraft serial
30657
Aircraft time
52,700 hours, 33,462 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 AT FWD CARGO COMPMT. R/H SIDE Z CHANNEL FROM STA 396 TO STA 420 ; / [01] CORRODED Z CHANNEL REMOVAL ACCOMPLISHE ON FAULT: TTG8Q00657BH.; [02] RECEIVED NEW Z CHANNEL MATERIAL BAC/1496-444 P.O:1715975. LOCATED AND DRILLED; REF. SRM. 51-30-05-OG-0-A-07745; [03] VERIFIED STEP 1 AND 2. OK TO TREAT AND PRIME.; [04] TREATED AND PRIMED Z CHANNEL IN REF.AMM:51-21-41-370-802-NG. AND AMM:51-21-72-370-801.RESPECTIVELY.<BR>THE Z CHANNEL INSTALLATION TO BE ACCOMPLISHED ON FAULT #TTG8Q004BYWN. RESPECTABILITY; [05] LATE ENTRY: REMOVED EXFOLIATED CORROSION AT; FWD. CARG. COMP. R/H. Z CHANNEL. AND FOUND TO BE OUT OF LIMITS. ASPER REF. 53-00-53-1A-2. ALLOW DAMAGE;2 FIG; 103. DETAIL; D; [06] VERIFIED STEPS 4 AND 5

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