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Entering thrust reduction altitude has no effect for me #272

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michjans opened this issue Dec 19, 2022 · 0 comments
Open

Entering thrust reduction altitude has no effect for me #272

michjans opened this issue Dec 19, 2022 · 0 comments

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@michjans
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michjans commented Dec 19, 2022

Aircraft Version

Development

Build info

{
    "package_version": "0.1.15-5",
    "fms_man_version": "HD-P000-1-15-5",
    "fms_bak_version": "HD-C000-1-15-5"
}

Describe the bug

It doesn’t see to matter which value I enter for “THR REDUCTION” altitude on the “TAKEOFF REF” page on the FMC. Mostly I enter 1500ft for both thrust reduction as acceleration height, but the thrust reduction always seems to happen much earlier, e.g. around 400 ft. And if it happens, the thrust is reduced to about 35%.

This seems to be the same issue, but it has been closed: #194

Expected behavior

I would expect the thrust not to be reduced before the THR REDUCTION altitude is reached.

Steps to reproduce

  1. Create new flight plan in FMC (doesn't matter from which airport)
  2. Enter departure procedure for take-off runway.
  3. Make sure all performance values are filled in correctly in FMC.
  4. Activate route and execute
  5. Enter values for THR REDUCTION and ACCEL HT on TAKEOFF REF page
  6. Take-off by pressing TOGA button.
  7. Note that at altitude of around 400 ft, thrust is reduced to around 35%.

References (optional)

This video demonstrates the problem:
msfs 787 thrust reduction

Additional info (optional)

No response

Discord Username (optional)

#4186

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