Service difficulty report · Stringer · Boeing 7377BD

Difficulty date
September 24, 2023
Submitted
September 26, 2023
Operation
Air carrier
Aircraft
N7728D
Make and model
Boeing 7377BD
Aircraft serial
33925
Aircraft time
55,825 hours, 29,209 cycles
Part
Stringer
Part number
NOTREPORTED
Condition
Cracked
Location
Bs 993 S16r
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

EVIDENCE OF CRACK COMING FROM VERY FWD FASTENER OF STR 16R, BS 993. REMOVED FASTENER WERE SUSPECTED CRACK IS AND 12 FASTENTERS AFT IAW SRM 51-40-02. VERIFIED 13 TOTAL FASTENERS REMOVED. ACCOMPLISHED HFEC INSPECTION OF STRINGER BETWEEN FWD FASTENER HOLE AND FWD EDGE OF STRINGER. VERIFIED CRACK INDICATION OF STRINGER ONLY, EXTENDING FROM FASTENER HOLE TO FWD STRINGER EDGE PER NDT PART 6; 51-00-00; PROCEDURE 23. REPAIRED REF EA#23-153-02899 WIP3.

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