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Tuesday, 19 August 1980
Page: 394

Mr Morris asked the Minister for Transport, upon notice, on 19 February 1980:

(1)   What was the advice provided to his Department by Qantas which conflicted with paragraph 113 of the Public Works Committee's report on Brisbane International Airport redevelopment referred to in his predecessor's speech to Parliament on 22 November 1979 (Hansard, page 3403).

Mr Hunt -The answer to the honourable member's question is as follows:

(1)   Qantas advised my Department that at Brisbane, for the B747-238B with full volumetric pay load (16 first and 423 economy class passengers and 1 1.6 tonnes of cargo) the following runway lengths would be necessary for aircraft fitted with JT9D-7F engines at maximum power:

Brisbane- Hong Kong 2,941 metres (9,650 feet) Brisbane- Singapore 2,734 metres (8,970 feet)

Brisbane- Honolulu 3,093 metres (10,150 feet) Brisbane- Bangkok 3,216 metres (10,550 feet) Brisbane- Tokyo 2,987 metres (9,800 feet)

These lengths are based on the worst season, October to March using a reference temperature of 25.6°C.

Qantas has eleven B747 aircraft fitted with JT9D-7F engines. The first six B747 aircraft purchased by Qantas are fitted with Pratt and Whitney JT9D-7A engines which require approximately 200 metres more runway.

My Department noted that the reference temperature of 25.6°C used in the Qantas calculations is exceeded for about 1 9 per cent of the year. During such periods a longer runway would be needed to permit the same pay load to be carried. Further, my Department noted that the DC 10 aircraft required a 3,200 metre runway to achieve full pay load capacity to Singapore.

This information confirmed my Department's proposal to provide a 3,500 metre runway to cater for future requirements.

The Qantas evidence to the PWC stating that a 200 metre extension to the existing runway with 200 metres of clearway (giving a total length of 2,745 metres) would give full passenger and cargo pay load on routes to Singapore, Hong Kong, Kuala Lumpur, Honolulu and Tokyo, referred to aircraft powered with Rolls Royce RB 21 1-524D4 engines. Delivery of these aircraft is expected to commence in 1981-82. A number of the twenty-one aircraft previously purchased by Qantas could be expected to be in service after 1 986, thus requiring the greater runway lengths.

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