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Pilot experiences density altitude related reduced engine performance departing tvl, resulting in controlled flight toward terrain.
| Attributes | |
| ACN | 471316 |
| Time | |
| Date | 200004 |
| Day | Wed |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : tvl.airport |
| State Reference | CA |
| Altitude | agl single value : 20 msl single value : 6220 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : tvl.tower |
| Operator | general aviation : personal |
| Make Model Name | Cessna 310/T310C |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : initial climbout : takeoff |
| Person 1 | |
| Affiliation | other |
| Function | flight crew : single pilot |
| Qualification | pilot : private pilot : multi engine |
| ASRS Report | 471316 |
| Person 2 | |
| Affiliation | other |
| Function | controller : local |
| Qualification | controller : non radar |
| Events | |
| Anomaly | aircraft equipment problem : critical non adherence : published procedure other anomaly other other spatial deviation |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : overcame equipment problem other |
| Consequence | other |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
Narrative:
I took off from my home airport (tul) in south lake tahoe, ca, in my 1960 C310D. Shortly after takeoff, the right engine seemed to have lost partial power. The engine did not sputter or make any odd noise and did not quit entirely. I proceeded over the lake, where in attempt to build airspeed in ground effect I came 20 ft over the water. The lake is 6200 ft and the airplane would not perform on 1 engine if it were to quit. I was at no time less than 1/2 mi from any boat or persons. I did see people on the shore and thought if I needed to, I could ditch and would be seen and rescued right away, that is why I stayed a safe distance from the shore and spectators. The engine regained power after a few passes, so I was able to climb to a safe altitude and get back to the airport. The engine was inspected and ran fine later. Density altitude and being too rich were probable causes.
Original NASA ASRS Text
Title: PLT EXPERIENCES DENSITY ALTITUDE RELATED REDUCED ENG PERFORMANCE DEPARTING TVL, RESULTING IN CONTROLLED FLIGHT TOWARD TERRAIN.
Narrative: I TOOK OFF FROM MY HOME ARPT (TUL) IN S LAKE TAHOE, CA, IN MY 1960 C310D. SHORTLY AFTER TKOF, THE R ENG SEEMED TO HAVE LOST PARTIAL PWR. THE ENG DID NOT SPUTTER OR MAKE ANY ODD NOISE AND DID NOT QUIT ENTIRELY. I PROCEEDED OVER THE LAKE, WHERE IN ATTEMPT TO BUILD AIRSPD IN GND EFFECT I CAME 20 FT OVER THE WATER. THE LAKE IS 6200 FT AND THE AIRPLANE WOULD NOT PERFORM ON 1 ENG IF IT WERE TO QUIT. I WAS AT NO TIME LESS THAN 1/2 MI FROM ANY BOAT OR PERSONS. I DID SEE PEOPLE ON THE SHORE AND THOUGHT IF I NEEDED TO, I COULD DITCH AND WOULD BE SEEN AND RESCUED RIGHT AWAY, THAT IS WHY I STAYED A SAFE DISTANCE FROM THE SHORE AND SPECTATORS. THE ENG REGAINED PWR AFTER A FEW PASSES, SO I WAS ABLE TO CLB TO A SAFE ALT AND GET BACK TO THE ARPT. THE ENG WAS INSPECTED AND RAN FINE LATER. DENSITY ALT AND BEING TOO RICH WERE PROBABLE CAUSES.
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.