Service difficulty report · Intercostal · Boeing 7377K9

Difficulty date
August 29, 2022
Submitted
September 20, 2022
Operation
Air carrier
Aircraft
N7878A
Make and model
Boeing 7377K9
Aircraft serial
34320
Aircraft time
52,141 hours, 25,914 cycles
Part
Intercostal
Condition
Cracked
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 FWD CABIN INTERCOSTAL AT BL 0 BS 277+7; BS 277+14. / [01] VERIFIED APPLICABILITY AS PER SRM 53-10-51-1A-1<BR><BR>AFTER EVALUATION CRACK WAS FOUND OUT OF LIMIT IAW SRM 53-10-51-1A-1<BR>PART MUST BE REPLACED AS PER SRM 51-10-02.<BR><BR>REMOVED INTERCOSTAL BS277 - BS294; BL0; IAW SRM 51-40-02<BR><BR>LOCATED AND DRILLED NEW INTERCOSTAL IAW SRM 51-40-05 AND DWG 1441A5400.;[02] VERIFIED CORRECTIVE ACTION 1;[03] INSTALLED NEW INTERCOSTAL BS277 - BS294; BL0; IAW SRM 51-40-02<BR> AND DWG 144A5400.;[04] VERIFIED FASTENER INSTALLATION;[05] VERIFIED CORRECTIVE ACTION 3 AND MEASUREMENT TABLE

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