Service difficulty report · Intercostal · Boeing 7377CT

Difficulty date
August 12, 2021
Submitted
September 21, 2021
Operation
Air carrier
Aircraft
N570WN
Make and model
Boeing 7377CT
Aircraft serial
33657
Aircraft time
58,630 hours, 29,455 cycles
Part
Intercostal
Condition
Cracked
Location
Fuselage
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

MAIN CABIN FWD WET AREA FLOOR STRUCTURE INTERCOSTAL CRACKED BETWEEN BS 328 AND BS 312 RBL-30. MKD 126/1. ; / [01] REMOVED FLOOR STRUCTURE INTERCOSTAL AT MAIN CABIN FWD WET AREA BETWEEN STA 312 - STA 328 RBL-30. REF: 51-40-02-0G-0.; [02] LOCATED AND DRILLED NEW INTERCOSTAL AS PER SRM 51-40-05-0G-0.; [03] VERIFIED STEP 2; [04] OK TO INSTALL NEW INTERCOSTAL; [05] INSTALLED NEW INTERCOSTAL AS PER SRM 51-40-02-0G-0 AND DWG 141A5400.; [06] VERIFIED INSTALLED NEW INTERCOSTAL AS PER SRM 51-40-02-0G-0 AND DWG 141A5400. RII; [07] REMOVED AND INSTALLED NEW INTERCOSTAL AT MAIN CABIN FORWARD WET AREA FLOOR STRUCTURE BETWEEN STATIONS 312 AND 328 RBL 30 AS PER SRM 51-40-02-0G-0 AND DWG 141A5400.; [08] VERIFIED STEP 7

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