Air Niugini says the loss of a codeshare agreement with Qantas is behind the decision to end Port Moresby-Townsville flights and reduce service to Sydney.
The ATSB has opened an investigation into a depressurisation incident on board a Qantas Freight 737 freighter that led to one of the pilots becoming incapacitated.
Qantas took delivery of its first Boeing 747 on August 16 1971, which means the type has been in the airline’s fleet for 47 years.
Pilot groups have criticised the federal government’s labour agreement with Qantas that allows the airline to bring in overseas pilots and instructors to support its training needs.
Australia’s major carriers Jetstar, Regional Express, Qantas and Virgin Australia have pledged to support farmers battling the drought.