Am rather concerned re map accuracy.

Flew from N Yorks to Boston today. Part of route was throgh the stub between Cranwell and Coningsby. I particularly noticed a difference of some 0.5 miles between Garmin (Jeppesen) and SkyDemon re the southern stub boundary. According to SD I reached the s Boundary about 0.5 miles before Garmin said so. One has to be wrong. Pains me to say it but suspect Jeppesen is correct.

Other than that 8410/SD worked flawlessly.

Also location of my home field, Husthwaite is wrong in SD. I know this because when you are on the runway, airfield loaction on SD is about 0.3 miles south.

Conversely, all roads are exactly right  .. going by test when just driving about.

Any thoughts Tim?

David

Why would you think the SkyDemon chart is wrong? Having just checked the AIP description of that zone, and its accompanying chart myself, it looks to be the same as the SkyDemon data. Remember that our data is updated a lot more frequently than Jeppesen so it's possible they haven't taken into account a change of orientation of the stub (just guessing).

The location of Husthwaite airfield is taken directly from the UK AIP, which published information about microlighting sites. If they have got it wrong, please inform them.