Service difficulty report · Switch · Boeing 747422

Difficulty date
October 15, 2007
Submitted
October 19, 2007
Operation
Air carrier
Aircraft
N104UA
Make and model
Boeing 747422
Aircraft serial
26902
Aircraft time
40,759 hours, 4,943 cycles
Engine
Pwa PW4056
Part
Switch
Part number
1171188
Condition
Faulty
Location
Mlg Lock
Stage of operation
NR
How discovered
O
Nature of condition
J
Precautionary procedure
O

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

What was found

THE "RIGHT BODY GEAR RIGHT ACTUATOR LOCK SWITCHES DISAGREE" HAS OCCURRED AT LEAST 3 OUT OF LAST 5 FLT. FOUND RT GEAR STEARING ACTUATOR, ALTERNATE INBOARD SWITCH SHOWING UNLOCKED. REPLACED RT BODY LANDING GEAR RT ACTUATOR ALTERNATE SWITCH IAW MM 32-53-16. AC OK FOR SERVICE.