Service difficulty report · Stiffener · Boeing 7377Q8

Difficulty date
March 11, 2022
Submitted
April 18, 2022
Operation
Air carrier
Aircraft
N7877H
Make and model
Boeing 7377Q8
Aircraft serial
29359
Aircraft time
50,381 hours, 27,028 cycles
Part
Stiffener
Condition
Cracked
Location
Aft Cargo Bay
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 AFT CARGO BAY BEHIND WATER SERVICE PANEL BS914 RBL10. / [01] PRIOR TO REMOVAL;FOUND PART TO HAVE NO SRM LIMITS AND SO PART IS REPAIRABLE BY REPLACEMENT;PER SRM 51-10-02 STEP 9.;[02] REMOVED STIFFENER AT AFT CARGO BAY BEHIND WATER SERVICE PANEL BS914 RBL10;IAW SRM 51-10-02;AND 51-40-02.;[03] VERIFIED CORRECTIVE ACTIONS #1 AND #2;[04] LOCATED AND DRILLED NEW STIFFENEER WITH P/N 147A7221Y32;LOT#1485029-1;PO#860513;IAW SRM 51-10-05;AND DWG#147A7221 REV.D.OK TO INSTALL.;[05] VERIFIED DRILL UP; IAW SRM 51-10-05;AND DWG#147A7221 REV D.OK TO INSTALL.;[06] INSTALLED STIFFENER AT AFT CARGO BAY BEHIND WATER SERVICE PANEL BS914 RBL 10.IAW SRM 51-40-02 AND DWG#147A7221 REV D.ALL MAINTENANCE ACTION ARE COMPLETED REQUIRE FINAL BUY OFF.;[07] CORRECTION TO CORRECTIVE ACTION 4 HAS TO BE P/N 147A7221-32; LOT#1485471-1;PO#861006.;[08] VERIFIED ITEM 6 CORRECTIVE ACTIONS.;[09] VERIFIED ITEM 7 CORRECTIVE ACTIONS.

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