Freezing Fog
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Joined: Apr 2004
Posts: 794
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From: Rome
It depends. most de/anti icing devices will be able to protect you in -FZRA as well as most de/anti icing fluids will allow you some holdover time in this condition. It is often the case in northern Europe in winter time. Different story for moderate or heavy FZRA where airplane protective devices for approaches and fluids for departure might not suffice to grant you the required protection. The majority of anti icing fluids have no holdover guidelines for moderate FZRA and higher.
Joined: Oct 2002
Posts: 822
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From: In my seat
Intruder,
While not explicitly forbidden word by word, the aircraft is NOT CERTIFIED to fly in FZRA. That is why it IS explicitly mentioned that when entering FZRA, you need to find an escape asap.
And even IF you could land safely ( although your icing equipment will not cope and in case of go-around, there exists no data for a successful aerodynamic climb), how do you think the RWY and taxiways will be like...
We ask this scenario during command upgrades to see if the future Captain can think further than his/her nose is long...
While not explicitly forbidden word by word, the aircraft is NOT CERTIFIED to fly in FZRA. That is why it IS explicitly mentioned that when entering FZRA, you need to find an escape asap.
And even IF you could land safely ( although your icing equipment will not cope and in case of go-around, there exists no data for a successful aerodynamic climb), how do you think the RWY and taxiways will be like...
We ask this scenario during command upgrades to see if the future Captain can think further than his/her nose is long...
Joined: May 2000
Posts: 3,204
Likes: 2
From: Seattle
OTOH, if there is no other feasible place to land, you may have to do it anyhow. While I do not advocate intentionally flying into a known area of freezing rain, it might be necessary at some point if your career. Also, inherently, landing/go-around performance is significantly better than takeoff performance because you land a a lower weight. You NEVER "have to" take off, but once you do, you eventually HAVE TO land...
FWIW, freezing fog is NOT the same as freezing rain/drizzle. However, it is usually very dense and can seemingly appear 'out of nowhere'. Expect Cat II/III visibility when it happens.
FWIW, freezing fog is NOT the same as freezing rain/drizzle. However, it is usually very dense and can seemingly appear 'out of nowhere'. Expect Cat II/III visibility when it happens.
Joined: Apr 2001
Posts: 121
Likes: 0
From: EGPH
Intruder,
Our Ops Manual, Part A, was what I was referring to with regards to the prohibition.
I've only encountered freezing rain on the ground in South Wales and I could barely walk along the pavement(sidewalk) and there was no way I was going to drive a car.
Landing at airport affected by FZRA would be pretty uncomfortable.
Our Ops Manual, Part A, was what I was referring to with regards to the prohibition.
I've only encountered freezing rain on the ground in South Wales and I could barely walk along the pavement(sidewalk) and there was no way I was going to drive a car.
Landing at airport affected by FZRA would be pretty uncomfortable.
