What does AAU stand for?

[akafrank07]

"A good lookout should be maintained, particularly in congested areas. Altitude clearances should be verbally cross-checked by both pilots and recorded on the AAU as they are received."

Could anyone tell me what AAU stands for in this context, i do remember seeing this before i just can't get it from the back of my head what it stood for?

[akafrank07]

can't see any applicable ones from that list thanks anyway

[Kiss My APU]

AAU = Altitude Alert Unit

Christ, a toddler 'd know that! Get back in those books NOW! Just can't get the staff these days... Shocking.

[flyingpony]

Altitude Alert Unit?

[akafrank07]

Cheers pony i recon thats it

[Wildbluewander]

Nah, i reckon' it's Attitude Alert Limit, permanently set to BAD in most cases