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
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 RBL 15 BS 294+6. / [01] CRACK FOUND ON FWD CABIN PASSENGER INTERCOSTAL AT RBL 15 BS 294+6 FOUND TO BE OUT OF LIMIT IAW SRM 53-10-51-1A-1 PAR 4B FIG 105 C; PART WILL BE REPAIRED BY REPLACEMENT IAW SRM 51-10-02-0G-0 PAR 9C;[02] REMOVED PASSENGER CABIN FWD INTERCOSTAL AT RBL 15 BS 294+6 PER SRM 51-40-02-0G-0;[03] VERIFIED CORRECTIVE ACTION 1. OUT OF LIMITS; NO CRACKS ALLOWED PER SRM 53-10-51-1A-1 PAR 4B FIG 105 C;[04] RECIVED NEW INTERCOSAL ITEM 141A5410-146 LOT 1487010-1 LOCATED AND DRILLED NEW INTERCOSTAL AT RBL 15 BS 294 - BS 312 WL 208; IAW B 737-700 SRM 51-40-05-0G-0 DWG 141A5400.-;[05] VERIFIED CORRECTIVE ACTION ITEM 4.;[06] VERIFIED APPLICABILITY SRM 51-10-02-0G-0 AND SRM 53-10-51-0I-2 IDENTIFICATION 2 ARE APPLICABLE TO THIS A/C;[07] OK TO INSTALL;[08] OK TO INSTALL INTERCOSTAL AT BS294-RBL 15.;[09] INSTALLED NEW INTERCOSTAL IN PASSENGER CABIN FWD AT RBL 15 BS 294 - BS 312 WL 208 . IAW 737-700 SRM 51-40-02-0G-0; DWG 141A5400.;[10] INSTALLED ON CORRECTIVE ACTIONS 9;[11] VERIFIED INSTALLATION OF INTERCOSTAL;[12] UPDATED MEASUREMENT;[13] UPDATED PARTS;[14] TASK COMPLETED

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