Search found 1247 matches

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by 77west
Thu Feb 17, 2022 6:56 am
Forum: Technical/Operations
Topic: Pneumatic vs Hydraulic
Replies: 35
Views: 3907

Re: Pneumatic vs Hydraulic

Pneumatics are not suitable for large control surfaces. As you say the medium is compressible. - Pneumatics can be made very compact, which saves space and weight. - Air may be less dense than hydraulic fluid, but the weight of hydraulic fluid in an airliner is a rounding error in terms of total we...

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by 77west
Thu Feb 17, 2022 6:51 am
Forum: Civil Aviation
Topic: New Zealand Aviation Thread - February 2022
Replies: 216
Views: 31088

Re: New Zealand Aviation Thread - February 2022

https://www.tvnz.co.nz/shows/seven-sharp/clips/is-our-phased-reopening-doing-enough-to-help-international-travel Tonight's Severn Sharp had a short video taken at the Auckland Airport and included an interview with General manager on the challenges that lay ahead. With regards to getting tourism ba...

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by 77west
Wed Feb 16, 2022 9:48 pm
Forum: Technical/Operations
Topic: The sound of a big turboprop
Replies: 7
Views: 1793

Re: The sound of a big turboprop

My understanding of a turboprop that it's essentially a turbojet engine with a propeller sticking out of the front. So Im wondering why a big turboprop (or any for that matter) doesn't sound more like a pure jet when overhead. I get the propeller makes a noise all its own, but I hear no turbine whi...

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by 77west
Tue Feb 15, 2022 5:22 am
Forum: Technical/Operations
Topic: DIY project !!! ... an ancient Cessna 16-17 years AOG
Replies: 22
Views: 4553

Re: DIY project !!! ... an ancient Cessna 16-17 years AOG

https://youtu.be/z8bIXeM0RJ8?t=95
-->

This reminds me of the guy who bought an RB211 and started it up in his back yard.

https://youtu.be/z8bIXeM0RJ8?t=95

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by 77west
Tue Feb 15, 2022 5:00 am
Forum: Civil Aviation
Topic: Why do most airlines lease aircraft instead of buying it?
Replies: 34
Views: 6202

Re: Why do most airlines lease aircraft instead of buying it?

Something else to consider is the benefit to some airlines during COVID - many were able to return aircraft coming off lease and made them the leasing companies problem, I know here in NZ, Air NZ was able to offload a number of 772 and 77W back to the leasing company, so they were not sitting on the...

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by 77west
Tue Feb 15, 2022 3:41 am
Forum: Civil Aviation
Topic: New Zealand Aviation Thread - February 2022
Replies: 216
Views: 31088

Re: New Zealand Aviation Thread - February 2022

A new airline being set up in Australia called Koala Airlines using 737 MAXs. http://www.koalaair.com.au Their livery looks real nice plus they show a route map with flights from the Australia East coast to NZ. Might be an interesting one to watch. There route map looks like an stylist stock photo?...

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by 77west
Tue Feb 15, 2022 1:44 am
Forum: Civil Aviation
Topic: New Zealand Aviation Thread - February 2022
Replies: 216
Views: 31088

Re: New Zealand Aviation Thread - February 2022

7,700nm - that going to be a block time of what,17 hours westbound, 19 hours eastbound? Thats a looong flight. Within a few nm of AKL-DXB.

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by 77west
Tue Feb 15, 2022 12:45 am
Forum: Civil Aviation
Topic: New Zealand Aviation Thread - February 2022
Replies: 216
Views: 31088

Re: New Zealand Aviation Thread - February 2022

Out of interest why is NZ running cargo flights out of CHC and not AKL? One would think they would consolidate freight into AKL and go from there? I could be wrong here but this is my understanding. The government cargo scheme covers the movement of some goods internationally only. It's pretty comp...

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by 77west
Mon Feb 14, 2022 11:04 pm
Forum: Civil Aviation
Topic: New Zealand Aviation Thread - February 2022
Replies: 216
Views: 31088

Re: New Zealand Aviation Thread - February 2022

Out of interest why is NZ running cargo flights out of CHC and not AKL? One would think they would consolidate freight into AKL and go from there?

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by 77west
Sat Feb 12, 2022 9:32 pm
Forum: Technical/Operations
Topic: Why didn't the Boeing 707 have rudder problems similar to those of the Boeing 737?
Replies: 37
Views: 7202

Re: Why didn't the Boeing 707 have rudder problems similar to those of the Boeing 737?

Looking at cutaway drawings of the Boeing 707, it appears that this aircraft did not have split rudders like the Boeing 727 and that it had a single rudder actuator system. Of course cutaway drawings don't show everything. Since I don't have detailed schematics of the Boeing 707 and its civil and m...

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by 77west
Thu Feb 10, 2022 6:20 am
Forum: Civil Aviation
Topic: New Zealand Aviation Thread - February 2022
Replies: 216
Views: 31088

Re: New Zealand Aviation Thread - February 2022

Thinking about this, can someone possibly explain the ETOPS consequences of having the plane in storage for 1.5 years (not to mention no 777 ops forthe airline in that timeperiod)? Surely it takes more than a single test flight for it to be ETOPS330 qualified again? Even a test flight + TransTasman...

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by 77west
Thu Feb 10, 2022 6:07 am
Forum: Civil Aviation
Topic: New Zealand Aviation Thread - February 2022
Replies: 216
Views: 31088

Re: New Zealand Aviation Thread - February 2022

https://www.flightradar24.com/data/aircraft/zk-okq Looks like OKQ has has some issues, it still not left AKL yet (was mean to leave as 0840 as NZ1121). Looks like on Saturday Night that OKQ is returning to LAX as NZ1004. Thinking about this, can someone possibly explain the ETOPS consequences of ha...

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by 77west
Tue Feb 08, 2022 9:43 am
Forum: Civil Aviation
Topic: New Zealand Aviation Thread - February 2022
Replies: 216
Views: 31088

Re: New Zealand Aviation Thread - February 2022

https://australianaviation.com.au/2022/02/video-air-new-zealands-boeing-777-back-in-the-air/ How many 777s to return? Article says 7, I had heard 6 earlier. Also incorrect as OKQ wasn’t the 1st 77W. They have 3 in AKL and 4 over in the states, I believe the idea is to reactivate the 3 AKL based one...

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by 77west
Tue Feb 08, 2022 5:59 am
Forum: Technical/Operations
Topic: Lockheed L-1011 mechanical sound heard before touchdown.
Replies: 14
Views: 2536

Re: Lockheed L-1011 mechanical sound heard before touchdown.

Can be heard very clearly on the 777 if you're sat just behind the wing. (3:30 in the video below). https://youtu.be/YxOskxXiYMk Yeah on several aircraft types the demand pumps / transfer pumps will spin up just before touchdown, anticipating the additional hydraulic load about to be experienced, w...

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by 77west
Tue Feb 08, 2022 3:31 am
Forum: Technical/Operations
Topic: Was [Is] it common to use only idle reverse thrust during landing runs in the DC-10 and L-1011 Tristar?
Replies: 17
Views: 2962

Re: Was [Is] it common to use only idle reverse thrust during landing runs in the DC-10 and L-1011 Tristar?

Most airports in the EU allow only idle reverse on any landing aircraft. Noise is a HUGE issue at most European airports to the point of requiring APU's to be shut down within 5 minutes of arriving on stand (gate). Becoming moreso in North America. Sorry, not specific to the thread title but incorp...

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by 77west
Tue Feb 08, 2022 3:20 am
Forum: Civil Aviation
Topic: New Zealand Aviation Thread - February 2022
Replies: 216
Views: 31088

Re: New Zealand Aviation Thread - February 2022

But you then also have to carry some cabin crew as " fire wardens" As no fire detection alarms in the cabin. Do they operate with more than 2 flight crew? If they had a second crew for the flight home they could have them in the cabin. Although having some actual cabin crew may be good fr...

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by 77west
Tue Feb 08, 2022 2:23 am
Forum: Civil Aviation
Topic: New Zealand Aviation Thread - February 2022
Replies: 216
Views: 31088

Re: New Zealand Aviation Thread - February 2022

Possibly when more cabin crew have been retrained? Or once another aircraft is back in service? When is it meant to go to LAX? Just curious as that would mean both 789/77W there which isn’t so efficient on crew with 2 types. I do recall 3 aircraft would be in service but it would be a 2 aircraft sc...

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by 77west
Tue Feb 08, 2022 12:26 am
Forum: Civil Aviation
Topic: New Zealand Aviation Thread - February 2022
Replies: 216
Views: 31088

Re: New Zealand Aviation Thread - February 2022

Possibly when more cabin crew have been retrained? Or once another aircraft is back in service? When is it meant to go to LAX? Just curious as that would mean both 789/77W there which isn’t so efficient on crew with 2 types. I do recall 3 aircraft would be in service but it would be a 2 aircraft sc...

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by 77west
Mon Feb 07, 2022 11:17 pm
Forum: Civil Aviation
Topic: New Zealand Aviation Thread - February 2022
Replies: 216
Views: 31088

Re: New Zealand Aviation Thread - February 2022

NZ’s first 77W to return to service, will preform an test flight from AKL today, followed by returning to service this Thursday on AKL-MEL-AKL on an cargo run. https://i.stuff.co.nz/business/industries/127693511/boeing-777300er-back-from-hibernation-air-new-zealands-biggest-aircraft-returning-to-se...

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by 77west
Mon Feb 07, 2022 9:58 pm
Forum: Civil Aviation
Topic: New Zealand Aviation Thread - February 2022
Replies: 216
Views: 31088

Re: New Zealand Aviation Thread - February 2022

NZ’s first 77W to return to service, will preform an test flight from AKL today, followed by returning to service this Thursday on AKL-MEL-AKL on an cargo run. https://i.stuff.co.nz/business/industries/127693511/boeing-777300er-back-from-hibernation-air-new-zealands-biggest-aircraft-returning-to-se...

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by 77west
Sun Feb 06, 2022 7:06 pm
Forum: Technical/Operations
Topic: Which airliners have ram air turbines. Which power hydraulics and which provide electricity?
Replies: 46
Views: 5271

Re: Which airliners have ram air turbines. Which power hydraulics and which provide electricity?

Fun fact: the #3 A340 flap track canoes on the starboard side is longer to accommodate the RAT: https://upload.wikimedia.org/wikipedia/commons/e/ed/A340-600_clean-wing_bottom_plan-view.jpg Interesting, I would have thought the Port one would be the same size even if not required, for symmetry/drag ...

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by 77west
Sun Feb 06, 2022 7:34 am
Forum: Technical/Operations
Topic: Which airliners have ram air turbines. Which power hydraulics and which provide electricity?
Replies: 46
Views: 5271

Re: Which airliners have ram air turbines. Which power hydraulics and which provide electricity?

Speaking of the 747 classic, it had four hydraulic systems pressurized by four engine driven Hydraulic pumps that were backed up by four more pneumatically driven pumps. Each engine had a large capacity generator plus the APU had two generators. The APU could be started in flight although sometimes...

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by 77west
Sun Feb 06, 2022 2:11 am
Forum: Technical/Operations
Topic: Which airliners have ram air turbines. Which power hydraulics and which provide electricity?
Replies: 46
Views: 5271

Re: Which airliners have ram air turbines. Which power hydraulics and which provide electricity?

Speaking of the 747 classic, it had four hydraulic systems pressurized by four engine driven Hydraulic pumps that were backed up by four more pneumatically driven pumps. Each engine had a large capacity generator plus the APU had two generators. The APU could be started in flight although sometimes...

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by 77west
Sun Feb 06, 2022 1:34 am
Forum: Travel, Polls & Preferences
Topic: Which commercial aircraft manufacturer's flap system do you like best?
Replies: 14
Views: 1756

Re: Which commercial aircraft manufacturer's flap system do you like best?

C-5 system is pretty simple set-up, slats and single-slot flaps. The Chug 14-1 didn’t have slats. The Global has slats, the Gulfstream uses flaps that extend off the chord line, the Global’s extend perpendicular to the flow. I never understood GLF’s lack of slats and using wing area to make up for ...

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by 77west
Sun Feb 06, 2022 1:21 am
Forum: Travel, Polls & Preferences
Topic: Which aircraft's winglets are your favorites?
Replies: 25
Views: 3739

Re: Which aircraft's winglets are your favorites?

Personally I hate the split scimitar design, the 767 with normal winglets is quite striking and for me is the best overall look. (they are huge for its overall size). A320/380 wingtip fence would be my worst look. B787 gets an honorable mention, 77W you almost don't notice they are quite small compa...

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by 77west
Sat Feb 05, 2022 8:24 am
Forum: Technical/Operations
Topic: A380 Reverse Thrust On Landing
Replies: 29
Views: 4374

Re: A380 Reverse Thrust On Landing

Question, and a bit off topic, but would an airliner benefit from a split-rudder airbrake like the space shuttle had? Or would the complexity outweigh any benefits. The same could be said for the H-Stab.

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by 77west
Sat Feb 05, 2022 1:02 am
Forum: Technical/Operations
Topic: A380 Reverse Thrust On Landing
Replies: 29
Views: 4374

Re: A380 Reverse Thrust On Landing

Interesting fact, Airbus originally wanted to certify it with no reverse at all! I believe the American regulators would have none of it and the compromise was on the inboards only, due to FOD risk given how far out the outboards hang (well over the grass at most airports) as per the previous post....

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by 77west
Wed Feb 02, 2022 2:28 am
Forum: Technical/Operations
Topic: Engine Start Procedure. Which one first?
Replies: 48
Views: 5016

Re: Engine Start Procedure. Which one first?

WesternDC6B wrote:
bigb wrote:
CRJs always number 2 unless it’s the first flight of the day then it’s Engine number 1


Why is that? Thank you.


Something about checking a fuel valve

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by 77west
Tue Feb 01, 2022 5:47 pm
Forum: Civil Aviation
Topic: New Zealand Aviation Thread - January 2022
Replies: 201
Views: 28922

Re: New Zealand Aviation Thread - January 2022

Looks like Air NZ's first 777-300ER is close to taking to the skies after a long period on the ground. Test flight in about 7-8 days. Believed to be ZK-OKO. So that's what, 18 months, 2 years, it will be good indeed to see them back Are they returning to service, departing the fleet, or something e...

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by 77west
Tue Feb 01, 2022 5:43 pm
Forum: Technical/Operations
Topic: Engine Start Procedure. Which one first?
Replies: 48
Views: 5016

Re: Engine Start Procedure. Which one first?

As per a lot of these posts it varies by the plane. I would like to make some comments about the 747, so anyone more experienced please correct me. Only experience I have with the queen is in FS2020 which is not fully realistic yet. However, I have some familiarity with the cockpit at least in game...

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by 77west
Tue Feb 01, 2022 9:09 am
Forum: Civil Aviation
Topic: New Zealand Aviation Thread - January 2022
Replies: 201
Views: 28922

Re: New Zealand Aviation Thread - January 2022

GW54 wrote:
Looks like Air NZ's first 777-300ER is close to taking to the skies after a long period on the ground. Test flight in about 7-8 days. Believed to be ZK-OKO.


So that's what, 18 months, 2 years, it will be good indeed to see them back

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by 77west
Tue Feb 01, 2022 8:41 am
Forum: Technical/Operations
Topic: Airline livery costs
Replies: 10
Views: 3028

Re: Airline livery costs

Would an ultra-durable decal be better than actually painting it, similar to how you might sign-write a vehicle with vinyl? Probably so, but that would be a huge maintenance expense when hydraulic actuators leak. Honestly, I don’t know how Frontier keeps them looking so good. People would be surpri...

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by 77west
Tue Feb 01, 2022 6:51 am
Forum: Technical/Operations
Topic: Airline livery costs
Replies: 10
Views: 3028

Re: Airline livery costs

Plus a more complex livery takes more man-hours to apply. The American livery is one of the worst offenders. With six different colors on the tail, it takes time for each color to dry, mask it off and spray the next color. I’ve always said that the American livery will be changed by the bean counte...

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by 77west
Mon Jan 31, 2022 9:37 pm
Forum: Technical/Operations
Topic: Engine Start Procedure. Which one first?
Replies: 48
Views: 5016

Re: Engine Start Procedure. Which one first?

thepinkmachine wrote:
787 - you start both at The same time :)


And on the 747 they do 2 at a time

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by 77west
Sun Jan 30, 2022 8:30 pm
Forum: Technical/Operations
Topic: A380 Reverse Thrust On Landing
Replies: 29
Views: 4374

Re: A380 Reverse Thrust On Landing

It's been a while since my last 763 flight and so am somewhat out of the loop with up-to-date heavy jet ops. After watching a series of A380 landings, I noticed only engines 2 & 3 seemed to use reverse after landing - some with idle reverse; some with full on reverse. https://fb.watch/aL9wmMdvX...

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by 77west
Fri Jan 28, 2022 5:47 pm
Forum: Civil Aviation
Topic: New Zealand Aviation Thread - January 2022
Replies: 201
Views: 28922

Re: New Zealand Aviation Thread - January 2022

They’re happy using them domestically simply because there isn’t the demand to use them internationally. Even with the extra weight, they still use less fuel than an international A320CEO for most flights and use less fuel per seat than the A320D. They will be wanting to configure these new aircraf...

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by 77west
Thu Jan 27, 2022 2:56 am
Forum: Civil Aviation
Topic: New Zealand Aviation Thread - January 2022
Replies: 201
Views: 28922

Re: New Zealand Aviation Thread - January 2022

If they are for domestic, will they also not have overwater equipment (rafts etc) like the ZK-OX... series? Will be interesting to see what layout they go for, I think 240 may be pushing it, the international ones have 214, so I would say maybe 220-226 (couple of extra rows). At what point does an ...

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by 77west
Wed Jan 26, 2022 6:00 am
Forum: Civil Aviation
Topic: New Zealand Aviation Thread - January 2022
Replies: 201
Views: 28922

Re: New Zealand Aviation Thread - January 2022

Rumours from reliable sources are that Air NZ is getting close to getting 777-300ERs back into service. Understand Pilots are training and aircraft receiving return to service maintenance. Schedule will utilise two aircraft but all three currently in Auckland will be utlilised through rotation. Mak...

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by 77west
Tue Jan 25, 2022 10:02 pm
Forum: Civil Aviation
Topic: New Zealand Aviation Thread - January 2022
Replies: 201
Views: 28922

Re: New Zealand Aviation Thread - January 2022

Air NZ's next A321-271NX is msn 10963. The fuselage has been spotted 'Outside near Hangar 14' at Hamburg Finkenwerder. It's due for delivery in June 2022. https://www.digitalairliners.com/2022/01/22/log-hamburg-finkenwerder-xfw-22-01-2022/ Does anyone know the rego. Was thinking ZK-OYA or ZK-NNH. P...

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by 77west
Tue Jan 25, 2022 9:03 am
Forum: Technical/Operations
Topic: Use of speedbrakes in Boeing 737 during RTO
Replies: 33
Views: 3449

Re: Use of speedbrakes in Boeing 737 during RTO

I am not qualified on the 737 but did an MCC on the NG and from what I can remember we did in the sim: As Starlionblue said, the captain will always have the hand on thrust levers until V1 and he will make the call and RTO, whether he is PF or PM. The procedure we used was (Captain): 1. Call "...

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by 77west
Tue Jan 25, 2022 7:22 am
Forum: Technical/Operations
Topic: Avionics Bay Access and Pressurization
Replies: 63
Views: 5913

Re: Avionics Bay Access and Pressurization

Just came across this picture in the thread about the stowaway on the Cargolux flight showing the 747 exterior hatch in use and thought it was interesting info for this thread

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by 77west
Tue Jan 25, 2022 4:54 am
Forum: Technical/Operations
Topic: A380 Reverse Thrust On Landing
Replies: 29
Views: 4374

Re: A380 Reverse Thrust On Landing

It's been a while since my last 763 flight and so am somewhat out of the loop with up-to-date heavy jet ops. After watching a series of A380 landings, I noticed only engines 2 & 3 seemed to use reverse after landing - some with idle reverse; some with full on reverse. https://fb.watch/aL9wmMdvX...

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by 77west
Tue Jan 25, 2022 4:50 am
Forum: Technical/Operations
Topic: Avionics Bay Access and Pressurization
Replies: 63
Views: 5913

Re: Avionics Bay Access and Pressurization

While this question, I'm sure, is a quest for information and knowledge, to answer it in a public forum could constitute a security risk for commercial operations. I would suggest to the site administrator that the replies be considered and filtered for potential sensitive information. I would not ...

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by 77west
Tue Jan 25, 2022 1:41 am
Forum: Technical/Operations
Topic: Avionics Bay Access and Pressurization
Replies: 63
Views: 5913

Re: Avionics Bay Access and Pressurization

All airliners have forward E&E compartments. On wide bodies, they are accessible from the cabin, narrow bodies they are not. On the 777, the E&E is accessible from the forward cargo. The 787 also has an aft E&E, not accessible from the cabin but from the aft cargo. All E&E compartme...

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by 77west
Mon Jan 24, 2022 11:08 pm
Forum: Civil Aviation
Topic: New Zealand Aviation Thread - January 2022
Replies: 201
Views: 28922

Re: New Zealand Aviation Thread - January 2022

Air NZ's next A321-271NX is msn 10963. The fuselage has been spotted 'Outside near Hangar 14' at Hamburg Finkenwerder. It's due for delivery in June 2022. https://www.digitalairliners.com/2022/01/22/log-hamburg-finkenwerder-xfw-22-01-2022/ Does anyone know the rego. Was thinking ZK-OYA or ZK-NNH. P...

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by 77west
Mon Jan 24, 2022 10:58 pm
Forum: Technical/Operations
Topic: Avionics Bay Access and Pressurization
Replies: 63
Views: 5913

Re: Avionics Bay Access and Pressurization

Yeah, the Whale has one. A friend, who was a wrench on it at UPS loved to tell of diverting into King Salmon and using it as a way to the ground to order fuel. No stairs available. Yes, but that is the normal E&E access in the floor of the main deck. Six’ish feet below that is the exterior E&am...

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by 77west
Thu Jan 20, 2022 2:27 am
Forum: Technical/Operations
Topic: What do the different SQ 777 safety cards mean?
Replies: 5
Views: 1485

Re: What do the different SQ 777 safety cards mean?

Hi, I’m hoping someone with a little insight into Singapore Airlines’ operations can help me out a bit. I recently noticed there are three safety cards for the SQ 777-200ER: - “777-200” grey safety card - “777-200ER” reddish-brown safety card - “777-200ER (Applicable to 9V-SVA, SVD, SVF, SVH, &...

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by 77west
Wed Jan 19, 2022 2:00 am
Forum: Civil Aviation
Topic: New Zealand Aviation Thread - January 2022
Replies: 201
Views: 28922

Re: New Zealand Aviation Thread - January 2022

Out of interest are you an engineer? Some naïve questions - does removing the engines expose more to the sea air than not? What does Boeing and GE advise for storing near sea? What is Boeings/GE advice around covering the aircraft and engines the way they have. I'm not sure on these answers. We'd n...

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by 77west
Tue Jan 18, 2022 8:10 pm
Forum: Civil Aviation
Topic: New Zealand Aviation Thread - January 2022
Replies: 201
Views: 28922

Re: New Zealand Aviation Thread - January 2022

A few thoughts, I'm not 100% sure on all of them. ⋅ It's not like they've sat open and exposed to the elements for 2 years ⋅ I thought Alice springs was full ⋅ There's always been a need / vision to get quicker access to some 77W if needed at shorter notice so storing ...

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by 77west
Tue Jan 18, 2022 9:22 am
Forum: Civil Aviation
Topic: A330-300 first revenue flight, 28 years ago today.
Replies: 63
Views: 10089

Re: A330-300 first revenue flight, 28 years ago today.

I do wonder if Airbus had pushed its abilities earlier if it could have given the 777-200ER a run for its money on some routes. Picture a 250-280t MTOW with the A340 center gear and something like the Trent 800. Of course they could have gone down this route with the A330-900 but this would cannibal...

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