Service difficulty report · Channel · Boeing 7377H4

Difficulty date
June 13, 2023
Submitted
June 27, 2023
Operation
Air carrier
Aircraft
N942WN
Make and model
Boeing 7377H4
Aircraft serial
36648
Aircraft time
45,425 hours, 27,767 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

MODERATE TO FLACKING LEVALS OF CORROSION FOUND ON UNDER SIDE OF LT. SIDE OF Z-CHANNEL SECTION FROM STA 807- STA 847 AT FASTENER HOLE LOCATIONS. ( MRKED ).<[01] REMOVED CORROSION ON L/H Z-CHANNEL FROM STA. 807 - STA. 847 PER REF. SRM 51-10-02-0G-0; AFTER FURTHER EVALUATION FOUND CORROSION BLOWN OUT PER REF SRM 53-00-53-1A-2 FIGURE 103 DETAIL D AND REF TASK CARD TTG8Q00LLK9D FOR L/H Z-CHANNEL REPLACEMENT AT AFT CARGO COMPARTMENT.;[02] VERIFIED FINAL CORRECTIVE ACTION.

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