Service difficulty report · Channel · Boeing 7377H4

Difficulty date
May 4, 2023
Submitted
June 12, 2023
Operation
Air carrier
Aircraft
N222WN
Make and model
Boeing 7377H4
Aircraft serial
34290
Aircraft time
58,122 hours, 34,829 cycles
Part
Channel
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...L/H AFT CARGO COMPARTMENT BILGE @ STA 727 - STA 747 STR25L WL 156.4 Z CHANNEL HAS CORROSION. (18-030)<[01] INSTALLED NEW ZEE CHANNEL ON AFT CARGO FROM STA. 727 TO STA. 847; PER REF SRM 51-40-02-0G-0 AND DRAWING # 146A7500;[02] REMOVED CORROSION AT L/H AFT CARGO COMPARTMENT BILGE STA 727-747 STR 25L WL 156.4 Z CHANNEL PER REF SRM 51-10-02-0G-0 FOUND ZCHANNEL OUT OF LIMITS PER REF SRM 53-00-53-1A-2 REMOVED AND REPLACED Z CHANNEL PER REF SRM51-40-02-0G-0 AND DRAWING 146A7500;[03] VERIFIED AND INSPECTED CORROSION REMOVED AT L/H AFT CARGO COMPARTMENT BILGE @ STA 727 - STA 747 STR25L WL 156.4 Z CHANNEL

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