Service difficulty report · Uplock Switch · Cessna 560CESSNA

Difficulty date
August 20, 2006
Submitted
August 25, 2006
Operation
Air carrier
Aircraft
N376QS
Make and model
Cessna 560CESSNA
Aircraft serial
5600276
Aircraft time
9,137 hours, 8,334 cycles
Part
Uplock Switch
Part number
41EN496
Condition
Defective
Location
Nlg
Stage of operation
CL
How discovered
O
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

LEFT MAIN GEAR WOULD NOT RETRACT AFTER T/O LEFT GEAR LOCK LIGHT AND GEAR UNSAFE. EXTENDED GEAR AND HAD THREE GREEN DOWN AND LOCKED. RANG OUT UPLOCK SWITCH NLG HIGH RESISTANCE THROUGH CLOSED CONTACTS OF SWITCH AS WELL THROUGH OPEN CONTACTS ALSO CHECKED WOW SWITCH AND FOUND DEFECTIVE. REPLACED UPLOCK AND WOW SWITCH AND ACCOMPLISHED SEVERAL OPS CHECKS OF LANDING GEAR NO DEFECTS WERE NOTED PER 560 MM 32-61-00.