Service difficulty report · Stringer · Boeing 7377H4

Difficulty date
November 25, 2023
Submitted
November 28, 2023
Operation
Air carrier
Aircraft
N401WN
Make and model
Boeing 7377H4
Aircraft serial
29813
Aircraft time
76,427 hours, 45,306 cycles
Part
Stringer
Part number
UNKNOWN
Condition
Cracked
Location
Lt Wing
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

LEFT WING HAS CRACK INDICATION ON STRINGER 14 ON THE UPPER SKIN AT THE CHORDWISE SKIN SPLICE NEAR WS 579 FASTENERS NR 1 & 2 PER NDT PART 6 57-10-60 FIG 1SHEET 6. PERFORMED NDT INSPECTION OF FASTENERS 1 AND 2 AT WS 579; STRINGER 14 CHORD SPLICE PER 51-00-00 PROCEDURE 9 AND 51-00-00 PROCEDURE 23 PER BOEING NDT 57-10-60. NO FAULTS FOUND ON WING INTERNAL INSP. AT STRINGER 14; WS 579.;[03] EA 23-157-03471 C/W

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