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Throttles not at idle on landing

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Hi everyone I have noticed this for years and just put up with it but thought someone might know what the problem is. When I land and pull the throttles to idle there remains some residual thrust in the engines until I push the throttles forward a bit again and then back to idle.

It only happens with the PMDG B737. I have the PMDG B777 plus TFDi B717, Flight 1 Mustang, Vertex DA62 and have no issues with any other aircraft.

 

 

Regards

Barra

i7 7700K, 16GB 3200MHz DDR4, GTX1070 OC 8GB, 1TB Samsung SSD for OS and P3D4.4, W10 64Bit, Corsair H115i Water Cooling

Barra, what is your "residual thrust", resp. which N1 value do you read? Sure you disabled A/T on manual approach(?). 

  • Author

Hi Pegaso, residual thrust is about 31%N1.  Yes A/T is off at around 1000' agl as is A/P.

 

Regards

Barra

i7 7700K, 16GB 3200MHz DDR4, GTX1070 OC 8GB, 1TB Samsung SSD for OS and P3D4.4, W10 64Bit, Corsair H115i Water Cooling

  • 1 month later...
  • 4 weeks later...

As above. FADEC logic is such that in the air on approach, FLIGHT IDLE is about 31-32%%. The autothrottle will put it up to 42% quite often even when you want to slow to final speed, which is a bit annoying if you are still trying to get your final flap out and the magic 1000aal company limit is looming...

Anyway, once WOW is sensed, Ground Idle is enabled. This is more 23-25% and (always dependant on airflow through the fan).

Try just leaving them back and watching the N1 drop after landing. 

Mark Harris.

Aged 54. 

P3D,  & DCS mostly. DofReality P6 platform partially customised and waiting for parts. Brunner CLS-E Yoke and Pedals. Winwing HOTAS and Cougar MFDS.

Scan 3XS Laptop i9-9900K 3.6ghz, 64GB DDR4, RTX2080.

B737NG Pilot. Ex Q400, BAe146, ATP and Flying Instructor in the dim and distant past! SEP renewed and back at the coal face flying folk on the much deserved holidays!

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