For badge height flights the unit must have been
calibrated within 2 years. (A calibration certificate is supplied with
each unit). For out of date units, a re-calibration service is provided
at a cost of £36.50 including p&p. Send your unit with a cheque
to EW Avionics, Uplands House, Nr Banbury, OX15 6HJ.
The units are guaranteed for 2 years, in the unlikely
event of failure after this period there is a minimum service charge of
£30 plus p&p.