Section 184(1)(b) in The Naval Ceremonial, Conditions Of Service And Miscellaneous Regulations, 1964
(b)be a Petty Officer Airman (Aircraft Handler), (Safety Equipment), (Meteorological Observer), or (Photographer) or an Acting Petty Officer Airman (Aircraft Handler), (Safety Equipment), (Meteorological Observer), or (Photographer), or a Petty Officer Airman Fitter (Air Frame), (Engine) or (Ordnance) or an Acting Petty Officer Airman Fitter (Air Frame), (Engine) or (Ordnance) or Petty Officer Aircrewman with not less than one year's service in the actual performance of duties in such [rank] [Substitued by S.R.O. 192,dated 10th September, 1973].