Service difficulty report · Proximity Switch · Boeing 747230B

Difficulty date
January 7, 2006
Submitted
January 27, 2006
Operation
Air carrier
Aircraft
N509MC
Make and model
Boeing 747230B
Aircraft serial
21221
Aircraft time
115,200 hours, 21,931 cycles
Part
Proximity Switch
Part number
81020402
Condition
Failed
Location
Landing Gear
Stage of operation
CL
How discovered
O
Nature of condition
N
Precautionary procedure
K

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

What was found

FLIGHT CREW REPORTED AFTER TAKEOFF, GROUND SAFE RELAY LIGHT CAME ON. ALTERNATE PROCEDURE ACCOMPLISHED. AUTO PRESS CONTROLLER NOT OPERATING NORMALLY, AURAL WARNING COULD NOT BE SILENCED. REPLACED LT BODY GEAR SWITCH AND TARGET. REPLACED LT WING GEAR ALT TILT SWITCH PER MM 32-61-00. ACCOMPLISHED GEAR SWING IAW MM 32-61-07. ALL OPS NORMAL.