C310 has engine failures overwater. Aircraft ditched.

Attributes
ACN	304801
Time
Date	199505
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : clm
State Reference	WA
Altitude	msl bound lower : 1000 msl bound upper : 1000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : cvg
Operator	general aviation : personal
Make Model Name	Cessna 310/T310C
Operating Under FAR Part	Part 91
Flight Phase	cruise other
Flight Plan	None
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : atp
Experience	flight time last 90 days : 30 flight time total : 8950 flight time type : 4500
ASRS Report	304804
Person 2
Affiliation	Other
Function	observation : passenger
Qualification	other other : other
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : declared emergency other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

While flying at about 1000 ft or less over water, the right engine developed strong vibration and was shut down. Shortly thereafter the left engine developed some vibration and sufficient power loss to require a controled ditching. The pilot and both passenger evacuate/evacuationed the aircraft (which subsequently sank) and were picked up by a motor launch whose sole occupant had witnessed some if not all of the ditching. No other aircraft was involved in this event. Callback conversation with reporter revealed the following information: reporter states the aircraft was a C310K. He was using 121.5 for 2 mayday calls which were never heard. Most people in the area use a marine frequency for emergency notice. The boat which saw the ditching used the marine frequency and notified the coast guard. They arrived quite a while after the boat picked up the reporter and passenger. All were hospitalized and treated for hypothermia. Reporter has filed a reporter with the NTSB and the incident is being investigated by them at this time.

Original NASA ASRS Text

Title: C310 HAS ENG FAILURES OVERWATER. ACFT DITCHED.

Narrative: WHILE FLYING AT ABOUT 1000 FT OR LESS OVER WATER, THE R ENG DEVELOPED STRONG VIBRATION AND WAS SHUT DOWN. SHORTLY THEREAFTER THE L ENG DEVELOPED SOME VIBRATION AND SUFFICIENT PWR LOSS TO REQUIRE A CTLED DITCHING. THE PLT AND BOTH PAX EVACED THE ACFT (WHICH SUBSEQUENTLY SANK) AND WERE PICKED UP BY A MOTOR LAUNCH WHOSE SOLE OCCUPANT HAD WITNESSED SOME IF NOT ALL OF THE DITCHING. NO OTHER ACFT WAS INVOLVED IN THIS EVENT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATES THE ACFT WAS A C310K. HE WAS USING 121.5 FOR 2 MAYDAY CALLS WHICH WERE NEVER HEARD. MOST PEOPLE IN THE AREA USE A MARINE FREQ FOR EMER NOTICE. THE BOAT WHICH SAW THE DITCHING USED THE MARINE FREQ AND NOTIFIED THE COAST GUARD. THEY ARRIVED QUITE A WHILE AFTER THE BOAT PICKED UP THE RPTR AND PAX. ALL WERE HOSPITALIZED AND TREATED FOR HYPOTHERMIA. RPTR HAS FILED A RPTR WITH THE NTSB AND THE INCIDENT IS BEING INVESTIGATED BY THEM AT THIS TIME.

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.