LiveATC Discussion Forums
Air Traffic Monitoring => Listener Forum => Topic started by: BigRoidBoy on March 19, 2006, 03:30:50 PM
-
If a pilot requests, then climbs and reports reaching vfr-on-top and atc tells them to "maintain vfr-on-top" and then later encounter conditions requiring them to receive clearance through clouds will the pilot need to be recleared to their destination/clearance limit and receive an altitude to maintain or will they just receive an altitude to maintain? In other words, does a vfr on top clearance cancel an aircrafts ifr flightplan or does the flightplan remain open while the pilot maintains vfr conditions?
-
If a pilot requests, then climbs and reports reaching vfr-on-top and atc tells them to "maintain vfr-on-top" and then later encounter conditions requiring them to receive clearance through clouds will the pilot need to be recleared to their destination/clearance limit and receive an altitude to maintain or will they just receive an altitude to maintain? In other words, does a vfr on top clearance cancel an aircrafts ifr flightplan or does the flightplan remain open while the pilot maintains vfr conditions?
Hi there,
To answer your question "Does a vfr-on-top clearance cancel an aircrafts IFR flight plan?":
AIM 4-4-7, sub-para f states:
It is imperative, however, that pilots understand that clearance to operate "VFR-on-top/VFR conditions" does not imply cancellation of the IFR flight plan.
So as stated by the AIM, no, the IFR flight plan still remains active even after being cleared vfr-on-top or to maintain VFR conditions.
If the pilot later encouters weather less than VFR minima, I would say (not certain about it) that ATC would give a new altitude for the aircraft to maintain, and a route to fly similar to if you picked up IFR in the air. I haven't found the section in the AIM to confirm this, so I am not 100% positive.
I wouldn't say a new clearance limit needs to be issued though, per AIM 4-4-3:
a. Clearance Limit. The traffic clearance issued prior to departure will normally authorize flight to the airport of intended landing. Under certain conditions, at some locations a short-range clearance procedure is utilized whereby a clearance is issued to a fix within or just outside of the terminal area and pilots are advised of the frequency on which they will receive the long-range clearance direct from the center controller.
Hope this helps,
Jason
-
A new clearance limit is not necessary. Just an altitude to maintain. But one that follows the IFR altitudes... .. so, while flying VFR on top (OTP for strip-marking) obviously you'd be at say - 7500, 9500, etc.. but a new IFR altitude will probably get ya back to a hard altitude of 7000-8000-9000 etc...