Service difficulty report · Intercostal · Boeing 7377H4

Difficulty date
August 6, 2021
Submitted
August 23, 2021
Operation
Air carrier
Aircraft
N964WN
Make and model
Boeing 7377H4
Aircraft serial
36965
Aircraft time
32,901 hours, 20,020 cycles
Part
Intercostal
Condition
Cracked
Location
Bs 500c
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 CRACKED IN FWD CARGO BAY BS 500C LBL 25 WL 155 ; / [01] REMOVED FWD CARGO BAY INTERCOSTAL BS 500B-500C LBL 25 WL 155 IAW SRM 51-40-02; [02] LOCATED AND DRILLED NEW INTERCOSTAL BS 500B-500C LBL 25 WL 155; PER SRM 51-40-05 AND DWG 143A7505 SH118. OK TO INSTALL; [03] VERIFIED DRILL LOCATION AND DRILL UP PER SRM 51-40-05 AND DWG 143A7505 SH118. OK TO INSTALL; [04] INSTALLED FWD CARGO BAY INTERCOSTAL BS 500B-500C LBL 25 WL 155 IAW SRM 51-40-02 AND DWG 143A7505 SH 118.; [05] VERIFIED INSTALLATION OF THE INTERCOSTAL BS 500B-500C LBL 25 WL 155 IAW SRM 51-40-02 AND DWG 143A7505 SH 118; [06] UPDATED MEASUREMENTS; [07] VERIFIED MEASUREMENTS; [08] VERIFIED JOB TASK IS ACCOMPLISHED PER SRM 51-40-02; AND BOEING DWG 143A7505.

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