Narrative:

I descended the flight of two below the MVA. I gave them a block of 200 to 300 ft. There was a low altitude alert and I advised the aircraft of the current altimeter and alert. I had the mvsa map to low and did not notice the MVA.

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Original NASA ASRS Text

Title: An I90 Controller reported issuing a flight of two military aircraft clearance to cruise below the MVA because he had his MVSA map set to low and did not see the MVA.

Narrative: I descended the flight of two below the MVA. I gave them a block of 200 to 300 FT. There was a low altitude alert and I advised the aircraft of the current altimeter and alert. I had the MVSA map to low and did not notice the MVA.

Data retrieved from NASA's ASRS site as of July 2013 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.