Pilot Debrief

SCHLEICHER ASH26 near Shelbyville, TN — 2010-06-18

Final reportERA10LA325
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Date
2010-06-18
Location
Shelbyville, TN, USA
Aircraft
SCHLEICHER ASH26
Registration
N26EL
Category
Glider
Highest injury
Minor
Fatalities
0
Phase of flight
Initial climb

Probable cause

A complete loss of electrical and engine power over unsuitable terrain due to a cannon plug that became disconnected for undetermined reasons.

NTSB narrative

The pilot departed in the self-launching motorized glider for the local flight. He stated that it was a smooth day with no lift, and he had to use the engine several times in order to stay aloft. While returning to the departure airport, at approximately 1,000 feet, the pilot raised the engine and attempted to start it. He received a battery warning indication in the cockpit and was unable to start the engine with the electrical system. The pilot selected a field for landing, but continued to troubleshoot the engine. The pilot successfully restarted the engine, abandoned the landing approach and flew for an additional few seconds before the engine stopped again and the pilot executed a forced landing to a second field. He stated that he was not properly configured to land and landed hard, which resulted in substantial damage to the glider's fuselage. Examination of the glider revealed that the engine start system and propeller pylon extension system could not be activated due to a dead battery. A charge was applied and subsequent attempts were still unsuccessful. The battery was charged overnight and examination behind the instrument panel the next day revealed a loose cannon plug. The plug was retained in place by two clips, one of which was disconnected. Once the cannon plug was retightened, all systems routed through the panel (fuel pump, propeller pylon extension, engine start) energized immediately and functioned as designed. The cannon plug was difficult to access and the manner in which the plug came loose could not be determined.

Analysis

Primary failure mode
Mechanical failure
First missed decision gate
Pilot could have landed earlier instead of troubleshooting engine issues.

NTSB coding

Evidence available

  • Photos
  • 4 docket documents
View NTSB final reportView NTSB docket

Docket documents4

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