Service difficulty report · Floor Support · Boeing 7378H4

Difficulty date
May 14, 2024
Submitted
June 14, 2024
Operation
Air carrier
Aircraft
N8572X
Make and model
Boeing 7378H4
Aircraft serial
64251
Aircraft time
19,855 hours, 10,226 cycles
Part
Floor Support
Part number
UNKNOWN
Condition
Corroded
Location
Bs 953 Lbl 24
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

FLOOR SUPPORT STRUCTURE AT BS 953 BL 24 LEFT HAS A SPOT OF CORROSION AT FASTENER LOCATION. AS MARKED.<[01] REMOVED CORROSION FROM AREA; ORIGINAL THICKNESS WAS .080'. REMOVED .014' OF MATERIAL. REMAINING THICKNESS IS .066'. FOUND TO BE OUT OF LIMITS IAW B737-800 SRM 53-00-04-1A-1; 51-70-51-0I-1; REMOVED; LOCATED; DRILLED; INSTALLED 147A5660-3 INTERCOSTAL; AND RESTORED COATINGS BAC DWG#147A5650;REV:- AND B737-NG SRM 51-40-02;[02] REMOVED CORROSION FROM AREA; ORIGINAL THICKNESS WAS .080'. REMOVED .014' OF MATERIAL. REMAINING THICKNESS IS .066'. FOUND TO BE OUT OF LIMITS IAW B737-800 SRM 53-00-04-1A-1; 51-70-51-0I-1; REMOVED; LOCATED; DRILLED; INSTALLED 147A5660-3 INTERCOSTAL; AND RESTORED COATINGS BAC DWG#147A5650;REV:- AND B737-NG SRM 51-40-02<BR>VERIFIED ACCOMPLISHMENT

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