Service difficulty report · Uplock Switch · Cessna 560CESSNA

Difficulty date
December 22, 2006
Submitted
December 27, 2006
Operation
Air carrier
Aircraft
N332QS
Make and model
Cessna 560CESSNA
Aircraft serial
5600523
Aircraft time
6,819 hours, 5,705 cycles
Engine
Pwa JT15D5
Part
Uplock Switch
Condition
Loose
Location
Lt Mlg
Stage of operation
CL
How discovered
O
Nature of condition
O
Precautionary procedure
A

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

What was found

AFTER DEPARTURE THE GEAR HANDLE WAS RAISED, HOWEVER THE RED "GEAR UNSAFE AND "HYD PRESS' REMAINED ILLUMINATED. GEAR APPEARED TO EXTEND WITH NORMAL INDICATIONS. GEAR WAS BLOWN DOWN AS A SAFTY MEASURE. JACKED AIRCRAFT. VISUALLY INSPECTED. FOUND NOSE & LT UPLOCK SWITCHES LOOSE. FOUND SMALL HYDRAULIC LEAK ON LT & RT MLG ACTUATORS AND LT UPLOCK ACTUATOR. PERFORM GEAR SWINGS AND VERIFIED HYDRAULIC LEAKS ARE WITHIN M/M 560 20-10-06. TIGHTENED AND SAFETIED LOOSE SWITCES AND SERVICED N2 RESERVOIR IAW MM 560 12-13-01. CYCLED GEAR NUMEROUS TIMES, CHECK GOOD. SERVICED HYD MM 12-12-01