IGH, very interesting post.
This is also from the same TC advisory circular:
In brief,
an aircraft is not certified to successfully complete a go-around without ground contact once it has entered the low-energy landing regime. For the purposes of this CBAAC, the low-energy landing regime is defined as:
- aircraft flaps and landing gear are in the landing configuration;
- aircraft is in descent;
- thrust has stabilized in the idle range;
- airspeed is decreasing; and
- aircraft height is 50 feet* or less above the runway elevation.
* Note: 50 feet is a representative value. A given aircraft may enter the low-energy landing regime above or below 50 feet in accordance with approved landing procedures for that type.
I may be wrong, but this appears to refer to that portion of the landing (while in the flare) just prior to runway touchdown. I believe the advisory is communicating to pilots that runway contact is probably unavoidable at this point in the landing.
This is a different thing from intiating a go-around once on the runway. However the delay in engine spool up is certainly a factor once on the runway, thus the decision to go around has to be made pretty quickly. In the landing scenarios we've been discussing (no spoilers or brakes prior to thrust reverser deployment), that should be possible in most cases. I stand to be corrected however.
However the subject of this advisory circular makes for interesting reading in light of a long float over a short contaminated runway.