Search found 726 matches

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by 747Whale
Sun Mar 31, 2019 5:14 am
Forum: Travel, Polls & Preferences
Topic: Highest cycles and Hours of various aircraft
Replies: 1
Views: 696

Re: Highest cycles and Hours of various aircraft

Life limits on airframe and components are individual; in most aircraft you really can't go by a hour life or cycle life; you need to look at specific limiting components. The aft pressure bulkhead, on many aircraft is a life limiting component. Others may include spar straps, keel beams, or other e...

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by 747Whale
Sun Mar 31, 2019 5:09 am
Forum: Travel, Polls & Preferences
Topic: Soft product in first and business class in US airlines
Replies: 4
Views: 1036

Re: Soft product in first and business class in US airlines

I don't think I've ever seen a customer survey on a US domestic flight.

Most passengers are simply glad to get out.

The most dismal service I've had of late was British Airways.

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by 747Whale
Sun Mar 31, 2019 5:07 am
Forum: Travel, Polls & Preferences
Topic: TSA/Global Entry ..Turned Away
Replies: 11
Views: 1202

Re: TSA/Global Entry ..Turned Away

I have global entry (and accordingly, pre-check). I don't need it except when coming back into the country, because I pass through the "known crewmember" portal. However, even in uniform, even with known crewmember identification and crew badge and personal ID, I seldom get the pre-check I...

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by 747Whale
Sun Mar 31, 2019 4:58 am
Forum: Travel, Polls & Preferences
Topic: Unusual incidents in commercial aviation
Replies: 39
Views: 5041

Re: Unusual incidents in commercial aviation

bolbibug wrote:

I wonder what checklist item covers avoiding hitting a cow during landing.


Evacuation checklist, after the aircraft comes to a stop.

No checklist required for the cow. It's operational.

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by 747Whale
Sun Mar 31, 2019 4:56 am
Forum: Travel, Polls & Preferences
Topic: How many US states have you visited?
Replies: 91
Views: 5805

Re: How many US states have you visited?

All of them.

Some, only because they were on fire.

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by 747Whale
Sun Mar 31, 2019 4:54 am
Forum: Travel, Polls & Preferences
Topic: What's your favorite/least favorite airport to connect through?
Replies: 77
Views: 5819

Re: What's your favorite/least favorite airport to connect through?

Least favorites: Heathrow, Jeddah, Bagdhad, Jordan.

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by 747Whale
Sun Mar 31, 2019 4:51 am
Forum: Travel, Polls & Preferences
Topic: Question about SSSS
Replies: 14
Views: 1357

Re: Question about SSSS

SSSS is selective screening, and it has nothing to do with arrivals; it's screening for the flight. When you get off the flight, nobody know and nobody cares what your status was when you got on. Ancient history. If you end up with any additional issues with customs, that's something unrelated and e...

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by 747Whale
Sun Mar 31, 2019 4:37 am
Forum: Technical/Operations
Topic: Electric nose wheels
Replies: 49
Views: 2775

Re: Electric nose wheels

kitplane01 wrote:
Wheeltug says it works, and has tested it with a real 737. Maybe they are telling lies, but the claim is that it works for a taxi to the runway.


It's always best, when seeking truthful, accurate information, to get it from the salesman. Right?

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by 747Whale
Sun Mar 31, 2019 4:36 am
Forum: Technical/Operations
Topic: Aero Commander 500 - floatplane conversion and reverse thrust
Replies: 9
Views: 974

Re: Aero Commander 500 - floatplane conversion and reverse thrust

The Twin Commander and Turbine Commander uses steering through the rudder pedals, but it's actuated via the brakes; push down part way on the brake, and you get steering, Push a little further, and you get brake. New Twin Commander pilots are easy to spot because the airplane is making left and righ...

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by 747Whale
Sun Mar 31, 2019 2:15 am
Forum: Technical/Operations
Topic: Electric nose wheels
Replies: 49
Views: 2775

Re: Electric nose wheels

Pushing back with an electric drive on the nosewheel and no engine thrust means that the thrust isn't there to stop rear motion and unlike a tug (or counter a tipping moment), which keeps the aircraft from tipping when braking in rear movement, there's nothing holding that nosewheel down when the pi...

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by 747Whale
Sun Mar 31, 2019 2:12 am
Forum: Technical/Operations
Topic: Aero Commander 500 - floatplane conversion and reverse thrust
Replies: 9
Views: 974

Re: Aero Commander 500 - floatplane conversion and reverse thrust

Ground handling of the Twin Commander or Turbo Commander isn't a problem; if someone is having difficulty is point to the need for a bit more training. It's similar in handling to a Learjet or Piaggio Avanti.

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by 747Whale
Sat Mar 30, 2019 7:12 pm
Forum: Technical/Operations
Topic: MAX nacelle, AOA, center of lift, and C/G
Replies: 193
Views: 13706

Re: MAX nacelle, AOA, center of lift, and C/G

NO. Stop propagating incorrect information. It has NOTHING to do with thrust. In fact the moment arm is REDUCED because the thrust-line is higher and nearer the datum line. This has been dealt with a hundred times on Pprune and on a.net too I'm sure. It is ENTIRELY about the aerodynamic effects of ...

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by 747Whale
Sat Mar 30, 2019 7:05 pm
Forum: Technical/Operations
Topic: MAX certification: new systemic issues identified
Replies: 109
Views: 10893

Re: MAX certification: new systemic issues identified

UPRT/EET = Upset-Recovery training, and extended envelope training. Full stall training in light aircraft was done in multi engine, including engine-out conditions, and that was discontinued a number of years ago due to numerous departures and a mishap rate greater in training than in the field. Tha...

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by 747Whale
Sat Mar 30, 2019 6:59 pm
Forum: Technical/Operations
Topic: Aero Commander 500 - floatplane conversion and reverse thrust
Replies: 9
Views: 974

Re: Aero Commander 500 - floatplane conversion and reverse thrust

I'm not aware of any propellers available for the 500 series Commanders that have reverse thrust capability Why would you want it on a commander on floats? Reverse is available on the turbine commander, but it is little to no value on a float equipped aircraft. I suspect it's possible to put floats ...

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by 747Whale
Sat Mar 30, 2019 4:17 pm
Forum: Technical/Operations
Topic: When the automatic stabilizer had to be turned off, do pilots get the pitch back to normal fast enough?
Replies: 22
Views: 2401

Re: When the automatic stabilizer had to be turned off, do pilots get the pitch back to normal fast enough?

May I ask again whether I have understood it. So, normally you at first reset the pitch trim by using control wheel switches. Only then you shut off the stab trim. And operating manually on the wheel is for the time when stab trim is no longer available, when it's shut off or broken. And "1) s...

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by 747Whale
Sat Mar 30, 2019 8:14 am
Forum: Technical/Operations
Topic: MAX nacelle, AOA, center of lift, and C/G
Replies: 193
Views: 13706

Re: MAX nacelle, AOA, center of lift, and C/G

Optimum and rec max are often no more than a thousand feet apart. Say you take a step climb early in order to avoid being kept low later. You're now within, say, 200 feet of rec max, but still below it so all good. It doesn't take a big temperature increase or wind shift to take you outside the com...

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by 747Whale
Sat Mar 30, 2019 8:10 am
Forum: Technical/Operations
Topic: The Plane Crash (Documentary)
Replies: 3
Views: 1227

Re: The Plane Crash (Documentary)

Gear down and slow down for stability and increased control. Slower speeds with the crew not aboard as minimum margins less than with personnel aboard can be performed without risk to the personnel. It's not a function of their reduced weight.

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by 747Whale
Sat Mar 30, 2019 5:40 am
Forum: Technical/Operations
Topic: MAX nacelle, AOA, center of lift, and C/G
Replies: 193
Views: 13706

Re: MAX nacelle, AOA, center of lift, and C/G

In normal operations, they won't be close and won't be a concern. I beg to differ. Margins can be small at high altitude and weight. Throw in a temperature hike as mentioned by zeke, and then some shifting winds... Not at optimum or within a couple thousand feet thereof, and one shouldn't be operat...

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by 747Whale
Sat Mar 30, 2019 4:26 am
Forum: Technical/Operations
Topic: Aircraft Brakes
Replies: 39
Views: 2389

Re: Aircraft Brakes

[quote="kitplane01"
My idea was that since steel and carbon brakes have different wear causes,...[/quote]

They don't.

You think they do because you read part of something that you didn't understand on the internet.

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by 747Whale
Fri Mar 29, 2019 6:18 pm
Forum: Technical/Operations
Topic: MAX nacelle, AOA, center of lift, and C/G
Replies: 193
Views: 13706

Re: MAX nacelle, AOA, center of lift, and C/G

In normal operations, they won't be close and won't be a concern.

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by 747Whale
Fri Mar 29, 2019 6:15 pm
Forum: Technical/Operations
Topic: MAX certification: new systemic issues identified
Replies: 109
Views: 10893

Re: MAX certification: new systemic issues identified

Something I was curious about is that I thought read that MCAS only becomes operational at flaps full up. So if the MCAS autotrim issue didn't become obvious until flaps Zero, wouldn't have been prudent to return to flaps one airspeed permitting? I could see after the single AOA input issues is red...

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by 747Whale
Fri Mar 29, 2019 6:08 pm
Forum: Technical/Operations
Topic: Electric nose wheels
Replies: 49
Views: 2775

Re: Electric nose wheels

How is it safer for a pilot to back the aircraft using a "wheel tug" without any ability to see where he's going? A tug operator can see under the aircraft, and around it, and can much more effectively maneuver the aircraft out of parking and into place. Further, stopping rearward movement...

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by 747Whale
Fri Mar 29, 2019 4:42 pm
Forum: Technical/Operations
Topic: When the automatic stabilizer had to be turned off, do pilots get the pitch back to normal fast enough?
Replies: 22
Views: 2401

Re: When the automatic stabilizer had to be turned off, do pilots get the pitch back to normal fast enough?

Digging back to what I think was the idea of the question (even if somewhat confusingly phrased) ... Let's posit that MCAS has spun the trim to a large extent, creating the types of control issues suspected to have led to these crashes. Moving the trim back into its normal position would be the mos...

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by 747Whale
Fri Mar 29, 2019 4:04 pm
Forum: Technical/Operations
Topic: MAX nacelle, AOA, center of lift, and C/G
Replies: 193
Views: 13706

Re: MAX nacelle, AOA, center of lift, and C/G

A large transport category airplane, operated at or below its optimum altitude (or even a couple thousand feet above optimum), will never come close to "coffin corner." Most transport category aircraft lack the thrust to get there in the first place, but normal operations do not ever place...

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by 747Whale
Fri Mar 29, 2019 3:10 pm
Forum: Technical/Operations
Topic: Flying the Plane, versus systems management flying
Replies: 80
Views: 9074

Re: Flying the Plane, versus systems management flying

Under power lines? Very professional! Each time you cut a power line, remember that you may be cutting off grandma's medical devices or a hospital's electricity. Good god you're arrogant. I never cut a powerline, thanks. I did act as a professional aerial applicator before most enter college. It's ...

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by 747Whale
Fri Mar 29, 2019 3:06 am
Forum: Technical/Operations
Topic: Flying the Plane, versus systems management flying
Replies: 80
Views: 9074

Re: Flying the Plane, versus systems management flying

ECAMerror wrote:
747Whale wrote:
The notion that "civil pilots don't practice these things" is an example of military arrogance.


Well, do they?

Can you make a non-emotional argument?


I was doing formation flights under powerlines as a commercial pilot when I was eighteen. How about you?

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by 747Whale
Thu Mar 28, 2019 7:56 pm
Forum: Technical/Operations
Topic: Aircraft Brakes
Replies: 39
Views: 2389

Re: Aircraft Brakes

I bet you'll believe that IATA's advice to airline pilots. I get I'm being insulted, but I don't get why. Also, it's not helpful. No one believes I'm an expert in anything. I don't either. I'm not trying to school anyone. But I understood that the main cause of wear in carbon brakes (unlike steel b...

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by 747Whale
Thu Mar 28, 2019 7:27 pm
Forum: Technical/Operations
Topic: MAX certification: new systemic issues identified
Replies: 109
Views: 10893

Re: MAX certification: new systemic issues identified

Quite a lot, in case you. missed it. Including pilot training which has become better, more accurate, and more technologically advanced. Systems such as MCAS are there in the event the pilot does not do his or her job, but the pilot is there to prevent the high alpha condition in the first place. Wh...

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by 747Whale
Thu Mar 28, 2019 7:23 pm
Forum: Technical/Operations
Topic: Electric nose wheels
Replies: 49
Views: 2775

Re: Electric nose wheels

Where were all these aircraft that were "all the rage?" When did this rage occur?

These statements, made as if true, are not. Why make them, then?

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by 747Whale
Thu Mar 28, 2019 7:17 pm
Forum: Technical/Operations
Topic: Flying the Plane, versus systems management flying
Replies: 80
Views: 9074

Re: Flying the Plane, versus systems management flying

By and large, I've seen far more problems in the industry by with military pilots, and a great deal of it is attached to arrogance; often a sense that they know things they really don't. Much of it seems rooted in the sense that their limited experience (military) has shown them the world and that t...

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by 747Whale
Thu Mar 28, 2019 6:45 am
Forum: Technical/Operations
Topic: Aircraft Brakes
Replies: 39
Views: 2389

Re: Aircraft Brakes

Carbon brakes don't get as hot, ... Another issue is heat. Carbon brakes get hotter. I feel so confused Carbon brakes get hot, like any brake; they don't stay hot like steel brakes; they cool faster, and they don't absorb the heat energy to release it into the wheels nearly like steel does. Carbon ...

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by 747Whale
Wed Mar 27, 2019 5:36 pm
Forum: Technical/Operations
Topic: MAX certification: new systemic issues identified
Replies: 109
Views: 10893

Re: MAX certification: new systemic issues identified

I am also aware that some years ago full stall training was omitted from normal training in transport category aircraft because it was deemed too dangerous. As stall training is done in a simulator, then you're probably aware that simulator training isn't dangerous. You're also doubtless aware that...

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by 747Whale
Wed Mar 27, 2019 5:33 pm
Forum: Technical/Operations
Topic: Aircraft Brakes
Replies: 39
Views: 2389

Re: Aircraft Brakes

Carbon brakes don't get as hot, and dissipate heat faster and don't pass it on to the wheel assembly nearly as much as steel brakes. Carbon brakes become more effective as they heat up. There are no nosewheel brakes. Very bad idea. All brakes wear. Regardless of braking type, in large aircraft we do...

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by 747Whale
Wed Mar 27, 2019 5:30 pm
Forum: Technical/Operations
Topic: Electric nose wheels
Replies: 49
Views: 2775

Re: Electric nose wheels

All the rage? When was this time?

I seem to have missed that rage.

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by 747Whale
Wed Mar 27, 2019 5:29 pm
Forum: Technical/Operations
Topic: What can you do with a B.S. in Aviation/Aviation Management??
Replies: 18
Views: 2544

Re: What can you do with a B.S. in Aviation/Aviation Management??

Aviation degrees, generally speaking are about as worthless as they come, but good enough for checking a box to say you got a degree. Comparable with underwater basket weaving, except without the skill.

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by 747Whale
Wed Mar 27, 2019 3:29 pm
Forum: Technical/Operations
Topic: MAX certification: new systemic issues identified
Replies: 109
Views: 10893

Re: MAX certification: new systemic issues identified

In all it's 50 years of service, basically there are only two kinds of pilots that have ever actually stalled a 737 in flight. a) Boeing test pilots b) Airline pilots who left a big hole in the ground :tombstone: Bullshit. There have been numerous stalls in Boeing aircraft, in all boeing aircraft; ...

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by 747Whale
Wed Mar 27, 2019 3:21 pm
Forum: Technical/Operations
Topic: MAX nacelle, AOA, center of lift, and C/G
Replies: 193
Views: 13706

Re: MAX nacelle, AOA, center of lift, and C/G

We don't have MCAS because the airplane pitches up or down, we have MCAS because at one very small area of the flight envelope if the pilot is not pushing the nose over to recover from a stall MCAS helps him out. And by the way the pitch up/down differences between the NG and the MAX probably are n...

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by 747Whale
Tue Mar 26, 2019 11:10 am
Forum: Technical/Operations
Topic: MAX certification: new systemic issues identified
Replies: 109
Views: 10893

Re: MAX certification: new systemic issues identified

MCAS moves horizontal stab trim position.

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by 747Whale
Mon Mar 25, 2019 6:58 pm
Forum: Technical/Operations
Topic: No more LAX loop on departures
Replies: 24
Views: 6474

Re: No more LAX loop on departures

https://aeronav.faa.gov/d-tpp/1903/00237SEALBEACH.PDF


No, I mean exactly what I said. The SEALBEACH 8 departure accommodates departures from both eastbound, and westbound runways: 6, 7, 24, 25.
-->

timz wrote:
Westbound from LAX? Off of runways 6/7, you mean?

https://aeronav.faa.gov/d-tpp/1903/00237SEALBEACH.PDF


No, I mean exactly what I said. The SEALBEACH 8 departure accommodates departures from both eastbound, and westbound runways: 6, 7, 24, 25.

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by 747Whale
Mon Mar 25, 2019 6:55 pm
Forum: Technical/Operations
Topic: How does runway activity work?
Replies: 14
Views: 2811

Re: How does runway activity work?

Winds, inbound traffic flow, outbound traffic flow, ground traffic flow, performance necessities, timing between various aircraft arrivals and departures, minimum taxi routings to a gate, noise abatement, etc, are all reasons for runway assignments.

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by 747Whale
Mon Mar 25, 2019 6:51 pm
Forum: Technical/Operations
Topic: Flying the Plane, versus systems management flying
Replies: 80
Views: 9074

Re: Flying the Plane, versus systems management flying

I suspect that the noted 200 hours was reference to time in type, as opposed to total time? Makes a lot more sense when you look at it that way. I have number of friends who have flown contract for ET, and they give generally high marks to their operations. No, I believe the F/O in the Ethiopian ev...

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by 747Whale
Mon Mar 25, 2019 6:48 pm
Forum: Technical/Operations
Topic: How much time and money would longer landing gear have cost Boeing?
Replies: 10
Views: 1823

Re: How much time and money would longer landing gear have cost Boeing?

Moving engines is a lot more than just a gear issue; there are numerous other factors involved, from single-engine performance and control to weight and balance to structural considerations, airflow over the nacelle (and subsequently wing) at high angles of attack, etc. It's not nearly so simple as ...

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by 747Whale
Mon Mar 25, 2019 6:40 pm
Forum: Technical/Operations
Topic: MAX certification: new systemic issues identified
Replies: 109
Views: 10893

Re: MAX certification: new systemic issues identified

Is there another hazard/catastrophe around the corner? If the MCAS patch corrects a tendency to pitch up towards stall in high-speed flight then don't we have an unstable aircraft? Negative. All aircraft with underslung engines pitch up when applying power, and this is not instability. In fact, the...

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by 747Whale
Sun Mar 24, 2019 8:51 pm
Forum: Technical/Operations
Topic: When the automatic stabilizer had to be turned off, do pilots get the pitch back to normal fast enough?
Replies: 22
Views: 2401

Re: When the automatic stabilizer had to be turned off, do pilots get the pitch back to normal fast enough?

The related jackscrew in the back of the plane is for stability. No, it's not. It's what actuates the horizontal stabilizer, and provides pitch trim. But, when the trim amount is a lot you will also need more time to get it back by hand. So, in effect, when you view the plane and pilots as a whole ...

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by 747Whale
Sun Mar 24, 2019 8:38 pm
Forum: Technical/Operations
Topic: Metal rod through windshield
Replies: 5
Views: 1262

Re: Metal rod through windshield

Still can't see the pictures. The site requires membership.

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by 747Whale
Sat Mar 23, 2019 8:00 am
Forum: Technical/Operations
Topic: No more LAX loop on departures
Replies: 24
Views: 6474

Re: No more LAX loop on departures

The SEAL BEACH departure (SLI8.SLI) is still in effect. It's now the SEAL BEACH 8, as it's progressed from one number to the next as it's updated. The current version was effective January 25, 2019. It’s flown for both eastbound and westbound departures, and involves a turn or vectors to Seal Beach ...

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by 747Whale
Tue Mar 19, 2019 4:03 am
Forum: Technical/Operations
Topic: Post maitenance test flight
Replies: 17
Views: 2272

Re: Post maitenance test flight

There are certain dedicated maintenance test flights, but but most maintenance does not require a flight. Maintenance signoffs for the most part do not return aircraft to service; they approve aircraft for return to service, and pilots actually return the aircraft to service on the next flight. Open...

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by 747Whale
Tue Mar 19, 2019 3:55 am
Forum: Technical/Operations
Topic: MAX nacelle, AOA, center of lift, and C/G
Replies: 193
Views: 13706

Re: MAX nacelle, AOA, center of lift, and C/G

There’s also now reason to believe there were shortcuts in certification. That's not "reason to believe." That's an article in popular media. The cited article is misquotes, use out of context, and very misleading, as the original material does not state what the article imports. Some ten...

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by 747Whale
Mon Mar 18, 2019 6:37 am
Forum: Technical/Operations
Topic: MAX certification: new systemic issues identified
Replies: 109
Views: 10893

Re: MAX certification: new systemic issues identified

Why do you believe the crews had no knowledge of their speed? There's more than indicated airspeed available in the cockpit for that information, and in a complete loss of air data situation, the FMC/GPS/IRU derived data will give a groundspeed readout, which can also be used, and every cockpit crew...

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by 747Whale
Mon Mar 18, 2019 3:37 am
Forum: Technical/Operations
Topic: MAX certification: new systemic issues identified
Replies: 109
Views: 10893

Re: MAX certification: new systemic issues identified

It is very different in terms of aerodynamic effect. Not nearly so much as you seem to think. It's a very small stab change, actually. The pilot failure theory still has to account for the fact that the ET pilots had been trained on MCAS and cutoff procedure. No, they hadn't. They should have known...

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