Flying in -FZRA

[lostaviator]

Found it.
Wording in V-1:
Takeoff into known freezing drizzle and/or light freezing rain is outside of the flight envelope for which any airplane currently operating today is certificated. Not only is it unwise to operate in such conditions, it is also unsafe, and based on the best information available at this time, also illegal.

Changed wording in V-2 (the next issue of the newsletter).
TCCA continues to collect and analyze data in consultation with other authorities worldwide in an effort to enhance present day knowledge regarding the safety of flight in conditions of freezing drizzle and/or freezing rain.

[Ki-ll]

I'll be sure to let Flight Ops know tomorrow that there is no aircraft certified for flight in freezing rain, as claimed a couple of times in this thread. I'm sure it will be news to them.

It does not look like no airplane is certified for flight in FZRA/FZDZ, what it looks like is that no airplane is certified for flight in SLD conditions. Presence of FZRA and FZDZ does not positively confirm the existence of SLD conditions, so I think that's where all the confusion lies. I read that people are working on incorporating flight in SLD conditions into certification, but it has not happened yet.
Is there anything in your Operations Manual about flight in severe icing conditions beyond the capabilities of the de-icing/anti-icing systems?

[fanspeed]

I'll be sure to let Flight Ops know tomorrow that there is no aircraft certified for flight in freezing rain, as claimed a couple of times in this thread. I'm sure it will be news to them.

It does not look like no airplane is certified for flight in FZRA/FZDZ, what it looks like is that no airplane is certified for flight in SLD conditions. Presence of FZRA and FZDZ does not positively confirm the existence of SLD conditions, so I think that's where all the confusion lies. I read that people are working on incorporating flight in SLD conditions into certification, but it has not happened yet.
Is there anything in your Operations Manual about flight in severe icing conditions beyond the capabilities of the de-icing/anti-icing systems?

Freezing precip such as freezing drizzle or freezing rain are super-cooled large droplets.

[Ki-ll]

I'll be sure to let Flight Ops know tomorrow that there is no aircraft certified for flight in freezing rain, as claimed a couple of times in this thread. I'm sure it will be news to them.

It does not look like no airplane is certified for flight in FZRA/FZDZ, what it looks like is that no airplane is certified for flight in SLD conditions. Presence of FZRA and FZDZ does not positively confirm the existence of SLD conditions, so I think that's where all the confusion lies. I read that people are working on incorporating flight in SLD conditions into certification, but it has not happened yet.
Is there anything in your Operations Manual about flight in severe icing conditions beyond the capabilities of the de-icing/anti-icing systems?

Freezing precip such as freezing drizzle or freezing rain are super-cooled large droplets.

Yes they are.

[pdw]

I just witnessed a King Air t/o and land 1/2 hr later in -FZRA. I didn't think this was allowed. Correct me if I'm wrong.

Mud Farmer, you witnessed the King Air take off ... and that it landed later in the -FZRA ?

I've studied accident reports where witnesses say it was freezing on the cars, but that is sometimes after the fact. ie: Say the accident was at 4:30pm and you read "we saw ice on the car around 5pm as soon as we heard about the accident".

At the time of flightplanning things can be different. Plus, the pilot doesn't get the ice on his/her windhield if it is heated and the freezing starts while taxxiing.

Returning after a 1/2 hour in -FZRA sounds a bit like the 180 turn. Can you get the actual weather records for this station (at each end of that hour) in order to understand and discuss the observed data ? No need to identify the airport in question, just the available facts of the nearest metar(s).