Climb and Descent rates of Airliners

I like to play around with Flightradar and Flightaware and and today I came across a Qantas Boeing 747 flight from Sydney to Avalon near Melbourne. There are no 747 passenger services between these two airports, this flight was likely for scheduled maintenence of the aircraft or a cargo run, and being a short distance would've been light on fuel. 

Flightaware is excellent in that it archives up to the minute data on all airline flights including speed, altitude, coordinates, VS, etc. 

This particular flight managed some pretty impressive climb/descent rates....

The flight

Climb

Descent  - FL400 to 10,000ft in 8 minutes!