<< >> NASA ASRS Report 997654, February 2012

The flight crew of a P180 cycled the landing gear several times before obtaining three gear safe lights. They declared a precautionary emergency in order to have equipment standing by for landing.

Attributes
ACN	997654
Time
Date	201202
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Make Model Name	P180 Avanti
Operating Under FAR Part	Part 91
Flight Phase	Initial Approach
Route In Use	Vectors
Flight Plan	IFR
Component
Aircraft Component	Gear Extend/Retract Mechanism
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 60 Flight Crew Total 3500 Flight Crew Type 2500
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

During a visual approach when the landing gear was selected down the nose wheel failed to illuminate a down and locked position light. We requested to continue in the pattern from the tower and leveled at pattern altitude. I tested the lamp circuitry via the lamp test panel and did not get a nose wheel light in either the up or down position. All hydraulic pressures were consistent with a down and locked nose wheel. I recycled the gear three times. On the third time the nose wheel down and locked light illuminated. Had I not received the light so quickly I was prepared to run the abnormal checklist.I advised tower that our problem had been resolved but; at the tower controller's request; we declared an emergency to have the support trucks standing by. Since all indications were normal; we ran the normal before landing checklist with the gear down and locked. We made a normal landing and taxied to parking. I believe the situation was an intermittent mechanical issue. I reported the event to maintenance for investigation and repair.

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Original NASA ASRS Text

Title: The flight crew of a P180 cycled the landing gear several times before obtaining three gear safe lights. They declared a precautionary emergency in order to have equipment standing by for landing.

Narrative: During a visual approach when the landing gear was selected down the nose wheel failed to illuminate a down and locked position light. We requested to continue in the pattern from the Tower and leveled at pattern altitude. I tested the lamp circuitry via the lamp test panel and did not get a nose wheel light in either the up or down position. All hydraulic pressures were consistent with a down and locked nose wheel. I recycled the gear three times. On the third time the nose wheel down and locked light illuminated. Had I not received the light so quickly I was prepared to run the Abnormal Checklist.I advised Tower that our problem had been resolved but; at the Tower Controller's request; we declared an emergency to have the support trucks standing by. Since all indications were normal; we ran the normal Before Landing Checklist with the gear down and locked. We made a normal landing and taxied to parking. I believe the situation was an intermittent mechanical issue. I reported the event to Maintenance for investigation and repair.

Data retrieved from NASA's ASRS site as of July 2013 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.