On one approach to GQNN not all that long ago, the First Officer was flying.
The reported wind was 'calm' but clearly there was an active windshear area on approach, as the airplane was well below the glidepath at 1000AGL, then high at 500AGL.
Yet, the young lad was flying....Vref.
Hmmm, me thinks, this should be interesting.
Approaching the threshold, clearly we are too high, so he goes around.
A proper decision.
Full marks for him.
I then suggest an automatic approach/land, as the landing runway was served by an ILS.
Sliding down the glidepath on the second approach, he notes the airspeed is Vref +40, decreasing to Vref+20 across the fence.
He wonders why...why so much airspeed at 500AGL?
Why indeed.
Simply because...the aeroplane is the superb Lockheed TriStar, and with its (IIRC) 16 accelerometers in the autothrust system, it absolutely does a better job.
And...another convert to the very best that there is...Lockheed TriStar.
He flies the next two sectors as well, and finds that he is no match for the Lockheed automatics.
When the chips are down, couple it up and watch PFM at work.
Takeoff?
See previous comments.
No additives are needed, nor necessary.
Lockheed...simply superb
It doesn't get any better.