A few points –
Kabir’s turbulence summary is faultless.
Pilots don’t advance the thrust levers on modern jets, autothrottles do after the pilots press the TOGA switches.
Most take offs are completed with the thrust reduced (derated) to a minimum level that still guarantees adequate performance. This allows greater time between major overhauls reducing down time. Every now and then it is a requirement that we carry out a full power take off to ensure that the aircraft systems are still capable of generating full power. Also some locations (eg my departure out of Funchal yesterday) require a full power take off for performance reasons. From this you can see that the smoothness of take off thrust application is not type dependant but dependant on circumstance.
Another factor worth considering is that short haul aircraft more frequently fly out of performance limited airports than long haul aircraft, eg Funchal, Aberdeen, Genoa, Guernsey, etc.
regards
wys
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