Wildly complex defined as disabling the AHRS feature through available software and being prepared to show it is disabled if asked.
Butterfly has the feature and has provided a way to comply. They worked with the US RC and the result is a good one in my view.
When I started racing, an official went around and checked that the gyros were out. We're a lot more trusting these days. Fortunately sportsmanship seems to prevail.
UH

Way below is copied from the last worlds rules.

Since our contests are used to choose US Team members to race on the World level, should not we train to the World level and use their rules where reasonable? Some may claim several of our current rules are not enforceable, but again some have not witnessed that. Sportsmanship is displayed by many, but not by all. Some have witnessed the highest seeded pilots say if they aren't caught for the rule violation, by contest personal, they sure aren't going to turn themselves in. Yes, some contests have been won by rule violations that are known with no action taken.

Not only are contest management responsible for rule enforcement, but the entrants are also charged with this, as its an agreement between the FAI, SSA, entrants and contest management that the contest shall be held according to the rules.

On one hand, some wish to conform to IGC rules, then change ours, for whatever self serving needs. This has been going back and forth for some time. Yes, change is needed. Hopefully, it will be in the proper direction. Not from extreme views but from reasonable discussions.


33rd World Gliding Championships
www.wgc2014.eu
Central Gliding School tel: +48 65 529 24 00 Page 4
ul. Szybowników 28
64-100 Leszno www.wgc2014.eu
Poland www.cssleszno.eu

D. Technical requirements
Glider avionics (including flight recorders, navigation and anti-collision devices) must be firmly mounted to the
glider. Any instruments, accessories nor baggage cannot limit pilot's vision nor interfere with glider controls.

Use of FLARM anti-collision devices is mandatory.

D.1. Mandatory additional equipment
In addition to the mandatory equipment listed in the rules (see Bulletin no 1), pilot shall possess:
a. cellular (GSM) or satellite phone to be carried on board,
b. glider anchoring equipment (for gliders not stored overnight in hangar or trailer) - see par. D.5,
c. hardware and software for downloading his/her flight recorders,
d. for Team Captains: GSM cellular phone with SIM card of Polish operator.

D.2. Instruments that must be removed from the sailplane
Bohli, Schanz, KT 1 and other gimballed compasses, turn indicators, artificial horizons and any other devices allowing
to fly without ground reference must be removed from the glider.
Software artificial horizons integrated with FR must indicate in their IGC files that AH function is disabled.
Doubts about eligibility of other devices will be discussed with Stewards.

Best. Tom #711.