[Username Protected]

I can confirm 7 'leading to an unannounced asymmetrical loss of normal brake system...', with 8 much better!

[Username Protected]

Regarding flash of Brake Fail (or Anti-Skid) fail as (Username Protected) referenced above, here's a prior thread where (Username Protected) shared the service letter. As he said, basically it's a known issue and if extinguishing within 30 seconds, disregard. My observation is that it comes on occasionally right after staring engines (and/or disconnecting GPU) https://www.phenompilots.org/threads...ll=1#post57431

[Username Protected]

I had BCU-8 installed in April of 2021. It's a noticeable improvement from 7 - much better lateral stability.

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I have BCU - 07 and was just told that the SB -0019 was grayed out on my tech pubs and SB-0020 was current and that my Phenom wasn't eligible for the BCU-08 upgrade. Embraer is looking into this because I believe it should be covered or am I missing something? They said I would have an answer tomorrow...

Update, BCU -07 has been superseded by -08
The most current service bulletin is attached.
Apparently, -07 wasn't well received.
Hope this helps.

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I would consider this a safety issue and insist on it.

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They found the assymetrical brake by my reports and fdr. Doing c(Username Protected)wind landing with bcu7 when landing 1 wheel than other, the bcu seems to
Interpret that you are skiding and do not release hyd pressure to other wheel brake.

IMO if you have bcu 7, update to bcu 8.

If you still with bcu6 keep it, that is much better than 8. At least you command your brakes instead of the embraer engineers.

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Hi (Username Protected),
Thanks for your comments.
We missed upgrading SB500-32-0020, but we still have BCU6 and we are satisfied.
(Username Protected)

[Username Protected]

Let me start by saying our technique for landing the P100 (-06) with the least amount of Phenom Shuffle, is to land….pause, let the plane settle down, then brake hard with significant forward yoke to get maximum directional control and lose lift keeping significant pressure always on both rudders. Stay on the center of the center line. If the tires hit the paint ABS comes on and/or plane then veers to side with effective brakes. The pause makes a big difference vs. other jets I’ve flown, were the wheels spin up and then do their thing with no drama.
It appears what they did with the -08 is put the “pause” in the computer and the first time, not expecting it, it is very disconcerting. We installed the -08 and after doing some taxi testing and a landing. The lag that was probably a second or so of zero brake effectiveness…but it felt like an eternity. Sent it back. The second -08 did the same thing. You brake hard and nothing, zero…and then the brakes come on hard. We haven’t gotten an answer to exactly what EMB did with the -08 vs. previously attempts but it appears they built this “pause” into the computer. Once you expect it, it’s fine and the phenom shuffle appears to be reduced slightly. You do have to be careful around the ramp or turning off the runway. To avoid the lag, and moment of anxiousness, you need to drag the brakes slightly before you plan on turning, otherwise, brake delay, then hard brakes come on, and if you’re turning, quick hard turn.
Hope that helps.

(Username Protected), thank you. After all the experience they've had now with brake-by-wire, I wonder why Embraer still can't seem to get it right. Aren't the engineers talking at all to the pilots?

[Username Protected]

(Username Protected), thank you. After all the experience they've had now with brake-by-wire, I wonder why Embraer still can't seem to get it right. Aren't the engineers talking at all to the pilots?

If you have the opportunity to meet in person the engineer that work with that brake software, you will find out by yourself why it does not work properly… looks like an IT guy. Well it’s impossible to fix something if you don’t assume that you missed something.

[Username Protected]

If you have the opportunity to meet in person the engineer that work with that brake software, you will find out by yourself why it does not work properly… looks like an IT guy. Well it’s impossible to fix something if you don’t assume that you missed something.

Does anybody know somebody in Senior Management at Embraer? Can we not go up the food chain and kindy ask them to review the software with pilot feedback? Am I dreaming? It would give Embraer a chance to stick it to everybody again and they would probably like that.