Question About Electronics above/below 10,000 Feet?

[RobertS975]

Is this 10K above ground level or above MSL? What is the practice at airports like DEN, SLC, MEX etc where 10K msl comes very quickly after takeoff?

[Speed Freak]

or VILH where the elevation is 11000 ft.

[A-3TWENTY]

Should be AGL.

SEQU 9220 ft (Quito,Equador)
Kumming , China , 6000 ft

etc,etc..

A320