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To: Petz who wrote (1994)	12/16/1997 7:34:00 PM
From: arun gera	Read Replies (2) \| Respond to of 3506

EGPWS - GPS based? Actually, I am still trying to figure out whether GPS is a requirement or not. It is not necessary, because Allied Signals EGPWS has been tested with INS. However, the dollar numbers being floated around ($100,000 per aircraft) are likely to include GPS. Allied Signal got $20 million for adding EGPWS to about 650 American Airline aircrafts. that only works out to about $30,000 per plane. Remember that it cost $45 million for American to equip their planes with GPS. Arun