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B737 EFIS instrument questions

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Old 23rd Nov 2009, 22:19
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B737 EFIS instrument questions

Helllo,

1.what ADC or IRS source if any provides data for the EADI Ground speed display, mach number???

2. Are the ADC and IRS tied in together, or are they seperate units???

thank you DW.
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Old 24th Nov 2009, 04:06
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What series 737 are we talking about here? Classic? New Generation?
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Old 24th Nov 2009, 04:18
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1. ADC-1 to captain's instruments, ADC-2 to FO's.

2. separate units I believe.
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Old 24th Nov 2009, 05:33
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EFIS ie 3/4/5
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Old 24th Nov 2009, 07:44
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That would be classic then. Classics are available with and without EFIS, therefore that term is somewhat muddled. The NG is only available with an EFIS, which further confuses things.

On the classics the groundspeed readout on the PFD comes from the FMC or IRS with the FMC being the primary source. The mach number comes from the respective air data computer.

The ADCs and IRS units are separate units in the classic models.

Last edited by Denti; 24th Nov 2009 at 08:00.
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Old 26th Nov 2009, 11:49
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If the 3/4/5 is Classic, what do you call the 1/2?
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Old 26th Nov 2009, 11:53
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That would be : Jurasic
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Old 16th Dec 2009, 07:12
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LoL..

as far as I know 1/2 is 'original'
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