Service difficulty report · Stiffener · Boeing 73776N

Difficulty date
December 29, 2022
Submitted
January 27, 2023
Operation
Air carrier
Aircraft
N7812G
Make and model
Boeing 73776N
Aircraft serial
32582
Aircraft time
56,870 hours, 33,864 cycles
Part
Stiffener
Condition
Cracked
Location
Zone 100
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

CRACKED STIFFENER AT ACB BEHIND WATER SERVICE PANEL BS918 RBL11. MARKED.<[01] EVALUATED STIFFENER; FOUND TO BE OUT OF LIMITS DUE TO NO LIMITS IN THE SRM AND REQUIRES REPLACEMENT PER SRM 51-10-02-0G-0;[02] VERIFIED CORRECTIVE ACTION 1 AND THE MEASUREMENT TABLE.;[03] REMOVED DAMAGED ACB STIFFENER BEHIND WATER SERVICE PANEL BS918; RBL11 PER SRM 51-40-02-0G-0.;[04] LOCATED AND DRILLED NEW ACB STIFFENER BEHIND WATER SERVICE PANEL BS918; RBL11 PER SRM 51-40-05-0G-0 AND AIPC 52-49-00-02. OK TO INSTALL.;[05] VERIFIED CORRECTIVE ACTIONS STEP 4. OK TO INSTALL GIVEN.;[06] INSTALLED NEW ACB STIFFENER BEHIND WATER SERVICE PANEL BS918; RBL11 PER SRM 51-40-02-0G-0 AND AIPC 52-49-00-02.;[07] VERIFIED CORRECTIVE ACTION 6.

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