A C210's landing gear would not extend. The main gear went down after pouring water in the hydraulic...

Attributes
ACN	795792
Time
Date	200807
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	msl single value : 4000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Cessna 210 Centurion / Turbo Centurion 210C 210D
Operating Under FAR Part	Part 91
Flight Phase	descent : approach landing : roll
Flight Plan	None
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : private
Experience	flight time last 90 days : 50 flight time total : 4700 flight time type : 3700
ASRS Report	795792
Events
Anomaly	aircraft equipment problem : critical other anomaly other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

I was approaching ZZZ for a fuel stop. As I prepared to land and extended the gear handle the gear did not come down and the circuit breaker popped out. I flew a short distance north of the airport where there was flat desert land and no residences in case I had to make an off-airport landing. I started the emergency extension procedure but it was unsuccessful. Fearing a possible hydraulic fluid leak I asked the passenger to pour some water into the neck of the reservoir in hopes that the gear would come down. The mains came down but were not all the way locked. More water was placed into the reservoir. The main gear locked down and I continued to pump the emergency gear extension handle. The handle froze up and would not move up and down freely and while I was looking under beneath the handle to see why I became distraction and the aircraft impacted the ground. Luckily there was virtually no damage other than to the nose gear and a propeller strike. There was no damage to the main landing gear and; due to the flat sandy terrain there was no damage to the fuselage or other structural components of the airplane except some dents and scratches in the cowl. There was no injury to myself or my 1 passenger not even scratches or bruises.

Original NASA ASRS Text

Title: A C210'S LNDG GEAR WOULD NOT EXTEND. THE MAIN GEAR WENT DOWN AFTER POURING WATER IN THE HYD RESERVOIR. WHILE TROUBLESHOOTING THE NOSE GEAR THE ACFT IMPACTED THE GND.

Narrative: I WAS APCHING ZZZ FOR A FUEL STOP. AS I PREPARED TO LAND AND EXTENDED THE GEAR HANDLE THE GEAR DID NOT COME DOWN AND THE CIRCUIT BREAKER POPPED OUT. I FLEW A SHORT DISTANCE N OF THE ARPT WHERE THERE WAS FLAT DESERT LAND AND NO RESIDENCES IN CASE I HAD TO MAKE AN OFF-ARPT LNDG. I STARTED THE EMER EXTENSION PROC BUT IT WAS UNSUCCESSFUL. FEARING A POSSIBLE HYD FLUID LEAK I ASKED THE PAX TO POUR SOME WATER INTO THE NECK OF THE RESERVOIR IN HOPES THAT THE GEAR WOULD COME DOWN. THE MAINS CAME DOWN BUT WERE NOT ALL THE WAY LOCKED. MORE WATER WAS PLACED INTO THE RESERVOIR. THE MAIN GEAR LOCKED DOWN AND I CONTINUED TO PUMP THE EMER GEAR EXTENSION HANDLE. THE HANDLE FROZE UP AND WOULD NOT MOVE UP AND DOWN FREELY AND WHILE I WAS LOOKING UNDER BENEATH THE HANDLE TO SEE WHY I BECAME DISTR AND THE ACFT IMPACTED THE GND. LUCKILY THERE WAS VIRTUALLY NO DAMAGE OTHER THAN TO THE NOSE GEAR AND A PROP STRIKE. THERE WAS NO DAMAGE TO THE MAIN LNDG GEAR AND; DUE TO THE FLAT SANDY TERRAIN THERE WAS NO DAMAGE TO THE FUSELAGE OR OTHER STRUCTURAL COMPONENTS OF THE AIRPLANE EXCEPT SOME DENTS AND SCRATCHES IN THE COWL. THERE WAS NO INJURY TO MYSELF OR MY 1 PAX NOT EVEN SCRATCHES OR BRUISES.

Data retrieved from NASA's ASRS site as of May 2009 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.

A C210's landing gear would not extend. The main gear went down after pouring water in the hydraulic reservoir. While troubleshooting the nose gear the aircraft impacted the ground.