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Old September 24th 03, 09:59 PM
Dave Butler
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Casey Wilson wrote:
It just occurred to me that when I list a Radial/Distance point in
DUATS as part of a route, DUATS converts it to Lat/Lon. Maybe that's a hint
that Lat/Lon is preferred.


....to which snowbird replied:

Hmmmm...we use DUATS to file all the time, and have never observed this. Can
you give more details? Were you using duats on the web or through a different
program? What format did you use to enter the VOR radial/distance?


.... and then paul k sanchez said:
snip

Here is the route that we file about 1 x week every monday morning. On
www.enflight.com we use the "user selected routing", and insert a route
selection of FXE ARKES PHK *J CRG *G LBE. Enflight.com output is like this:

Flight Plan FXE - LBE
From: FXE -- Fort Lauderdale FL (Fort Lauderdale Executive)
To: LBE -- Latrobe PA (Arnold Palmer Regional)
Alt.: FL290
Time: Wed Sep 24 04:22 (UTC)

Routing options selected: Automatic jet route, Great circle.
Flight plan route:
ARKES PHK J53 CRG SSI090004 SVN270003 EDS270002 MMT CTF270019 CLT090020
GSO270019 PSK120028 ROA270001 LWB120020 EKN120018 MGW120013 IHD300006
Flight totals: fuel: 172 gallons, time: 3:26, distance 869.7 nm.

Ident Type/Morse Code | | Fuel
Name or Fix/radial/dist | | Time
Latitude Longitude Alt. | Route Mag KTS Fuel | Dist
---+--------+---------+-----| Winds Crs TAS Time |------
1. FXE Apt. | Temp Hdg GS Dist | 0.0
Fort Lauderdale FL (For |--------+----+---+------| 0:00
26:11.84 80:10.24 0 | Direct 11.1 | 870
---+--------+---------+-----| 050/4 333 166 0:10 |------
2. ARKES Int. | +1 C 334 165 27 | 11.1
PBIr254 VKZr348/51 |--------+----+---+------| 0:10
26:34.63 80:25.06 146 | Direct 6.3 | 843


snip

NOTE: fuel calculations do not include required reserves.
Flight totals: fuel: 172 gallons, time: 3:26, distance 869.7 nm.
Average groundspeed 254 knots.
Great circle distance is 845.6 nm -- this route is 3% longer.

This route (and filing) works very well. Miami Center (ZMA) has no concept of
direct outside of their airspace. Jacksonville (ZJX) gives direct to almost
anywhere as long as it is not in Miami Center (ZMA) airspace.


Was it your intent to respond to Snowbird's request for for an example? I think
she was asking for an example of how "DUATS converts it to Lat/Lon" [for flight
plan filing purposes]. Its' true that in your example the radial/distance
entries are converted to lat/lon, but the part that ATC sees (which I think was
the focus of the discussion) is just the radial/distances like:

ARKES PHK J53 CRG SSI090004 SVN270003 EDS270002 MMT CTF270019 CLT090020
GSO270019 PSK120028 ROA270001 LWB120020 EKN120018 MGW120013 IHD300006,

The converted lat/lons appear only in the flight log DUAT spits out for your
convenience, and are not part of the ATC flight plan. If this conversion is to
be taken as a hint that lat/lon is preferred [for flight plan filing purposes],
the lat/lons would have to appear in the flight plan.

Remove SHIRT to reply directly.

Dave