Service difficulty report · Warning System · Boeing 747422

Difficulty date
July 2, 2007
Submitted
July 6, 2007
Operation
Air carrier
Aircraft
N121UA
Make and model
Boeing 747422
Aircraft serial
29167
Aircraft time
34,307 hours, 4,189 cycles
Engine
Pwa PW4056
Part
Warning System
Condition
Activated
Location
Cockpit
Stage of operation
AP
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

TOO LOW GEAR WARNING ON APPROACH, GO AROUND PERFORMED. GEAR INDICATIONS WERE NORMAL WITH NO EICAS MESSAGES. [07-27-07] CLEANED & LUBED LANDING GEAR HANDLE. STILL HAD BODY GEAR STEERING MESSAGE. REPLACED LT BODY GEAR PRIMARY LOCK ACTUATOR SWITCH AS PER MM 32-53-16 PG 401 & OPS CHECKED OK.