Service difficulty report · Baffle · Boeing 7377H4

Difficulty date
June 11, 2021
Submitted
July 19, 2021
Operation
Air carrier
Aircraft
N489WN
Make and model
Boeing 7377H4
Aircraft serial
33855
Aircraft time
54,253 hours, 32,244 cycles
Part
Baffle
Condition
Damaged
Location
Bs 500-500a
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

FCB L/H FLOOR TO SIDEWALL BAFFLE HAS OVERSIZED HOLES COMMON TO UPPER HORIZONTAL FLANGE BETWEEN BS500 & BS500A LBL25 WL156 ; / [01] PART HAS NO ALLOWABLE DAMAGE LIMIT ON SRM; REPAIR BY REPLACEMENT PER SRM 51-10-02-0G-0<BR><BR>REMOVED FCB BAFFLE BS 500-500A LBL 25 PER SRM 51-40-02-0G-0; [02] VERIFIED PART HAS NO ALLOWABLE DAMAGE LIMIT ON SRM; REPAIR BY REPLACEMENT PER SRM 51-10-02-0G-0.; [03] LOCATED AND DRILLED FCB L/H FLOOR TO SIDEWALL BAFFLE BETWEEN BS500 - BS500A LBL25 WL 156 IAW SRM 51-40-05-0G-0 AND DWG 143A7505; [04] CONFIRMED; VERIFIED; [05] OK TO INSTALL.; [06] OK TO INSTALL.; [07] INSTALLED NEW BAFFLE AT BS500-500A LBL25 WL 156 IAW SRM 51-40-02-0G-0 AND DWG 143A7505.; [08] VERIFIED INSTALLED NEW BAFFLE AT BS 500A-500B LBL25 WL 156 IAW SRM 51-40-02-0G-0 AND DWG 143A7505.; [09] VERIFIED INSTALLED NEW BAFFLE AT BS500-500A LBL25 WL 156 IAW SRM 51-40-02-0G-0 AND DWG 143A7505.

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