Service difficulty report · Intercostal · Boeing 737*

Difficulty date
December 21, 2021
Submitted
February 7, 2022
Operation
Air carrier
Aircraft
N454WN
Make and model
Boeing 737*
Aircraft serial
29851
Aircraft time
59,747 hours, 35,307 cycles
Part
Intercostal
Condition
Cracked
Location
Fuselage
Stage of operation
UK
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

AFT CABIN FLOOR SUPPORT INTERCOSTAL CRACKED BETWEEN STA 927 & STA 947.5 ; BL-0 MKD ; / [01] REMOVED INTERCOSTAL CRACKED AT AFT CABIN FLOOR SUPPORT BETWEEN STA 927 & STA 947.5;BL-0 AS PER REF B737-700 SRM 51-40-02-0G-0; [02] LOCATED AND DRILLED NEW FLOOR SUPPORT INTERCOSTAL AS PER REF B737-700 SRM 51-40-05-0G-0; [03] VERIFIED STEP 2. OK TO INSTALL.; [04] INSTALLED NEW FLOOR SUPPORT INTERCOSTAL AT AFT CABIN WED AREA AS PER REF B737-700 SRM 51-40-02-0G-0 AND DRAWING #147A5400; [05] REMOVED AND REPLACED FLOOR SUPPORT INTERSCOSTAL BETWWEN STA 927 & 947.5; BL-0 AS PER REF B737-700 SRM 51-40-02-0G-0.; [06] REMOVED AND REPLACED FLOOR SUPPORT INTERSCOSTAL BETWWEN STA 927 & 947.5; BL-0 AS PER REF B737-700 SRM 51-40-02-0G-0.; [07] VERIFIED STEPS 4; 5 AND 6.