Service difficulty report · Intercostal · Boeing 7378H4

Difficulty date
September 18, 2023
Submitted
October 25, 2023
Operation
Air carrier
Aircraft
N8308K
Make and model
Boeing 7378H4
Aircraft serial
36682
Aircraft time
37,857 hours, 17,208 cycles
Part
Intercostal
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 BAY FLOOR TO SIDEWALL SUPPORT; COMMON TO AFT BULKHEAD SUPPORT IS CRACKED IN RADIUS AT BS 947; RBL 22; WL 184<[01] SRM 53-00-53-1A-2 IS APPLICABLE; AFT CARGO BAY FLOOR TO SIDEWALL SUPPORT INTERCOSTAL FOUND TO BE OUT OF LIMITS IAW SRM 53-00-53-1A-2; PART WILL BY REPLACEMENT; REMOVED AFT CARGO BAY FLOOR TO SIDEWALL SUPPORT INTERCOSTAL AT BS 927 AND BS 947; RBL 22; WL 18; IAW SRM 51-40-02-0G-0 AND DWG 147A7500; ID:0037; REV: -;LOCATED AND DRILLED NEW AFT CARGO BAY FLOOR TO SIDEWALL SUPPORT INTERCOSTAL AT BS 927 AND BS 947; RBL 22; WL 18; IAW SRM 51-40-05-0G-0 AND DWG 147A7500; ID:0037; REV:-;REQUEST OK TO INSTALL;INSTALLED NEW AFT CARGO BAY FLOOR TO SIDEWALL SUPPORT INTERCOSTAL BETWEEN BS 927 AND BS 947; RBL 22; WL 184; IAW SRM 51-40-02-0G-0 AND DWG 147A7500; ID:0037; REV: -.

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