An excellent link provided by Mike J. The AEA de-icing regs are the 'bible' for most GHA's, and if they can comply with those regs then they will pass the de-ice audits carried out by the major airlines and AEA.
Without doubt the monitoring and auditing of de-icing training and procedures has moved on a long way in the last 8-10 years, and the old Fliteliners are no longer acceptable to most operators. Modern de-icing vehicles, rigs and fluids offer a much improved service over the older ways.
Having said that I used to be quite surprised at some crew who would decline de-icing unless it was really severe. Usually the same airline it has to be said
