Manchester-Tenerife - Wallasey Departures?

[BAe 146-100]

Hey,

Many operators use the NOKIN departure out of Manchester going to Tenerife/Canary Islands which takes you into Wales. Monarch more often than not use the Wallasey which takes you out over Liverpool/Irish Sea and into the direction of Ireland. Why are they in particular deciding to this? And at what point are they turning South? I hear them being cleared direct to BAGSO which is just off the coast of Ireland.

A reason/explanation would be much appreciated!

Cheers
BAe 146

[yeoman]

Every flight is charged Navigation Charges for passing through various FIRs, UIRs and or National airspace. The charge is based on declared MTOW for the aircraft in question which is why many airlines declare and operate their aircraft at MTOWs below the manufacturers book figure.

Going to the Canaries, it is possible to avoid France, Spain and largely Portugal by flying on a "Tango" route, airways T16 etc, which are Oceanic airways, BAGSO being one of the Oceanic Entry points for Shanwick OCA. Thereafter you get doen to Santa Maria OCA and somewhere along the line rejoin the domestic airways set up. The obvious departure for that routing, well West, is via WAL VOR. It is a longer flight time and therefore burns more fuel but saves on Nav Charges. One of the many variables in maximising profit on a given flight.

They are also excellent on the 360 days a year there is some kind of French ATC "issue"!:E

[JustaFew]

Going oceanic may avoid a CTOT over more popular routes as well.