A Qantas Airbus A330 Aircraft, flight number QF781, has landed safely without incident in
Perth after the passengers on the Perth-bound flight reported hearing a ‘loud bang’ from one
side of the twin-engined plane engine. The Airbus A330 aircraft made a priority landing at
Perth Airport around 9:37pm local time on 25 March, arriving approximately 52 minutes
behind schedule.

Upon landing, emergency services met with the aircraft on the tarmac. However, the aircraft
taxied to the gate without assistance, with the passengers disembarking normally.
The ‘loud bang’ heard by passengers happened due to a mid-air engine blowout, therefore
resulting in the pilots having to manually shut off the affected engine, together with
requesting a priority landing into Perth Airport. Qantas also added in a statement that the
Airbus A330 aircraft was designed to operate with one engine too.

Qantas QF781 is a daily scheduled flight from Melbourne to Perth, utilising the Airbus A330
on the route. The Aircraft in question is VH-EBA, an approximately 21 years aircraft,
equipped with 2 GE CF6 engines according to airfleets.net. The Airbus A330 have been a
frequent regional workhorse in Qantas’ fleet, connecting major australian cities with major
destinations within Asia. the Airbus A330 is also used on high-density domestic routes,
similar to QF781, from Melbourne to Perth.

Engine Issues – Should you be concerned?

While engine issues are highly uncommon due to the stringent checks and quality control on
each component within the engine, there might still be exceptional occasions where such
incidents happen. However, while recognising the risks of dual engines, Aircraft
Manufacturers and Organisations have actually came up with standards so as to ensure that
an aircraft can also land on a single engine, similar to what we saw on QF781.

One of the most well known standard is Extended-range Twin-engine Operations
Performance Standards (ETOPS) which is an acronym for twin-engine operation in an
airspace further than one hour from a diversion airport at a designated one engine
inoperable speed. This ensures that twin-engined aircraft could safely operate routes over
water or remote land without an alternative airport near the flight path, which once required
aircraft with 3 or 4 engines to fly on that route.

In this case, the Airbus A330 has been certified to fly ‘Beyond ETOPS 180’, and have
received ETOPS 240 certification, which is a certification to enable the twin-engined aircraft
to fly for up to a maximum of 240 minutes with 1 engine inoperative in a cruise condition.
Currently, most twin-engined widebody aircraft in operation would generally have an ETOPS
certification of at least ETOPS 180, with the new Airbus A321LR also having ETOPS 180
certification, therefore enabling the narrowbody to fly long haul flights.