Search found 1144 matches

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by rcair1
Sat Apr 20, 2019 1:24 pm
Forum: Civil Aviation
Topic: B737MAX Grounded Worldwide Q1 2019
Replies: 6476
Views: 775067

Re: B737MAX Grounded Worldwide

If a house is burning down the firefighters put it out the same way. They don't need training based on if it started from an electrical overload or a candle falling over. Not exactly correct. You use different types of fire-extinguishers for different fires. You don't put water on electrical fire, ...

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by rcair1
Thu Jan 04, 2018 10:47 pm
Forum: Civil Aviation
Topic: Airbus A380 Production/Delivery Thread 2018
Replies: 116
Views: 35222

Re: Airbus A380 Production/Delivery Thread 2018

Has Airbus given any thought to reviving the A380 freighter as a way to jump start the program? Well - jump start - no. But yes, a freighter version was part of the original plan. From http://www.aerospace-technology.com/projects/airbus_a380/ "Corporate authorisation was announced in December ...

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by rcair1
Tue Jun 13, 2017 6:33 pm
Forum: Technical/Operations
Topic: Twins vs. quads and international over water routings.
Replies: 65
Views: 7513

Re: Twins vs. quads and international over water routings.

What if they do lose one engine on take off, i.e., at V1? Aren't twins certified to take off on one engine? I'm not talking about starting a take off roll on one engine, that would be insanity. I'm talking V1 speeds. Thanks. I guess so, but in that case the length or route of the flight wouldn't ma...

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by rcair1
Tue Jan 03, 2017 3:57 am
Forum: Technical/Operations
Topic: Why did Tricycle landing gears replaced the tail draggers
Replies: 46
Views: 7103

Re: Why did Tricycle landing gears replaced the tail draggers

Lots of interesting thoughts here, but the reason tricycle replaced tail dragger is purely stability in landing ground roll and handling. WIederling touched on it with his #1 reason. Ignoring aerodynamic forces (which become small as you roll out), a tail dragger is inherently unstable. The center o...

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by rcair1
Wed Nov 30, 2016 6:01 pm
Forum: Technical/Operations
Topic: Tailwinds during takeoff
Replies: 16
Views: 2263

Re: Tailwinds during takeoff

As Boeing Guy has said, you can buy the additional 5kts for a price. Operators that have this need, had this added to their Manuals. An example would be CAL in the 757 would arrive at a particular Central American early in the morning when the traditional winds were in excess of 10kts on the ILS ru...

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by rcair1
Sun Nov 27, 2016 2:44 am
Forum: Civil Aviation
Topic: Wing-engined > Rear-engined (Passenger Appeal)?
Replies: 55
Views: 8396

Re: Wing-engined > Rear-engined (Passenger Appeal)?

The primary factor on rear engine vs underslung is cost to build and operate. Passenger comfort does not enter into it. Rear engine requires stronger tail section, fuel lines running there (bigger anyway, since many a/c have the apu in the tail), etc. Also - it is harder to put large bypass engines ...

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by rcair1
Wed Oct 19, 2016 10:19 pm
Forum: Civil Aviation
Topic: DOT considering forcing airlines to include Fees in Fares
Replies: 41
Views: 5122

Re: DOT considering forcing airlines to include Fees in Fares

If it's like here in Canada, it would be things like Security Fee, Airport Improvement fee and so on. In Canada those fees are actually a huge chunk of the fare. Edit: I see now they ARE referring to things like bag fees. Not sure how that would work since not everyone has a bag. My guess is that a...

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by rcair1
Tue Oct 04, 2016 6:32 pm
Forum: Civil Aviation
Topic: Mother sues jetBlue after staff fly 5-year-old boy to wrong city and present her with a different 'son'
Replies: 62
Views: 6701

Re: Mother sues jetBlue after staff fly 5-year-old boy to wrong city and present her with a different 'son'

usflyguy wrote:
The bigger issues is that it is ok to send a 5 year old on a commercial flight alone. There is absolutely no reason that a 5 year old should be on a flight unaccompanied.


Agreed.

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by rcair1
Mon Sep 26, 2016 9:30 pm
Forum: Civil Aviation
Topic: Samsung Note 2 catches fire in-flight
Replies: 39
Views: 6593

Re: Samsung Note 2 catches fire in-flight

The issue here is not Samsung or Apple, it is Li-Ion batteries and other high power density batteries. This problem will not go away - so we need to do what we can to manage the impact. You will get nowhere banning these phones. You _may_ get somewhere trying to keep them out of checked baggage. Nor...

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by rcair1
Thu Sep 15, 2016 11:08 pm
Forum: Technical/Operations
Topic: KA - Disturbing Experience On Push Back
Replies: 26
Views: 7804

Re: RE: KA - Disturbing Experience On Push Back

The A320 series has three hydraulic circuits, two have hydraulic pressure generated by engine driven pumps (green and yellow) and the blue system is powered by a electric pump in the fuselage, the circuits are not linked so a fluid leak from one system does not drain the other. To transfer hydrauli...

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by rcair1
Wed Sep 14, 2016 3:18 pm
Forum: Technical/Operations
Topic: Turbine Engine Oil Consumption
Replies: 40
Views: 46780

Re: RE: Turbine Engine Oil Consumption

Quoting etherealsky (Thread starter):CFM56 I don't think I've every seen an oil change on a commercial turbofan. Hadn't the L-1011 that limped into Florida on #2 because all 3 lost oil just had an 'oil change' on all 3. If I remember correctly, they did not put new o-rings on the plugs and all 3 lo...

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by rcair1
Wed Sep 14, 2016 3:04 pm
Forum: Civil Aviation
Topic: NTSB report on Delta Air Lines flight 1086
Replies: 23
Views: 7342

Re: NTSB report on Delta Air Lines flight 1086

Correct me if I'm wrong, but the captain calls for the evacuation not flight attendants. From what I've seen in training at airlines, the FA's wait for the captain's command for evacuation. The report states that the FA's were faced with lack of urgency from the captain to evacuate the aircraft. In...

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by rcair1
Tue Sep 13, 2016 5:37 pm
Forum: Civil Aviation
Topic: Remote pax loading coming to SFO
Replies: 67
Views: 13804

Re: Remote pax loading coming to SFO

Great news! I posted some time back about sfo needed to get going with remote parking. Yes it's not the premium experience but it adds a little flavor to the travel experience and most important is it will hopefully aleave planes waiting for a gate which has been a growing problem due to the surgin...

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by rcair1
Tue Sep 13, 2016 4:56 pm
Forum: Civil Aviation
Topic: Remote pax loading coming to SFO
Replies: 67
Views: 13804

Re: Remote pax loading coming to SFO

Great news! I posted some time back about sfo needed to get going with remote parking. Yes it's not the premium experience but it adds a little flavor to the travel experience and most important is it will hopefully aleave planes waiting for a gate which has been a growing problem due to the surgin...

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by rcair1
Tue Sep 13, 2016 4:26 pm
Forum: Technical/Operations
Topic: How did the infamous 748 wing wave recover from its stall?
Replies: 60
Views: 11850

Re: How did the infamous 748 wing wave recover from its stall?

If there is a pilot, who feels the slightest uncomfortable copying this on a sunny summer day, then I would really hate to be a passenger on his plane when he has to land in gusting sidewind, in the dark, in rain, fog, snow, wind shear, and God knows what other nasty stuff. That's what the pilots a...

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by rcair1
Thu Sep 08, 2016 11:17 pm
Forum: Technical/Operations
Topic: How did the infamous 748 wing wave recover from its stall?
Replies: 60
Views: 11850

Re: How did the infamous 748 wing wave recover from its stall?

Not taking any side here, but one thing everyone here is missing: a stall has nothing to do with speed. It is only dependant on the angle of attack. And that again is not only dependant on the pitch. Good examppe for that is AF447. In the deep stall, their pitch was fairly normal, but the angle of ...

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by rcair1
Thu Sep 01, 2016 11:12 pm
Forum: Civil Aviation
Topic: Flight MH370 was flown into water, says expert...
Replies: 428
Views: 72010

Re: Flight MH370 was flown into water, says expert...

Simultaneous icing of three heated pitot tubes, as per the BEA report, is improbable. No it is not. A systematic failure of identical systems cause by a common environment is predictable, not improbable. That is why, in critical control systems, there are 2 independent development streams. To preve...

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by rcair1
Thu Sep 01, 2016 10:12 pm
Forum: Technical/Operations
Topic: VFSG question
Replies: 2
Views: 963

Re: VFSG question

Hi, Im reading electrical description of 787, especially starter/generator and I have got something like this: ""The kVA rating is over a load power factor range from 0,85 to 1.0 lagging and over the complete operational frequency range" what does it mean? Thanks in advance It means ...

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by rcair1
Thu Sep 01, 2016 2:34 pm
Forum: Technical/Operations
Topic: Southwest Airlines flight 3472 suffers uncontained engine failure
Replies: 21
Views: 6793

Re: Southwest Airlines flight 3472 suffers uncontained engine failure

This article in aviation week disputes the fan blade loss. Neither of these (aviation week or the 'friend of a friend' post) are authoritative. "Given the absence of evidence of damage to the fan stage and the intact fan case flange, it is likely the U.S. National Transportation Safety Board (N...

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by rcair1
Thu Sep 01, 2016 2:27 pm
Forum: Civil Aviation
Topic: WN Engine Damage/Cowl Separation In Flight MSY-MCO
Replies: 108
Views: 54980

Re: WN Engine Damage/Cowl Separation In Flight MSY-MCO

The NTSB is investigating. I've not found any report from NTSB yet - but this information comes from an Aviation Week article and indicates no damage to rotating parts of the engine. They do not attribute this as a quote, so I can't speak to it's accuracy. "Given the absence of evidence of dama...

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by rcair1
Wed Aug 31, 2016 6:41 pm
Forum: Civil Aviation
Topic: What did landing at Kai Tak feel like?
Replies: 32
Views: 8710

Re: What did landing at Kai Tak feel like?

My first, and only, Kai Tak experience was CRAZY. I seriously thought something was wrong. I was on Cathy coming in during a typhoon on a A340. The weather was terrible and I had no idea about the uniqueness of the Kai Tak approach. So - picture that you are a pilot - sitting in a window on Business...

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by rcair1
Wed Aug 31, 2016 6:25 pm
Forum: Civil Aviation
Topic: Royal Air Maroc B737 rotates well before Vr
Replies: 60
Views: 16371

Re: Royal Air Maroc B737 rotates well before Vr

So - in calm conditions, imagine 2 vortexes off the wings, rotating opposite directions, trending down and out from the flight path. Right, so in this case, the waking TK plane was actually crossing the path of the RAM taking off, about a kilometer down the runway. Those wake vortices are pushing a...

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by rcair1
Wed Aug 31, 2016 2:30 pm
Forum: Technical/Operations
Topic: What we’ve learned from Eastern Air Lines flight 902
Replies: 6
Views: 2278

Re: What we’ve learned from Eastern Air Lines flight 902

Student pilots are taught very early on to recognize that when an airplane approaches its minimum flying speed, the airflow over the wing will begin to separate or break down, creating turbulence over the tail. The degradation of lift and the associated turbulence over the tail causes the airplane ...

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by rcair1
Wed Aug 31, 2016 1:45 pm
Forum: Civil Aviation
Topic: Royal Air Maroc B737 rotates well before Vr
Replies: 60
Views: 16371

Re: Royal Air Maroc B737 rotates well before Vr

So - the wake turbulence of an aircraft ahead of you will be below it's flight path and will not start till THEY rotate. --- That means that, if your aircraft has the performance to do so, you can plan your takeoff to lift off before their lift off point and stay above their climb path. How long do...

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by rcair1
Tue Aug 30, 2016 6:28 pm
Forum: Civil Aviation
Topic: Virgin America Announces Layoffs if Merger Approved
Replies: 95
Views: 16578

Re: Virgin America Announces Layoffs if Merger Approved

Here's a political question. Why should the govt ever approve a merger of two profitable companies that are ongoing entities that by their own admission will result in a loss of jobs? What exactly is the overall benefit of a merger that has no clear gain to either the employees or customers? Surely...

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by rcair1
Tue Aug 30, 2016 6:03 pm
Forum: Civil Aviation
Topic: Royal Air Maroc B737 rotates well before Vr
Replies: 60
Views: 16371

Re: Royal Air Maroc B737 rotates well before Vr

Does this technique of "rotating early to avoid wake turbulence" actually exist ? Do they mean making the take-off run shorter ? Which would imply full thrust instead of derated for example. My instinct would tell me that if you're going to fly through turbulence you'd rather have extra s...

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by rcair1
Tue Aug 23, 2016 6:05 pm
Forum: Civil Aviation
Topic: What planes are being used to fight California wildfires
Replies: 16
Views: 3679

Re: What planes are being used to fight California wildfires

RCair1, does it mean that you are happy that things continue the way they are? No. In fact, I'm in an organization whose existence is precisely the use of technology in aerial firefighting. That includes evaluation of current technology as well as future. I was going to reply to your message, but s...

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by rcair1
Mon Aug 22, 2016 7:13 pm
Forum: Civil Aviation
Topic: What planes are being used to fight California wildfires
Replies: 16
Views: 3679

Re: What planes are being used to fight California wildfires

I hesitate to even waste my time responding to this post because it is clear that your opinion, based upon what expertise I'm not sure, is not open to influence. You may, in fact, just be trolling. However, I'll respond to a few items because there may be people here that could benefit from a bit of...

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by rcair1
Fri Aug 19, 2016 10:24 pm
Forum: Civil Aviation
Topic: What planes are being used to fight California wildfires
Replies: 16
Views: 3679

Re: What planes are being used to fight California wildfires

The DC-10 tanker is pretty useless by itself on big fires like the ones raging in California now. It's comparable to trying to extinguish or even control a fire engulfing the entire Empire State building using a single fire extinguisher. The way they are doing it now, they might as well not do it a...

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by rcair1
Fri Aug 19, 2016 9:34 pm
Forum: Civil Aviation
Topic: Denver International plans security reconfiguration, new lounge and growth
Replies: 40
Views: 5484

Re: Denver International plans security reconfiguration, new lounge and growth

A lot has been going on at DEN, the most important of which appears to be that the Airport is moving ahead with plans to reconfigure the majority of the "Great Hall" into airside space to go back to the way it was pre-9/11, with lots of retail and open space under the tent at the airport....

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by rcair1
Thu Aug 18, 2016 8:56 pm
Forum: Civil Aviation
Topic: So They Are Making A Movie About Sully
Replies: 145
Views: 27341

Re: So They Are Making A Movie About Sully

Just saw an ad for the movie. It opens September 9. Yeah - I've seen a few. They are not making me feel warm and fuzzy about the movie. I think Tom Hanks is a great actor, so I had/have high hopes, but ...i dunno... Seems like they are drumming up a bunch of controversy based on the investigation. ...

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by rcair1
Thu Aug 18, 2016 6:49 pm
Forum: Civil Aviation
Topic: Senators Want Answers From Airlines On IT Failures
Replies: 55
Views: 4708

Re: Senators Want Answers From Airlines On IT Failures

Sheesh, there's a lot of anti-government sentiment in here. "Congress should fix congress first", etc. Well, this is the kind of thing governments *do*. If congress wants to "fix congress", it should be doing more stuff like this and less stuff like shutting the government down ...

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by rcair1
Mon Aug 15, 2016 10:49 pm
Forum: Technical/Operations
Topic: Donald Trump 757 - Exit Outlines
Replies: 18
Views: 3482

Re: Donald Trump 757 - Exit Outlines

SEPilot wrote:
IIRC, outlined exits are only a requirement for airliners, not private aircraft.

This is correct. Trump's plane is most likely flown under Part 91, which is what most Cessnas and Pipers fly under.

While completely true - this just cracked me up - comparing a 757 to a Cessna and Piper....

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by rcair1
Mon Aug 15, 2016 10:17 pm
Forum: Civil Aviation
Topic: EK521 TRV-DXB (777-300 A6-EMW) crash landing in DXB
Replies: 735
Views: 174887

Re: EK521 TRV-DXB (777-300 A6-EMW) crash landing in DXB

Aircraft perform 'Touch and Go' landings for training and maintenance purposes all the time. Are TOGA procedures all that much different ? Yes and no. A 'touch and go' is planned, so you touch down primed ready to 'go'. A missed approach (abandon the landing and go around before touching down) and ...

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by rcair1
Mon Aug 15, 2016 9:54 pm
Forum: Civil Aviation
Topic: NH Boeing 787-8 Dreamliner rejects take-off because of engine faillure
Replies: 37
Views: 11751

Re: NH Boeing 787-8 Dreamliner rejects take-off because of engine faillure

Didn't see this posted here yet, here is a video of the engine failure. https://www.youtube.com/watch?v=urpr59HpEuY Reference all the discussions about controlability at low and high speed, watch the rudder. Pretty cool. Initially pretty hard right, as you would expect from a loss of #1, then prett...

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by rcair1
Tue Aug 02, 2016 10:47 pm
Forum: Civil Aviation
Topic: Why did airlines abandon 2-5-2 seating?
Replies: 55
Views: 14786

Re: Why did airlines abandon 2-5-2 seating?

As uncomfortable as it is for 12+ hours in economy, the 2-5-2 seating in the KE 772 made it somewhat bearable to sit at one of the window seats. Why are airlines now opting for 3-3-3? Wouldn't that make 2 entire window seat aisles basically unusable compared to the single bad aisle in the 2-5-2 arr...

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by rcair1
Wed Jul 27, 2016 7:29 pm
Forum: Military Aviation & Space Flight
Topic: KC-46 Production, Testing And Delivery
Replies: 1690
Views: 166889

Re: KC-46 Production, Testing And Delivery Part 4

Throwing resources at a late program make it .... later :-) (original from "Mythical Man Month: .. throwing manpower at a late ... ) Throwing hardware at it may not be the same as mythical man month. And believe me - I've been in the middle of a few mythical man months. If tests are taking lon...

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by rcair1
Wed Jul 27, 2016 7:11 pm
Forum: Civil Aviation
Topic: Egypt Air 804 Paris-Cairo Missing
Replies: 1187
Views: 78759

Re: Egypt Air 804 Paris-Cairo Missing Part 5

Maybe I missed something in your argumentation. You rule out terrorism because they tried to extinguish a fire ? This doesn't make any sense! Unless it is not clear what the source of the fire was you cannot rule out anything! The source of the fire could have been a bomb as well. It technically co...

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by rcair1
Thu Jul 07, 2016 2:49 pm
Forum: Civil Aviation
Topic: Bell 525 Prototype Crashes Killing 2
Replies: 3
Views: 1333

Bell 525 Prototype Crashes Killing 2

One of the 2 Bell 525 Relentless Prototypes crashed yesterday killing both people on board. Sad day for Bell and for the families. Related stories http://www.verticalmag.com/news/two-kil ... -07-16-opt http://www.wfaa.com/news/local/helicopt ... /265212099 Prayers for the families and employees of B...

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by rcair1
Tue Jul 05, 2016 10:59 pm
Forum: Travel, Polls & Preferences
Topic: Worst Airplane Airport Or Aviation Movies
Replies: 45
Views: 9934

Re: RE: Worst Airplane Airport Or Aviation Movies

Can anybody list good movies also? I don't know much about movies. Rajrs. I liked "birds of prey" and "the secret war of Jackie's girls" At least I seem to have fond memories of them from long ago. Birds of prey has crazy helicopter flight scenes. Secret way was set in very earl...

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by rcair1
Tue Jul 05, 2016 7:38 pm
Forum: Technical/Operations
Topic: Helicopters on FlightAware
Replies: 2
Views: 1907

Re: Helicopters on FlightAware

I think it has mostly to do with helicopter traffic filing flight plans. I've noticed a few heli's over time, but the majority do not show up. That is even when I know they are up and flying (since I work in aerial firefighting that is common). I wish they did.

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by rcair1
Tue Jul 05, 2016 7:18 pm
Forum: Civil Aviation
Topic: SQ 368 engine catches fire
Replies: 302
Views: 68718

Re: SQ 368 engine catches fire

I'm sorry Zeke. Based upon my 30 or so years of firefighting, that was not 'thin layer of oil' burning. There was significant fuel there (fuel from the sense of a combustible material). I am very disappointed with your comments. Oh no - my life is over... ;) Let me put it another way, if 35l of oil...

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by rcair1
Fri Jul 01, 2016 10:18 pm
Forum: Civil Aviation
Topic: SQ 368 engine catches fire
Replies: 302
Views: 68718

Re: SQ 368 engine catches fire

What was burning was a thin layer of engine oil that migrated across the wing due to airflow. The metallic wing did not burn, nor was the fuel tank compromised. Now if you go back to you basic fire triangle, fuel, heat, air. The fuel was limited to the thin layer of oil that remained attached to th...

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by rcair1
Fri Jul 01, 2016 10:04 pm
Forum: Civil Aviation
Topic: SQ 368 engine catches fire
Replies: 302
Views: 68718

Re: SQ 368 engine catches fire

If the fire is inside the cabin, not opening doors will pretty soon give you a lesson in chemistry, the one where oxygen oxidizes carbon (as in burning the interior up) and forms carbon (di)oxide. But it is absolutely true that opening doors will "fuel" the fire. In an in-cabin fire situa...

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by rcair1
Mon Jun 20, 2016 6:16 pm
Forum: Civil Aviation
Topic: Aviation Gazette: Singapore Airlines Airbus A350XWB has hydraulic failure
Replies: 14
Views: 4469

Re: Aviation Gazette: Singapore Airlines Airbus A350XWB has hydraulic failure

The rudder provides authority only down to a certain airspeed.
The nosewheel will castor to straight by default. Of course, if you have significant cross wind it can be interesting, but remember, you have differential brakes. You can brake on one side or the other.

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by rcair1
Mon Jun 20, 2016 3:56 pm
Forum: Civil Aviation
Topic: SFO Simultaneous Landing (2x UA), 800 Feet Apart!
Replies: 38
Views: 10896

Re: SFO Simultaneous Landing (2x UA), 800 Feet Apart!

One question though: is is somehow related to the aircraft type - say, you wouldn't prefer that with a B737 / A380 combo? IF wake turbulence is an issue then the larger (wake category) aircraft cannot pass the smaller. They can get right next to each other and the smaller is allowed to pass the lar...

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by rcair1
Fri Jun 10, 2016 2:45 pm
Forum: Civil Aviation
Topic: Egypt Air 804 Paris-Cairo Missing
Replies: 1187
Views: 78759

RE: Egypt Air 804 Paris-Cairo Missing Part 5

<table border="0" align="CENTER" width="95%" class="quote"><tr><td><font size="2" face="ARIAL, Helvetica, Geneva" color="#9A9DA0">Quoting <a href="/profile/sovietjet" class="quote" target="_blank">sovietjet</a> (<a href="#187" class="quote">Reply 187</a>):<br/><i>Yea just those two, but isn't that e...

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by rcair1
Thu Jun 09, 2016 10:34 pm
Forum: Civil Aviation
Topic: Egypt Air 804 Paris-Cairo Missing
Replies: 1187
Views: 78759

RE: Egypt Air 804 Paris-Cairo Missing Part 5

<table border="0" align="CENTER" width="95%" class="quote"><tr><td><font size="2" face="ARIAL, Helvetica, Geneva" color="#9A9DA0">Quoting <a href="/profile/aeronaftis" class="quote" target="_blank">aeronaftis</a> (<a href="#165" class="quote">Reply 165</a>):<br/><i>Quoting rcair1 (Reply 163): What s...

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by rcair1
Wed Jun 08, 2016 9:54 pm
Forum: Civil Aviation
Topic: Egypt Air 804 Paris-Cairo Missing
Replies: 1187
Views: 78759

RE: Egypt Air 804 Paris-Cairo Missing Part 5

<table border="0" align="CENTER" width="95%" class="quote"><tr><td><font size="2" face="ARIAL, Helvetica, Geneva" color="#9A9DA0">Quoting <a href="/profile/D+L+X" class="quote" target="_blank">D L X</a> (<a href="#157" class="quote">Reply 157</a>):<br/><i>Adding extra batteries means extra maintenan...

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