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Firefighters Hose Down Emirates Boeing 777 at St Petersburg Airport in Russia Following ‘Fire’ But Plane Departs Just 6 Hours Late

Firefighters Hose Down Emirates Boeing 777 at St Petersburg Airport in Russia Following ‘Fire’ But Plane Departs Just 6 Hours Late

Firefighters at St Petersburg International Airport in Russia responded to an apparent ‘fire’ onboard an Emirates Boeing 777-300, which was preparing to depart for Dubai on Friday night.

A video shared on social media showed emergency responders hosing down the tailfin and back half of the aircraft following what had been initially reported as an engine fire.

It would appear that the incident was isolated to the plane’s auxiliary power unit (APU), which is located in the tail cone of the aircraft. The APU provides power to the plane when the main engines haven’t yet been switched on.

APUs are small turbine engines that are commonly used on the ground to provide electrical power, air conditioning systems and hydraulics to the aircraft and are started via an onboard battery pack.

The APU is also used to start the main aircraft engines, although planes can still be legally flown in the event of an APU failure – it just makes things a little harder.

For example, electrical power and air conditioning, while not as good, can be supplied by ground-based systems, while mobile air-start systems can be used to get the main engines operating.

In fact, in an attempt to reduce emissions, many airlines encourage pilots to rely on ground-based systems rather than the APU, although this is very much dependent on the state of airport infrastructure.

Emirates didn’t immediately respond to a request for comment, but the 16-year-old Boeing 777-300 operating as flight EK176, departed St Petersburg nearly six hours late on Saturday morning.

The issue could have been as simple as harmless but dramatic-looking smokey exhaust, although the incident will once again raise questions about the risk of operating Western-built aircraft in Russia.

Russia is running low on spare parts due to US and European sanctions, and Emirates, like other airlines still operating in Russia, is technically forbidden from importing spare parts should one of its planes suffer a mechanical issue in the country.

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