Centaurus, JT, all
Interesting comments to say the least. The cert numbers should never even shown anywhere. I feel they have little basis or foundation in reality, and just serve to confuse the issue. When was the last time your MLW 737-800 was on final at a sea level airport, ISA temp, flaps 40, at 140kts at the FAF?
In designing RNP procedures, specifically the missed and EO missed, a flight validation is required of the procedure. After seeing a few of these, it is something that every pilot should go thru, and at multiple locations. Flight val uses the assumption that putting one engine on idle, is the same as EO.
These procedures are coded, so the aircraft has everything it needs to know about the real-time conditions. Now see the momentary descent calcs, and actual climb rates.
The movement to MDA is certainly justified, but unfortunately, it was not followed thru on what the decision altitude should be, but simply leaves it up to the operator to decide when to initiate GA, and not bust the MDA.
The assumption of 50 foot momentary descent is a joke, for any aircraft, and even 100 foot is virtually impossible if one is EO.