Service difficulty report · Intercostal · Boeing 7377H4

Difficulty date
July 30, 2021
Submitted
September 15, 2021
Operation
Air carrier
Aircraft
N447WN
Make and model
Boeing 7377H4
Aircraft serial
33720
Aircraft time
58,733 hours, 34,620 cycles
Part
Intercostal
Condition
Cracked
Location
Bs 500
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 AT FWD CARGO BAY BS 500 LBL 24 WL 156 ; / [01] REMOVED INTERCOSTAL AT FWD CARGO BAY BS 500 LBL 24 WL 156 IAW SRM 51-40-02-0G-0-A00729; [02] CORRECTION MEASURES; [03] CORRECTED MEASUREMENTS SECTION; [04] LOCATED AND DRILLED NEW INTERCOSTAL AT FWD CARGO BAY BS 500 LBL 24 WL 156 PER SRM 51-40-05-0G-0; [05] VERIFIED LOCATION ADN DRILL UP OF INTERCOSTAL PER SRM 51-40-05; [06] OK TO INSTALL NEW INTERCOSTAL ON FWD CARGO BAY BS 500 LBL 24 WL 156 PER SRM 51-40-02-0G-0; [07] OK TO INSTALL INTERCOSTAL; [08] INSTALLED INTERCOSTAL AT FWD CARGO BAY BS 500 LBL 24 WL 156 PER SRM 51-40-02-0G-0; [09] VERIFIED CORRECTIVE ACTION ENTRY 8; [10] VERIFIED CARD COMPLETE

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