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Single Pilot Decision Making - Weather Diversion

Snoopy wrote:

You had bad luck with wx and did a good job especially considering all the stress with pax and getting new wx reports. Your video tells me to be extra vigiland with fuel/alternate planning during such wx conditions, take even prob30 into serious account and utilize a second IR rated pilot for such flights.

Well I’ve had experiences with TAF’s before, they sometimes aren’t accurate. (I obviously didn’t learn that lesson. Although I was never in the air to find out). With the time of the year such a flight was conducted, it was no surprise the front stalled.

I had the legal fuel on-board, although having any more would have made no difference. My passengers clearly wanted to be on the ground. But yes being vigilant with the weather is a priority and if you want confidence, take an instructor/examiner. Otherwise one day you’ll get caught short, just like I was.

Qualified PPL with IR SP/SE PBN
EGSG, United Kingdom

You had bad luck with wx and did a good job especially considering all the stress with pax and getting new wx reports. Your video tells me to be extra vigiland with fuel/alternate planning during such wx conditions, take even prob30 into serious account and utilize a second IR rated pilot for such flights.

always learning
LO__, Austria

Snoopy wrote:

How long was the planned flight time?
How many passengers where there? Was there another pilot? How many hours IFR and actual IMC did you have?
Was your planned arrival time in the 9999 NSW SCT015 window? What was your contingency if the weather remained RADZ BKN003?

The flight time was a little over 1hr 40 from blocks on to blocks off.
My estimated landing time was not forecast in the TEMPOs, but 1HR after the BECMG NSW.
I landed at 1011z into Southampton. I didn’t manage to get the aircraft to Stapleford till 1617z
I was the sole Pilot, I have had my IMCr since 2016. At least 30 hours+ I’ve never really used it in solid IMC till now.

Last Edited by pilotrobbie at 22 Nov 21:11
Qualified PPL with IR SP/SE PBN
EGSG, United Kingdom

How long was the planned flight time?
How many passengers where there? Was there another pilot? How many hours IFR and actual IMC did you have?

TAF AMD EGLC 100502Z 1005/1012 09005KT 5000 BR OVC005TEMPO 1005/1009 1400 RADZ BKN003 PROB40 TEMPO 1005/1009 0300 FG BKN001 BECMG 1009/1012 9999 NSW SCT015=

Was your planned arrival time in the 9999 NSW SCT015 window? What was your contingency if the weather remained RADZ BKN003?

Even if it costs 10000£ to land at Heathrow EGLL if it’s the only airport in the world with CAVOK that’s obviously better than crashing next to a grass strip while trying to save some embarrassment and landing fees.
It sounds so easy but people have killed them self in multi million dollar private jets because of this.

Last Edited by Snoopy at 20 Nov 23:22
always learning
LO__, Austria

pilotrobbie wrote:

I had first time flyers and didn’t know how they’d react to full blown IMC. That was my only worry – I wanted to make sure that they were comfortable at all times during the flight

Do passengers (even first time ones) really have a negative reaction to IMC, other than by transfer from the pilot? I haven’t had many different passengers in IMC, but it has always been a non-event or enjoyable. I’d say that worry over IMC is something that has to be taught during one’s PPL. What I’ve seen them get uncomfortable over is:

  1. Turbulence, whether in clear air or in cloud. Obviously convective cloud gives you both IMC and turbulence.
  2. Transfer from the pilot; they see me watch the leading edge like a hawk for icing, they get worried about that.
  3. Discovering there is no parachute in the plane.
  4. A go-around.

Easier said from my seat on the ground than done, but passenger comfort is a priority, but not the single priority. I always tell passengers to tell me if they feel not right, that the sooner they tell me, the better I can handle the situation (adjust air flow, cold, hot, land somewhere, …). And I do. I did a divert to “the airfield I see right there, tell me ATC, is it open?” for reasons of passenger developing a headache, feeling queasy/nauseous. And had a nice time on the ground afterwards. But when WX was a significant factor, I also told them stuff like “you want to get home today? take a commercial flight”. Or “I’m diverting to city-airport-with-ATC-and-ILS, after we land, you can take a train to home this evening or tomorrow morning (by which time I may be able to fly back to original destination anyway)”. And even though that has created some “I have to be back at my job” anxiety on the moment, it also has created a reputation of a safe(r) pilot with the right priorities, which means they come back to fly with me.

Obviously, I’m not perfect. E.g. there is one specific regular passenger that, on the ground, I get in energy-depleting arguments with on defending my decision-making. The “good” thing is that it never happens in flight; the ground stuff already eats into the F of IMSAFE (fatigue) and thus safety (margin), in flight would be downright dangerous.

ELLX

pilotrobbie wrote:

But the added pressure was the customs 24 hours before departure at Dinard. It made things a little bit more complicated as you have to give notice of your intentions and saying I am going to Stapleford, only to land at Cherbourg/Le Torquet then onto the UK I am sure would have confused the heck out of the French Authorities.

I wouldn’t worry at all about this. It’s not like you pass customs and then you have to “bugger out” of the country. If you landed at another french airfield, you’ve just been through customs limitations for nothing, and that’s it. The only real annoyance is you’d have to clear customs again from your other departure (which at Le Touquet wouldn’t have been an issue since they’re there all the time)

In addition to much of what have been said here, having preset minimas you adhere to would likely have helped, as you’d have been able to make decisions much faster.
I find having a think about eventualities before the flight (in addition to during, when there is a quiet moment) and what courses of actions to take helps a lot to make fast decisions.
On longer night flights, for instance, I set “checkpoints” along the route where a diversion (to a pre-chosen airport, I’ve surveyed the airports along the route with lights + fuel) is to be made if some conditions are not met.
For instance, from EGMC Southend to LFLY Lyon in the DA40 at night (winter) with headwind:
“If I haven’t managed to climb to FL160 by Lille and Forecast at destination + alternates indicates that no instrument approach will be required, , and I don’t have >= 1h15 FOB on arrival, I will divert to Lille, refuel, and reassess”
Then I would have a simliar checkpoints along the route. I set them stricter at the start and easing in the beggining, so that there is a correction to made, it’s made early. Obviously, towards the end, there is less and less uncertainty about your arrival so you need less “insurance”

I had a “similar” flight to what you did – left Dinard to EGSX (in a DA40) with very strong forecast winds, but I did play the flight a couple of times and had a few scenarios played out, and in the end a diversion had to be made to Southend, but given the preplanning there was little hesitation and the 3 passengers (whose first flight it was, some fairly anxious about it), all had no hesitations to fly after that.
The worst memory they have from that flight is Stansted asking us to increase (our already very rapid) rate of descent, and to watch out for a 747 that had just departed (we were in IMC).
Had I had to orbit around the field (or try to bash approaches), while asking ATC to find me a place with less, without a clear and assertive plan of action, they would probably have been spooked for good.

pilotrobbie wrote:

I need to use the IMCr more often, and also need to look at getting the full IR

Just curious, what could have changed in the trip if you had a full IR instead of IMCr?

Confidence-wise probably, yes but I am not sure if having more minima would help
Certainly, an IR could have opened more diversion options in France (but you can do that on IMCr anyway in emergency)

The core of the problem, IMHO is that we don’t train that much on flying the approach in the diversion airport (probably we should train there more than in what your do in your home airfield…)

Last Edited by Ibra at 20 Nov 13:23
Paris/Essex, France/UK, United Kingdom

Jujupilote wrote:

Thank you @pilotrobbie to show others how you reacted in such a situation.
You seem to have a great airplane, the AP definitely helped when making your decision. You clearly have the skills, the experience comes with errors You were very good at staying humble with your skills and capabilities.
It is also very useful to know the UK ATC system better.

Thanks for the feedback, sorry for the time it has taken to get back to this thread. Life had a different journey after this event that was more important than flying.

1) I flew to Dinard knowing full well that the weather the weekend into the early part of next week might throw up a few hiccups to our plans. We all departed Stapleford knowing that we could get stuck, but that we would make every reasonable effort to get home. It was obvious that the quickest way back for my passengers was to wait it out, the problem though was explaining why we could fly all the way here with no issues but have an issue flying back.

2) I spoke with a reliable FI/Examiner and he recommended flying along the coast to Le Torquet and waiting it out there, at least then it’s easier for my passengers to get back to London via a road/rail method. I elected not to fly due to the weather situation and how marginal it was. The decision not to fly was after telling my passengers the bad news, that a flight along the French coast with CB’s floating around wasn’t my type of thing due to a previously bad experience with CBs.

It would have made no difference as the weather in the UK was crap, and continued for a few days after. A friend who had flown in Saturday flew up to Jersey that Monday and told me the weather wasn’t particularly great and was closing back in just after I decided to scrap the VFR scud run to LFAT.

I cleared my head for the flight the next day.

3) Tuesday came and the TAF’s were acceptable for me, the only problem is by the time I had departed. The TAF’s had changed. I didn’t want to risk any flights near CBs and the potential for embedded stuff later in the UK. I have previous experience with frontal weather not moving, I should have learned from this experience.

4) My home base airport has no IAP. My alternate did, but I had never flown down to minima in full IMC conditions before – I took passenger comfort into consideration and safety for this one.

5) I took a huge amount of time deciding because I wasn’t sure I was confident to fly an approach down to minima, that’s why I choose Bournemouth over Southend and finally Southampton over Bournemouth; despite the later being a familiar airport for me.

6) In reality I should have also diverted when the communication issues cropped up on contacting en-route French ATC. It probably wasn’t sensible electing for a water crossing with that, but it seemed to be a French ATC issue rather than aircraft specific as I had no issues with Channel Islands/UK ATC. This probably unsettled me a little.

7) Then there was choosing a routing that would keep me VMC and outside of Class A airspace in France. There was lots of cloud that I avoided to remain legal, this was challenging but nothing too considerable. But with point 6) in mind, maybe then I should have just binned the flight and diverted to Le Torquet for a breather. This flight would have been more practical with a full IR, as it gives me much more options legally.

8) London Info really was a confidence boost. But I think the outbound controllers in France were amazingly efficient, so doubt I would have had any issues? But maybe I’ve not heard the horror stories.

9) I agree with regards to on-board weather, when I’ve flown in the flight deck on the observer seat of a commercial airliner. It’s interesting how helpful that radar return can be. Although it has it’s limitations. But yes METAR/TAF and precipitation data would be great.

10) This is what my FI/Examiner suggested I do; should have gone with that. But the added pressure was the customs 24 hours before departure at Dinard. It made things a little bit more complicated as you have to give notice of your intentions and saying I am going to Stapleford, only to land at Cherbourg/Le Torquet then onto the UK I am sure would have confused the heck out of the French Authorities.

Lessons learned -

I agree with the lessons learned; but there’s more to it. The fact they’ll never fly again is the fact my decision making took too long. This didn’t give them confidence, flying in IMC straight after probably wasn’t helpful. I think the delay of 24 hours, the radio issues, the diversion decision making and flying into IMC really wasn’t going to help my case when on terra firma. The final straw was the waiting around in Southampton for a break to fly back to Stapleford and the interrogation from border control.

I can’t blame them, but then I did explain the risks multiple times in the months leading up to this trip.

I need to use the IMCr more often, and also need to look at getting the full IR. All in all it will help boost my confidence which my passengers and FI/Examiner says I lacked. Obviously this isn’t a ticket to take more risks, but to actually be more prepared for what could happen when things go for a turn for the worst.

The action plan is definitely to fly more, post my experiences and become a far better safer pilot.

JasonC wrote:

In the end this was a combination of many things. Planning was obviously not ideal and the pilot was too much affected by his passenger. Not ideal to have launched given pilot preference/need for well above IR minimum weather.

In flight weather can be useful but in someways I get the impression he needed to talk to someone.

My focus was the obvious mental back and forward that all of these factors contributed to. We have all been there to one extent or the other.

But @Fuji_Abound is right that constantly asking for updated METARs was more a symptom of the problem than a way to solve it. Where there was no evidence of any positive trendis it meant the pilot is asking out of hope, not really for the actual info which he knew would still be bad. if, for example, you needed a particular vis figure to attempt the approach, regular updates can make sense. But that was not relevant here.

Some of the key errors that I made was allowing my passengers to make any input onto the flying side of things. More on that above. The decision to launch was that there was a window to get my passengers home. Unfortunately this window dissipated as quick as the flight to London was.

Lessons learned for sure.

Last Edited by pilotrobbie at 20 Nov 02:08
Qualified PPL with IR SP/SE PBN
EGSG, United Kingdom

In the end this was a combination of many things. Planning was obviously not ideal and the pilot was too much affected by his passenger. Not ideal to have launched given pilot preference/need for well above IR minimum weather.

In flight weather can be useful but in someways I get the impression he needed to talk to someone.

My focus was the obvious mental back and forward that all of these factors contributed to. We have all been there to one extent or the other.

But @Fuji_Abound is right that constantly asking for updated METARs was more a symptom of the problem than a way to solve it. Where there was no evidence of any positive trendis it meant the pilot is asking out of hope, not really for the actual info which he knew would still be bad. if, for example, you needed a particular vis figure to attempt the approach, regular updates can make sense. But that was not relevant here.

EGTK Oxford

Jujupilote – I think you are absolutely right, in many ways the more information the better. However, I guess my point was that it is not essential. More often than not if the weather is poor you find very few flying (if any). I bet London Info had almost no business at the time we watched. Also, as I commented earlier, although there can be a temptation to keep on asking for METARs in the hope they have improved, it is usually unnecessary. On the whole (I know not always) really low bases come with stagnant air and changes are therefore slow. However, you are right, in an ideal world having weather in the aircraft must be a good thing.

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