Blackbird Sims / Milviz Forum Archive

Right after landing, used reverser, I had an alarm sound in the cockpit. Outside it was not to hear. It did not stop, two tones, endless.
No indication on the panel, nothing in the red.

What was it?

Where can I stop this?

Why no indication on the panel if something is wrong sending such an intense warning?

Dan

I had his on one of my first flights, although it is not in the manual, if I am not mistaken this will be the trim alarm, it sounds when one of the trim axis is at one extreme of its travel, simply reduce the relevant trim input and the alarm ought to stop.

Hi,

Yes, it is the Elevator Trim alarm (not other trims).
It will sound either when:

1) On the ground, once battery power is ON, after 20 seconds, when Elevator trim is out of green zone.
2) On the ground, just after landing, after 20 seconds, same condition than above.

Tomas

I had this when i turn off the AP late before landing and the AP had tuned the trim out of the green zone!

That's correct.

The autopilot doesn't know whether or not the aicraft is on the ground and will keep sending commands to the servos.
Always remember to turn it off before or at DH (!)

Tomas

Great, thanks a lot. I did another short flight and landed and couldn´t repeat it. I have the trim programmed on the stick, so maybe on final I put a little too much up.

Dan

It was implemented after input from pilots, who also describe it annoying as hell. It's so loud they can use it as an exit signal for jumpers, because it can be heard in the cabin even with the engine at full power.
Reason for this is, that there were several accidents with Porters taking off misstrimmed, and the elevator authority was then too low to save the aircraft after takeoff. It's the button next to the compass where you can test it.

Very immersive feature. Btw is it correct that the test button works even with bat off? And hell it is loud yes

Cheers
T.

Nope, actually it is on the Bat Bus. So not correct in this regard.

That issue is already fixed. Coming on the next SP

Tomas