Private vehicle access to the airport, which is on private property, is dissuaded. As such, you'll need to meet the Operator in the reception of Cooinda Lodge. 

In Kakadu, most scenic flights are operated in Gippsland Airvans. Purchased new from the Gippsland factory, these Australian-built aircraft were designed for outback utility work and a credible alternative to the aging Cessna range of similar-sized aircraft; at this time, they are regarded as simply the best light aircraft available worldwide from which to conduct aerial surveillance and scenic flights. At times, a fourteen seat turbine powered Cessna Caravan aircraft can be used for scenic flights.

The Operator uses light aircraft, so take-off weight is a safety issue. They need approximate weights so they don't fly overweight or compromise safety.