Service difficulty report · Support Plate · Boeing 7378H4

Difficulty date
November 2, 2023
Submitted
December 5, 2023
Operation
Air carrier
Aircraft
N8554X
Make and model
Boeing 7378H4
Aircraft serial
36993
Aircraft time
19,892 hours, 9,901 cycles
Part
Support Plate
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

CORROSION FWD CARGO BAY R/H FLOOR TO SIDEWALL SUPPORT PLATE MULTIPLE AREAS AROUND NUT PLATE HOLES BS500A TO BS500I RBL22 WL156<[01] VERIFIED STEPS 1;2 COMPLETE AND MEASUREMENT TABLE.;[02] CUSTOMER CARD COMPLETE AND VERIFIED MEASUREMENT TABLE.;[03] CORROSION ON FLOOR TO SIDEWALL SUPPORT WAS FOUND TO BE OUT OF LIMITS; REMOVE AND REPLACED SIDEWALL SUPPORT AT BS 500A TO 500I RBL 22 WL 156 PER SRM 51-40-02-0G-0 AND DWG 143A7500.;[04] VERIFIED COMPLETION OF CORRECTIVE ACTIONS 3 AND MEASUREMENT TABLE.

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