Service difficulty report · Skin · Boeing 7474R7F

Difficulty date
February 2, 2024
Submitted
March 6, 2024
Operation
Air carrier
Aircraft
N581UP
Make and model
Boeing 7474R7F
Aircraft serial
25866
Aircraft time
125,147 hours, 21,075 cycles
System (JASC)
5755 · Spoilers
Part
Skin
Condition
Debonded
Location
Rt Nr 9 Spoiler
Component
Spoiler
Component part number
658002501
Stage of operation
IN
How discovered
9
Nature of condition
O
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

MAJOR REPAIR, DISBOND - SKIN PNL , RH WING NO.9 SPOILER UPPER SURFACE. INSTALL DOUBLER WITH FILM ADHESIVE AND CURED AT 250°F FOR 100 MINUTES WITH MINIMUM VACUUM OF 22 IN/HG I.A.W. 747-400F SRM 51-70-10-2R-0 PARAGRAPH 18 & 20 REV.99.

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