Service difficulty report · Floor Support · Boeing 7378H4

Difficulty date
October 22, 2023
Submitted
November 30, 2023
Operation
Air carrier
Aircraft
N8553W
Make and model
Boeing 7378H4
Aircraft serial
63601
Aircraft time
19,705 hours, 9,889 cycles
Part
Floor Support
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 ON FLOOR SUPPORT AT MULTIPLE FASTENER HOLES BS947+3 RBL39 -RBL46<[01] REMOVED CORROSION ON FLOOR SUPPORT AT BS947+3 RBL39- RBL46 IN BORE HOLES AND SURROUNDING AREAS; DAMAGE FOUND TO BE OUT OF LIMITS (REMOVED 0.009? OF 0.070?) IAW SRM 53-70-51-1A-1.;[02] VERIFIED CA-1. LONNIE HERMANN (TECHNICIAN); 26-OCT-2023 06:08 UTC<BR>REMOVED CORROSION ON FLOOR SUPPORT AT BS947+3 RBL39- RBL46 IN BORE HOLES AND SURROUNDING AREAS; DAMAGE FOUND TO BE OUT OF LIMITS (REMOVED 0.009? OF 0.070?) IAW SRM 53-70-51-1A-1.;[03] DRILLED REPLACEMENT FLOOR SUPPORT PER SRM 51-40-05.;[04] VERIFIED DRILLING OF FLOOR SUPPORT AND INSTALLATION

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