Service difficulty report · Actuator · Boeing 747273C

Difficulty date
October 19, 2011
Submitted
October 21, 2011
Operation
Air carrier
Aircraft
N470EV
Make and model
Boeing 747273C
Aircraft serial
20653
Aircraft time
109,883 hours
Part
Actuator
Condition
Contaminated
Location
Landing Gear
Stage of operation
CR
How discovered
O
Nature of condition
J
Precautionary procedure
J, A

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

What was found

(SECOND FLIGHT) AFTER GEAR UP, MOVING GEAR LEVER TO OFF RESULTED IN GEAR LEVER LATCH IN VIEW. F/E ANNUNCIATOR PANEL SHOWED RIGHT WING TILT LIGHT ILLUMINATED WITH BOTH PRIMARY AND ALTERNATE BUTTONS DEPRESSED. CYCLED GEAR HAD NORMAL INDICATION UNTIL GEAR UP AND SAME INDICATIONS. DIVERTED TO JFK AND DUMPED FUEL, LAND WITHOUT FURTHER INCIDENT. TARGETED RIGHT WING TILT SWITCHES, PRIMARY AND ALTERNATE. WHEN SWITCHES WERE TARGETED THE PRIMARY AND ALTERNATE LIGHTS WERE EXTINGUSHED. BLED RT WING GEAR TILT ACTUATOR PER MM 32-11-20. PERFORMED INSPECTION OF TILT INDICATION SYSTEM IAW MM 33-61-00, NO DEFECTS NOTED. DURING BLEED OF TILT ACTUATOR FOUND AIR IN SYSTEM BLED ACTUATOR IAW 32-11-20.