Search found 283 matches

by Redbellyguppy
Sat Mar 02, 2024 9:18 pm
Forum: Technical/Operations
Topic: Why does the B77W have so much thrust?
Replies: 49
Views: 8752

Re: Why does the B77W have so much thrust?

You’d be surprised how much influence a little hill at LAX has to do with, and specifically, second segment climb performance on a v1 cut over that hill….

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by Redbellyguppy
Sat Dec 30, 2023 5:13 am
Forum: Technical/Operations
Topic: Does Singapore fly the A359ULR with full fuel from SIN to ERW/JFK?
Replies: 35
Views: 7218

Re: Does Singapore fly the A359ULR with full fuel from SIN to ERW/JFK?

In my career thus far of close to 20,000 hours 121 flying, I have filled the tanks up full exactly one time.

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by Redbellyguppy
Wed Dec 06, 2023 2:09 am
Forum: Technical/Operations
Topic: SAN ILS27 Now Possible?
Replies: 15
Views: 1421

Re: SAN ILS27 Now Possible?

Even if I were flying the LOC 27 I would be descending using vnav anyways. I don’t need a glideslipe for that and since they can’t get me the minimums I need, there’s no point in installing one.

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by Redbellyguppy
Tue Sep 26, 2023 11:19 pm
Forum: Technical/Operations
Topic: Loud noises and shaking after takeoff
Replies: 30
Views: 4728

Re: Loud noises and shaking after takeoff

Hello, I have flown several times but today I experienced something unusual for me after take-off with an A320 from Antalya to Düsseldorf (24F). Shortly after take-off ( https://www.flightradar24.com/data/flights/xq282#32284be4 either at about the 1st turn or 2nd turn (I can't remember)) the aircra...

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by Redbellyguppy
Tue Sep 26, 2023 11:17 pm
Forum: Technical/Operations
Topic: Loud noises and shaking after takeoff
Replies: 30
Views: 4728

Re: Loud noises and shaking after takeoff

Airplanes are funny in how isolated some of these sounds can be. If you're right over the gear, this is usually *really* loud. If you're only a couple rows forward or aft, you won't hear it at all. CRJ-200 main gear doors opening for landing sounds almost like a gunshot. I’ve seen more than one per...

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by Redbellyguppy
Fri Jul 28, 2023 9:19 pm
Forum: Technical/Operations
Topic: When planes lower their landing gear, why are they not allowed to turn freely?
Replies: 23
Views: 4690

Re: When planes lower their landing gear, why are they not allowed to turn freely?

On the 737, the mains are stopped from rotating during retraction by hydraulic system pressure. The nose wheels are stopped by friction against scrubbers. On extension, there is nothing stopping them from turning other than their own inertia.

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by Redbellyguppy
Mon May 29, 2023 5:41 am
Forum: Technical/Operations
Topic: Rating cold and dark time
Replies: 20
Views: 3496

Re: Rating cold and dark time

I can make a 737 not dark in about 30 seconds. I can make it not physically cold in another two minutes. I can make it ready to go somewhere in the time it takes to spin up the irs’es as long as my other pilot doesn’t find anything on walk around. But I’m rarely in such a hurry, of course.

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by Redbellyguppy
Tue Apr 04, 2023 7:57 pm
Forum: Technical/Operations
Topic: Landing on RWY 30 at IAD?? 4/1
Replies: 22
Views: 5320

Re: Landing on RWY 30 at IAD?? 4/1

Back when employee parking was south of the C/D terminal when it was windy we would grab our lunches and go watch the circling. It was good times. I saw a KAL 744 put it -on- the 30 numbers once. That was very interesting.

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by Redbellyguppy
Sat Mar 18, 2023 6:48 am
Forum: Technical/Operations
Topic: Number of sims in a major airline
Replies: 53
Views: 6526

Re: Number of sims in a major airline

I know of an airline that operates 24 full flight simulators to support a fleet of 771 737s.

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by Redbellyguppy
Tue Jan 17, 2023 12:34 am
Forum: Technical/Operations
Topic: 737 MAX and SNA noise restrictions
Replies: 9
Views: 3288

Re: 737 MAX and SNA noise restrictions

They didn’t. It’s about overall noise emissions blended over the entire day. But like I said before, if your company is using a “quieter” slot then you still do the cutback. Even in the max.

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by Redbellyguppy
Fri Jan 13, 2023 6:44 am
Forum: Technical/Operations
Topic: 737 MAX and SNA noise restrictions
Replies: 9
Views: 3288

Re: 737 MAX and SNA noise restrictions

Not all slots require the same noise emissions restrictions. Some are “louder” some are “quieter”. The airlines that still utilize the cutback procedure do so because they are using slots that are more strict about noise emissions.

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by Redbellyguppy
Mon Dec 12, 2022 8:12 am
Forum: Technical/Operations
Topic: Southwest 737-8Max Wing Top Details
Replies: 4
Views: 2303

Re: Southwest 737-8Max Wing Top Details

I’d like to see pics of the differences. The main marking is to outline an area allowed to have cold soaked fuel frost.

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by Redbellyguppy
Thu Sep 15, 2022 1:40 pm
Forum: Technical/Operations
Topic: Strobe & Beacon Light Question
Replies: 20
Views: 5057

Re: Strobe & Beacon Light Question

You know who prefers the LED long flash though? Despite how cool it looks? Pilots in line for takeoff at night. They aren’t nearly as blinding as the xenon strobes.

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by Redbellyguppy
Fri Aug 26, 2022 1:54 am
Forum: Technical/Operations
Topic: ERJ-145 vs CRJ-200
Replies: 47
Views: 10002

Re: ERJ-145 vs CRJ-200

I rather enjoyed the apu exhaust pointed down onto the ramp. I could store enough warm air from the jetway in my winter coat to get me to the tail portion of the preflight where that was located. Then, gloriously recharge in a plume of warm probably carcinogenic exhaust but it felt amazing in Fargo ...

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by Redbellyguppy
Sun May 01, 2022 5:48 am
Forum: Technical/Operations
Topic: Operating costs: 2x A321XLR vs 1 widebody
Replies: 40
Views: 12465

Re: Operating costs: 2x A321XLR vs 1 widebody

Remember, you have to buy the things, too. The cost of 2@321 Is less than 1@350/330neo

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by Redbellyguppy
Fri Apr 08, 2022 3:02 pm
Forum: Technical/Operations
Topic: Biz Jets: VNAV and Flight Level Change
Replies: 18
Views: 4162

Re: Biz Jets: VNAV and Flight Level Change

These comments are based on 737 vnav but other aircraft are similar. Much of the time, the vnav functions identically to level change. During periods of unrestricted climb, vnav speed is max climb thrust, speed bug as set by the fmc. Only to meet a restriction does it enter a path mode. Similarly in...

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by Redbellyguppy
Sun Mar 27, 2022 6:04 am
Forum: Technical/Operations
Topic: A320 pushes nose down in flare mode
Replies: 12
Views: 6153

Re: A320 pushes nose down in flare mode

To smoothly land my aircraft, a 737, you have to gently de-rotate to sort of skip the mains on as you touch down. The net effect is the same as you pull the side stick to counter the nose down trim application. It results in nice landings. Yes I’m typed in both the a320 and 737.

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by Redbellyguppy
Sun Mar 27, 2022 1:31 am
Forum: Technical/Operations
Topic: airplane gliding
Replies: 43
Views: 6571

Re: airplane gliding

If I’m descending into, say, Sacramento, on a flight from Seattle, from FL400 I’ll pull the thrust to idle over Redding, or thereabouts. If I do it properly and ATC has no traffic issues, I wouldn’t need to apply thrust until I’m at 1000 ft… and only that because of the drag from configuring. If I h...

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by Redbellyguppy
Fri Mar 25, 2022 4:14 am
Forum: Technical/Operations
Topic: Delta - payroll optimized luggage/overhead question
Replies: 7
Views: 16422

Re: Delta - payroll optimized luggage/overhead question

A bag in the overhead weighs nothing, since it is built into the weight of a passenger, but in the pit it counts as a bag and weighs somewhere around 30 pounds depending on what their average weight program weights are.

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by Redbellyguppy
Sat Feb 26, 2022 3:37 pm
Forum: Technical/Operations
Topic: Engines for the Hawaii Hopper Flights
Replies: 5
Views: 2846

Re: Engines for the Hawaii Hopper Flights

The 737s flying inter island can stay in Hawaii for at the most, ten days. They have to return to the mainland for service checks because their operator does not have actual company maintenance out in Hawaii and contract maintenance can’t do all the maintenance needed to keep those aircraft out ther...

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by Redbellyguppy
Wed Jan 26, 2022 5:06 pm
Forum: Technical/Operations
Topic: Pilot retracted flaps one notch just before landing
Replies: 19
Views: 5189

Re: Pilot retracted flaps one notch just before landing

I suppose it might depend on what you considered “just before touchdown”. In the 737 it could be possible that I planned for, loaded, briefed, flaps 30. Then because of an unexpected tailwind, atc, etc, I was high and/or fast. I could drop flaps 40 to have the drag to repair that. But since my numbe...

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by Redbellyguppy
Sun Dec 19, 2021 3:02 am
Forum: Technical/Operations
Topic: 737 MAX APU Inlet Door
Replies: 30
Views: 5753

Re: 737 MAX APU Inlet Door

The inlet design was taken from the 787 design. Airflow around the new tail one design.

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by Redbellyguppy
Sun Dec 19, 2021 2:59 am
Forum: Technical/Operations
Topic: 737 MAX APU Inlet Door
Replies: 30
Views: 5753

Re: 737 MAX APU Inlet Door

The in flight open position is only 17 degrees vs the 45 degrees you see on the ground when watching our planes from the terminal. Ordinarily the apu is used only in flight as directed by mel or Qrh. However, we also run it continuously on departure during etops flights, it is running as a third ele...

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by Redbellyguppy
Wed Dec 15, 2021 7:27 am
Forum: Technical/Operations
Topic: Can anyone identify the various noises on this video of a B737 horiz stab jackscrew in operation?
Replies: 3
Views: 1165

Re: Can anyone identify the various noises on this video of a B737 horiz stab jackscrew in operation?

I’m not sure what the groaning sound in the middle was but the final sound was created by the actuation of the jack screw past the limit of electrical trim, by the trim wheel being manually cranked to zero by someone in the cockpit.

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by Redbellyguppy
Mon Dec 13, 2021 4:47 pm
Forum: Technical/Operations
Topic: Turbofan Engine Shutdown Question
Replies: 12
Views: 3276

Re: Turbofan Engine Shutdown Question

The drag from a spinning prop is tantamount to having a disc of plywood out there that you’re pushing through the air. On a small aircraft the proportion of frontal area that said prop takes is much greater than the equivalent frontal area of a jet. The free spinning N1 also has a lot of drag, but p...

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by Redbellyguppy
Wed Dec 01, 2021 8:15 am
Forum: Technical/Operations
Topic: Why HAL3 went north before going back down to HNL?
Replies: 7
Views: 2334

Re: Why HAL3 went north before going back down to HNL?

You can fly lat long fixes to Hawaii. I’ve done it to go north of A track.

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by Redbellyguppy
Sun Nov 14, 2021 1:19 am
Forum: Technical/Operations
Topic: Why fuel driven actuators?
Replies: 14
Views: 2656

Re: Why fuel driven actuators?

I once flew an aircraft that had pneumatically actuated thrust reversers. There’s an infinite supply of air, too, in an engine that is running.

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by Redbellyguppy
Wed Oct 27, 2021 8:14 am
Forum: Technical/Operations
Topic: Is it dangerous when aircraft carry fuel in a center tank beneath the passenger cabin?
Replies: 43
Views: 5809

Re: Is it dangerous when aircraft carry fuel in a center tank beneath the passenger cabin?

You’re only going to get 17000 lb onto a 737 if you can’t use your center tanks, out of a potential capacity around 46,000 lb.

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by Redbellyguppy
Mon Oct 25, 2021 4:13 pm
Forum: Technical/Operations
Topic: Do Boeing 737 pilots use Flaps 1 or Flaps 10 very often?
Replies: 11
Views: 13866

Re: Do Boeing 737 pilots use Flaps 1 or Flaps 10 very often?

Only in the classic. The NG won’t honk at you flaps 10. I use it frequently when I want to descend at a decent rate but not use speed brakes.

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by Redbellyguppy
Mon Oct 25, 2021 3:57 pm
Forum: Technical/Operations
Topic: Do Boeing 737 pilots use Flaps 1 or Flaps 10 very often?
Replies: 11
Views: 13866

Re: Do Boeing 737 pilots use Flaps 1 or Flaps 10 very often?

Only in the classic. The NG won’t honk at you flaps 10. I use it frequently.

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by Redbellyguppy
Wed Oct 20, 2021 5:22 pm
Forum: Technical/Operations
Topic: Rationale for unusual SYD-YVR routing
Replies: 7
Views: 1898

Re: Rationale for unusual SYD-YVR routing

Fly to the wind to ride the wind.

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by Redbellyguppy
Sat Oct 02, 2021 5:50 am
Forum: Technical/Operations
Topic: Which airliners have ram air turbines. Which power hydraulics and which provide electricity?
Replies: 46
Views: 6772

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

737 has cables going to flight controls, actuated by a person. These people powered generators consume cheap coffee and garbage airport food. One of the greatest misconceptions in aviation. 737 has cables to the hydraulic fight flight control actuators, with manual reversion in some instances. Whil...

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by Redbellyguppy
Thu Sep 30, 2021 8:18 am
Forum: Technical/Operations
Topic: Which airliners have ram air turbines. Which power hydraulics and which provide electricity?
Replies: 46
Views: 6772

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

737 has cables going to flight controls, actuated by a person. These people powered generators consume cheap coffee and garbage airport food.

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by Redbellyguppy
Mon Sep 27, 2021 7:39 pm
Forum: Technical/Operations
Topic: Is it true that the American 191 and Air Florida 90 accidents could have been averted if the pilots had added power?
Replies: 16
Views: 3333

Re: Is it true that the American 151 and Air Florida 90 accidents could have been averted if the pilots had added power?

Air Florida had thrust to spare but what the DC10 really could have used was a few knots more airspeed. If they hadn’t been so dead nuts precisely pitching to V2 that wing wouldn’t have stalled.

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by Redbellyguppy
Sat Sep 11, 2021 9:33 pm
Forum: Technical/Operations
Topic: Question about 737 BBJ2.
Replies: 6
Views: 1661

Re: Question about 737 BBJ2.

What is the fuel capacity of this aircraft?

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by Redbellyguppy
Thu Sep 02, 2021 1:11 pm
Forum: Technical/Operations
Topic: OGG Runway strength - PCN/ACN
Replies: 3
Views: 1484

Re: OGG Runway strength - PCN/ACN

Hmm. I’ve been over 170 dual wheel. I’ll ask next time.

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by Redbellyguppy
Thu Sep 02, 2021 1:08 pm
Forum: Technical/Operations
Topic: N1 creeping up in climb 737NG
Replies: 9
Views: 3068

Re: N1 creeping up in climb 737NG

That’s how it works in real life.

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by Redbellyguppy
Fri Aug 20, 2021 4:03 pm
Forum: Technical/Operations
Topic: A320 Wingtip strobes
Replies: 19
Views: 3559

Re: A320 Wingtip strobes

If I choose to exercise courtesy about my strobe usage, it isn’t so much the wingtip strobes I’m being courteous about. It’s the tail strobe, which is right in the face at eye level of the crew behind us.

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by Redbellyguppy
Sat Aug 07, 2021 4:09 am
Forum: Technical/Operations
Topic: MPH student shifting into aviation
Replies: 11
Views: 1794

Re: MPH student shifting into aviation

Go take a demo flight. I doubt it’s too late for you if you have the heart for it.

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by Redbellyguppy
Thu Jul 29, 2021 5:01 pm
Forum: Technical/Operations
Topic: Welding in the main gear well ?
Replies: 11
Views: 2027

Re: Welding in the main gear well ?

Almost certainly a LED headlamp.

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by Redbellyguppy
Wed Jun 23, 2021 4:55 pm
Forum: Technical/Operations
Topic: Engine noise question
Replies: 22
Views: 4148

Re: Engine noise question

Sounds like you were overflown by an a220 or an a320 going to flaps 1

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by Redbellyguppy
Sat Jun 05, 2021 5:42 pm
Forum: Civil Aviation
Topic: Rare video of Anacostia river approach RWY 19 DCA
Replies: 23
Views: 7446

Re: Rare video of Anacostia river approach RWY 19 DCA

It would be hard to make stable approach requirements doing a late turn like that.

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by Redbellyguppy
Wed Jun 02, 2021 9:01 pm
Forum: Travel, Polls & Preferences
Topic: Is there a way to see how full Southwest's flights are?
Replies: 7
Views: 2133

Re: Is there a way to see how full Southwest's flights are?

Of course there is. If you work for southwest.

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by Redbellyguppy
Tue Jun 01, 2021 5:09 am
Forum: Technical/Operations
Topic: For Pilots: What Is Your Favorite Route/Flight Story?
Replies: 21
Views: 6425

Re: For Pilots: What Is Your Favorite Route/Flight Story?

I really like landing at kpwm. From the west you descend to fly over Portland head light house. You head out over the Casco bay, around Ft Gorges and down the mouth of Portland harbor. It becomes the Fore river and as it curves around it deposits you right on the extended centerline of runway 29. If...

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by Redbellyguppy
Tue May 25, 2021 3:26 am
Forum: Technical/Operations
Topic: How common is significant over fueling?
Replies: 15
Views: 3542

Re: How common is significant over fueling?

Rare. Usually it only occurs because of a late tail swap.

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by Redbellyguppy
Sun May 23, 2021 3:17 pm
Forum: Technical/Operations
Topic: Passenger Seat Belt Types 1960s/early 1970s
Replies: 3
Views: 1884

Re: Passenger Seat Belt Types 1960s/early 1970s

I’ve seen push to release on certain aircraft seatbelts that also had an airbag installed.

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