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- DAVID H. BAILEY
- 26 Seminole Drive
- Nashua NH 03063
- 603-883-2448
- April 28, 1991
-
-
- Welcome to the Dallas-Fort Worth Terminal Area Chart Scenery File!
-
- WHAT THIS IS:
-
- With the DALLASTX.SC1 file in your FS4 directory, and the AUTOMATIC
- SCENERY LOAD option under MENU 1, OPTION J SCENERY DESIGN, you can fly
- to all of the public airports listed in the AIRPORT/FACILITY DIRECTORY
- SC which are also within the 30nm radius on the DALLAS-FT. WORTH VFR
- TERMINAL AREA CHART. There are two airports included which are just
- outside the 30nm circle, but are on the chart -- TERRELL to the east and
- BOURLAND to the southwest.
-
-
- COMPANION FILES:
-
- Also included are these other files:
- DALLASTX.DOC ASCII PRINTOUT OF ALL THE DATA.
- DLSTXMOD.DOC ASCII PRINTOUT ON ONE PAGE OF THE NORTH AND
- EAST COORDINATES FOR EACH AIRPORT, ALONG WITH
- HEADING AND ELEVATION FOR USE WITH MENU 5,
- OPTION A, TO PUT THE AIRPLANE AT EACH
- AIRPORT.
- DALLASTX.DBF DbaseIII FORMAT OF DALLASTX.DOC.
-
- The .DOC files are straight ASCII files which can be printed using the
- command: COPY [filespec].DOC PRN.
-
- The .DBF file is a DbaseIII format file of all the data from which the
- airports were designed. This is not necessary to use DALLASTX.SC1, but
- if you wish to print out different reports to assist in using the file,
- there it is. This format can be imported into Paradox, Reflex2, PCFile,
- and others, which is why it is in this format -- the original data was
- entered with Reflex2.
-
-
- REQUIREMENTS:
-
- MICROSOFT FLIGHT SIMULATOR 4 WITH AIRCRAFT & SCENERY DESIGNER
-
- In order for this file to work, you must also request 20,000 bytes as the
- static memory file size in option 0-SETUP CONFIGURATION of SCENERY
- DESIGNER. You may request more, but this file is 19,995, so 20K is all
- that is required. If you are changing the Static Scenery Memory
- Allocation, you must first SAVE the file, then exit FS4 and restart the
- program. At this point the larger memory allocation is active.
- REMEMBER THAT THE LARGER MEMORY ALLOCATION YOU REQUEST MEANS THAT SOME
- FEATURES OF THE PROGRAM MAY NOT WORK. Using QEMM from Quarterdeck to
- load TSRs and DRIVERS in HIMEM opens a lot of the DOS 640K area, allowing
- for larger memory allocation requests and still have all the features
- of FS4 with A&SD work properly.
- SUGGESTIONS:
-
- U.S. TERMINAL PROCEDURES VOL. SC-2 (TX).
- DALLAS-FT WORTH TERMINAL AREA CHART
- AIRPORT/FACILITY DIRECTORY VOL. SC
-
- These are all publications of the National Oceanic and Atmospheric
- Administration, and include all the necessary information for VFR and
- IFR flight within this scenery file area. The Airport/Facility
- directory is not really essential, since all the ILS frequencies and
- fixes are shown in the Terminal Procedures book. Using these
- publications really makes flying in this program as harrowing an
- experience in clouds as it is in real life, but it also makes it
- possible. Trying to switch frequencies on the nav radios while maintain
- altitude and course is not as easy as it might seem.
-
-
- PHILOSOPHY BEHIND THE CHOICES MADE:
-
- After a person has mastered the basics of flight, such as landing
- without having the screen split apart, and remembering to lower the
- landing gear, and use the flaps and watch the altimeter, and line up with
- the runway, and switch views to look around, and such, there are two
- basic uses for FS4: One is merely for Visual Flight, the Sunday-driver
- type of pilot, who goes up, looks around, and gets down. A recreational
- pilot, who flies with no particular place to go, and keeps the program
- running with no weather, clouds or winds to contend with. The other use
- is as a fairly realistic simulation of what the real flying world is all
- about, complete with all types of weather and winds, schedules to meet,
- specific airports to reach, and FAA procedures to follow such as flying
- at the correct altitude for your type of flight and direction, and using
- proper ILS procedures and fixes, etc.
-
- In designing this scenery file, both uses have been taken into account,
- and in the process, some choices had to be made. Here are the basic
- guidelines used (which are basically the same guidelines used by Bill
- Honeywell and me in the design of all the NESCTR files.)
-
- 1. Include ALL navigational aids (VORs and NDBs) that service the
- area.
- 2. Include ALL ILS frequencies.
- 3. Include ALL public airports listed in the Airport/Facility
- directory.
- 4. Include as many objects which represent real-world flying
- hazards.
- 5. Include as many other objects and polygons to represent cities
- as memory allows to enhance the VFR flying public.
-
- In the design of the NESCTR files (which if you don't have you should get
- by downloading or by mailing me $20 to get all the NESCTR files) each
- airport was entered as an individual .SC1 file and then merged, along
- with a HUGE navaid file, into the sectors. In the design of
- DALLASTX.SC1, I decided to work just with one large file. This made it
- easier in many respects, since I was dealing with a predetermined, fixed
- area and not something as nebulous as the whole north-east. But it also
- presented some difficulties in deciding what to include and what to
- leave out. Numbers 1, 2, and 3 in the list were obvious, since even VFR
- flying would then be able to spot and land at the airports, using the VFR
- Terminal Area Chart.And, of course, IFR is worthless (as it is with the SubLogic Scenery disks)
- if you can't make use of ALL the navaids on the NOAA charts.
- Plotting one's own course, or using a computer program
- such as NAVIGATE, requires the careful selection of NAVAIDS. This is so
- much more challenging and rewarding, using the NOAA charts and
- publications, rather than the ridiculous charts that SubLogic and
- Microsoft make available. After all, this is a simulation, and if
- simulations can't be as realistic as possible, what good are they?
-
- Number 4 in the list was harder to pin down. The tall buildings of
- downtown Dallas and Ft. Worth are obvious hazards, as are the tall TV
- towers at Cedar Hill. But there are many more potential hazards. Of
- course, if you fly within FAA guidelines for altitude, there are no
- hazards, as long as you are on course. But all the oil derricks, and the
- hills, and many more buildings and towers than are included present real
- threats to safe flight. But this is also a DOS based product from
- MICROSOFT and therefore subject to very tight memory constraints. And
- Bill Honeywell and I have found that 20K for static memory allocation
- works wondefully on a 16MHz 386SX and a 12MHz 286. So all of this area
- had to fit into 20K.
-
- Number 5 was the hardest to decide on. A lot of VFR pilots use highways
- and rivers for navigation. By the time all of 1,2,3,and 4 had been
- entered there was only memory left for the one road included which is I-
- 45 beginning in the southeast part, and then becoming I-35 in Dallas and
- continuing north-westerly. The two lakes are added for the realism of
- approaching Lakeview over the water and for those who want to fly the 767
- into or out of Dallas-Ft Worth. Approaches over water for some reason
- are psychologically more difficult for me, even though it is always the
- threshold of the runway that is the target. I am sure that there will be
- many pilots whose favorite private strip or VFR landmarks have been
- left off. To those pilots, I apologize.
-
- But I am also sure that for those who enjoy the challenge of taking off
- into the clouds and navigating with VOR, NDB and ILS and love the reward
- of breaking out of the clouds at 500 feet with the runway straight ahead,
- this will be a stimulating and enjoyable scenery file.
-
- SOME WORDS OF CAUTION WITH ILS:
- ILS in the real world is slightly different from ILS in FS4. In the real
- world, the same frequency often services both ends of a runway, but on
- different channels, making opposing approaches possible without using
- the backside of the ILS. FS4 doesn't allow this, so in cases where both
- ends of a runway use the same ILS frequency, the ILS is placed in the
- middle of the runway, so be careful on the glideslope. In cases where
- the ILS only services one end of a runway, it is placed where the glide
- slope will bring the plane down to the the threshold.
-
- CLOSING REMARKS:
- I am contemplating creating similar files for all the VFR Terminal Area
- Charts except Boston (which is already in NESCTR11.SC1) and New York,
- which is quite well done in the default FS4 scenery area. I would greatly
- appreciate any comments (and contributions) which would assist my
- future work. I can be reached by mail or phone as listed above.
-
- HAPPY FLYING!