Service difficulty report · Doubler · Boeing 74747UF

Difficulty date
April 30, 2026
Submitted
May 21, 2026
Operation
Air carrier
Aircraft
N258SN
Make and model
Boeing 74747UF
Aircraft serial
29258
Aircraft time
94,698 hours, 15,226 cycles
System (JASC)
5711 · Wing Spar
Part
Doubler
Part number
65B1956OU13
Condition
Corroded
Location
Zone 500
Stage of operation
IN
How discovered
V
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

LH WING REAR SPAR NO. 2 MAIN TANK STRUCTURE JUMPER POINT AROUND FORWARD OVERRIDE/JETTISON PUMP HAS EVIDENCE OF CORROSION. REMOVED AND REPLACED DOUBLER AT LT WING REAR SPAR NR 2 MAIN TANK STRUCTURE OVERRIDE / JETTISON PUMP PER SRM 51-40-02.

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