For those of you using your iFly with a Skyradar or Navworx ADS-B unit, or those contemplating buying one, the FAA just issued the following notice:
New ADS-B Terminal Services Are Available Now
Notice Number: NOTC3486
Attention Pilots
New ADS-B Terminal Services Are Available Now 
Pilots who use the terminal airspace listed below can now receive free traffic and weather information in the cockpit. To receive these services, aircraft must be equipped with an Automatic Dependent Surveillance - Broadcast (ADS-B) transmitter/receiver or transceiver and a cockpit display of traffic information (CDTI).  
Service Volume Name - Airport ID  
Atlanta - ATL 
Atwater-Castle - MER  
Bakersfield - BFL  
Barksdale AFB - BAD  
Baton Rouge - BTR  
Beaumont - BPT  
Bradley-Windsor Locks - BDL  
Burbank - BUR  
Fort Lauderdale-Hollywood - FLL  
Fresno - FAT  
Ft Myers - RSW  
Gainesville - GNV  
Gwinn (KI Sawyer) - SAW  
Houston-Hobby - HOU  
Houston-Intercontinental - IAH  
Jacksonville - JAX  
Kansas City - MCI  
Lafayette - LFT  
Lake Charles - LCH  
Los Angeles - LAX  
Marysville-Beale AFB - BAB  
Merced - MCE  
Miami - MIA  
Minneapolis-St. Paul - MSP  
Mobile - MOB  
Monroe - MLU  
Monterey/Fort Ord Marina - MRY  
NAS Whiting Field (Milton) - NSE  
New Orleans - MSY  
Oakland - OAK  
Ontario - ONT  
Orlando - MCO  
Palm Springs - PSP  
Patrick AFB - COF  
Pensacola - PNS  
Pensacola NAS -- NPA  
Pittsburgh - PIT  
Richmond - RIC  
Sacramento-McClellan - MCC  
San Francisco - SFO  
San Jose - SJC  
Sanford - SFB  
Santa Barbara - SBA  
Santa Maria - SMX  
Sarasota-Bradenton - SRQ  
Savannah - SAV  
Seattle-Tacoma - SEA  
Shreveport - SHV 
Stockton - SCK  
Tampa - TPA  
West Palm Beach - PBI  
The new services include: 
Flight Information Service - Broadcast (FIS-B), which provides pilots and flight crews with a cockpit display of aviation weather and aeronautical information via Universal Access Transceiver (UAT) equipment on 978 MHz.  Note:  FIS-B is not compatible with 1090ES avionics. 
The following FIS-B weather products are for advisory use only.  The information provided by FIS-B can not be used in compliance of any regulatory requirement.   Pre-flight weather briefings and in-flight weather updates must be obtained through FAA approved sources only. 
o        Aviation Routine Weather Reports (METARs). 
o        Special Aviation Reports (SPECIs). 
o        Terminal Area Forecasts (TAFs) and their amendments. 
o        NEXRAD (regional and CONUS) precipitation maps. 
o        Notice to Airmen (NOTAM) Distant and Flight Data Center. 
o        Airmen’s Meteorological Conditions (AIRMET). 
o        Significant Meteorological Conditions (SIGMET) and Convective SIGMET. 
o        Status of Special Use Airspace (SUA). 
o        Temporary Flight Restrictions (TFRs). 
o        Winds and Temperatures Aloft. 
o        Pilot Reports (PIREPS). 
o        TIS-B service status. 
Traffic Information Service - Broadcast (TIS-B), which enhances a pilot's visual acquisition of other traffic on 978 UAT and 1090 MHz Extended Squitter (1090 ES). 
TIS-B is an advisory only service.  Pilots must continue to exercise vigilance to “see and avoid” other aircraft in accordance with Title 14 of the Code of Federal Regulations Section 91.113b.
The following table lists which type of data link is required to receive TIS-B and FIS-B services: 
If the aircraft is equipped with the following data link…  
Then the pilot can receive the following services…  
978 MHz Universal Access Transceiver (UAT)  
TIS-B and FIS-B  
1090 MHz Extended Squitter (1090 ES)  
TIS-B  
The FAA encourages users of TIS-B and FIS-B to report any irregularities observed while using the services. Reports should contain the following information: 
1.       Time of observation. 
2.       Location. 
3.       Type and identity of the aircraft. 
4.       Description of the condition observed. 
5.       Type of avionics system and software version used. 
You can report issues by contacting the nearest Air Traffic Control (ATC) facility, Flight Service Station (FSS) facility, or by submitting FAA Form 8740-5, Safety Improvement Report, available from FSSs, Flight Standards District Offices, or general aviation fixed-based operators. 
When the service is not available, as result of a service volume network being out of service, the service condition will be NOTAMed as NOT AVBL. 
EXAMPLE -    !PHL PHL SVC TRAFFIC INFORMATION SERVICE BROADCAST NOT AVBL
Additional information about ADS-B services can be found in the Aeronautical Information Manual at the following link:  http://www.faa.gov/air_traffic/publications/ATpubs/AIM/
For more information about the FAA’s ADS-B program, visit http://www.ads-b.gov. 
Questions?     
Contact the FAA Flight Standards ADS-B Office at 9-AWA-AVS-ADS-Programs-AFS@faa.gov. 
Contact the FAA Aircraft Certification ADS-B Office at 9-AWA-AVS-ADS-Programs-AIR@faa.gov.