Service difficulty report · Actuator · Boeing 747451

Difficulty date
May 25, 2017
Submitted
May 26, 2017
Operation
Air carrier
Aircraft
N669US
Make and model
Boeing 747451
Aircraft serial
24224
Aircraft time
113,033 hours, 13,701 cycles
Part
Actuator
Condition
Malfunctioned
Location
Le Flaps
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

NR 5 L/E SLAT WAS FOUND DAMAGED DURING EXTENSION. REMOVED VARIABLE CAMBER FLAP IAW AMM 27-81-01-004-001. REMOVED DAMAGED ROTARY ACTUATORS IAW AMM 27-81-07-004-001. REMOVED THE NR 1 PDU IAW AMM 27-81-03. INSTALLED THE NR 1 PDU IAW AMM 27-81-03. LEAK AND OPS CHECKED. INSTALLED THE NR 5 VARIABLE CAMBER FLAP UP TO STEP 5 OF AMM 27-81-02. . COMPLETED AMM 27-81-02 STEPS 5-6-7-8. INSTALLED A SERVICEABLE VARIABLE CAMBER FLAP ROTARY ACTUATORS IAW AMM 27-81-07 TO STEP 6C AND DRIVE SHAFT. OPERATED THE L/E FLAPS IN ALTERNATE & NORMAL MODE. OPS CHECKED GOOD.