Service difficulty report · Attach Angle · Boeing 7377H4

Difficulty date
April 25, 2023
Submitted
May 25, 2023
Operation
Air carrier
Aircraft
N959WN
Make and model
Boeing 7377H4
Aircraft serial
36674
Aircraft time
38,285 hours, 23,370 cycles
Part
Attach Angle
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

CRACK ON AFT CARGO BAY L/H LOWER BULKHEAD SUPPORT ATTACH ANGLE AT LBL 10 BS 847+18 WL 164.<[01] THIS PART DOES NOT HAVE ENTRY ON THE LOWER ALLOWABLE DAMAGE LIMITS THERE FOR IT HAS TO BE REPAIRED BY REPLACEMENT PER SRM 51-10-02 STEP 9;[02] REMOVED ON AFT CARGO BAY L/H LOWER BULKHEAD SUPPORT ATTACH ANGLE AT LBL 10 BS 847+18 WL 164 IWA SRM 51-40-02-0G-0;[03] VERIFIED CORRECTIVE ACTIONS 1 AND 2;[04] LOCATED AND DRILLED NEW SUPPORT ATTACH ANGLE AT LBL 10 BS 847+18 WL 164.; IAW 737-700 SRM 51-40-05-0G-0 DWG 149A8102.-;[05] OK TO INTAL;[06] VERIFIED CORRECTIVE ACTIONS 4 AND 5.;[07] INSTALLED NEW ON AFT CARGO BAY L/H LOWER BULKHEAD SUPPORT ATTACH ANGLE LBL 10 BS 847+18 WL 164 IAW SRM 51-40-02 AND DWG 149A8102;[08] VERIFIED CORRECTIVE ACTION 7 AND MEASUREMENT TABLE.

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