Service difficulty report · Downlock Switch · Cessna 510

Difficulty date
February 3, 2016
Submitted
February 5, 2016
Operation
Air carrier
Aircraft
N910GF
Make and model
Cessna 510
Aircraft serial
5100425
Aircraft time
1,761 hours, 2,401 cycles
Part
Downlock Switch
Part number
65430087
Condition
Out Of Tolerance
Location
Nlg
Part time
1,761 hours, 2,401 cycles
Stage of operation
AP
How discovered
O
Nature of condition
P
Precautionary procedure
L

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

What was found

NORMAL FLIGHT, GEAR RETRACTED NORMALLY UPON DEPARTURE. UPON ARRIVAL ESTABLISHED IN THE DOWNWIND SLOWED BELOW 185 & PUT FLAPS TO TO & APP ABEAM THE NRS, LOWERED THE GEAR & ONLY GOT DOWN & LOCKED INDICATIONS FOR THE MAINS, NO NOSE WHEEL. BROKE OUT OF THE PATTERN & CYCLED THE GEAR WITH THE SAME INDICATIONS & ALSO WIGGLED THE HANDLE TO SEE IF I COULD MAKE A CONNECTION. CHECKED THE ANNUNCIATORS & ALL THE LIGHTS WERE WORKING. BRIEFED THE CREW ON WHAT WAS GOING ON, THEN WENT TO THE EMER & ABNORMAL CHECKLIST. PERFORMED THE CHECKLIST & EMER EXTEND THE GEAR. WHEN THE EMER PROCEDURE FAILED TO GIVE ME THREE DOWN & LOCKED INDICATIONS THE DECISION WAS MADE TO RETURN. BRIEFED THE CREW ON EMER EVACUATION. REQUESTED A FLYBY THE TOWER TO GET A VISUAL INDICATION IF THE GEAR WAS DOWN. PERFORMED A LOW PASS DOWN RNWY 25 DUE TO THE WINDS BEING 270/21G29. REPORT FROM THE TOWER WAS THAT THE GEAR APPEARED TO BE DOWN, THEN ENTERED A LONG DOWNWIND FOR RNWY 21 WHICH HAS 10502 FT OF RNWY. UPON TOUCHDOWN THE NOSE WHEEL LG INDICATOR TURNED GREEN.

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