Service difficulty report · Channel · Boeing 7377H4

Difficulty date
June 23, 2022
Submitted
July 29, 2022
Operation
Air carrier
Aircraft
N428WN
Make and model
Boeing 7377H4
Aircraft serial
29844
Aircraft time
66,134 hours, 39,057 cycles
Part
Channel
Condition
Corroded
Location
Aft Cargo
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. SPOTS AFT CARGO BILGE L/H ZEE CHANNEL S-25L FROM STA 727 TO STA 847 / [01] CLEANED CORROSION AT AFT CARGO COMP BILGE L/H Z CHANNEL ABOVE STR 25L FROM STA 727 TO STA 847;FOUND EXFOLIATED CORROSION OUT OF LIMITS AT STA 727 A AND STA 767 AS PER REF B737-700 SRM 53-00-5301A-2.;[02] VERIFIED; STEP # 1;[03] RECIEVED NEW ZEE CHANNEL PN: 146A7502-27 FOR AFT CARGO COMPT.<BR>FROM STA 747 TO STA 847.<BR>DRILLED AND LOCATED NEW ZEE CHANNEL PER REF. B737-700 SRM 51-40-05-0G-0;[04] NEW ZEE CHANNEL SECTION (LT SIDE FROM STA 727 TO STA 847 WILL BE INSTALLED ON TASK TTG8Q004CT6Z.);[05] CORRECTION ON STEP 3 : NEW ZEE SECTION AT LT SIDE IS FROM STA 727 TO STA 847.;[06] VERIFIED ALL STEPS

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