User manual

Aerosoft PBY Catalina 1.00 Manual
Page 48 of 100
An example using the latter vertical navigation type on a Direct-To GPS flight from Tuscon
International (KTUS) to Phoenix Sky Harbor (KPHX) is illustrated below:
Figs 1.6-1.9 show the displays of the NAV 4 page at different times of the trip. I first set the KLN 90B
for a direct flight using the Direct-To feature. After take-off and climbing, I leveled off at 12,000 ft
above MSL at 225 kts GS with the NAV 4 page displayed as shown in Fig 1.6. At approximately 75
miles outside of KPHX, I set the selected altitude to 2100 feet (MSL), and the distance to 10 nm to
get to the KPHX pattern altitude of 2100 ft above MSL at 10 miles out. I decided to descend to that
point at a rate of 1600 fpm at 200 kts GS. On the CAL 4 page I calculated that this vertical speed and
GS corresponded to an angle of ~4.1 degrees. I then entered this value in Line 5 of the NAV 4 page.
The INACT annunciation in Line 1 was replaced by the ARMED annunciation showing the unit was
activated. At 10 minutes from the descend point the unit began to count down from 10 minutes. Fig
1.8 shows a display of the NAV 4 page taken at 6 minutes and 10 seconds from the descend point.
When there was ~5 minutes to go to the descend point, I used the autopilot airspeed function to
slow the aircraft to ~200 kts groundspeed. At 0 time, the advisory altitude replaced the ARMED
annunciation. I set the KAS 297C altitude value to 2100 ft, and the vertical speed to 1600 fpm. Fig.
1.9 shows the display at about 4400 ft above MSL. At this time I was doing well on the descent as
shown by the closeness of the indicated and advisory altitudes, and by the remaining distance. The
autopilot leveled the aircraft at 2100 ft and the distance to KPHX was 10 nm.
NAV 5: Navigation 5 Page (NAV 5)
Fig1.10
The navigation 5 page displays a moving map. The range value of the map can be changed by
zooming in or out using the LEFT INNER KNOB (letters I and J), and the map display can be "de-
cluttered" using the CLR button. Note using the zoom function on the left screen will cause the Nav1
page to be displayed on the right screen. The range values go from 200 ft to 500 nm and the current
value is annunciated at the lower right of the screen. ILS arrows for ILS capable runways to be
displayed on the map to aid in ILS approaches. The symbolic aircraft shows your position on the
map.