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
Part number
141A5410U25
Condition
Cracked
Location
Pax Cabin
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 FWD PASSENGER CABIN INTERCOSTAL AT RBL 32 BS 344+5. / [01] UPON FURTHER INVESTIGATION; CLEANED DISCREPANCY AREA AND PERFORMED A VISUAL INSPECTION WAS NO CRACKED NOTED; IAW SRM 51-10-02 AND SOPM 20-30-03;[02] ACCOMPLISHED HFEC INSPECTION OF DESCRPANT AREA IAW NDTM D6-37239 PART 6; 51-00-00 PROC 23. VERIFIED CRACK EXISTS. TOOL I.D. IS000450 500D;[03] CORRECTION STEP 1; PART MUST BE REPLACED AFTER NDI EVALUATION IAW SRM 53-10-51-1A-1.;[04] REMOVED FWD. PAX CABIN INTERCOSTAL; IAW SRM 51-40-02;[05] LOCATED AND DRILLED NEW FWD PASSENGER CABIN INTERCOSTAL AT RBL32 BS 344+5 P/N 141A5410-25 I.A.W SRM 51-40-05-0G-0 AND DWG 141A5400.;[06] UPDATED PART USED;[07] OK TO INSTALL NEW FWD PASSENGER CABIN INTERCOSTAL AT RBL32 BS 344+5 P/N 141A5410-25.;[08] VERIFIED ACTION #4-7;[09] OK TO INSTALL GIVEN;[10] INSTALLED FWD PASSENGER CABIN INTERCOSTAL AT BS 344 TO BS 360; RBL32 ;WL 208; IAW SRM 51-40-02-0G-0 AND DWG# 141A5400;[11] VERIFIED CORRECTIVE ACTION #10.<BR>VERIFIED MEASUREMENTS.

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