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Originally Posted by Boslandew
(Post 10429622)
The whole crux of the matter is that helicopters operate from Penzance at sea-level and could and again will be able to operate IFR when the cloud is 300 ft above sea-level. Even with the most advantageous limits probable at Lands End with GPS approaches, they will need a cloud base of 700 ft above sea level. That 400 ft difference is what makes helicopters from Penzance so much more reliable than the fixed-wing service from Lands End.
You cannot fly a ‘Proceed VFR’ GNSS PinS approach with a 523ft AMSL OCA (not <300ft the observant will notice) in less than VFR destination weather +/-1hr eta, which for flight over water is a 600ft cloud ceiling. Well you probably can, but you’d need 2 IFR alternates meeting planning minima (+200m/400ft) as the destination weather would be below minima. Neither can you dive and drive over water to 250ft these days incase there is a large vessel. You can’t use radar to mitigate against this unless you are flying an ARA or offshore GNSS approach iaw a HOFO approval in which case passengers must be wearing survival suits and be HUET trained etc. So you have an ‘IFR’ approach designed to let one down to 523ft requiring VFR destination weather at Penzance (600ft ceiling and 1500m vis), hardly the weather resiliance game changer in low cloud and fog. Ah yes - Culdrose Radar... have you ever tried them at a weekend, or after 5pm, or during a bank holiday, or times of school holidays, or around midday... or whenever else they NOTAM it or just decide to shut - hardly the robust solution you want to rely on for your IFR separation. (P.s. in a 600ft cloud ceiling you don’t need to fly IFR to Lands End, you can fly VFR). |
insert 'like' emoji here..........................
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SARwannabe - you forget two other important factors. 1) If a ‘Proceed VFR’ PinS is to be flown at night over water you would need 1200ft cloud base for the VFR segment. 2) Lands End also has bright RTIL strobes & edge lighting directly lined up with the inbound track as you coast in at 600ft VFR bang on the APAPIs to a large runway. In marginal visibilities these often stand out as the first detail you see coasting in and they give you a warm fuzzy feeling. The MAPt on the Penzance Heliport plate is 1km from the nearest land, and any FATO lighting will be perpendicular to the inbound track. In 1500m vis at 600ft you would be lucky to make out sufficient detail to proceed with the goldfish bowl effect. Penzance would be a lovely place to operate from in good weather, convenient for customers off the train, save the drive to Lands End etc but I also don’t believe it offers anything real in terms of added weather resiliance without a proper IFR solution. They could presumably turn the ‘Proceed VFR’ to a ‘Proceed visually’ and bring the MAPt closer to the heliport which would help in poor visibility, but due to the rising ground in the missed approach the OCH would rise and it’s already above 520ft. Weather resiliance was the buzz word phrase for added support during the planning process. When modern day regulation changes were mentioned fingers went in ears. |
Time for some out-of-the-box thinking:
The helicopter service was convient, and it had an excitement factor. Why not have a hovercraft ?! Exciting, novel, fast and not subject to cloudbase :) |
DeltaNG: maybe you are just being provocative, but have you ever seen, or experienced, the sea states usual between Land End and the Scillies? Hovercraft might indeed be fast and not subject to cloud base, but they are even more subject to wave height than aircraft are subject to cloud height. They would not operate more than once a week on average and in some months not at all. The Dover Straits were a considerable challenge for the largest hovercraft, so the seas off Lands End will be completely prohibitive. I know whereof I speak, having been in the coastal shipping business for some 45 years.
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Originally Posted by highrpm
(Post 10431925)
I didn’t even know Sloanes have a 139 on their AoC. Well done. Are all the positions full? I haven’t seen them advertised anywhere.
They don’t.... AW139 and multi-pilot will all be brand new to their AoC :hmm: |
Yes pettinger: I'm trying to raise a little laugh.
I've flown over the seas between LND and STM for the last ten years, and seen some enormous seas. Not every day mind. Ok then - what about that Condor thing that they use in the Channel Islands? |
Originally Posted by DeltaNg
(Post 10432262)
Yes pettinger: I'm trying to raise a little laugh.
I've flown over the seas between LND and STM for the last ten years, and seen some enormous seas. Not every day mind. Ok then - what about that Condor thing that they use in the Channel Islands? |
DeltaNG:
Apologies that I missed your joke. (Though there have been dafter suggestions made in all seriousness elsewhere on Pprune) The mere fact that helicopters are considered a viable option at all is really because all other high-speed sea-going solutions are impractical on a regular basis because of the appalling sea conditions that often occur in the area. |
Has there ever been a proper study as to just how appalling the sea state is plotted against the appaling nature of the cloud/vis/wind etc ?
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Friend of mine who's a fairly hardy sailor admits to having felt distinctly queasy on the Scillonian...
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Originally Posted by DeltaNg
(Post 10431803)
Time for some out-of-the-box thinking :)
now mind the gap and move on...simple |
Penzance approaches
Originally Posted by SARWannabe
(Post 10429833)
Wrong. With respect, the whole crux of the matter is that people, including the planning committee and other stakeholders in Penzance Heliport, are unknowingly seeking advice from people who are out of touch with current CAT regulation and promising the undeliverable based on what the S61 once did. You cannot fly a ‘Proceed VFR’ GNSS PinS approach with a 523ft AMSL OCA (not <300ft the observant will notice) in less than VFR destination weather +/-1hr eta, which for flight over water is a 600ft cloud ceiling. Well you probably can, but you’d need 2 IFR alternates meeting planning minima (+200m/400ft) as the destination weather would be below minima. Neither can you dive and drive over water to 250ft these days incase there is a large vessel. You can’t use radar to mitigate against this unless you are flying an ARA or offshore GNSS approach iaw a HOFO approval in which case passengers must be wearing survival suits and be HUET trained etc. So you have an ‘IFR’ approach designed to let one down to 523ft requiring VFR destination weather at Penzance (600ft ceiling and 1500m vis), hardly the weather resiliance game changer in low cloud and fog. Ah yes - Culdrose Radar... have you ever tried them at a weekend, or after 5pm, or during a bank holiday, or times of school holidays, or around midday... or whenever else they NOTAM it or just decide to shut - hardly the robust solution you want to rely on for your IFR separation. (P.s. in a 600ft cloud ceiling you don’t need to fly IFR to Lands End, you can fly VFR). Regardless of that, whatever the weather conditions prevailing, because Lands End is at 400 ft elevation and Penzance is at sea-level, Penzance will always be better off. I flew the service for six years, (how about you?) made nearly 4000 round trips, IFR or VFR, in full accordance with CAA requirements including diversion fuel. Within the first year I lost count of the number of times we routinely flew our service while Lands End was closed due to weather. I have flown six of the twelve daily flights VFR with Lands End at 400 'grounded all day. Ask anyone in Penzance or Scillies who used the service and they will tell you which was and will be the most reliable. At the open meeting held in Penzance prior to final approval of the planning application speaker after speaker got up and said that, for example, (post Penzance helicopter service) that if they wanted to go to hospital on the mainland on a Monday in winter (no passenger boat in winter) they had to plan to travel on the previous Friday, with all the expense of a stay in Penzance over the weekend to make sure they made their appointment. One girl said she nearly missed her own wedding because it took her five days to get off Scillies via Lands End. Never happened at Penzance. |
The 139 isn’t operational yet. |
March 2020 I believe.
Their new hangar and helipad are close to completion, flew past there a week or so ago. |
It seems the AW139 is stuck in China so they will be initially using a 6 seater AW109SP
From their Facebook... “Our new service is launching on 17th March 2020, despite a delay to the arrival of the new AW139 helicopter, caused by current Chinese export restrictions linked to Coronavirus control measures! Despite these unforeseen delays, our scheduled flights will commence in one of our VIP AW109SP GrandNew helicopters! 🚁“ |
Originally Posted by TRENT210
(Post 10692306)
It seems the AW139 is stuck in China so they will be initially using a 6 seater AW109SP
From their Facebook... “Our new service is launching on 17th March 2020, despite a delay to the arrival of the new AW139 helicopter, caused by current Chinese export restrictions linked to Coronavirus control measures! Despite these unforeseen delays, our scheduled flights will commence in one of our VIP AW109SP GrandNew helicopters! 🚁“ |
“Our new service is launching on 17th March 2020, despite a delay to the arrival of the new AW139 helicopter, caused by current Chinese export restrictions linked to Coronavirus control measures!”
Interesting! I heard it’s because the 139 is still not on their AOC yet, as they’ve still not applied for it....?!? |
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