Service difficulty report · Intercostal · Boeing 737*

Difficulty date
January 6, 2022
Submitted
February 8, 2022
Operation
Air carrier
Aircraft
N943WN
Make and model
Boeing 737*
Aircraft serial
36913
Aircraft time
39,369 hours, 23,825 cycles
Part
Intercostal
Part number
141A541012
Condition
Cracked
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

CABIN FLOOR INTERCOSTAL CRACKED AT FASTENER HOLE; BS 312-328; LBL 45; WL 208 (MARKED) ; / [01] CRACK FOUND ON INTERCOSTAL BS 312-BS328 LBL-45 WL-208.1 FOUND TO BE OUT OF LIMIT IAW SRM 53-10-51-1A-1 PAR.4B(1) FIG-105-K; [02] REMOVED DAMAGED INTERCOSTAL AND LOCATED AND DRILLED NEW INTERCOSTAL P/N 141A5410-12 AT BS 312-BS 328 LBL-45 WL 208.1 IAW SRM 51-40-05-0G-0 AND DWG#141A5400 OK TO INSTALL; [03] VERIFIED CORRECTIVE ACTION ITEMS 1 & 2. OK TO INSTALL NEW INTERCOSTAL AT BS 312-328; LBL 45; WL 208 GIVEN.; [04] INSTALLED INTERCOSTAL AT BS 312-TO-BS 328 LBL-45 WL 208.1 IAW SRM 51-40-02-0G-0 AND DWG#141A5400; [05] VERIFIED CORRECTIVE ACTION ENTRY 4.; [06] VERIFIED CARD COMPLETE.