Service difficulty report · Strap · Boeing 7378H4

Difficulty date
April 3, 2023
Submitted
April 26, 2023
Operation
Air carrier
Aircraft
N8529Z
Make and model
Boeing 7378H4
Aircraft serial
36974
Aircraft time
19,992 hours, 9,666 cycles
Part
Strap
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 TIE STRAP IS CRACKE AT FASTENER HOLE BS 807 RBL 22 WL 156<[01] CORRECTION TO TASK DETAIL SHOULD STATE ' AFT CARGO BAY TIE STRAP IS CRACKED AT FASTENER HOLE BS 807 RBL 22 WL 156 '[06] LOCATED AND DRILLED NEW AFT CARGO BAY TIE STRAP AT BS 767+7' TO BS 867- 6' RBL 22 WL 156 IAW 51-40-05-0G-0; DWG 146A8120 AND DWG 146A0081.;[07] REMOVED DAMAGED AFT CARGO BAY TIE STRAP AT BS 767+7' TO BS 867- 6' RBL 22 WL 156 IAW SRM 51-40-02-0G-0;[08] LOCATED AND DRILLED NEW AFT CARGO BAY TIE STRAP AT BS 767+7' TO BS 867- 6' RBL 22 WL 156 IAW 51-40-05-0G-0; DWG 146A8120 AND DWG 146A0081. AND OK TO INSTALL.;[09] VERIFIED CORRECTIVE ACTION 8. OK TO INSTALL GIVEN;[10] INSTALLED 100% TEMPORARY AND PERMANENT FASTENERS ON NEW AFT CARGO BAY TIE STRAP AT BS 767+7' TO BS 867- 6' RBL 22 WL 156 BEFORE SQUEEZE OUT TIME EXPIRE AT 07-APR-2023 23:42 UTC SEALANT USED BMS 5-95 C-20 IAW SOPM 20-50-19; SRM 51-40-05-0G-0; DWG 146A8120 AND DWG 146A0081;[11] CORRECTION: INSTALLED 100% TEMPORARY AND PERMANENT FASTENERS ON NEW AFT CARGO BAY TIE STRAP AT BS 767+7' TO BS 867- 6' RBL 22 WL 156 BEFORE SQUEEZE OUT TIME EXPIRE AT 08-APR-2023 17:42 UTC SEALANT USED BMS 5-95 C-20 IAW SOPM 20-50-19; SRM 51-40-05-0G-0; DWG 146A8120 AND DWG 146A0081;[12] VERIFIED CORRECTIVE ACTION STEPS 10 AND 11.;[13] INSTALLED NEW AFT CARGO BAY TIE STRAP AT BS 767+7' TO BS 867- 6' RBL 22 WL 156 PER SRM 51-40-02-0G-0; DWG 146A8120 AND DWG 146A0081

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