Amphibian GA small aircraft flipped over when landed on grass without nose gear extended.

Attributes
ACN	176194
Time
Date	199104
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : ays
State Reference	GA
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Small Aircraft
Flight Phase	landing other
Flight Plan	VFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : commercial pilot : instrument
Experience	flight time last 90 days : 60 flight time total : 6000
ASRS Report	176194
Events
Anomaly	aircraft equipment problem : critical other anomaly
Independent Detector	other flight crewa
Resolutory Action	none taken : unable
Consequence	other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Approached airport for landing to refuel. Called unicom. Reduced speed and tried to lower gear. Main gear extended. Front gear could not be extended. Could not retract main gear. Attempted landing on grass with main gear down. Front of floats dug into earth as rollout continued until aircraft came to rest upside down. After incident I talked to manufacturer of alternator and found out alternator required a speed of 65 mph to operate. Battery also failed to operate hydraulic pump to gear. Suggest: backup mechanic hand pumps in system to lower or retract gear.

Original NASA ASRS Text

Title: AMPHIBIAN GA SMA FLIPPED OVER WHEN LANDED ON GRASS WITHOUT NOSE GEAR EXTENDED.

Narrative: APCHED ARPT FOR LNDG TO REFUEL. CALLED UNICOM. REDUCED SPD AND TRIED TO LOWER GEAR. MAIN GEAR EXTENDED. FRONT GEAR COULD NOT BE EXTENDED. COULD NOT RETRACT MAIN GEAR. ATTEMPTED LNDG ON GRASS WITH MAIN GEAR DOWN. FRONT OF FLOATS DUG INTO EARTH AS ROLLOUT CONTINUED UNTIL ACFT CAME TO REST UPSIDE DOWN. AFTER INCIDENT I TALKED TO MANUFACTURER OF ALTERNATOR AND FOUND OUT ALTERNATOR REQUIRED A SPD OF 65 MPH TO OPERATE. BATTERY ALSO FAILED TO OPERATE HYD PUMP TO GEAR. SUGGEST: BACKUP MECH HAND PUMPS IN SYS TO LOWER OR RETRACT GEAR.

Data retrieved from NASA's ASRS site as of July 2007 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.