Boeing landing procedures

From:         "Steven J. Leighton" <>
Organization: PIPEX news server (posting doesn't reflect the views of PIPEX)
Date:         15 Apr 95 11:38:22 
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I am currently undertaking a study into the accuracy of aircraft
landing systems. As part of the study ILS, MLS and DGPS data recorded
on board a 767 is being investigated.

I have been led to believe that for the final 200 feet before
touchdown Boeing aircraft use the INS system for landing as opposed
to ILS alone. Could someone please clarify if this is truly the case.

Many thanks in advance,

Steven J. Leighton