federal aviation administration presented by: dennis addison, faa date: february 8, 2012 socm-2...
TRANSCRIPT
Federal AviationAdministration
Presented By: Dennis Addison, FAADate: February 8, 2012
SOCM-2 Seminar
Data Link Benefits
Federal AviationAdministration
SOCM-2
February 8-10, 2012
Satellite Data Link Benefits• Aircraft message exchange time is reduced.
– FAA HFRO clearances must be delivered within 3 minutes.– Actual Communication Performance (ACP)
• Total time required by the communication transaction
• Begins when the CPDLC uplink message is sent to aircraft
• Ends when the WILCO is received
Federal AviationAdministration
SOCM-2
February 8-10, 2012
Satellite Data Link Benefits• Data Link communications provides a direct
link to the aircraft.• Third Party HF Radio relays are removed.
– Safety is increased when messages are not repeated by a third party.
– Errors can occur each time a message is verbally repeated.
Federal AviationAdministration
SOCM-2
February 8-10, 2012
Satellite Data Link Benefits
• More frequent and accurate position reports are received via ADS-C.
• ADS-C contract rate can be increased in emergency situations.
• Event contracts alert ATC when aircraft are deviating from their cleared profile.
Federal AviationAdministration
SOCM-2
February 8-10, 2012
Satellite Data Link Benefits• CPDLC clearances use a clearly defined
digital message set.
• The standardized clearance message set reduces the chance of misinterpretation.
• Readback/Hearback errors are removed.
• Route clearances load directly into the FMS.
Federal AviationAdministration
SOCM-2
February 8-10, 2012
200 Miles
60 Miles
Longitudinal Separation
Lateral Separation
10 Mins (~80 Miles)
30 Miles 30 Miles 30 Miles
Satellite Data Link Benefits• Oceanic Separation Standards are reduced.
Federal AviationAdministration
SOCM-2
February 8-10, 2012
Satellite Data Link Benefits• Satellite Data Link Communications are
more reliable than HF communications.
– HF Communications Atmospheric Conditions.
– Solar Flares
– Multiple ATC Facilities use the same frequency
Federal AviationAdministration
SOCM-2
February 8-10, 2012
Satellite Data Link Benefits
• Satellite Data Link reduces HF congestion.
• When traffic levels are high, aircraft may have to wait to transmit their messages.
• FANS equipped aircraft do not compete for band width on the HF frequencies under normal conditions.
Federal AviationAdministration
SOCM-2
February 8-10, 2012
Satellite Data Link Benefits
• Satellite Data Link makes more advanced procedure possible.– Dynamic Airborne Reroute Procedure (DARP)
• Allows Airborne Aircraft to obtain a new more efficient route.
– Tailored Arrivals• This procedure uplinks an Optimized Profile Descent to the
aircraft FMS.
– ADS-C CDP• This procedure allows a controller to Climb/Descend
another aircraft through the altitude of a blocking aircraft.
Federal AviationAdministration
SOCM-2
February 8-10, 2012