1201alarm, #1761
Re RAAS (or ROPS), I note the clarification.
Although these systems target the same safety issue the method and capability differ, particularly when evaluated against the questions at #1710.
Regulators and operators should be cautious when comparing them; small differences in systems, integration, and operation - procedures can have large consequences if not understood beforehand.
ROPS is a predictive system based on real time aircraft performance and the runway in use.
RAAS (Smart Landing) relates to a fixed distance or % of runway; it is reactive.
ROPS only requires a single GA procedure either in the air or on ground up to the last point of rejecting the landing (and of course the forward thrust lever position triggers the GA).
RAAS, depending on installation may require alternative procedures depending on situation and selects options.
On the ground ROPS advises crew actions against the assessed braking capability and predicted stopping distance, and may also increase the level of autobrake; RAAS only provides distance information.
ROPS is integrated with the aircraft systems and procedures; RAAS is an add-on where the differences have to understood in the context of the safety goal and operation.
https://www.eurocontrol.int/sites/de...safety-net.pdf
P.S. Does this operator use both systems? Would there be a desire to standardise procedures between fleets, ergo RAAS=ROPS thinking? Which, with inappropriate system comparison, could result in conflicting procedures.