NTSB -- NTSB Safety Recommendations A-11-32 through -34

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NTSB SAFETY RECOMMENDATION

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National Transportation Safety Board

Washington, DC 20594

April 20, 2011

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NTSB Safety Recommendations A-11-32 through -34

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The NTSB makes the following recommendations to the Federal Aviation Administration:

Establish Standard Instrument Departure procedures that provide transition routes and minimum

instrument flight rules altitude information for aircraft cleared over commonly used navigational fixes

from Jackson Hole Airport and similarly situated airports. (A-11-32)

Modify en route automation modernization software such that en route minimum safe altitude

warning alerts are provided for aircraft in coast track status that are receiving automatic position

updates. (A-11-33)

Modify en route automation modernization software such that cautionary warnings are provided to

controllers when an aircraft is predicted to enter a minimum instrument flight rules altitude (MIA)

polygon below the MIA. (A-11-34)

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The complete recommendation letter is available on the Web

at the URL indicated above.

The letter is in the Portable Document Format (PDF) and can

be read using the Acrobat Reader 5.0 or later from Adobe

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An archive of recommendation letters is available at

http://www.ntsb.gov/recs/letters/letters.htm.

Electronic versions of letters may or may not include

enclosures; however, related publications, accident

briefs, and aviation accident synopses may be found

on the NTSB website.

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