Service difficulty report · Support Plate · Boeing 7377H4

Difficulty date
May 17, 2024
Submitted
June 19, 2024
Operation
Air carrier
Aircraft
N477WN
Make and model
Boeing 7377H4
Aircraft serial
33988
Aircraft time
66,413 hours, 39,649 cycles
Part
Support Plate
Part number
UNKNOWN
Condition
Corroded
Location
Bs 500-500c
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 FWD CARGO BAY L/H FLOOR TO SIDEWALL SUPPORT PLATE MULTIPLE AREAS AROUND NUT PLATE HOLES BS500+6' TO BS500C+8' LBL22 WL156<[01] REMOVED DAMAGED SECTION OF FLOOR TO SIDEWALL SUPPORT; FABRICATED; LOCATED AND DRILLED NEW SECTION OF FLOOR TO SIDEWALL SUPPORT (BS480+12'TO BS500D; LBL22; WL156). EXISTENT SPLICE LOCATED ON BS 480+12'; INSTALLED NEW SECTION OF FLOOR TO SIDEWALL SUPPORT IAW SRM 53-00-53-2R-5 AND DWG 143A7500.;[02] VERIFIED CORRECTIVE ACTION 1

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