A LITTLE BIT MORE ON ALTIMETRY
•If you leave your altimeter on QFE-Dunstable you will probably have an additional margin for error locally – but this is not certain
•If you reset your altimeter to QNH you might be able to relate it to altitudes on the map
- Discuss !!!
•You have got to decide if/when to re-set the altimeter and to what (QFE Dunstable is on your map/hand !!!)
•Your computer might give you height agl if it has a terrain database– but beware !!!!  Altimeter definitely won’t.
•So - IGNORE the altimeter (or computer) below (say) 1000ft indicated - or as appropriate for the region – and use your judgement of height to use for circuit and landing.
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