there is a need to have Rules to successfully conduct events such as the GAAR. The
GAAR is intended as a fun event and is open to everyone who is interested in virtual
flight. Please take the time to read the Rules. Registration in the event is
interpreted as acceptance of the Rules.
Objective and Event Format
1. The GAAR is not a race nor a competition! It is an event in which
individuals participate against their own flying ability by navigating over a series of
Flight Legs on which they are aiming to fly as close as possible to an individually
calculated "target time". Flight Legs involve either and / or a
combination of VOR, NDB and "dead reckoning" navigating under both day and night
Visual Flight Rule (VFR) and / or Intstrument Flight Rule (IFR) conditions with variable
departure times and weather conditions.
2. The event is conducted using MSFS versions FS9 and FSX. These are the
only officially supported filght simulators for the event. Participants wishing to
use X Plane for the event are welcome to do so, but the availability of the flight
situation files is subject to someone offering to convert the MSFS Flight Situation files
to the required format.
3. Participants may fly any radial or other piston engined aircraft of
their choice that flew in the period 1930s to 1950s. Turboprop, turbojet,
turbofan and other such engined aircraft are not eligible for entry in the event.
Subsequent model variants of an aircraft are eligible under this rule, e.g. Cessna 172 -
first flew in 1956, (thereby making it eligible) with current production models being the
172R and 172S (or 172SP). A model variant will only become ineligible if it
compromises the rule on engines, i.e. fitted with a turboprop, turbojet, turbofan and
other such engine. Aircraft may be fitted with "ferry tanks" to effect a
minor increase in the range of the aircraft. Where "ferry tanks" are used,
the total aircraft weight must remain inside the specified maximum take-off weight (MTOW)
for the aircraft and / or the capacity of the "ferry tanks" must be no greater
than 10% of the original specified fuel capacity for the aircraft.
4. It is the responsibility of individual participants to ensure their nominated
aircraft is suitable for use in the GAAR. Changing to another aircraft type once the
event has begun is not permitted. Other considerations will include the Flight Leg
distance and runway surface. This information can be found under the "Flight
5. It is highly recommended, but not mandatory, that aircraft have both a VOR and
NDB navigation capability. Additionally, a DME capability would also be
useful. Whilst it is intended and highly encouraged that these be the primary
instruments of navigation, it is acknowledged that some participants may find the event
too challenging. Therefore, the use of GPS, FSNavigator, or other such navigation
aids is not precluded.
6. The "target time" for each flight leg is calculated for each
individual participant based on a Test Flight over a specified course in their chosen
aircraft. Additional time elements are included for the "climb to cruise"
and "landing circuit" phases of each Flight Leg. The Test Flight time is
submitted during the Pilot Registration process. The details for the Test Flight are
contained under the "Test Flight" link. The "target time" for
each participant for each Flight Leg will be displayed under the "Scores" link.
7. Pilot registration for the event will open from 0001 hrs UTC, 01 Jan 11 and close
at 2359 hrs UTC, 28 Jan 11. Prior to registering, complete the Test Flight as per
the instructions under the "Test Flight" link.
8. Persons wanting to participate in the event must complete and submit the
application under the "Pilot Registration" link. All applications must be
completed fully. Incomplete applications will not be processed. On acceptance, each
participant will be allocated an ID number which MUST be quoted in all PIREPS and
correspondence. It is not intended to issue registration confirmation emails.
Participants can confirm their registration in the event by checking for their name on the
Roster under the "Roster" link. It may take up to three days for a name to
appear on the Roster.
9. Participants can submit multiple entries for the event flying different
aircraft. A separate Pilot Registration is required for each entry.
10. A series of downloads (one for each Flight Leg) are required to set up
standard flight parameters for weather and departure time for each Flight Leg.
Whilst departure and arrival runways are established as part of these flight parameters,
participants are free to choose whatever runway they like. These required files are
available under the "GAAR Downloads" link.
11. Participants must file a separate PIREP for each Flight Leg by 2359 hrs UTC on
the date specified. Any participant failing to file a PIREP within the specified
time period will be declared "withdrawn". Participants my fly and submit
PIREPS in advance of the time and date specified in the Flight Schedule. Results
from PIREPS submitted in advance will not be posted until after the respective Flight Leg
specified reporting time and date.
12. All PIREPS are to have times submitted in minutes rounded to two decimal
places. For example, a flight of 1 hr 2 mins 56 secs would be submitted as 62.93
mins. It is recommended that you download and use Tom Goodricks FTime from the
link on the "GAAR Downloads" page. It records time from when the aircraft
reaches 30 knots on takeoff until it decelerates to below 30 knots on landing.
Alternatively, you may record the time using a panel clock, but convert the seconds to
decimal minutes. i.e. 30:45 on a clock would be 30.75 minutes. The use of external
clocks, watches, etc, is prohibited. All timers must be internal to the flight
13. The honesty and integrity of participants is relied upon entirely in entering
this event and for submitting PIREPS that are accurate. Where a PIREP appears questionable
or to be in error, the organisers may return it for correction or confirmation before
posting the results.
14. The format for submitting PIREPS is detailed under the "PIREPS"
15. The scoring system involves a participant starting each Flight Leg with
100 points. The "actual time" flown for each leg is compared to the
"target time" and for each percentage point difference, a point is deducted. For
example, the "target time" for a Flight Leg is 50 mins, the "actual
time" flown is 52 mins, therefore the score for the Flight Leg is 96 points.
Conversely, using the same example but where the "actual time" flown is 46 mins,
the score for the Flight Leg is 92 points. The scores for each Flight Leg will be
accumulated over the entire rally. All scores will be calculated to four decimal
places and rounded to two decimal places.
16. The Scores will be updated ASAP after the closing time for each flight.
However, the organisers do not guarantee that updates will be applied within any
17. Coordinated Universal Time (UTC) is the standard time zone used for the
event for the purposes of Pilot Registration , Flight Schedule dates, PIREPS, etc.
18. The organisers have provided a forum where participants in the GAAR may
leave comments, messages, etc, for other pilots and / or generally discuss their progress
in the event. This forum should not be used as a means for formally contacting the
organisers with official queries or messages.