International Ops Flashcards
When are fuel freeze point temperatures provided?
From US departure stations when:
Long range flag flights above 78 degrees
Polar routes October 1 thru April 30
Whenever a route temps forecast -65 degrees
When can 207 minute ETOPS be used?
Available only for North Pacific north of 40 degrees N
May be used on flight by flight exception, only when weather or other conditions restrict use of 180 minute ETOPS
Dispatch must notify the Captain and provide rationale
When can 240 minute ETOPS be used?
Use limited to South Pacific
Time based on fire extinguishing and other system limitations
What is the relationship between hectopascals and millibars?
Millimeters of mercury?
Hectopascals and millibars are equal.
Millimeters, used in some regions, ARE NOT equal, and ATC should provide hectopascals upon request. If not, a conversion table is available in the FOM
QNH setting in the UK?
When cleared to descend from a flight level to an altitude, ATC will provide the airport QNH.
IMMEDIATELY set QNH value on all altimeters
What is QFE?
Not used at destinations served by United, but QFE is simply an altimeter indicating height above the runway. At touchdown, the barometric altimeter would read “0”
NEVER fly QFE heights. Always request QNH and fly an altitude
If A3008 on a METAR indicates an altimeter setting of 30.08 inches of Mercury, what does Q1008 indicate?
An altimeter setting of 1008 hectopascals, or 1008 millibars of pressure
When should you apply COLD WEATHER ALTIMETER CORRECTIONS?
Outside the U.S. and its territories and the OAT is colder than 0 degrees C (787 only)
Within the U.S., apply corrections only if directed by 10-7 page or notes on IAP page
Altimeter corrections apply IAF through MAP
What constitutes a Flag Operation?
Any flight that does not begin and end in the 48 contiguous United States
What is NAT HLA?
North Atlantic High Level Airspace
What is NAT OTS?
North Atlantic Organized Track System
Built twice daily
Between FL290 and FL410, with 1,000 foot vertical separation
Majority of tracks separated by 1 degree of latitude (60 nm)
What are PBCS tracks?
What is the separation?
What altitude?
Performance Based Communication and Surveillance
PBCS tracks are 1/2 degree of latitude, or 30nm
Operate FL350 to FL390
What is NAT DLM?
Requirements?
Altitudes?
North Atlantic Datalink Mandate
Requires aircraft in NAT DLM airspace to have additional CNS equipment such as CPDLC, RNP 4 capability and ADS-C
NAT DLM airspace exists FL350 - FL390
What are NARs?
North American Routes
Routes used between major airports in North America and the Atlantic Oceanic Control Area
Designated by number
What is CMNPS?
Canadian Minimum Navigation Performance Specification