One thing I've always wondered about, at most large US airports like ORD, JFK, IAD, etc, they list a published UNICOM frequency of 122.950. Would someone actually answer you if you called "Kennedy UNICOM" on 122.950 ? I'm guessing no and wondering why they actually have a published UNICOM frequency at these large airports ? DJ
http://www.airnav.com/airport/KJFK
http://www.airnav.com/airport/KORD
http://www.airnav.com/airport/KIAD
It might be monitored, but I doubt it. Most of the larger airports (take JFK for example) are
NOT GA friendly, and all other aircraft arriving are airliners who have their own company frequency, SATCOM, ACARS (to receive gate and connection information printed and read to pax onboard) or ramp control frequency.
I think ORD may be the same. ....but not IAD, since they accomidate many GA/charter/corprate aircraft and most likely monitor and use their unicom frequency, or the frequency used by the FBO [Signature or Landmark].
Most ARINC/UNICOM frequencies are posted for FBO's ("FBO, Fuel Providers, and Aircraft Ground Support" section of AirNav airport page) under "Contact information" on AirNav. ...you sometimes have to look down further than the general frequency information, since many airports that have those multiple FBO's use their own frequency.
Sample from Panorama @ HPN:
"ARINC 132.00
914-328-9800
888-359-7266"
IIRC, the A/FD only publishes the main unicom frequency (AirNav get's their data from the A/FD) so a good reference to have is a current
Acukwik (Link to Acukwik North America) which publishes the airport information in addition to FBOs on the field, the services they offer, and unicom/telephone frequency/number for each applicable FBO (and many other things...)
Jason