Detent position.
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Hi.
From manual:
"Slowly advance the throttles to the detent position and confirm 100% thrust is indicated by the thrust meters. If 100% thrust is not indicated at the detent position, continue to advance the throttles until 100% thrust is indicated."
And...
"Once the flaps are fully retracted, reduce the throttles back to the detent position and set the TTC switches to CLIMB, confirming that the engine TGT is not more than 470°C."
So, the power isn't reduced since it's already set? I configured it to light up the amber indicator on the dashboard to show me it's in that position.
Confusing, right?
Alan / From Brazil.
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The detent isn't a definitive position for takeoff thrust, it represents the minimum position that the throttles can be at for takeoff. If the throttles are moved to the detent position and the thrust meters indicate less than 100% thrust, then the throttles must be moved forward until 100% thrust is indicated. If the throttles are moved forward past the detent, then they would be moved back to the detent during the climb.
Mark - Just Flight
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@Mark The detent position can be noticed by a 'click' and the amber light above the HDG button being on, right? Having reached 100% (exactly 100%) on the Trust Index, I can release the brakes for takeoff. In this condition, I would only be limited to 470°C TGT (climb) and would reduce power only if I were approaching that limit, or am I wrong?
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For takeoff, the thrust meters must indicate at least 100% thrust. If 100% thrust is not reached, then the throttle may be advanced further until 100% thrust is indicated. If 100% thrust can not be reached, then the takeoff must be aborted.
For the climb, the throttles should be reduced back to the detent position (if not already there) and the TTC switches should be moved to CLIMB. The TTC will then limit the engine TGT to below 470℃. The pilot will then need to monitor the engines during the climb to ensure no limits are exceeded and can make small adjustments as necessary. The maximum continuous RPM in the climb is 98.5% LP and 108.5% HP.
The procedures for each stage of flight are also covered in the Handling Notes section of the F28 Professional Operations Manual (Page 227 onwards): https://downloads.justflight.com/products/JFF003039/F28_Professional_MSFS_Manuals.zip
With regards to the detent, the throttles are in the detent position when an audible 'click' is heard, the throttle animation can be seen to 'snap' into the detent, and the amber NAV TRANSFER FAILURE light will illuminate if the TO THRUST LIGHT option is enabled on the EFB.
Hope that helps.
Mark - Just Flight
