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Forum: Tech Log

2nd Jul 2007, 02:10

Replies: 8

Estimated Position Error.....

Views: 7,952

Posted By gearpins

flt detent, thanks, that cleared it up a bit for...

flt detent, thanks, that cleared it up a bit for me.
I was wondering if .28 nm was also a regulatory requirement?:)

Forum: Tech Log

26th Jun 2007, 22:00

Replies: 8

Estimated Position Error.....

Views: 7,952

Posted By gearpins

just wondering..

All I am trying to do is figure why is the value 0.28?? and not say 2 or some other convenient number. I am sure its for a good reason. just trying to get to the history behind it...
Any Navigation...

Forum: Tech Log

25th Jun 2007, 12:19

Replies: 8

Estimated Position Error.....

Views: 7,952

Posted By gearpins

sorry about that

OK here is an extract from FCOM A320

CURRENT NAV MODE
EPE (RATE or THRESHOLD)
REMARK

IRS/GPS

(FOM² + 100²) in meters

Forum: Tech Log

25th Jun 2007, 05:41

Replies: 8

Estimated Position Error.....

Views: 7,952

Posted By gearpins

standing by

anyone please?:)

Forum: Tech Log

23rd Jun 2007, 13:20

Replies: 8

Estimated Position Error.....

Views: 7,952

Posted By gearpins

Estimated Position Error.....

Hello every one ,
Reading my books on navigation and trying to figure out how did they (whoever they are) arrive at a figure of 0.28nm as a threshold for estimate position error ???
can anyone...

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