Service difficulty report · Sidewall Support · Boeing 7378H4

Difficulty date
October 31, 2023
Submitted
December 8, 2023
Operation
Air carrier
Aircraft
N8309C
Make and model
Boeing 7378H4
Aircraft serial
36985
Aircraft time
38,023 hours, 17,361 cycles
Part
Sidewall Support
Part number
UNKNOWN
Condition
Cracked
Location
Zn 100 Fus Lower
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

AFT CARGO FLOOR TO SIDEWALL SUPPORT IS CRACKED IN RADIUS AT BS 927+19; RBL 24; WL 177<[01] SRM 53-00-53-1A-2 IS APPLICABLE FOR THIS; AFT CARGO FLOOR TO SIDEWALL SUPPORT CRACK FOUND TO BE OUT OF LIMITS IAW SRM 53-00-53-1A-2; PART WILL BY REPLACEMENT; REMOVED INTERCOSTAL FROM BS 927 TO BS 947; RBL 24; WL 177 IAW SRM 51-40-02-0G-0;LOCATED AND DRILLED NEW INTERCOSTALL IAW SRM 51-40-05-0G-0 AND DWG 147A7500; ID: 0036; REV: - AND DWG 147A7500; ID: 0037; REV: - .<BR>REQUEST OK TO INSTALL; INSTALLED INTERCOSTAL BETWEEN BS 927 TO BS 947; RBL 24; WL 177 IAW SRM 41-40-02-0G-0 AND DWG 147A7500; ID: 0036; REV: - AND DWG 147A7500; ID: 0037; REV: -.;[02] VERIFIED CORRECTIVE ACTION COMPLETE; WITH MEASUREMENTS

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