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Hello Zeto, very good explanation! I have a more mechanical question: What are the most common failures on APU, and how do you solve them? Thank you mate!

I have a question: is it possible that a failure in this system could cause an accident like the recent Voepass 8203 in Brazil?

Sexy host, i'd like to start your apu 😅

I have a question: is the APU electrical output capacity reduced when bleed air is being used for an engine start?

Everything is crystal clear right now for Apu, Ty Mr. Tomáš

Your work and videos are VERY MUCH appreciated!! Thank you!

Thanks for the video 👍

Another great explanation Zeto

Thank you, also for me as a Pilot it is always interesting.

Thanks, Tomash !

Great , very. Interesting. Now I know how the fire loop works... Tks

Do you know this pushbutton switch remove procedure is in which amm chapter? Thank you very much.

Danke wieder was Neues gelernt!

Is it always open like that behind the pedals, or is there normally a cover.

I'm a bit confused about the AC part of the electrical system. The turbines spin very fast, but wile changing power their speed also changes which should change the frequency of the AC. Am I missing something or how is that combated?

I work as Tower ATC I an tell you that when ATR is parked on the aipron it's much louder when runing one engine than other jets runing APU. So usually then run GPU instead.

Du bist super! Sehr interessant. Danke

How does this not overheat the power turbine? I would imagine if prop is stopped so are they...

Muy interesante su información. Gracias por compartir sus conocimientos.

Great information

Very well explained. Although my airline's subsidiary did fly ATR72s, I never had a chance to work on them.

I prefer calling them sparkplug's. But ignitor sounds more cool 😂

As a fueler we never access the fueling panel and connection until the engine is completed shut off. Just thought of something thought, can u start the engine in hotelmode?

Is this task also done by B2 Avionics Engineer? Or only B1?

thank you

Very Nice airplane ❤ ! Thanks

Awesome video! Thanks for posting these.

Thanks to you I always enjoy flying from Vienna. ❤ Du machst echt einen wichtigen Job in der Technik 👍

wow that's a job

Я авіаційний технік з України, маю ліцензію B1.1. Шукаю роботу в Європі, але після співбесіди відповіді від роботодавця не отримую ((

What is the definition of hotel mode?

Nice to see details about ATR. I love airbus but sometimes it is nice to see something else :)

What does that red vertical line indicate in the middle of this ATR fuselage?

Thank you sir for giving valuable information

Quite interesting, although I'm very familiar with these operations as I'm currently working on the ATR72-500. I would love to see more videos on this particular aircraft, as sharing your previous experience/knowledge on such aircraft would help out a lot.

Here you can see how complicated it is to perform the reliability SB to the igniter adapter spacer... And to safety wire the adapter... Nice to see how it works "on wing" 😉

Back when working around these things, the engine on hotel was treated with similar danger areas than normally running one. Use of rear service door was prohibited when it was running on hotel, as you'd be within engine's rear danger area, though due to exceptional circumstances I've ended up doing that, twice if I remember. One little 'detail' is where that ground air connection goes: it is right next to the RH propeller. In principle, you should not ever need to use hotel when ground air is connected, but I am aware of a case or two of danger & damage. The order was to have the engine completely shut down (=not in hotel) if it was running for whatever reason, before getting there to (dis-)connect ground air. The GPU, on the other hand, can be safely connected with the prop turning. In overall, the hotel mode was not used that much at all, mainly only during summers if the cabin was hot. It is a bit dangerous for the very reason it appears safe to approach the propeller.

Hi, how I can become an aircraft maintenance technician? I already work on trains so I have solid electronic/meccanic bases

Propeller, feather configuration, geometric pitch, fixed and variabile pitch , the problems about aerodynamic tip stall , structural strenght, one of the best modules for a B1 technician. N M17 which Is also bonded to M14 and M15, propulsion and gas turbine engine. The turnoprop uses turbocompressor for the air conditioning system, very interesting and Amazing topic

Thank you for explaining that

Could that brake lever being used in-flight have something to do with the recent crash in India?

Love the ATR

Du bist echt super! Immer wieder sehr interessant • Weiter so!

Thank you for this presentation! I worked on ATR a few years ago.

Why did you have a drill? Normally it's only the structural techniciens , right?

There is a ''How to...'' Video for everything on YT, next time I won't be surprised when a pilot pulls out a How to Fly an Airplane Video 😂

better to close it slowly, and open it slowly :)

ist das der schwechat flughafen?

You have B1.1 and B2 both licences ? Or cat C

131-9a or b?