OCS Flashcards
Define the Norfolk Island CTAF-R
That area of the Auckland Oceanic FIR within a 30NM radius of Norfolk Island extending to 9,500ft AMSL
When all available ADS-C connections with an aircraft are taken by other ground facilities what will result when a controller attempts to establish an ADS-C connection? What process should be followed?
An ADS-C DISCONNECT REQUEST message with ‘reason 1’ (congestion) will be received.
When an ADS-C DISCONNECT REQUEST is received by an ATSU which would normally have priority for an ADS-C connection, the current controlling authority should be notified. The controlling authority should resolve the situation.
What is the transfer of control (release) and RTF contact points for aircraft descending into NFTF from the Auckland Oceanic FIR?
- transfer of control shall be common lateral boundary or F245
- RTF contact point shall be the aircraft’s top of descent time unless coordinated otherwise
State the clearance limit for an IFR flight
- the aerodrome of first intended landing
- a significant point
- an airspace boundary
List the SEVEN examples provided in MATS where INCREASED separation should be applied
- when requested by the pilot or considered necessary by the controller
- a pilot reports severe turbulence or mountain wave activity, or is entering an area of known such activity
- the navigational accuracy of an aircraft may be impaired
- the failure of a navigation air reduces the capacity for frequent determination of position and speed
- an aircraft is experiencing communications failure
- an aircrafts performance is abnormal
- an aircraft is subject to unlawful interference
What actions should a controller take on becoming aware that the END SERVICE was not delivered or fails to trigger a disconnection?
The initial action should be to send another END SERVICE message. If this is also unsucessful the pilot shall be instructed to terminate the CPDLC connection and log on to the next unit
Describe what is meant by the terms active and inactive CPDLC connections? What are the connections referred to as?
A CPDLC connection is active if the ATSU and the aircraft can exchange CPDLC messages. The ATSU with which an aircraft has an active CPDLC connection is referred to as the current data authority (CDA).
A CPDLC connection is inactive if the ATSU and the aircraft cannot exchange CPDLC messages. The ATSU with which the aircraft has an inactive CPDLC connection is referred to as the Next Data Aucthoriy (NDA)
MATSOS states controllers should manage CPDLC connections to ensure a certain requirement is met. What is this requirement?
That CPDLC connections are managed to ensure that the ATSU with control for the flight holds the active CPDLC connection
What longitudinal separation standards may be used in the oceanic environment between aircraft climbing, descending or maintain the same level on the same track?
- T15
- T10 RNP
- T10 MNT
- T5-9 MNT
- D50 RNP
- D30 RNP
Describe the controllers responsibilities when OCS displays and Actual/Imminent conflict alert
Immediate resolution is required
When are pilots required to downlink a CPDLC position report?
pilots are required to downlink a CPDLC position report to the next ATSU after the completion of:
- an initial CPDLC connection (when inbound from an area not providing CPDLC services)
- a CPDLC connection transfer
- when crossing an FIR boundary
Define clearance limit
The clearance limit shall be the aerodrome of first intended landing, significant point or an airspace boundary.
Where the pilot intends to carry out an instrument approach at more than one aerodrome, the clearance limit shall be the aerodrome at which the first instrument approach is to be flown.
Where the pilot intends to operate in an operating area such as a MOA, the clearance limit shall be specified as the operating area or other suitable point.
When an aircraft intends to leave controlled airspace, or subsequently re-enter the same or other controlled airspace on the same continuous route, the clearance limit shall be the aerodrome of first intended landing. Such a clearance or revisions to it shall apply only to those portions that are conducted in controlled airspace. Traffic information shall be provided for the portion outside controlled airspace.
What phraseology shall be used when it is not possible to clear a flight via the flight planned route or cruising level?
“(route and/or level) NOT AVAILABLE DUE (reason)(alternative route and/or level) ADVISE”
What actions must a controller follow when manually cancelling or deleting a flight plan?
- use the FPEA window for non-routine flight plan deletion
- prior to confirming flight plan cancellation/deletion in the pop-up confirmation message, check the aircraft position on the ASD
What phraseology is used by the transferring controller for an approval request?
“APPROVAL REQUEST (aircraft callsign, level) VIA (signification point) (any other relevant details)
