Search found 1269 matches

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by TripleDelta
Fri Mar 27, 2020 5:35 pm
Forum: Civil Aviation
Topic: De Havilland Aircraft of Canada News and Discussion Thread
Replies: 256
Views: 46375

Re: De Havilland Aircraft of Canada Returns to the Skies

Do you know the PW150C specifications as compared to the A? Pratt's site says nothing. More power or more efficiency, or both? Some different materials in the core (nickel alloys) and an additional stage on the power turbine (up from two to three). There's also talk about an improved compressor (th...

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by TripleDelta
Thu Feb 13, 2020 4:24 pm
Forum: Civil Aviation
Topic: IAD - ASCOT 6368 emergency landing a few minutes ago?
Replies: 9
Views: 1759

Re: IAD - ASCOT 6368 emergency landing a few minutes ago?

estorilm wrote:
AWACSooner wrote:
A330MRTT

Is that considered a transport?


It's in its name. Multi Role Tanker Transport

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by TripleDelta
Mon Feb 10, 2020 7:04 pm
Forum: Civil Aviation
Topic: Low QNH (!) cancels hundreds of flights in Norway
Replies: 25
Views: 8418

Re: Low QNH (!) cancels hundreds of flights in Norway

What nobody is mentioning is that a drop in air pressure also results in a restricted take off weight as engine performance is affected. When you take into account that 1013 hPA is viewed as average air pressure at sea level then 945 hPa is extremely low. In usual performance calculations each poin...

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by TripleDelta
Sat Feb 08, 2020 4:12 pm
Forum: Military Aviation & Space Flight
Topic: Croatia selects Israeli F-16s to replace their Mig-21s.
Replies: 81
Views: 14423

Re: Croatia selects Israeli F-16s to replace their Mig-21s.

CheckNorris wrote:
Did the Israelis got US approval this time? Did they backdate the the jets to their original configuration?


Nobody knows. Given the previous fiasco, the MoD is keeping its cards closer to its chest this time round...

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by TripleDelta
Tue Feb 04, 2020 2:58 am
Forum: Civil Aviation
Topic: Another Q400 nose-wheel collapse.
Replies: 23
Views: 6729

Re: Another Q400 nose-wheel collapse.

dinot wrote:
Too much assumptions, so let me steer you straight: aircraft was operated correctly and no prior abnormalities were observed.


No assumptions, merely an observation.

And please save your steering for someone else.

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by TripleDelta
Mon Feb 03, 2020 5:14 am
Forum: Civil Aviation
Topic: Another Q400 nose-wheel collapse.
Replies: 23
Views: 6729

Re: Another Q400 nose-wheel collapse.

The photo in the AvHerald link shows the forward nose wheel doors open; in the normal gear extension sequence, they close automatically once the nose wheel is down and locked. They do, however, remain open after a gravity release - and can also be opened on the ground using the same method (pulling ...

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by TripleDelta
Tue Jan 21, 2020 10:12 pm
Forum: Civil Aviation
Topic: A320-21 NEO Ground noise
Replies: 14
Views: 4871

Re: A320-21 NEO Ground noise

On startup, both the CSeries and NEO sound like wailing elephants... you can always tell when one is lighting up, even on a noisy apron.

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by TripleDelta
Tue Jan 21, 2020 1:04 pm
Forum: Military Aviation & Space Flight
Topic: Croatia selects Israeli F-16s to replace their Mig-21s.
Replies: 81
Views: 14423

Re: Croatia selects Israeli F-16s to replace their Mig-21s.

mig21umd wrote:
What is so different this time?


Nothing. Same minister, same cronies, same favors, same kickbacks.

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by TripleDelta
Tue Jan 21, 2020 8:15 am
Forum: Military Aviation & Space Flight
Topic: Croatia selects Israeli F-16s to replace their Mig-21s.
Replies: 81
Views: 14423

Re: Croatia selects Israeli F-16s to replace their Mig-21s.

mig21umd wrote:
Imagine the Israelis offer the Baraks again :rotfl:


They did.

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by TripleDelta
Wed Jan 01, 2020 1:30 pm
Forum: Civil Aviation
Topic: Il-114-300 Prototype
Replies: 33
Views: 7719

Re: Il-114-300 Prototype

When looking at the linked video one feature catched my eyes: the IL-114 has huge flaps spanning over a very large part of the wings. Caught my eye too; not just the span, but also the total area and extension angle. Almost looks like they designed the flaps and then added the rest of the wing as a...

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by TripleDelta
Mon Dec 30, 2019 11:13 pm
Forum: Civil Aviation
Topic: De Havilland Aircraft of Canada News and Discussion Thread
Replies: 256
Views: 46375

Re: De Havilland Aircraft of Canada Returns to the Skies

If a route consistently goes to 50 people then you need to get the 150 seat jet off of it unless the return trip is consistently worth a 150 seater. To do so at the last moment will cost you more than sending the 150 seater. Nobody said anything about last minute changes. On the contrary, as noted ...

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by TripleDelta
Mon Dec 30, 2019 8:33 am
Forum: Civil Aviation
Topic: Fokker 100 Crashes in Kazakstan
Replies: 99
Views: 27420

Re: Fokker 100 Crashes in Kazakstan

Slightly off topic but back in February I flew on a reputed airline A330 from Europe to Chicago. Temperature was just above freezing at take off and we did not de-ice. However on climb out a sheet of ice of around 2sqm (20sqf) developed on the trailing edge above the flaps and started to break off ...

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by TripleDelta
Mon Dec 16, 2019 10:27 pm
Forum: Civil Aviation
Topic: 2019-2020 Active Gulfstream G-II and G-III (G-1159) Tracking Thread
Replies: 78
Views: 7804

Re: 2019-2020 Active Gulfstream G-II and G-III (G-1159) Tracking Thread

ERAU1 wrote:
TC957 wrote:
Haven't these old noisy Spey-engined aircraft been banned from the EU ?


I believe so. Even with t he hush kits


In late 2018, I've seen both a non-hush kitted G-IIB (N4NR; now impounded at ZAG, but not on noise-related charges) and a QTA hush kitted G-III (N196CC) operational in Croatia.

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by TripleDelta
Fri Nov 29, 2019 4:25 pm
Forum: Civil Aviation
Topic: Condensation trails Turbobprop
Replies: 20
Views: 4017

Re: Chemtrails Turbobprop

crownvic wrote:
and now for something completely different and violating my own rule of "do not stray from the topic posts"..A ground contrail...


At the risk of adding "management support" to straying off topic, one of the most popular 737 shots in the database is this :) :

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by TripleDelta
Fri Nov 29, 2019 12:53 pm
Forum: Civil Aviation
Topic: Condensation trails Turbobprop
Replies: 20
Views: 4017

Re: Chemtrails Turbobprop

What's more, there's quite a bit photo and video proof online... here's some: https://www.youtube.com/watch?v=JaKBZLEBgK4 https://www.metabunk.org/attachments/e23f7d961e604d0d11e78128c24aadb4-jpg.15819/ https://live.staticflickr.com/2848/11608893625_d97dc53a50_c.jpg First Air ATR72 by Jason Pineau ,...

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by TripleDelta
Fri Nov 29, 2019 12:36 pm
Forum: Civil Aviation
Topic: Condensation trails Turbobprop
Replies: 20
Views: 4017

Re: Chemtrails Turbobprop

A380MSN004 wrote:
Can a turboprop such as ATR72 or Dash8-400 can create chemtrails contrails on certain flights ?


Pulled many a contrail on approach at 1000 ft AMSL...

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by TripleDelta
Wed Nov 20, 2019 6:51 pm
Forum: Civil Aviation
Topic: De Havilland Aircraft of Canada News and Discussion Thread
Replies: 256
Views: 46375

Re: De Havilland Aircraft of Canada Returns to the Skies

So run slower in winter, with less flights during the day. Run flat out in summer, more flights during day. During the winter, there's more overall slack in the network (not just ours, but also of our codeshare partners), so there's not need to fly at 340-350 knots to squeeze in every last flight p...

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by TripleDelta
Wed Nov 20, 2019 12:05 pm
Forum: Civil Aviation
Topic: De Havilland Aircraft of Canada News and Discussion Thread
Replies: 256
Views: 46375

Re: De Havilland Aircraft of Canada Returns to the Skies

So better to park an aircraft during a quiet time of year than keep all flying and reduce the number of sectors per day (and run those you keep a bit more fuel efficiently)? What makes you think the aircraft will be parked? Our machines do not sleep during the winter; if anything, they take up lowe...

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by TripleDelta
Wed Nov 20, 2019 3:00 am
Forum: Civil Aviation
Topic: De Havilland Aircraft of Canada News and Discussion Thread
Replies: 256
Views: 46375

Re: De Havilland Aircraft of Canada Returns to the Skies

Do you not vary it through the day? At peak time, its obvious you wanna get as many flights as possible. So between ~6am and ~10am, if that extra speed enables another sector to squeeze in at "peak time" - you gun it. Same for ~5pm to ~9pm. But outside of that, are load factors not typica...

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by TripleDelta
Mon Nov 11, 2019 6:25 pm
Forum: Technical/Operations
Topic: Cost of “fuel tankering”?
Replies: 94
Views: 7251

Re: Cost of “fuel tankering”?

Would probably need to be in the hundreds to justify it. If hundreds are needed to justify it, please find where this is done... 'cause I'm moving there ASAP, since somebody is obviously giving fuel away for free! I've done tankering flights with a profit as low as USD 5. Was below Maximum Landing ...

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by TripleDelta
Mon Nov 11, 2019 4:26 pm
Forum: Technical/Operations
Topic: Cost of “fuel tankering”?
Replies: 94
Views: 7251

Re: Cost of “fuel tankering”?

If yes maybe airlines should have calculations made if flying more fuel is actually the answer to saving money if it’s minimal cost difference at another airport. One other detail: airlines don't fly on the "YOLO LOL" model... the ops staff don't wake up in the morning and then randomly t...

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by TripleDelta
Mon Nov 11, 2019 4:19 pm
Forum: Technical/Operations
Topic: Cost of “fuel tankering”?
Replies: 94
Views: 7251

Re: Cost of “fuel tankering”?

I hope they are also calculating the stress to the airplane of landing heavy. Not overweight, of course, but I'd love to know how they calculate "wear and tear" per flight. If it's within manufacturer limits, it's a non issue. And after all, what's the difference between landing with a pa...

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by TripleDelta
Mon Nov 11, 2019 4:16 pm
Forum: Technical/Operations
Topic: Cost of “fuel tankering”?
Replies: 94
Views: 7251

Re: Cost of “fuel tankering”?

Ah ok thank you, I guess I read the article too fast, but rereading it doesn’t explain that the savings are after all the costs of carrying the extra fuel, especially to explain to non aviation crowd. Likely because the author doesn't understand it him/herself, and merely jumped on the very fashion...

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by TripleDelta
Mon Nov 11, 2019 4:15 pm
Forum: Technical/Operations
Topic: Cost of “fuel tankering”?
Replies: 94
Views: 7251

Re: Cost of “fuel tankering”?

I have not heard of this term before for commercial airlines, but of course knew it has been a common practice for a while now to save money. As an aside, direct savings are not the only point of tankering. In short haul and regional ops, for example, not needing to refuel at the destination can sh...

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by TripleDelta
Mon Nov 11, 2019 4:04 pm
Forum: Technical/Operations
Topic: Cost of “fuel tankering”?
Replies: 94
Views: 7251

Re: Cost of “fuel tankering”?

SRQLOT wrote:
Based on distance and time wouldn’t it be more then $51?


That's $51 after you tally the extra consumption due to the increased weight. You fly from A to B with extra fuel, return back from B to A - and when you land, you have 51 extra dollars "in pocket".

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by TripleDelta
Mon Nov 04, 2019 7:01 am
Forum: Civil Aviation
Topic: Delhi air so polluted planes diverting
Replies: 32
Views: 7975

Re: Delhi air so polluted planes diverting

ATRs and Q400s are only CAT II. If visibility gets too bad, they can't land. The Q400 is capable of CAT III, although don’t know about SpiceJet’s. https://www.bombardier.com/en/media/newsList/details.1450-bombardier-q400-crj700-fleet-at-horizon-air-certified-for-cat-iii-weather-limits.bombardiercom...

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by TripleDelta
Sun Oct 06, 2019 6:52 pm
Forum: Civil Aviation
Topic: De Havilland Aircraft of Canada News and Discussion Thread
Replies: 256
Views: 46375

Re: De Havilland Aircraft of Canada Returns to the Skies

Can be both fully loaded which lead to 1563kg total (i.e 20kg max per pax on a 78 Pax version Q400 fully loaded) or is there any limitation? If payload and fuel allow (that is, if there's room until MTOM/MRM - Maximum Ramp Mass) - and the floor loading is within limits - here's no problem. I rememb...

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by TripleDelta
Sun Oct 06, 2019 12:34 pm
Forum: Civil Aviation
Topic: De Havilland Aircraft of Canada News and Discussion Thread
Replies: 256
Views: 46375

Re: De Havilland Aircraft of Canada Returns to the Skies

A380MSN004 wrote:
The maximum bagage capacity in the actual Q400 (78 pax) is 1150kg overall ?


1150 kg (standard size aft hold) + 413 kg (forward hold).

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by TripleDelta
Sun Sep 22, 2019 4:34 pm
Forum: Civil Aviation
Topic: De Havilland Aircraft of Canada News and Discussion Thread
Replies: 256
Views: 46375

Re: De Havilland Aircraft of Canada Returns to the Skies

I always wondered why the 2L door is rarely used what is the reason ? Two main reasons: the door frame is pretty small (since 2L is essentially a service door) and it's VERY easy to bang one's head passing through... and the optional aft air stair takes up measurable space in the galley (which is a...

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by TripleDelta
Sun Sep 22, 2019 7:08 am
Forum: Civil Aviation
Topic: De Havilland Aircraft of Canada News and Discussion Thread
Replies: 256
Views: 46375

Re: De Havilland Aircraft of Canada Returns to the Skies

such as 4000-5000 hours per year To expand on this point further: in high-intensity regional ops, a significant amount of time is "lost" during ground stops since there are quite a few of them during the average day. Hence, the highest flight time can be achieved by flying long flights wi...

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by TripleDelta
Sun Sep 22, 2019 6:12 am
Forum: Civil Aviation
Topic: De Havilland Aircraft of Canada News and Discussion Thread
Replies: 256
Views: 46375

Re: De Havilland Aircraft of Canada Returns to the Skies

4000-5000 hours per year For that to be even physically possible, the year would have to be 600+ days long (365 days times 24 hours is 8760 hours). OU, for example, has one of the highest Q400 utilization rates worldwide - and their examples clock around 2500 hours a year. At peak times, this could...

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by TripleDelta
Mon Sep 09, 2019 7:19 pm
Forum: Civil Aviation
Topic: De Havilland Aircraft of Canada News and Discussion Thread
Replies: 256
Views: 46375

Re: De Havilland Aircraft of Canada Returns to the Skies

Do Q400 operators are struggling to recruit Captains or First officer at the moment ? As much as anybody else. There's a general pilot shortage out there, so finding crews (especially experienced) is not easy no matter what you're flying. I'm asking this because I see non stop online promotion for ...

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by TripleDelta
Fri Sep 06, 2019 10:20 pm
Forum: Civil Aviation
Topic: De Havilland Aircraft of Canada News and Discussion Thread
Replies: 256
Views: 46375

Re: De Havilland Aircraft of Canada Returns to the Skies

Interesting. What are the differences in terms of equipement for the "modern" version between the Base and Max ? Equipment doesn't influence the Maximum Takeoff Mass; only the Empty Mass. MTOM is the same regardless of what equipment the customer chooses to install (i.e. a Max with a basi...

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by TripleDelta
Fri Sep 06, 2019 9:49 pm
Forum: Civil Aviation
Topic: De Havilland Aircraft of Canada News and Discussion Thread
Replies: 256
Views: 46375

Re: De Havilland Aircraft of Canada Returns to the Skies

Mind you, the "classic Q400" comes in four maximum mass variants: Basic, Intermediate, High and Enhanced High. The MTOM difference between the lightest and heaviest is 1,600 kg (28,000 vs 29,600); so there may even be borderline cases where the Basic can use a runway at MTOM, while the En...

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by TripleDelta
Fri Sep 06, 2019 4:49 pm
Forum: Civil Aviation
Topic: De Havilland Aircraft of Canada News and Discussion Thread
Replies: 256
Views: 46375

Re: De Havilland Aircraft of Canada Returns to the Skies

Does an airport with the following PCN : 14 / F / C / W / T can stand frequent Q400 operations at MTOW ? The manuals for the variant we operate say that it can't handle the Q400 at MTOM at all . For flexible pavement (F) with a low strength category (C), the book lists an ACN of 18.3. There is a pr...

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by TripleDelta
Fri Sep 06, 2019 3:43 pm
Forum: Civil Aviation
Topic: De Havilland Aircraft of Canada News and Discussion Thread
Replies: 256
Views: 46375

Re: De Havilland Aircraft of Canada Returns to the Skies

It needs better brakes and wings for landing distance especially on contaminated runways... it’s pretty shoddy right now... especially with a 5-7 second heat up time for the carbon brakes which can eat a lot of runway in the winter. Even on compacted snow, the Q400 needs just 1300 meters of runway ...

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by TripleDelta
Fri Sep 06, 2019 1:58 pm
Forum: Civil Aviation
Topic: De Havilland Aircraft of Canada News and Discussion Thread
Replies: 256
Views: 46375

Re: De Havilland Aircraft of Canada Returns to the Skies

Some more info from DHC v2.0: https://www.flightglobal.com/news/articles/analysis-de-havilland-eyes-dash-8-resurgence-460454/ Such updates likely include new cockpit technologies and efficiency improvements, though De Havilland is also considering new variants including a 50-seater, the Toronto comp...

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by TripleDelta
Tue Sep 03, 2019 9:12 pm
Forum: Civil Aviation
Topic: De Havilland Aircraft of Canada News and Discussion Thread
Replies: 256
Views: 46375

Re: De Havilland Aircraft of Canada Returns to the Skies

Is it possible with out spending huge amounts of money that the Q400 could modified to shed some weight? Unlikely; the issue is with the entire fuselage and wing. Like the Fokker 50, the Q400 is built like a battleship (the interior is another story, but don't let that fool you); trimming it down w...

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by TripleDelta
Tue Sep 03, 2019 2:21 pm
Forum: Civil Aviation
Topic: De Havilland Aircraft of Canada News and Discussion Thread
Replies: 256
Views: 46375

Re: De Havilland Aircraft of Canada Returns to the Skies

I found it weird because as far as I know, Flybe is flying on high rotations their aircrafts and so the Q400 generate more revenued than doing the same with ATR72s. The Q400 works best in a comparatively narrow band of flight times... 1:30-1:45 seems to be the magic number in Europe. On shorter fli...

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by TripleDelta
Tue Sep 03, 2019 2:19 am
Forum: Civil Aviation
Topic: De Havilland Aircraft of Canada News and Discussion Thread
Replies: 256
Views: 46375

Re: De Havilland Aircraft of Canada Returns to the Skies

"The Q400’s fuel consumption is nearly 30% more than that of the ATR72 under similar 300NM environmental conditions in high speed cruise." Well, of course it would be given the speed and mass difference. The Q400's High Speed Cruise is around the 350 KTAS mark, some 20% faster than the AT...

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by TripleDelta
Tue Sep 03, 2019 2:13 am
Forum: Civil Aviation
Topic: Are basler BT67 Still being produced?
Replies: 27
Views: 6926

Re: Are basler BT67 Still being produced?

GalaxyFlyer wrote:
Don’t confuse fuel consumption with efficiency. If true, we’d still be flying DC-6. The BT-67 flies 25% faster while carrying 43% more payload with more cargo volume.


With more easily obtainable fuel, higher Time Between Overhauls and vastly improved reliability.

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by TripleDelta
Tue Sep 03, 2019 2:11 am
Forum: Civil Aviation
Topic: De Havilland Aircraft of Canada News and Discussion Thread
Replies: 256
Views: 46375

Re: De Havilland Aircraft of Canada Returns to the Skies

But the Q400 carry 20% more passengers at the same level of comfort Actually, the vast majority of Q400s flying today are based on the 78 seat configuration (there are varations; my airline operates this config with two seats removed to fit an extended galley); 86/90 seat versions can be found most...

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by TripleDelta
Mon Sep 02, 2019 11:12 am
Forum: Civil Aviation
Topic: Are basler BT67 Still being produced?
Replies: 27
Views: 6926

Re: Are basler BT67 Still being produced?

Just looked at the wikipedia page and indeed the reworking is quite extensive, including the lengthening of the airframe. I was quite surprised that the new engines - they are much of course - were less fuel-efficient than the original ones from 80plus years ago. Here's Basler's own infographic, li...

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by TripleDelta
Fri Aug 30, 2019 6:02 am
Forum: Civil Aviation
Topic: De Havilland Aircraft of Canada News and Discussion Thread
Replies: 256
Views: 46375

Re: De Havilland Aircraft of Canada Returns to the Skies

Also, a brief look at flights currently over Canada shows a fair number of non-speeding Q400s. In addition to the TAS/GS issue, there's also one other thing to consider when looking at North America: in the ~70 seat segment, there's effectively no option except the Q400 (unless ATR manages to break...

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by TripleDelta
Fri Aug 30, 2019 5:39 am
Forum: Civil Aviation
Topic: De Havilland Aircraft of Canada News and Discussion Thread
Replies: 256
Views: 46375

Re: De Havilland Aircraft of Canada Returns to the Skies

Slightly offtopic, what would be your cheaper options to do the job? Realistically, you don't have much choice. Despite their similarities, the ATR-72 and Q400 are not direct competitors - yes, their markets overlap occasionally, but they were intended for two different types of operations. The ATR...

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by TripleDelta
Thu Aug 29, 2019 7:32 pm
Forum: Civil Aviation
Topic: De Havilland Aircraft of Canada News and Discussion Thread
Replies: 256
Views: 46375

Re: De Havilland Aircraft of Canada Returns to the Skies

The difference is the Dash 8 - Q400 can fly at High Speed Cruise (345KTAS) then you can do longer flights or catch up delay if you fly in delay. If I understood correctly, you're assuming that Q400 operators plan their flights to be in ATR performance brackets; this is not so. In the majority of Da...

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by TripleDelta
Thu Aug 29, 2019 7:15 pm
Forum: Civil Aviation
Topic: De Havilland Aircraft of Canada News and Discussion Thread
Replies: 256
Views: 46375

Re: De Havilland Aircraft of Canada Returns to the Skies

- ATR 72-600 Max Cruise Speed : 275 KTAS / Fuel Burn : 675 kg/Hour / Max capacity : 78 Pax - Dash 8 - Q400 : Long Range Cruise : 290 KTAS / Fuel Burn : 750kg/Hour / Max capacity : 90 Pax - Maintenance cost is lower on the ATR - Crews cost the same The difference is the Dash 8 - Q400 can fly at High...

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by TripleDelta
Tue Aug 27, 2019 4:45 pm
Forum: Civil Aviation
Topic: De Havilland Aircraft of Canada News and Discussion Thread
Replies: 256
Views: 46375

Re: De Havilland Aircraft of Canada Returns to the Skies

Is the Q400 production going smooth since DHC took over, I so hope the plane stays in production. During a press briefing at this year's Paris Air Show, company execs said that they dispatched their first Q400 just 18 days after formally starting business - and that they had completed their first f...

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by TripleDelta
Tue Aug 27, 2019 3:56 pm
Forum: Civil Aviation
Topic: De Havilland Aircraft of Canada News and Discussion Thread
Replies: 256
Views: 46375

Re: De Havilland Aircraft of Canada Returns to the Skies

Do you have an idea why very few EU operators jumped on this option? I can only speak for my carrier; in its case, many flights are pretty baggage-heavy (23 kg allowance for economy, up to 32 for business), and there's often some cargo and mail on board - so the front hold frequently comes in handy...

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