Tuesday 2 November 2010

Shuttle Managers Assess Main Engine Controller Issue

Tue, 02 Nov 2010 12:37:49 -0500

During space shuttle main engine checkouts, the backup controller for engine 3 did not turn on as expected. There appeared to be an issue with one of three power phases, which was narrowed down to either a cockpit circuit breaker or switch that provides power. The circuit breaker and switch were turned off and on, restoring power.

Engineers continue to analyze data that showed voltage irregularities and will meet this afternoon to review their data. The Mission Management Team will convene at 3 p.m. EDT to assess the issue.

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