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or instrument flying course book.
Project Magenta Revision: 26-May-07
70
PITOT and STATIC PRESSURE SYSTEM
The pitot supplies dynamic pressure to the ASI. The VSI and ALT measure changes in static pressure.
STATIC FAIL
On this a/c there is no warning indication that supplies information directly to the pilot on the integrity of
the Pitot or static system. In normal operations the Pitot tube and static vents should be checked prior to
flight that they are clear of ice and debris. If possible icing conditions are encountered (note that the PA28
is not licensed to fly in known icing conditions) the Pitot Head is fitted with a heating element which can be
activated by the pilot via the Pitot Heat switch. Note when operating it that on the Amps meter at the
bottom of the panel you should see a gain in the amps being drain – this is a good pre-flight check,
perhaps prior to take-off to ensure that both the Pitot heater is in working order and that indeed the
ammeter is charging and operating.
PITOT FAIL
On the simulator, by pressing the Pitot fail button
the pitot static system will fail and the ASI will read
zero. However, if icing is encountered during flight,
regardless of whether the failure mode is active or
not) then the pitot might become blocked with ice if
the Pitot heat is not used. In which case the ASI will
remain static and not move until the ice has been
cleared relieving the system of the blocked pressure.
In both scenarios the pilot can practice the relevant
limited panel operations. In such an instance, in
straight and level flight, perhaps in the cruise, if the
pitot becomes blocked the AIS indicator will give constant inaccurate information to the pilot. The a/c could
in fact be going much faster than indicator or worse, much slower. Constant reference to the temperature
gauge with a period airframe ice check are essential to ensure that pitot icing is avoided.
Project Magenta Revision: 26-May-07
71
LOWER PANEL GAUGE INDICATORS – PA28
The fuel tank you are using and the position of the throttle and mixture can be selected via the Sub Panel.
Although not type specific we have added an option for retractable Gear here as well but for obvious
reasons this option should not be selected when operating fixed gear a/c. On the PA28 there are only two
fuel tanks in each wing. There is not cross feed or “Both” option. However, again in the Options menu we
have added an additional switch position marked Both for people wishing to use the panel with different a/c
types.
PRIMER
The PA28 is fitted with a fuel primer. We have simulated the primer option for this type of a/c. It should be
noted that there are different techniques used to start a/c engines (and it is possible to start them without
any primer) we offer this as a guide only.
Winter time cold start in temperatures below 15 degrees c x6 Primes Summer time start in temperatures
above 15 degrees x4 Primes Hot start after engine has been recently run – priming may not be necessary.
Project Magenta Revision: 26-May-07
72
Battery & Alternator
The Battery switch and alternator switch are usually operated as one single switch. The battery switch is
required for all electrical services and to operate the engine starter motor. The alternator is required to
ensure the constant charging of the battering when the engine is running.
AVIONICS – PA28
We have provided a set of radios which are on by default at the top of the GAIFR panel. Ideally, to get
realistic use of complex communication and navigation radios the panel should be used with appropriate
hardware. If hardware is being used the graphic radios can be switched off via the Options menu.
The radios in graphical form have been positioned in such away that maintains adequate size of the IFR
instruments. To position them in their correct physical place would make the instruments as much as 20%
smaller.
We have developed a number of ways to select and
change frequencies on the radios. The first, and
most common (if a little fiddly) is with the mouse,
positioning it over the actual numbers themselves.
The second and what we would recommend for
those without hardware is to use one of the
predefined keyboard hot keys:
1 = Comms
2 = Navs
3 = ADF
In this fashion, a menu pops up indicating the current navaids or com stations in your immediate locality.
These can be selected by pressing the corresponding key next to the station. The frequency in the standby
box will be updated ready for use.
All of the avionics have separate on/off switches. There is no Master Avionics switch in the PA28, thus each
radio must be switched on according to the checklists. All radios have an IDENT button on the radio itself
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