SDR SWAA2020050141149

Service difficulty report · Channel · Boeing 7377H4

Difficulty date: April 10, 2020
Submitted: May 1, 2020
Operation: Air carrier
Aircraft: N475WN
Make and model: Boeing 7377H4
Aircraft serial: 32474
Aircraft time: 54,947 hours, 32,366 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Channel
Condition: Corroded
Location: Fuselage
Stage of operation: IN
How discovered: V
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 RH Z CHANNEL RBL 21 FROM STA 727 TO STA 767;WL 153.8 / REMOVED CORROSION ON R/H 'Z' CHANNEL FROM STA 727 TO STA 767 WL 153.8 FOUND EXFOLIATOR CORROSION OUT OF LIMITS IAW B737 SRM 51-10-00-0G-0 AND SRM 53-00-1A-2; FABRICATED; LOCATED AND DRILLED NEW 'Z' CHANNEL IAW B737-700 SRM 51-40-05-0G-0; TREATED AND PRIMED AND INSTALLED NEW Z CHANNEL AT AFT CARGO COMP; R/H BETWEEN STA 727 TO STA 767 WL 153.8

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