§ Captain Kerbyasked the Secretary of State for Defence how many Wessex 5 Fleet Air Arm helicopters have now been modified for flying in cold, damp conditions; how many remain to be modified; and what is the estimated cost of the entire modification programme.
§ Dr. David OwenA programme of modifications is in hand which will improve the engine performance of Wessex 5 helicopters in cold damp weather conditions. Sufficient aircraft are being modified to meet operational requirements; so far half the aircraft have received the most important of these modifications and no delays are foreseen in completing the planned programme. The work of incorporating the modifications is being carried out in-Service and the expected cost of the necessary equipment is of the order of £200,000.
§ Captain Kerbyasked the Secretary of State for Defence how many Wessex I and III Fleet Air Arm helicopters have been modified with gearbox containment shields; how many remain to be so fitted in view of the need for this modification arising a year ago; and if he will give an estimate of the cost of completing this modification programme.
§ Dr. David OwenDevelopment and testing of the required shield was substantially completed during July, 1968 and a revealed weakness has since been overcome. Production is in hand for all Wessex 1 and 3 helicopters and equipment deliveries will be sufficient by the end of November to fit approximately one-third of the aircraft. The full number of equipments required is expected to be available by March, 1969. Incorporation of the modification is being carried out by the Service as a matter of priority. The expected cost of the equipment is of the order of £60,000.