Service difficulty report · Safety Valve · Boeing 777222

Difficulty date
May 11, 2010
Submitted
May 13, 2010
Operation
Air carrier
Aircraft
N225UA
Make and model
Boeing 777222
Aircraft serial
30554
Aircraft time
33,672 hours, 4,139 cycles
Engine
Pwa PW40903
Part
Safety Valve
Part number
3910032104
Part serial
3
Condition
No Test
Location
Nlg
Stage of operation
IN
How discovered
C
Nature of condition
L
Precautionary procedure
K

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

What was found

NLG DOOR UNSAFE LIGHT DOES NOT COME ON WHEN PUSHING AND HOLDING THE PRESS TO TEST BUTTON. FOUND GEAR UNSAFE LIGHTS CB TRIPPED. RESET BUT TRIPPED AGAIN. ISOLATED PROBLEM TO NOSE GEAR DOOR RELEASE AND SAFETY VALVE. CONNECTOR AT NOSE GEAR DOOR RELEASE -SAFETY VALVE IS RECONNECTED FOR PROTECTION AND CB P31 0 J4- LG DOOR CLOSE GROUND ACCESS IND - IS IN POPPED STATE. REPLACED NLG DOOR RELEASE - SAFETY VALVE MODULE. CHECKS GOOD.