Service difficulty report · Stringer · Boeing 73776N

Difficulty date
February 1, 2022
Submitted
February 22, 2022
Operation
Air carrier
Aircraft
N7725A
Make and model
Boeing 73776N
Aircraft serial
32671
Aircraft time
50,724 hours, 25,358 cycles
Part
Stringer
Condition
Cracked
Location
Fuselage
Stage of operation
UK
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 STRINGER AT AREA AFT OF FCB BS536 S-25L WL155. EVALUATED CRACK AREA ON STRINGER AT AFT OF FCB BS536 S-25L WL155; AND NO FOUND ALLOWABLE DAMAGE ON SRM 53-00-03-1A-1. REMOVED FCB STINGER CLIP FOR GAIN ACCESS AT BS520 S-25L & SHEAR TIE AT FCB AT BS520 S-25L TO S-26L IAW SRM 51-40-02-0G-0. INSTALLED STRINGER REPLACEMENT SECTION AND HAT SECTION AT FCB BS500D+10'' TO BS540 S-25L IAW SRM 53-00-03-2R-1 REPAIR 1 PART 4K-L FIG.205 AND DRAWING#143A3230. REINSTALLED SHEAR TIE FCB AT BS520 S-25L TO S-26L & STINGER CLIP AT BS520 S-25L IAW SRM 51-40-02-0G-0 AND DRAWING#143A1215.

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