Cessna 210 pilot declared an emergency and diverted when the nose gear failed to extend.

Attributes
ACN	833591
Time
Date	200905
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Cessna 210 Centurion / Turbo Centurion 210C 210D
Operating Under FAR Part	Part 91
Flight Phase	Final Approach Landing
Route In Use	Visual Approach
Flight Plan	None
Component
Aircraft Component	Gear Extend/Retract Mechanism
Person 1
Function	Single Pilot
Experience	Flight Crew Last 90 Days 225 Flight Crew Total 12000 Flight Crew Type 78
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

While in the traffic pattern for landing; upon putting the retractable landing gear lever in the down position; the landing gear indicator failed to show down and locked. After following the 'landing gear -- emergency operation' procedure in the aircraft owner's manual; the landing gear indicator continued to fail to show down and locked. I elected to divert. I declared an emergency; and we followed the 'landing with defective now gear' checklist in the aom. I landed the airplane with the two main gears down and the nose gear retracted.

Original NASA ASRS Text

Title: Cessna 210 pilot declared an emergency and diverted when the nose gear failed to extend.

Narrative: While in the traffic pattern for landing; upon putting the retractable landing gear lever in the down position; the landing gear indicator failed to show down and locked. After following the 'Landing Gear -- Emergency Operation' procedure in the Aircraft Owner's Manual; the landing gear indicator continued to fail to show down and locked. I elected to divert. I declared an emergency; and we followed the 'Landing with Defective Now Gear' checklist in the AOM. I landed the airplane with the two main gears down and the nose gear retracted.

Data retrieved from NASA's ASRS site as of April 2012 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.