NTSB Safety Recommendations A-10-60 through -61

[NTSB Press Releases <NTSBPressReleases@xxxxxxxx>]

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                   NTSB SAFETY RECOMMENDATION
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National Transportation Safety Board
Washington, DC 20594

April 14, 2010

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NTSB Safety Recommendations A-10-60 through -61
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The National Transportation Safety Board recommends that the 
Federal Aviation Administration:

Require Honeywell to revise the software logic within the MK 
XXII Enhanced Ground Proximity Warning System so that a 
fault in the radio altimeter system would not prevent the 
look-ahead feature from functioning without notification to 
the pilot. (A-10-60) 

Once Honeywell revises the MK XXII Enhanced Ground Proximity 
Warning System (EGPWS) software logic (as described in 
Safety Recommendation A-10-60), require all operators using 
the Honeywell MK XXII EGPWS to install the revised software. 
(A-10-61)


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http://www.ntsb.gov/Recs/letters/2010/A-10-060-061.pdf

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