Service difficulty report · Actuator · Boeing 7478F

Difficulty date
May 21, 2026
Submitted
May 29, 2026
Operation
Air carrier
Aircraft
N611UP
Make and model
Boeing 7478F
Aircraft serial
64257
Aircraft time
29,966 hours, 4,379 cycles
Part
Actuator
Part number
178800209
Part serial
59273
Condition
Corroded
Location
Zone 600
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

FOUND RT WING NR 17 OUTBD, INBD AND NR 24 INBD SIDE ROTARY ACTUATOR CORROSION. I.A.W AMM 27-81-07-404-008 REV.50 STEP 3A TO 3F(2)(N) INSTALLED NO.17 OUTBD'S INBD AND NO.24 INBD SIDE ROTARY ACTUATOR.

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