Service difficulty report · Switch · Piper PA44180

Difficulty date
February 19, 1999
Submitted
March 26, 2000
Operation
General aviation
Make and model
Piper PA44180
Part
Switch
Part number
89291003
Condition
Intermittent
Location
Mlg
Part time
536 hours
Stage of operation
AP
Nature of condition
N
Precautionary procedure
L

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

What was found

(CAN) AFTER UNDERCARRIAGE SELECTED DOWN, THE LEFT MAIN GEAR SAFE LIGHT DID NOT COME ON, BUT THE GEAR UNSAFE LIGHT DID GO OUT. GEAR CYCLED AND THE SAFE LIGHT ON EVENTUALLY. INVESTIGATION DETERMINED THAT THE CONTACTS FOR THE GEAR SAFE LIGHT WERE DEFECTIVE. THIS SWITCH HAS THREE SETS OF CONTACTS, ONE FOR THE HYDRAULIC PUMP, ONE FOR GEAR UNSAFE, AND ONE FOR GEAR SAFE LIGHT.

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