Pilot Debrief

MOONEY AIRCRAFT CORP. M20K near New Orleans, LA — 2011-04-07

Final reportCEN11LA311
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Date
2011-04-07
Location
New Orleans, LA, USA
Airport
NEW
Aircraft
MOONEY AIRCRAFT CORP. M20K
Registration
N305M
Category
Airplane
Highest injury
None
Fatalities
0
Phase of flight
Initial climb

Probable cause

A loss of electrical and engine power for undetermined reasons.

NTSB narrative

Prior to departure, the pilot was unable to start the engine using the airplane electrical system. The engine was subsequently started with the assistance of a ground power unit; however, the pilot could not get the cockpit lights to work. The battery was charged and the engine was again started with the assistance of a ground power unit. The electrical system appeared to be operating normally and the pilot departed. During initial climb after takeoff, the pilot noticed an overvoltage indication. He informed an air traffic controller and during the return to the departure airport, the avionics began to flicker and the electrical system failed completely. During the approach, the airplane experienced a loss of engine power as the pilot was attempting to manually lower the landing gear. He was unable to reach the airport and subsequently landed in an adjacent lake. The airplane was recovered from the lake about 3 weeks after the accident. A postrecovery examination of the electrical system did not reveal any anomalies consistent with a loss of electrical power. Additionally, no reason for a complete loss of engine power was determined. Operation of the engine ignition system is completely independent of the airplane electrical system.

Analysis

Primary failure mode
Engine power loss
First missed decision gate
Pilot could have aborted takeoff after initial engine issues were noted.

NTSB coding

Evidence available

  • 9 docket documents
View NTSB final reportView NTSB docket

Docket documents9

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