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  • I don't know for sure what the question writer means by "controlled turn knob".

    On the BAe 146 there was a knob on the autopilot control panel labelled "ROLL". What this actually did was to enable you to control the bank angle directly. It was spring loaded to centre...
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  • Ortac
    replied to Question 220816 - PFD
    This is true only for a PFD fed by an air data computer which incorporates position error correction.

    The Boeing standby EFIS (ISFD) does not incorporate position error correction. EFIS in light aircraft do not usually incorporate position error correction either. For any EFIS which does...
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    Last edited by Ortac; 07-12-2017, 11:47.

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  • Ortac
    replied to Question 220816 - PFD
    The difference (if any) between IAS and CAS is due to instrument error and position error. With modern electronic instruments the air data modules which measure the pitot and static pressures are very accurate, so instrument error is negligible. To correct for position error requires angle of attack...
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    Last edited by Ortac; 03-12-2017, 14:20.

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Ortac
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Last Activity: 14-12-2017, 22:57
Joined: 21-12-2009
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