950 LATERAL SEPARATION PRACTICE FLASHCARDS

Comprehensive vocabulary-style flashcards covering lateral separation standards, GNSS minima, aircraft holding protected areas, and oceanic airspace reservation rules based on the Part 09 - Oceanic Control transcript.

Lateral Separation

Separation applied by requiring operation on different areas or geographic locations determined by ATS surveillance systems, NAVAIDs, or visual reference to the ground.

Fly By Turns

A turn initiated prior to the waypoint (up to $20\,NM$ before) based on a calculated radius; the aircraft track is expected to be on the inside of the waypoint.

Flyover Turns

A turn where the aircraft comes to the overhead of the waypoint before initiating the turn onto the next leg; the track is expected to be on the outside of the waypoint.

Geographical Separation (Visual Restriction)

Position information derived from visual reference to the ground shall not be used for lateral separation purposes if the aircraft is operating above $FL100$.

$175\,Knots\,IAS$ and less (Turboprops)

For non-holding aircraft, the protected airspace radius from the holding fix is $8\,NM$ at $6000$ feet, increasing to $12\,NM$ at $14000$ feet.

$230\,Knots\,IAS$ and less (Jets)

For non-holding aircraft, the protected airspace radius from the holding fix is $15\,NM$ at $6000$ feet, increasing to $18\,NM$ at $14000$ feet.

RNAV 1 Track Separation

Lateral separation of departing/arriving aircraft exists where the distance between tracks is not less than $7\,NM$.

RNP 1, RNP APCH, or RNP AR APCH Track Separation

Lateral separation of departing/arriving aircraft exists where the distance between tracks is not less than $5\,NM$.

Lateral Separation Measurement

Separation is measured between the routes and segments along which two aircraft fly, not between the aircraft themselves.

SLOP (Strategic Lateral Offset)

A procedure where pilots may offset from the centre line of their cleared route up to $2\,NM$ right-of-track without notifying ATC.

SLOP Altitude Mandate (Reykjavik CTA and Bodo OCA)

Aircraft shall not apply Strategic Lateral Offset Procedures below $F285$ in these areas.

GNSS Waypoint Definition

When waypoints use latitude and longitude, only half and whole degrees shall be used (e.g., $66N040W$, $7730N032W$).

7 NM GNSS Separation

Minima used below $F285$ if both aircraft are in direct contact with ATC on VHF (DCPC) and meet specific climb/descent or parallel track criteria.

23 NM Separation Criteria

Requires aircraft to be RNP 4, RCP 240, and RSP 180 approved with ADS-C position reports at Figure of Merit (FOM) $6$ or higher.

Iridium SATCOM Coverage

Under $23\,NM$ separation, this equipment allows separation to be applied in all of BIRD.

Inmarsat SATCOM Coverage

Under $23\,NM$ separation, this equipment allows separation to be applied only at and south of $80^{\circ}\,N$.

NAT HLA Certification Indicator

Indicated by the letter X (MNPS) in Flight Plan Item 10.

15 NM Domestic Airspace Reservation

The minimum lateral separation applied if the agency controlling the reserved airspace has confirmed in writing it will confine activity within the reserved airspace.

30 NM Oceanic Airspace Reservation

Applied between an aircraft/moving reservation and the limit of a stationary reservation if the aircraft meets NAT HLA MNPS and the agency guarantees to confine activities.

120 NM Separation (Oceanic Airspace Reservation)

Applied when the aircraft does NOT meet NAT HLA MNPS and the requesting agency has NOT guaranteed to confine its activities.