alot of this debate came out of the crash of an ifr aztec back in the late 80s where the pilot cancelled ifr crashed on approach nobody knew what happened until the next aircraft on an ifr approach into the same airport reported it. cancelling ifr and holding alerting services is your protection against that ) and cancelling ifr and holding alerting is alslo the courtesy way expediting ifr traffic flow into /out of uncontrolled busy airports on vfr days of Here are a couple of typical conversations for those flying 703/704 in the north
scenario #1
ywg center c-grub
c-grub ywg
c-grub requesting descent
ywg atc > cleared out of controlled airspace in the vicinity of upper rubber boot Manitoba call thur 12500 we show no traffic between you and destination
c-grub cleared out controlled airspace in the vicinity of upper rubber boot Manitoba will call thru 12500
decent checks done decent ,begins decent ,approach briefing ( some sop's do it by distance. some by time to landing for app briefing. others before initiating decent ) and radio calls on 126.7 an after 12,500 call to ywg atc . thru say 11,000 presto vfr at the 2am
you
dont need to advise atc that you are cancelling ifr because you on an ifr itinerary atc will come looking for you at the expired time on the itinerary .It is very useful for when medics get delayed at clinics I used 2hour window for sar and update eta before you lose radio coverage with center.
the nice part of ifr itineraries is the re entry in to controlled airspace on the way south
>atc this c-grub
c-grub ywg go ahead
atc c-grub climbing thru 9000 looking to pick up the ifr to ywg
might need to get bit higher depending on sector to get pal coverage but atc knows your leaving upper rubber boot and expected to be in their sector of responsibility . getting transponder code is faster too ( most Times)
scenario #2
atc
c-grub is cleared out controlled airspace in the vicinity of Norway house minimum 100 mile safe ifr altitude out of Thompson is (I don't have the chart in front of me so chill )4000ft its a Cavok so you cancel ifr but hold the alerting and will call down on the triple 1888 number
the important thing to know is you cannot use an ifr itinerary if you are going to enter controlled airspace more than one exit and one re- entry ( yes i know the door is open on that one but ladies fly too and so lets step up our decorum gents )
Note some fss / controllers will not let you file IFR itinerary if on your descent out hi level controlled you pass thru a low level controlled sector even if briefly en route to the uncontrolled airport area around red lake to pikangikum / popular hill as an example comes to mind depending on direction inbound
finally its the peace of mind factor if you feel your company dispatch is unreliable which can happen in small operations when the owner/mgr been awake for days running on min rest and it 2am // the ifr itinerary allows you to go do the job into remote places or rural towns. knowing that when time is up on the iten atc will start making phone calls on your behalf to find you fly safe
