In various Youtube videos, e.g. this one, one can see that the Boeing 787 is capable of a parallel engine start (both engines are started at the same time). Are there any other commercial aircraft around that allow for a dual (or multiple parallel) engine startup?

What is the reason the Boeing 787 can perform parallel engine starts? What is the difference with other aircraft that cannot perform a parallel startup?

  • $\begingroup$ starting an engine require bringing some energy to it (usually through bleed air). if the APU or ground pack cannot provide enough energy to safely start both engine at once, it seems wise to start it one by one. Moreover, one running engine may provide energy to start another one. $\endgroup$ – Manu H Jan 10 '18 at 13:17

The main reason behind this capability is that the Boeing 787 starts its engines entirely on electrical power generated by the APU's VFSG (Variable Frequency Starter Generators) vs relying on APU bleed air to start the engines. Thus there isn't the typical drop in pneumatic pressure caused by the pneumatic starters on regular jetliners. See 787 No-Bleed Systems for reference.

The Airbus A-340 can start both engines on a wing at the same time (1 & 2 then 3 & 4) as described here.

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    $\begingroup$ If I know well also the 747 can start two engines at the same time. $\endgroup$ – Stone Jan 17 '18 at 13:28

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