Originally Posted by
Heliport
A common myth, often perpetuated by people who disapprove of low level aeros. (Not suggesting that's your reason.)
If a display pilot did his whole routine below 100' it would be a valid point.
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Too low or not?
An aggressive display for this type of aircraft but not IMO too low or flown in an unsafe manner. The critical factor is the direction of the energy vector of the the aircraft. The rolling manoevers all started with a upward line which keeps the energy of the aircraft pointed away from the ground for most of the manoever. The loop was also ovaled so that as the aircraft approached the ground it did not have a particularly nose low attitude thus ensuring there was not an excessive rate of descent.