Service difficulty report · Support · Boeing 73776Q

Difficulty date
April 17, 2023
Submitted
May 9, 2023
Operation
Air carrier
Aircraft
N551WN
Make and model
Boeing 73776Q
Aircraft serial
30280
Aircraft time
66,624 hours, 41,198 cycles
Part
Support
Condition
Cracked
Location
Zn 200 Fus Top
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

WING CENTER SECTION - BREAK DOWN SUPPORT HAS CRACK BS 540 LBL 1.5 WL 208<[01] REMOVED WING CENTER SECTION - BREAK DOWN SUPPORT BS 540 BL0 TO LBL 25 WL 208 DUE TO NO ALLOWABLE DAMAGE FOUND FOR THIS ITEM ; IAW SR 51-10-02 AND SRM 51-40-02;[02] REMOVED WING CENTER SECTION - BREAK DOWN SUPPORT BS 540 BL0 TO LBL 25 WL 208 DUE TO NO ALLOWABLE DAMAGE FOUND FOR THIS ITEM ; IAW SRM 51-10-02 AND SRM 51-40-02;[03] LOCATED AND DRILLED WING CENTER SECTION - BREAK DOWN SUPPORT FROM BS 540 LBL0 TO LBL25 WL 208 PER B737-700 DWG 143A5240 REV -.OK TO INSTALL;[04] VERIFIED CORRECTIVE ACTION 3. OK TO INSTALL IS GIVEN.;[05] INSTALLED NEW WING CENTER SECTION - BREAK DOWN SUPPORT BS 540 LBL0 TO LBL 25 WL 208 PER B737-700 DWG 143A5240 REV -.;[06] VERIFIED MEASUREMENT TABLE.;[07] RII; VERIFIED CORRECTIVE ACTION 5.;[08] UPDATED PARTS USAGE;[09] VERIFIED MEASUREMENT TABLE AND TASK CARD COMPLETE.

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