From the Austrlian Civil Aviation Order 20.9
4.2 Passengers
4.2.1 The operator of an aircraft with a maximum seating capacity of 20 or more must ensure that avgas or aviation grade turbine fuel is not loaded onto an aircraft while passengers are on board, or entering or leaving, the aircraft unless, in the case of aviation grade turbine fuel, it:
(a) contains an anti-static additive; or
(b) is loaded in the USA and meets the ASTM D 1655 standard.
4.2.2 The operator of an aircraft with a maximum seating capacity of 20 or more must ensure that fuel, other than the kinds of fuel mentioned in paragraph 4.2.1, is not loaded on to the aircraft while passengers are on board, or entering or leaving, the aircraft, unless the following conditions are satisfied:
(a) before the fuel is loaded, all persons who may be on board, or entering or leaving, the aircraft while the fuel is loaded are told that:
(i) fuel is to be loaded; and
(ii) their seat-belts must not be fastened while the fuel is loaded; and
(iii) they must not smoke, use any electrical equipment or do anything else that might cause fuel vapours to ignite during the loading;
(b) all persons on board, or entering or leaving, the aircraft obey the instructions given under sub-subparagraphs (a) (ii) and (iii);
(c) a cabin attendant is appointed to perform the following tasks while the fuel is loaded:
(i) ensure the safety of the passengers;
(ii) maintain discipline inside the aircraft;
(iii) supervise any necessary evacuation of the aircraft;
(d) while the fuel is loaded:
(i) the aircraft’s “fasten seat belt” signs are turned off; and
(ii) the aircraft’s “no smoking” signs are turned on; and
(iii) the aircraft’s emergency lights (if any) are armed;
(e) while the fuel is loaded, there is at least 1 cabin attendant on duty in the aircraft:
(i) for every 72 passengers on board the aircraft; or
(ii) for every passenger zone in the aircraft in which there are passengers; whichever is more;
(f) while the fuel is loaded, there is at least 1 cabin attendant on duty by at least 1 exit door of each of the aircraft’s passenger zones in which there are passengers;
(g) all cabin attendants who are on duty in the aircraft while the fuel is loaded:
(i) are prepared for an immediate evacuation; and
(ii) supervise the passengers during the loading; and
(iii) ensure that the aisles and exits are unobstructed during the loading;
(h) the areas outside the aircraft that would be used if the aircraft were evacuated are kept clear while the fuel is loaded;
(i) the fuel is loaded using a system which gets the fuel from its container into the aircraft’s fuel tank without exposing it to the air;
(k) if the aircraft’s engine is running — a member of the aircraft’s flight crew is on duty on its flight deck;
(l) the operator’s operations manual sets out:
(i) the responsibilities of members of the operating crew who are on duty in the aircraft while fuel is loaded; and
(ii) procedures for complying with the requirements of this paragraph.4.2.3 Subject to paragraph 4.2.4, the operator of an aircraft with a maximum seating capacity of less than 20 must ensure that fuel is not loaded on to the aircraft while passengers are on board, or entering or leaving, the aircraft.
4.2.4 The operator of an aircraft with a maximum seating capacity of less than 20 may allow fuel that is not:
(a) avgas; or
(b) an aviation turbine grade which does not contain an anti-static additive;
to be loaded on to the aircraft while a passenger is on board if:
(c) the passenger’s medical condition is such that he or she cannot leave the aircraft without assistance; and
(d) the conditions set out in paragraph 4.2.2 are satisfied.4.2.5 If:
(a) fuel is being loaded onto an aircraft in accordance with paragraph 4.2.2 or 4.2.4; and
(b) either:
(i) fuel vapour is found inside the aircraft; or
(ii) for any other reason it is not safe to continue loading the fuel;the aircraft’s operator must ensure that the loading of the fuel stops immediately.