Service difficulty report · Floor Support · Boeing 7377CT

Difficulty date
May 11, 2021
Submitted
June 21, 2021
Operation
Air carrier
Aircraft
N7828A
Make and model
Boeing 7377CT
Aircraft serial
33697
Aircraft time
60,327 hours, 30,541 cycles
Part
Floor Support
Condition
Cracked
Location
Bs 344-360 Bl 0
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

INTERCOSTAL WITH A CRACK ON UPPER SURFACE AT CABIN FLOOR STRUCTURE AT ABOUT BL-0 BETWEEN STA 344-360 ; / INSTALLED EWIS PROTECTION;LOCATED AND DRILL NEW INTERCOSTAL BETWEEN FS 344-360 BL 0;OK TO TREAT AND PRIME AREA;OK TO INSTALL INTERCOSTAL;REMOVED INTERCOSTAL BETWEEN FS 344-360 BL 0;;VERIFIED EWIS PROTECTION REMOVAL;VERIFIED INTERCOSTAL INSTALLATION;VERIFIED TREAT AND PRIME STEP;DOCUMENTED PARTS INSTALLATION;INSTALLED NEW INTERCOSTAL IN REF SRM 51-40-02-0G-0;AND DRAWING NUMBER 141A5400;REMOVED EWIS PROTECTION IN RED AMM 20-60-07-913-801;TREAT AND PRIMER HOLES AT INTERCOSTAL IN REF SRM 51-20-02-0G-0

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