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9 votes

What is the difference between ADS-B UAT and ADS-B ES?

ADS-B UAT operates on 978 MHz and are available for aircraft that operate below 18,000 FT MSL. UAT transceivers can display aviation weather products (FIS-B) as well as traffic from ground radio ...
wbeard52's user avatar
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6 votes
Accepted

Was NextGen simulated/tested against alternatives?

NextGen is an FAA programme that strives to modernise America's air transportation system to make flying safer, more efficient, and more predictable. NextGen is not one technology, product, or goal. ...
DeltaLima's user avatar
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4 votes

Is ADS-B UAT required below 18,000 ft for ADS-B ES equipped aircraft?

No. ADS-B ES equipped aircraft do not have to have UAT to allow ADS-B UAT equipped aircraft to 'see' them. Below FL180, they are tracked by ATC radar and their track is translated and re-transmitted ...
Gerry's user avatar
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4 votes

To what extent is the HOST system still in use?

I was lucky enough to work a career that spanned all three systems:IBM 9020, IBM 3083 (HOST) and ERAM. HOST is no longer in use even as a backup. The backup system used to be a stand alone system ...
Iain's user avatar
  • 491
3 votes

Is ADS-B UAT required below 18,000 ft for ADS-B ES equipped aircraft?

Actually, aircraft broadcasting ADS-B Out on one frequency (say 1090Mhz) and equipped with ADS-B In, will receive traffic operating ADS-B Out on the other frequency (in this example, 978Mhz) via the ...
oldheloguy's user avatar
2 votes

What is the difference between ADS-B UAT and ADS-B ES?

If the aircraft will be flown above 18,000ft or in other countries with an ADS-B mandate, 1090ES is required. This applies to pretty much all "large" aircraft; they have no choice. However, the US ...
StephenS's user avatar
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1 vote

What are the negative associations with Continuous Descent Approach?

Here there is a list of possible meanings of this abbreviation. Most of the interpretations are completely reputable and legitimate but maybe "Crash-Damaged Aircraft" is both negative and aviation-...
h22's user avatar
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