Service difficulty report · Sensor · Bombdr DHC8402

Difficulty date
February 15, 2010
Submitted
February 20, 2010
Operation
Air carrier
Aircraft
N427QX
Make and model
Bombdr DHC8402
Aircraft serial
4156
Aircraft time
7,205 hours, 7,825 cycles
Engine
Pwc PW150A
Part
Sensor
Part number
401020101
Condition
Malfunctioned
Location
Mlg Door
Stage of operation
CR
How discovered
O
Nature of condition
O
Precautionary procedure
O

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

What was found

LT AND RT MAIN GEAR DOORS CYCLED IN CRUISE FL220, 248KTS. CYCLED ONE TIME & TOOK 1-2 SECONDS. SLOWED BELOW 200 KTS , DID CHECK LIST & CONTACTED MX CONTROL. NORMAL GEAR EXTEND SPEED IS BELOW 200 KTS, ALT IS BELOW 185 KTS. CYCLE OCCURD 48 KTS ABOVE NORMAL GEAR OPS SPEED. LANDED WITHOUT INCIDENT AND TOWED OFF RUNWAY. COMPLIED WITH GENERAL VISUAL INSP OF THE MLG & DOORS IAW TASK 05-50-31-210-801. NO DEFECTS NOTED. FERRIED FOR REPAIRS. REPLACED RGDRCL SENSOR IAW 32-61-06-000-802/400-802. ADJ SENSOR TARGET IAW 32-12-01-830-801. OPS TEST GOOD OF MLG PRIMARY EXTENSION & RETRACTION IAW 32-31-00-710-801. RETURNED TO SERVICE.