Service difficulty report · Switch · Beech 1900C

Difficulty date
January 22, 2018
Submitted
January 26, 2018
Operation
Air carrier
Aircraft
N133BA
Make and model
Beech 1900C
Aircraft serial
UB54
Aircraft time
37,413 hours, 47,177 cycles
Part
Switch
Part number
602EN16
Condition
Failed
Location
Nlg
Part time
12,462 hours, 23,588 cycles
Stage of operation
AP
How discovered
O
Nature of condition
J
Precautionary procedure
O

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

What was found

LANDING GEAR FAILED TO FULLY EXTEND WHEN SELECTED. THE GEAR WAS PUMPED DOWN MANUALLY. THE LANDING GEAR CONTROL CIRCUIT WAS FOUND OPEN THROUGH THE SWITCH, WHICH DETECTS THAT THE NOSE ACTUATOR IS IN THE EXTENDED TO THE DOWN POSITION. WHEN THIS SWITCH FAILED, IT TURNED OFF ELECTRICAL POWER TO THE HYDRAULIC POWER PACK.

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