QF703 took off from Cairns International Airport at 2.19pm and was on account of land in Melbourne at 4.20pm.
Instead, the flight landed safely again in Cairns at 3.34pm.
A Qantas spokesperson stated the flight taxied to the gate safely and no emergency companies have been wanted.
The spokesperson stated engineers at the moment are investigating the incident.
Source: www.9news.com.au
