What does the aircraft fright manual (deliberate misspelling) say? TCAS 1 or TCAS 2?
you mean "flight manual " I guess :-)
TCAS1 is not for airliners, and I do not think it is even manufactured anymore (someone can correct me if I am wrong.) , ICAO/FAA/Eurocontrol mandates ACAS which is TCAS2 .
And yes always follow the RA.
As said here already making visual assessment is no guarantee the one you see is the one giving you the RA.
In this case lots of spin for a known problem occuring quite often : not reducing rate of climb/descent before level off.
As far as I have heard of this incident, the DA50 was cleared to FL360 ( 1000 below the 737) but because of high rate this generated RAs..
Separation was in fact never lost .( as the graph shows ) I would like to see the BFU report on that one , and not Av Herald account .