Service difficulty report · Intercostal · Boeing 7377H4

Difficulty date
June 14, 2022
Submitted
July 14, 2022
Operation
Air carrier
Aircraft
N488WN
Make and model
Boeing 7377H4
Aircraft serial
33853
Aircraft time
59,468 hours, 35,169 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 INTERCOSTAL AT BL 0 BS 277+7; BS 277+14. / [01] CRACKED ON PASSENGER CABIN INTERCOSTAL AT BL 0 BS 277+7; BS 277+14 WL 208 P/N 141A5410-3; 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 ACTIONS STEP 1.;[03] REMOVED PASSENGER CABIN INTERCOSTAL AT BL 0 BS 277+7; BS 277+14 WL 208 P/N 141A5410-3 I.A.W SRM 51-40-02-0G-0.;[04] LOCATED AND DRILLED NEW INTERCOSTALL P/N 141A5410U3AAR AT BS 277 TO BS 294 BL0 PER SRM 51-40-05 AND DWG 141A5400.<BR>OK TOINSTALL PART;[05] VERIFIED CORRECTIVE ACTION 4- OK TO INSTALL;[06] INSTALLED NEW INTERCOSTAL AT FLOOR STRUCTURE BETWEEN BS 277 TO BS 294 BL 0 PER SRM 51-40-02 AND DWG 141A5400;[07] VERIFIED CORRECTIVE ACTION #6.;[08] VERIFIED ALL STEPS COMPLETE.

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