SDR UPS402089

Service difficulty report · Warning Ind · Boeing 747121

Difficulty date
January 21, 1995
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N691UP
Make and model
Boeing 747121
Aircraft serial
19641
Part
Warning Ind
Part number
NAS5137
Condition
Malfunction
Location
Nlg
Stage of operation
AP
Nature of condition
N
Precautionary procedure
O

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

What was found

PILOT REPORTED ON GEAR EXTENTION WITH PRIMARY NOSE GEAR SENSOR INOP. THE GEAR INDICATES UNSAFE ON THE PILOT'S PANEL, AND THE LANDING GEAR WARNING HORN WILL NOT SILENCE UNTIL BREAKER IS PULLED. ALT SENSOR INDICATES SAFE IN F/E PANEL. INSTALLED REPAIR IAW MM 32-61-15, P/N 69B47531-3, P/N 69B47530-7.