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18 - CLARIFICATION OF RULES FOR BACKTRACKING

Proposal from

Barney TOWNSEND (GBR)

Proposal title

Clarification of rules for backtracking

Existing text

4.24.5

During a navigation along a leg, competitors must not backtrack along the track line against the direction of the task. Backtracking is defined as flying with an angle of greater than 90 degrees in respect to the intended flight direction. This limitation is extended to the corridor defined by the width used to score gates in the task.

Also, in

Annex 3, 1.11.9 Collision Avoidance

During a navigation along a leg, competitors must not backtrack along the track line against the direction of the task. If there is a need to backtrack, competitors must leave the track line and fly back well clear of it before rejoining the track line at an earlier point. Backtracking is defined as flying with an angle of greater than 90 degrees in respect to the intended flight direction. This limitation is extended to the corridor defined by the width used to score gates in the task.

New text

4.24.5

During a navigation along a leg, competitors must not backtrack along the track line against the direction of the task under any circumstances. Backtracking is defined as either re-joining the active track line at a point prior to the point where you departed from it or flying with an angle of greater than 90 degrees in respect to the intended flight direction within a. This limitation is extended to the corridor defined by the width used to score gates in the task. In tasks with more than one possible active track line (e.g. Cog wheel navigation with unknown legs), all track lines shall be considered as active.  

Also, in 

Annex 3, 1.11.9 Collision Avoidance

During a navigation along a leg, competitors must not backtrack along the track line against the direction of the task under any circumstances. If there is a need to backtrack, competitors must leave the track line and fly back well clear of it before rejoining the track line at an earlier point. Backtracking is defined as either re-joining the active track line at a point prior to the point where you departed from it or flying with an angle of greater than 90 degrees in respect to the intended flight direction within a. This limitation is extended to the corridor defined by the width used to score gates in the task. In tasks with more than one possible active track line (e.g. Cog-wheel navigation with unknown legs), all track lines shall be considered as active.

Reason

The current wording and definition of backtracking do not prohibit the repeat flying of the track line by a competitor in order to gain competitive advantage, provided that they fly to a previous point on the track line whilst remaining outside the corridor. Similarly, in tasks with more than one possible active track line, it does not prohibit a competitor flying more than one track line successively provided that they fly between the tracks whilst remaining outside the corridor. This was illustrated at the EMC, where a competitor flew the whole of the second half of a cog-wheel on the inner track after missing a turnpoint photograph that would have sent them to the outer track. Upon realising the error, he flew to a point outside the corridor defined by the width used to score gates before turning, flying back to the outer track, and completing the task on the correct track. The jury accepted a protest against this behaviour but only because he strayed inside the corridor during his flight between the two active tracks and put other competitors at risk.

S.10 Editors note. This proposal was submitted to me by email in advance of the deadline; I have uploaded it here now in advance of formal publication in the S.10 editors report. 


Added by Barney Townsend Last edited by Barney Townsend on 15 Oct, 2018 20:40. Quick links: http://wiki.fai.org/x/XwAmAg or 18 - CLARIFICATION OF RULES FOR BACKTRACKING
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