Search found 831 matches

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by kalvado
Fri Jun 22, 2018 9:13 pm
Forum: Civil Aviation
Topic: Delta to ban pit bulls as service or emotional support
Replies: 60
Views: 5009

Re: Delta to ban pit bulls as service or emotional support

You're picking a completely different species to make your argument, and I stand by my point. Pit Bulls aren't inherently "prone to violence and savagery" any more than people are. Though by reading between the lines of many in this thread, I can see that I am in the minority for both spe...

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by kalvado
Tue Jun 19, 2018 2:10 pm
Forum: Civil Aviation
Topic: LH A340 damaged by pushback tug fire at FRA
Replies: 193
Views: 33862

Re: LH A340 damaged by pushback tug fire at FRA

Noshow wrote:
Below the line all tugs should get some foam fire supression system that is strong enough to fight any tug-fire. Just imagine some fully fueled and fully booked plane being ignited with the nose doors blocked next time.

How many such accidents happened over past year? 10 years?

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by kalvado
Tue Jun 19, 2018 1:14 pm
Forum: Civil Aviation
Topic: LH A340 damaged by pushback tug fire at FRA
Replies: 193
Views: 33862

Re: LH A340 damaged by pushback tug fire at FRA

seahawk wrote:
How do you believe the nose wheel of the aircraft were the core of the fire? Is the tug engine not much more likely.

I assume this is about tire exploding due to overheat and pressure buildup.

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by kalvado
Tue Jun 19, 2018 1:14 pm
Forum: Civil Aviation
Topic: LH A340 damaged by pushback tug fire at FRA
Replies: 193
Views: 33862

Re: LH A340 damaged by pushback tug fire at FRA

1. A brake man could have radioed ATC to have the fire services come down. We don't know if the tug driver was able to do that and precious time was lost, leading to the extensive damage. 2. A brake man could have communicated with the tug driver and coordinated transfer of onboard fire extinguishi...

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by kalvado
Tue Jun 19, 2018 12:48 pm
Forum: Civil Aviation
Topic: LH A340 damaged by pushback tug fire at FRA
Replies: 193
Views: 33862

Re: LH A340 damaged by pushback tug fire at FRA

What difference would a brake man have made? That tug was the type that picks up and lufts the nose gear. All functions are controlled by the Driver. Rest assured that the ground Crew receives proper Training at FRA. Here you cannot even drive a car without having a Fraport driving license addition...

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by kalvado
Tue Jun 19, 2018 12:34 pm
Forum: Civil Aviation
Topic: LH A340 damaged by pushback tug fire at FRA
Replies: 193
Views: 33862

Re: LH A340 damaged by pushback tug fire at FRA

Not sure what a guy in the cockpit could have done in this case .. the tug-driver is in contact with ground control so they would definitely be aware of the fire and send help. bug 'Waterbomber' would apparently have the person pop a slide and start tossing down fire extinguisher to the guys at the...

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by kalvado
Wed Jun 13, 2018 10:18 pm
Forum: Technical/Operations
Topic: Is fewer fan blades better?
Replies: 18
Views: 1961

Re: Is fewer fan blades better?

Another example of sprouting prop blades is WWII Spitfire which started with 2-blade wooden prop and went through 13 prop designs (Thirteen!!!!) - and up to 6 blades, I believe. Or maybe more. I believe that increase of blade number, with pitch being the same, requires more power from engine - or, t...

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by kalvado
Sat Jun 09, 2018 8:47 pm
Forum: Technical/Operations
Topic: Refueling during boarding/deplaning?
Replies: 69
Views: 4144

Re: Refueling during boarding/deplaning?

NFPA 407 (5.11 is the specific section to this topic) is the regulation used in the US for fueling aircraft. The NFPA does not make laws, they make recommendations that may or may not be adopted into law, rules, regulations, policies, procedures, etc. If the FAA, or the DOT, has not promulgated a r...

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by kalvado
Tue Jun 05, 2018 11:57 am
Forum: Technical/Operations
Topic: Air Transat Flight 236: questions for pilots and other experts
Replies: 10
Views: 1477

Re: Air Transat Flight 236: questions for pilots and other experts

Electrics would be generated by the Emergency Generator, running off Green hydraulic system pressure. Normally you'd have 2 engine driven generators giving 115KVA each. On the RAT you get a whopping 8KVA until you go under 260 knots, at which point you get only 3.5KVA. In a masterful understatement...

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by kalvado
Tue Jun 05, 2018 11:00 am
Forum: Technical/Operations
Topic: Refueling during boarding/deplaning?
Replies: 69
Views: 4144

Re: Refueling during boarding/deplaning?

Not really affected, but a close call: https://aviation-safety.net/database/record.php?id=20010905-1 A failure to follow procedure and/or a failure of training. How many before that and since? I’m sure that procedures were reviewed and modified, if necessary. And, trying and oversight stepped up fo...

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by kalvado
Mon Jun 04, 2018 11:42 pm
Forum: Technical/Operations
Topic: Refueling during boarding/deplaning?
Replies: 69
Views: 4144

Re: Refueling during boarding/deplaning?

Honestly, can anyone here cite an occurrence where a passenger was affected by fuelling when on board? This is an honest question. I can't find any example of any fire when fuelling that affected a passenger. Not really affected, but a close call: https://aviation-safety.net/database/record.php?id=...

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by kalvado
Mon Jun 04, 2018 1:47 pm
Forum: Technical/Operations
Topic: Refueling during boarding/deplaning?
Replies: 69
Views: 4144

Re: Refueling during boarding/deplaning?

I can't imagine an airline operation without fuelling when passengers are on board. With narrow bodies taking about 30 minues to refuel and some widebodies taking twice that, it would put a dent in fast turn around times. [....] It is not a matter of cost, more a matter of risk management. Let's fa...

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by kalvado
Sun Jun 03, 2018 8:39 pm
Forum: Technical/Operations
Topic: Refueling during boarding/deplaning?
Replies: 69
Views: 4144

Re: Refueling during boarding/deplaning?

Let me give an example and let me know what you think should be done regarding this very common practice. Your on a flight from LAX to HKG (747-400) and you're using a redispatch flight plan. TPE is your redispatch airport an on this day the winds are not favorable so in fact you land at TPE and pa...

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by kalvado
Mon May 28, 2018 3:07 pm
Forum: Civil Aviation
Topic: Concorde, was it bound for disaster?
Replies: 76
Views: 10014

Re: Concorde, was it bound for disaster?

We have a technology 1000+ times more powerful and 1000+ times cheaper than 30, 40 or 50 years ago, and also is much more reliable, yet we do fly subsonic. Making a comparison between 1900 to 1950 and 1950 to 2000 there's absolutely no chance... how many discoveries and leaps forward have been made...

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by kalvado
Mon May 28, 2018 12:56 pm
Forum: Civil Aviation
Topic: Concorde, was it bound for disaster?
Replies: 76
Views: 10014

Re: Concorde, was it bound for disaster?

OK nice comparison with the F-35. I do remember in the early 1990's reading about those new experimental airplanes, XF-22 and XF-23, an air superiority fighter built to replace the F-15. That eventually has become the F-22, build in (if I do remember correctly) 180 - 190 pcs due to the high price. ...

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by kalvado
Thu May 24, 2018 5:55 pm
Forum: Civil Aviation
Topic: FAA Gives Final Approval to 777X Folding Wings
Replies: 110
Views: 12001

Re: FAA Gives Final Approval to 777X Folding Wings

Advisory to the overly cautious: Prepare to walk in the future. It is probable that most future designs will include folding wingtips. I expect those thousands of 797s will have them, so they can park in the 320/737 spaces. And if the 380 ever re-wings ....... Yes!!! I will be shocked if the 797 do...

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by kalvado
Thu May 24, 2018 3:04 pm
Forum: Civil Aviation
Topic: FAA Gives Final Approval to 777X Folding Wings
Replies: 110
Views: 12001

Re: FAA Gives Final Approval to 777X Folding Wings

To be fair, the big difference between these tips and flaps/slats is the motion. It's easy for the layman to feel that there's going to be a very large moment concentrated on a small hinge in the case of the wingtip, while other edge devices have loads more in-line with the wing structures, spread ...

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by kalvado
Thu May 24, 2018 12:46 pm
Forum: Civil Aviation
Topic: FAA Gives Final Approval to 777X Folding Wings
Replies: 110
Views: 12001

Re: FAA Gives Final Approval to 777X Folding Wings

It's not just a feature that would allow larger A/C into ICAO Code E/ FAA Group V gates. The cost and inconvenience of reconfiguring a gate or two is a drop in the bucket to having to reconfigure airport taxiways to accommodate a large number of super wide A/C. When I worked ATC at ORD there was a ...

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by kalvado
Wed May 23, 2018 9:44 pm
Forum: Civil Aviation
Topic: FAA Gives Final Approval to 777X Folding Wings
Replies: 110
Views: 12001

Re: FAA Gives Final Approval to 777X Folding Wings

Did any airport operator agreed to charge it as Code E? Or, folding tips are great, but pay us Code F rates. Huh? Per passenger fees MTOW fees Gate occupied fees. Which is E. The aircraft is Code E. There is nothing to agree to. FAA sets the rules. If a country wants to be arbitrary and not accept ...

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by kalvado
Wed May 23, 2018 4:48 pm
Forum: Civil Aviation
Topic: AA2233 declares emergency.
Replies: 53
Views: 14203

Re: AA2233 declares emergency.

And why should people have to do that when reading a thread? Because this is a worldwide forum and there are 17, 678 commercial airports in the world and it's a pain in the arse trying look them up all the time, I'm in MZY. You could just write the city name and then nobody would have to look thing...

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by kalvado
Wed May 23, 2018 4:10 pm
Forum: Civil Aviation
Topic: FAA Gives Final Approval to 777X Folding Wings
Replies: 110
Views: 12001

Re: FAA Gives Final Approval to 777X Folding Wings

Just wondering, how likely such scenario is: -777x approved with folding wingtips, and feature is used at some gates -a few years later most gates are reconfigured for full wingspan, and use of folding feature is reduced to save on turnaround time and maintenance -Boeing introduces "no-fold&quo...

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by kalvado
Tue May 22, 2018 9:57 pm
Forum: Civil Aviation
Topic: Concorde, was it bound for disaster?
Replies: 76
Views: 10014

Re: Concorde, was it bound for disaster?

Statistics needs a big sample size... No. Sample size ( absolute, relative ) is a well understood thing. Flight hours vs hull losses is a useful metric. Number of frames less so. ( Concorde had one batch manufacture and flying for umpteen years. 747 had continuous production and retirement. ) Adden...

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by kalvado
Tue May 22, 2018 6:48 pm
Forum: Civil Aviation
Topic: Airliners: The Most Uncompetitive Industry?
Replies: 87
Views: 7622

Re: Airliners: The Most Uncompetitive Industry?

I always assumed that this is about development cost and demand. More complex production with higher development costs tend to benefit from spreading over larger number of sales. I am not sure about car development costs - but given millions of sales per model, those costs can be spread thin. In air...

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by kalvado
Tue May 22, 2018 3:11 pm
Forum: Civil Aviation
Topic: Concorde, was it bound for disaster?
Replies: 76
Views: 10014

Re: Concorde, was it bound for disaster?

May I ask another question: Why aren't we capable to desing, build and fly a supersonic airliner? We do have more technology, more innovative materials, state of the art engineers. Is it like that internet joke, "my phone has thousand times the computing power the Apollo lunar capsule had"...

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by kalvado
Tue May 22, 2018 3:07 pm
Forum: Civil Aviation
Topic: Concorde, was it bound for disaster?
Replies: 76
Views: 10014

Re: Concorde, was it bound for disaster?

A blown tire leading to a catastrophic explosion is a design flaw. sometimes all holes align. probability is what counts. Look at exploding tankage on 747 :-) Frankly speaking, nobody can tell what would operation history be if Concorde had 1500-strong fleet like 747 had, not 100 times smaller one....

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by kalvado
Mon May 21, 2018 9:55 pm
Forum: Civil Aviation
Topic: Baboon on the loose at SAT
Replies: 19
Views: 3021

Re: Baboon on the loose at SAT

Runway28L wrote:
When I imagined the emotional support animal scenario couldn't get any crazier...

Except for it is not an emotional support animal. Read those tweets

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by kalvado
Sat May 19, 2018 6:17 pm
Forum: Civil Aviation
Topic: Methamphetamine Indictments for DFW AA subsidary employees
Replies: 18
Views: 3326

Re: Methamphetamine Indictments for DFW AA subsidary employees

OB1504 wrote:
7H4 wrote:
Why would a fueler bring a bottle of Jet A through security?

That is exactly my point. You can perform a full strip and cavity search at entrance, but once on the ramp people have access to all sort of hazardous objects.

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by kalvado
Fri May 18, 2018 11:36 am
Forum: Civil Aviation
Topic: Methamphetamine Indictments for DFW AA subsidary employees
Replies: 18
Views: 3326

Re: Methamphetamine Indictments for DFW AA subsidary employees

Wouldn't there be exemptions for critical parts and tools? And would the use of such items be tightly controlled? So who and how should control pilot's access to cockpit? And cockpit is where most critical parts and systems are located. Or who, and how, should control every ramper loading bags in a...

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by kalvado
Thu May 17, 2018 1:44 pm
Forum: Civil Aviation
Topic: Methamphetamine Indictments for DFW AA subsidary employees
Replies: 18
Views: 3326

Re: Methamphetamine Indictments for DFW AA subsidary employees

I'm not sure how it is at DFW or other airports but at my airport airside employees go through basically no security with only very sporadic (maybe once or twice a month) backpack/purse checks. It amazes me that security is still that relaxed in 2018. Indeed, it is surprising, especially in the pos...

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by kalvado
Mon May 14, 2018 3:41 pm
Forum: Technical/Operations
Topic: Cockpit location
Replies: 25
Views: 3299

Re: Cockpit location

I'm not sure that sticking the flight deck below the floor would be a good idea. Certainly in a plane like the 737, A320, CRJ, and ERJ, you don't have the space to do that anyway. As for video technology, suppose that fails. Then what. Also, where below the floor would you put it. In the nose? You ...

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by kalvado
Mon May 14, 2018 3:18 pm
Forum: Technical/Operations
Topic: Cockpit location
Replies: 25
Views: 3299

Re: Cockpit location

Yes, the cockpit is in the front, so if a fatal mistake is made, the pilots die first. Any particular case when front of the aircraft was affected, but not the back? I can think of one.. And extra 0.1 second in case of crash makes little, if any, difference. Only to jump the line to St. Peter, mayb...

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by kalvado
Sat May 12, 2018 4:00 pm
Forum: Technical/Operations
Topic: Could regional aircraft be more like buses?
Replies: 18
Views: 1713

Re: Could regional aircraft be more like buses?

Why not just use a large helicopter like a Chinook? You wouldnt need large tracts of land for a runway nor find ATPL-licensed pilots. Just a cement slab and large-ish bus shelter. Maybe someone in the States can confirm this, but if you plan to operate an airline with helicopters, the pilots will s...

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by kalvado
Sat May 12, 2018 1:52 pm
Forum: Technical/Operations
Topic: Could regional aircraft be more like buses?
Replies: 18
Views: 1713

Re: Could regional aircraft be more like buses?

Try to estimate how much airframe acquisition cost would contribute towards the fare (hint - ERJ is about $15M, bus is about $400K), how much energy (fuel) would cost and guess how much insurance would be for a vehicle which can literally fall out of the sky at any second. There are about 80,000 bu...

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by kalvado
Sat May 12, 2018 12:03 am
Forum: Technical/Operations
Topic: Could regional aircraft be more like buses?
Replies: 18
Views: 1713

Re: Could regional aircraft be more like buses?

Try to estimate how much airframe acquisition cost would contribute towards the fare (hint - ERJ is about $15M, bus is about $400K), how much energy (fuel) would cost and guess how much insurance would be for a vehicle which can literally fall out of the sky at any second.

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by kalvado
Fri May 11, 2018 5:39 pm
Forum: Civil Aviation
Topic: WestJet pilots vote overwhelmingly in favour of strike action
Replies: 53
Views: 5767

Re: WestJet pilots vote overwhelmingly in favour of strike action

I would attempt to resolve the issue between me and my employer the same way the millions of non-unionized employees* in Canada already do. If you are no longer comfortable with the pay/benefits you currently receive, you talk to your employer about it. If your employer is unwilling to budge on any...

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by kalvado
Fri May 11, 2018 5:03 pm
Forum: Civil Aviation
Topic: WestJet pilots vote overwhelmingly in favour of strike action
Replies: 53
Views: 5767

Re: WestJet pilots vote overwhelmingly in favour of strike action

And while we're at this - do you guys know any company which works on single pilot technology? May be a good investment for my money.. Actually kalvado, WestJet could be an operator of single pilot aircraft (i.e. CapeAir C402s right now, or single-pilot 737s a hundred years from now), but this issu...

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by kalvado
Fri May 11, 2018 4:28 pm
Forum: Civil Aviation
Topic: WestJet pilots vote overwhelmingly in favour of strike action
Replies: 53
Views: 5767

Re: WestJet pilots vote overwhelmingly in favour of strike action

Now, explain to me how pilots are supposed to strike against the company and not affect passengers? The only thing I can think of is a bus strike where the bus drivers kept driving, but refused to accept payment for fares. Unfortunately pilots can't do that, or I'm sure they would. I'd still rather...

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by kalvado
Fri May 11, 2018 3:06 pm
Forum: Civil Aviation
Topic: WestJet pilots vote overwhelmingly in favour of strike action
Replies: 53
Views: 5767

Re: WestJet pilots vote overwhelmingly in favour of strike action

Not the case at all. The other ALPA carriers would be showing solidarity with the WS ALPA members. Why would you undermine other dues paying members? No one is being held hostage. If you're concerned that labour action might disrupt your plans, book a different carrier. Seems simple enough. Of cour...

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by kalvado
Fri May 11, 2018 2:32 pm
Forum: Civil Aviation
Topic: WestJet pilots vote overwhelmingly in favour of strike action
Replies: 53
Views: 5767

Re: WestJet pilots vote overwhelmingly in favour of strike action

Nobody strikes to hurt the passengers. They strike because they have exhausted all other options. That's how I see this chain of events. The Westjet pilots don't want to strike. They don't want anything outlandish, they just want the opportunity to negotiate. It appears that option has been continu...

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by kalvado
Fri May 11, 2018 11:40 am
Forum: Civil Aviation
Topic: WestJet pilots vote overwhelmingly in favour of strike action
Replies: 53
Views: 5767

Re: WestJet pilots vote overwhelmingly in favour of strike action

This is a great thread. Literally a textbook example of how to turn someone from being union- neutral to mildly union-curious into a strong anti-union in 3 minutes.

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by kalvado
Thu May 10, 2018 3:59 pm
Forum: Civil Aviation
Topic: Bloomberg article: Watch Out, Airlines. High Speed Rail Now Rivals Flying on Key Routes
Replies: 239
Views: 19014

Re: Bloomberg article: Watch Out, Airlines. High Speed Rail Now Rivals Flying on Key Routes

As per the report 民航局与铁路总公司合作 共同推动机场和高铁“零换乘”CAAC and China Raiway Corporation push for seamless interchange btwn airports and HSR , on Thur May 10, CAAC and China Railway Corporation signed a strategic cooperation agreement to push for integrated air-rail transportation in five aspects: improving i...

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by kalvado
Thu May 10, 2018 2:38 pm
Forum: Technical/Operations
Topic: Are the Trent 800 and PW4090/4098 engines still being made?
Replies: 12
Views: 3315

Re: Are the Trent 800 and PW4090/4098 engines still being made?

And let me ask a somewhat tangential question - how does engine service life related to airframe service life? Just for example, lets say airline orders 100 twin-jets today with 200 on-wing engines, with intention to fly those planes until retirement - for 20 years, 100k hours. And they want to own ...

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by kalvado
Thu May 10, 2018 12:31 pm
Forum: Civil Aviation
Topic: Dallas says it has a plan to resolve Southwest-Delta fight for Love Field gates
Replies: 320
Views: 26393

Re: Dallas says it has a plan to resolve Southwest-Delta fight for Love Field gates

Is there anything in writing defining "new entrant" as a carrier not operating at the time of agreement being signed? The closest analog to such verbiage exists in a 2014 Love Field Gate Leases briefing memorandum from Dallas' Assistant City Manager to the Dallas City Council members that...

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by kalvado
Wed May 09, 2018 11:10 pm
Forum: Civil Aviation
Topic: Dallas says it has a plan to resolve Southwest-Delta fight for Love Field gates
Replies: 320
Views: 26393

Re: Dallas says it has a plan to resolve Southwest-Delta fight for Love Field gates

Actually, DL would be considered a new entrant since it did not have existing scheduled service at DAL when the 5-party went into effect. But they did have service via gate sublease - and lost that sublease - before current situation. I don't see a legal definition of "new entrant" in any...

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by kalvado
Wed May 09, 2018 10:14 pm
Forum: Civil Aviation
Topic: Dallas says it has a plan to resolve Southwest-Delta fight for Love Field gates
Replies: 320
Views: 26393

Re: Dallas says it has a plan to resolve Southwest-Delta fight for Love Field gates

Would DL count as a new entrant, though? Actually, DL would be considered a new entrant since it did not have existing scheduled service at DAL when the 5-party went into effect. But they did have service via gate sublease - and lost that sublease - before current situation. I don't see a legal def...

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by kalvado
Wed May 09, 2018 10:02 pm
Forum: Civil Aviation
Topic: Dallas says it has a plan to resolve Southwest-Delta fight for Love Field gates
Replies: 320
Views: 26393

Re: Dallas says it has a plan to resolve Southwest-Delta fight for Love Field gates

1. How did DL get that gate if not part of the original Five Party Agreement and didn’t purchase it? How are they allowed to “legally trespass”? The 5-party agreement and the Wright Amendment Reform Act of 2006 does allow the City of Dallas to require WN, UA, and AA to share gates with new entrant ...

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by kalvado
Tue May 08, 2018 8:06 pm
Forum: Civil Aviation
Topic: Bloomberg article: Watch Out, Airlines. High Speed Rail Now Rivals Flying on Key Routes
Replies: 239
Views: 19014

Re: Bloomberg article: Watch Out, Airlines. High Speed Rail Now Rivals Flying on Key Routes

If you compare road and rail than you should compare the whole traffic structure, not parts with parts. If you look at a typical German main line double track, where one track is mainly used in one direction and the other in the other, we talk about mixed use. You will see high speed trains ICE, in...

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by kalvado
Tue May 08, 2018 6:39 pm
Forum: Civil Aviation
Topic: Bloomberg article: Watch Out, Airlines. High Speed Rail Now Rivals Flying on Key Routes
Replies: 239
Views: 19014

Re: Bloomberg article: Watch Out, Airlines. High Speed Rail Now Rivals Flying on Key Routes

If you compare road and rail than you should compare the whole traffic structure, not parts with parts. If you look at a typical German main line double track, where one track is mainly used in one direction and the other in the other, we talk about mixed use. You will see high speed trains ICE, in...

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by kalvado
Tue May 08, 2018 5:05 pm
Forum: Civil Aviation
Topic: Bloomberg article: Watch Out, Airlines. High Speed Rail Now Rivals Flying on Key Routes
Replies: 239
Views: 19014

Re: Bloomberg article: Watch Out, Airlines. High Speed Rail Now Rivals Flying on Key Routes

If you look at urban and local rail, throughput is much higher. The Singapore MRT can carry up to 1920 passengers at 80km/h and runs every few minutes at peak times. The issue with parking and combining cars and rail in general is of course still there. It is one reason why HSR is much easier to im...

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