A pilot of an aircraft performing an agricultural or firefighting operation may commence a turn after take-off from an aerodrome at an altitude other than that prescribed in Part 91 if—
(a) | the turn does not cause the aircraft to fly over a populous area, unless this is required in the interest of the safe operation of the aircraft; and |
(i) | is used solely for agricultural or firefighting operations, as applicable; or |
(ii) | has an aerodrome control service in operation and the turn is performed in accordance with air traffic control clearance; or |
(iii) | in any other case, displays the visual ground signal prescribed in Part 91 indicating that an agricultural or firefighting operation is being conducted from that aerodrome. |