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Thursday, 2 December 1976
Page: 3209

Mr Morris asked the Minister for Transport, upon notice:

(1)   What length of service between overhauls was planned for engines fitted to the Qantas Boeing 747 aircraft when the decision was made for their purchase.

(2   ) Has that period been altered; if so why.

(   3 ) What is the length of flying time involved in a cycle for a 747 engine.

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

(   1 ) There was no fixed overhaul period planned. The initial maintenance program of the Qantas Boeing 747 and its engines followed closely the program approved by the Federal Aviation Administration of the U.S.A under the Maintenance Review Board system. This program included the regular internal inspection of the engine by horoscope, the retirement of critical engine parts at fixed life limits, the disassembly inspection of engine modules on a sampling basis and condition monitoring of all components.

(2)   No, the same system still exists but some retirement lives of critical engine parts have been extended by fitting modified parts.

(3)   The average flying time per heat cycle for Qantas Boeing 747 engines in 197S was 3.6 hours.

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