(1) What items of electronic/electrical equipment were used between 1969 and 1973 by a person who was training as an air electronic officer to operate Neptune and HS748 aircraft.

(2) What items of electronic/electrical equipment were used by an air electronic officer who served on Neptune and HS748 aircraft between 1969 and 1973.

(3) What were the radiation emission levels from the electronic/electrical equipment used during training.

(4) What were the emission levels from the electronic/electrical equipment used on the Neptune and HS748 aircraft between 1969 and 1973.

(1) and (2) During the period identified, Royal Australian Air Force air electronic officers undertook basic airmanship and radio communications training on the HS748 aircraft. They then undertook specific training on, and subsequently used, anti-submarine warfare equipment fitted to the Neptune aircraft. Only limited information exists on the electronic/electrical equipment fitted to the Neptune as it was withdrawn from service in the mid 1970s. The main equipment fitted to each aircraft used by air electronic officers is as follows:

HS748

HF 618T Radio

Neptune

- AN/APS20 Radar

- AN/AQA4 Jezebel Acoustics Set

- DT-37/ASQ-8 Magnetic Anomaly Detector

- AN/ASA20 Julie Acoustic Sensor

- ARC-92 HF Radio

(3) and (4) Of the foregoing, the most significant item in terms of emitted energy would be the Neptune radio. Due to the time that has expired, however, information on emission levels is not readily available. As there is no certainty that extensive archival research will yield this data, in the interests of efficient use of departmental resources, I am not prepared to authorise the time and effort required to provide this information.