OTS Flashcards
OTS
Most significant route structure within North Atlantic (NAT) MNPS airspace
Regulates the traffic flow east and west bound
MNPS
Min nav performance specifications
MNPS airspace extends from and max and min FL
Extends from FL285 to FL420
Max cruise levels = FL290 to FL410
Extends from 27* to 90*N
Operator guidance on MNPS can be found in
North Atlantic operation and airspace manual (NAT doc 007)
MNPS airspace control areas
Reykjavik Shanwick Ganda Santa Maria New York
Class A airspace above FL55 - lowest FL = 60
A/c system req for MNPS
2 serviceable LRNs An IRS An INS A GNSS An accurate time piece
Special routes have been setup for a/c that do not fit the req
OTS 2 major alternating flows and peak times
Westbound departing Europe in the morning - peaking between 11 30 and 1900
Eastbound flow departing N america in the evening peaking between 0100 and 0800
Westbound - most northerly route
Route A
How is shanwick different to the others
Req a clearance - can’t enter without it
Others you can enter but must remain at the FL given in your domestic clearance
Most southerly route going east
Route Z
How is the OTS constructed - callobrative decision making
Info from the operators is sent to the oceanic control centre (OACs) - PRM = preferred route message
Proposed tracks are then published on an internet site for discussion - 1hr to discuss proposal
The agreed OTS is published on the NAT track message using AFTN
Time limit for operators to submit their desired tracks
No later than 19.00 for the following daytime
10.00 for the following nighttime
NAT track message is usually published
At 22.00 and 14.00
Gives full details of the tracks and FL to be used
Hours of validity of the OTS
Daytime = 11.30 to 19.00 at 30*W
Nighttime = 01.00 to 08.00 at 30*W
Tango routes and LRN req
Between Northern Europe and Spain, canaries and lisbon
Tango 9 = 1 LRN
Tango 213 = 2 LRN
NARS
North American routes
Predetermined routes which join North Atlantic oceanic and North American domestic airspace - link major American airports
Canadian domestic track system - 3 track systems
Northern control area tracks (NCAs)
Southern control area tracks (SCAs)
Northern organised track system (NOROTS)
Provides links between Europe and central and western parts of North America
WATRS
West Atlantic route system
Network of routes linking USA and Canada with Bermuda, Bahamas and the Caribbean
Operate in the New York oceanic control area
NERS
North Atlantic European route system
Routes between NAT oceanic and European domestic airspace
SOTA/NOTA/GOTA/BOTA
Transition areas - dedicate airspace to get your levels from domestic clearance to oceanic clearances
SOTA = Shannon NOTA = northern BOTA = Brest GOTA = gander
