Service difficulty report · Intercostal · Boeing 7378H4

Difficulty date
August 2, 2022
Submitted
August 24, 2022
Operation
Air carrier
Aircraft
N8656B
Make and model
Boeing 7378H4
Aircraft serial
42530
Aircraft time
24,629 hours, 11,108 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 FWD PASSENGER CABIN INTERCOSTAL AT LBL 11 BS 344+9. / [01] UPDATED MEASUREMENT TABLE;[02] REMOVED INTERCOSTAL AT BS344 TO BS360 BL0 FOR ACCESS IAW SRM 51-40-02-0G-0;[03] CRACK ON UPPER FLANGE OF INTERCOSTAL EXCEEDS REPAIRABLE LIMIT IN SRM 53-10-51-1A-1; OUT OF LIMITS AND TO BE REPLACED IAW SRM 51-10-02-0G-0 STEP 9.;[04] REMOVED INTERCOSTAL AT BS344 TO BS360 LBL11 IAW SRM 51-40-02-0G-0;[05] INSPECTED & VERIFIED CORRECTIVE ACTION ITEM 3.;[06] UPDATED MATERIAL THICKNESS;[07] CERTIFY;[08] VERIFIED MEASUREMENTS ITEM 2;[09] LOCATE AND DRILLED PASSENGER CABIN INTERCOSTAL AT LBL 11 BS 344+9; IAW SRM 51-40-05-0G-0; OK TO INSTALL;[10] CORRECTIVE ACTION STEP# 9 - LOT # 1499251 AND DWG #141A5400 REV:-;[11] CERTIFY;[12] OK TO INSTALL PASSENGER CABIN INTERCOSTAL AT LBL 11 BS 344- BS 360 LBL 11;[13] VERIFIED MEASUREMENT TABLE;[14] STEP 2; OK TO INSTALL INTERCOSTAL BS 344 TO BS 360 BLO TO F.O.M IAW SRM 51-40-02-0G-0;[15] CERTIFY;[16] OK TO INSTALL INTERCOSTAL BS 344 TO BS 360 BLO TO F.O.M IAW SRM 51-40-02-0G-0;[17] INSTALLED NEW FWD PASSENGER CABIN INTERCOSTAL AT LBL 11 BS 344 - BS 360; IAW 51-40-02-0G-0 AND DWG # 141A5400; REV:-;[18] OK TO INSTALL INTERCOSTAL AT BS344 TO BS360 BL0 REMOVED FOR ACCESS GIVEN;[19] INSTALLED INTERCOSTAL BL 0 BS 344 - BS 360 IAW SRM 51-40-02-0G-0 AND DWG # 141 A5400 REV:-;[20] CERTIFY;[21] CERTIFY;[22] COMPLETE;[23] VERIFIED MEASUREMENT TABLE;[24] VERIFIED CORRECTIVE ACTION #19

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