newbie question re: Aircraft Scanning

[natedawg1604]

So I just recently got into aircraft scanning, and I have a newbie question.
The FAA listing via AirNav.com for an Airport in my local area (Rocky Mountain Metropolitan Airport/KBJC) includes frequencies labeled "IC", "LC/P" and "LC/S". What do these abbreviations refer to?

-Nate

 

[nd5y]

IC Initial Contact
LC/P Local Control Primary
LC/S Local Control Secondary

I think but not 100% sure on those.

 

[natedawg1604]

Is the AirNav.com data obtained only from FAA Airport/Facility Directories? It looks like the AirNav.com listing for the above-referenced airport includes a few frequencies which are not listed in the FAA's current digital Airport/Facility Directory. Does AirNav.com include data from other sources submitted by users, in addition to FAA data?

 

[nd5y]

I don't know where AirNav gets their data.
They have a section called FBO, Fuel Providers, and Aircraft Ground Support for most airports that usually has ASRI frequencies for the FBOs. That doesn't come from the FAA.

There is another FAA airport lookup site http://nfdc.faa.gov/nasr/airportLookup that for some airports has a few different or extra frequencies than what AirNav and the FAA digital Airport/Facility Directory digital — Airport/Facility Directory (d-A/FD) has

 

[DaveNF2G]

ASRI/ARINC/ACARS frequencies are licensed by the FCC.