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SOCM-2 Seminar GOLD Controller Procedures. Presented By: Dennis Addison, FAA Date: February 8, 2012. GOLD Controller Procedures. - PowerPoint PPT Presentation
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Federal AviationAdministration
Presented By: Dennis Addison, FAADate: February 8, 2012
SOCM-2 Seminar
GOLD Controller Procedures
Federal AviationAdministration
SOCM-2
February 8-10, 2012
GOLD Controller Procedures
• The GOLD guidance material “is intended to maximize operational benefits in data link operations by promoting seamless and interoperable data link operations throughout the world.”
Federal AviationAdministration
SOCM-2
February 8-10, 2012
• Procedures for the use of Data Link are covered in the GOLD and other ICAO Docs.
• The procedures for data link operations are very detailed and very developed over years of operational experience.
• There is not time to cover all of the procedures in this briefing.
• ANSPs and Operators utilizing data link should operate via the ICAO procedures.
GOLD Controller Procedures
Federal AviationAdministration
SOCM-2
February 8-10, 2012
• ICAO CPDLC Message Set, Doc 4444 Appendix 5
• GOLD 4.2.1.5: The controller should generally use standard message elements and should only use standard message elements when issuing a clearance.
• GOLD 4.2.2.2: The controller should only use a free text message when an appropriate standard message element does not exist and the intended use does not change the volume of protected airspace (i.e., not a clearance). Refer to paragraph 4.2.1.5 for issuing clearances.
Controller Procedures
Federal AviationAdministration
SOCM-2
February 8-10, 2012
• ICAO CPDLC Message Set and Responses
Controller Procedures
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SOCM-2
February 8-10, 2012
• Many Uplink/Downlink messages require a response.
Controller Procedures
Clearance messages require a
WILCO/UNABLE Response
Clearance requests require
a Response
• Failure to respond with a proper message will result in an Open Uplink or Downlink message.
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February 8-10, 2012
• It is very difficult to intervene on transmitted CPDLC message.
• Subsequent CPDLC messages may not be read before the initial clearance is acted on.
• Carefully ensure clearances are valid before issuing them.
• Voice may be used to intervene on a previously issued clearance.– DISREGARD CPDLC (message type) MESSAGE
BREAK (correct Clearance)
Controller Procedures
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SOCM-2
February 8-10, 2012
• Conditional Vertical Clearances• GOLD 4.2.3.1:
– The controller should precede conditional vertical clearances containing the word “AT” with UM 19 MAINTAIN [level] indicating to the flight crew to maintain their present level/altitude until the condition of the clearance is satisfied:
Controller Procedures
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SOCM-2
February 8-10, 2012
• Use caution with Cruise Climbs/Descents.• With a Cruise Climb/Descent an aircraft may
climb or descend within their assigned altitudes until they report leaving an altitude.
• With ADS-C altitudes are reported to ATC which may incorrectly indicate that another altitude may be assigned to an aircraft.
Controller Procedures
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SOCM-2
February 8-10, 2012
• Weather Deviations• Append Weather Deviation Clearances with
a report back on route.– This will arm the FMS to send a back on route when
the deviation is completed.
• Use caution when clearing an aircraft on a deviation direct to a point.– Possible Back on Route sent.– Ensure the protected profile is correct.
Controller Procedures
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SOCM-2
February 8-10, 2012
• ADS-C Emergency Messages• Aircrews can accidently activate ADS-C
emergency messages.• UM 169 CONFIRM ADS-C EMERGENCY• If the aircrew responds DM 3 ROGER DM67
ADS-C RESET, most systems will continue the flash emergency until a normal ADS-C message is received.
• The ADS-C demand report is very helpful in this case.
Controller Procedures
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February 8-10, 2012
• Relaying messages through a CPDLC aircraft. (GOLD 4.7.6)
• Do not use Clearance Message elements in a relay through a CPDLC Aircraft to avoid arming their FMS with a clearance for another aircraft.
• UM 169ap RELAY TO [call sign] [facilityname] [text of message to be relayed]
Controller Procedures
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February 8-10, 2012
• Data Link Network Failures.• There are different links of the network that
can fail with differing impacts• 4 Major DSPs
– MTSAT– SITA– ARINC– IRIDIUM– INMARSAT
Controller Procedures
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SOCM-2
February 8-10, 2012
• Data Link Network Failures.• Ensure a backup means to contact aircraft
exists.• Discontinuing ADS-C distance based
separation standards.• Have an plan in place to manage data link
network failures.• Increased RO workload.
Controller Procedures
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February 8-10, 2012
• ADS-C Monitoring for aircraft conformance.– Lateral Event Contracts– Level Range Event Contracts– Waypoint Event Contracts– Periodic Contracts
• ADS-C reported positions are Lat/Longs– Can makes it difficult to reconcile Out of
Conformance (OOC) Position reports.– OOC position reports must be reconciled.
GOLD Controller Procedures
Federal AviationAdministration
SOCM-2
February 8-10, 2012
