Service difficulty report · Intercostal · Boeing 7377H4

Difficulty date
June 20, 2022
Submitted
July 27, 2022
Operation
Air carrier
Aircraft
N486WN
Make and model
Boeing 7377H4
Aircraft serial
33852
Aircraft time
59,624 hours, 35,506 cycles
Part
Intercostal
Condition
Cracked
Location
Fwd 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

CRACK ON PASSENGER CABIN FWD INTERCOSTAL AT LBL 46 BS 328+7. / [01] CRACKED ON PASSENGER CABIN FWD INTERCOSTAL AT LBL 46 BS 328+7 WL 208 P/N 141A5410-16; FOUND TO BE OUT LIMITS DUE TO NO ALLOWABLE DAMAGE IN SRM; IT WILL BE REPAIRABLE BY REPLACEMENT I.A.W SRM 51-10-02-0G PAR 9C;[02] VERIFIED CORRECTIVE ACTION #1;[03] RECIVED NEW INTERCOSTAL ITEM 141A5410-16 LOT 1495336-1 LOCATED AND DRILLED NEW INTERCOSTAL AT LBL 46 BS 328 TO 344 WL 208; IAW 737-700 SRM 51-40-05-0G-0 DWG 141A5400.- OK TO INSTALL.-;[04] VERIFIED CORRECTIVE ACTIONS 1 -3. OK TO INSTALL;[05] INSTALLED NEW INTERCOSTAL AT LBL 46 BS 328 TO 344 WL 208. IAW 737-700 SRM 51-40-02-0G-0; DWG 141A5400 . ALL REQUIRED MAINTENANCE ACTIONS ARE COMPLETE=REQUEST FINAL BUYOFF;[06] INSTALLED ON CORRECTIVE ACTIONS 5;[07] VERIFIED FASTENER INSTALLATION;[08] VERIFIED CORRECTIVE ACTION 5 AND 6

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