Service difficulty report · Floorbeam · Boeing 7377H4

Difficulty date
July 29, 2021
Submitted
September 14, 2021
Operation
Air carrier
Aircraft
N491WN
Make and model
Boeing 7377H4
Aircraft serial
33867
Aircraft time
53,758 hours, 31,898 cycles
Part
Floorbeam
Condition
Cracked
Location
Bs 540 Rbl 1
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

CRACKED PANEL BREAK AT PASSENGER CABIN BS540 RBL1 WL208. ; / [01] APPLIED EWIS PROTECTION BELOW BREAK PANEL STA 540; BL0-RBL 25; WL 208 PER AMM 20-60-07-913-801; [02] REMOVED DAMAGED BREAK PANEL STA 540; BL0-RBL 25; WL 208 PER SRM 51-40-02-0G-0.; [03] LOCATED AND DRILLED NEW BREAK PANEL STA 540; BL0-RBL 25; WL 208 PER SRM 51-40-01-0G-0; SRM 51-40-05-0G-0. OK TO INSTALL; [04] VERIFIED LOCATE AND DRILL OF NEW BREAK PANEL STA 540; BL0-RBL 25; WL 208 PER SRM 51-40-01-0G-0; SRM 51-40-05-0G-0. OK TO INSTALL; [05] INSTALLED NEW BREAK PANEL STA 540; BL0-RBL25; WL 208 PER SRM 51-40-02-0G-0; REF IPC 53-42-11-66.; [06] REMOVED EWIS PROTECTION BELOW BREAK PANEL STA 540; BL0-RBL 25; WL 208 PER AMM 20-60-07-913-801; [07] APPLIED CIC TO BREAK PANEL STA 540; BL0-RBL25; WL 208 PER AMM 51-21-91-620-802; TIME APPLIED UTC TIME 2030.; [08] VERIFIED INSTALLATION OF NEW BREAK PANEL STA 540; BL0-RBL25; WL 208 PER SRM 51-40-02-0G-0; REF IPC 53-42-11-66 AND REMOVAL OF EWIS PROTECTION. VERIFIED CIC APPLICATION; [09] CIC WAS FULLY CURED ON 16AUG21 AT 22:30 UTC TIME PER AMM 51-21-91-620-803. ALL STEPS ARE COMPLETE.; [10] VERIFIED COMPLETION; [11] VERIFIED ACTION 9

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