Service difficulty report · Floor Support · Boeing 73779P

Difficulty date
June 23, 2021
Submitted
July 27, 2021
Operation
Air carrier
Aircraft
N7820L
Make and model
Boeing 73779P
Aircraft serial
28253
Aircraft time
52,814 hours, 34,351 cycles
Part
Floor Support
Condition
Cracked
Location
Bs 312-328 Lbl46
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

INTEROSTAL BETWEEN FSTA 328 AND STA 312 LBL 46'HOLE CRACKED ; / [01] INSTALLED EWIS PROTECTION STA.312 LBL 46; REF.B737-7 AMM 20-60-07-913-801; [02] VERIFIED EWIS INSTALLATION; [03] LOCATED AND DRILLED INTERCOSTAL REF. B737-7 SRM 51-40-05-0G-0; DRW #141A5400; [04] TREATED AND PRIMED HOLES REF. B737-7 SRM 51-20-01-0G-0; [05] VERIFIED LOCATED ;DRILLED HOLES AND TREATED AND PRIMED; [06] OK TO INSTALL INTERCOSTAL; [07] REMOVED AND REINSTALLED INTERCOSTAL STA.312; LBL46' REF. B737-7 SRM 51-40-02-0G-0 AND DRAWING #141A5400; [08] VERIFIED WORK PERFORMED; [09] REMOVED EWIS PROTECTION REF. B737-7 AMM 20-60-07-913-801; [10] VERIFIED EWIS REMOVAL

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