Search found 223 matches

by Lpbri
Sun Sep 13, 2020 1:36 am
Forum: Technical/Operations
Topic: Hazardous APU exhausts
Replies: 10
Views: 1718

Re: Hazardous APU exhausts

On an MD-80 it's above the right engine cowl. If you opened the right upper engine cowl with the APU running you will burn a hole in it.

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by Lpbri
Thu Aug 20, 2020 3:28 pm
Forum: Civil Aviation
Topic: UA Route Frequency to Hawaii, Pre-747
Replies: 62
Views: 7851

Re: UA Route Frequency to Hawaii, Pre-747

A lot of the old Hawaii Five-O episodes were treasure troves of video of HNL in the 70s. You could see the Diamondhead concourse under construction. The original Central concourse, the handstands where the rental car lot is now. The sounds of 707s and DC-8s.

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by Lpbri
Thu Aug 20, 2020 3:12 pm
Forum: Travel, Polls & Preferences
Topic: What Airports did Airlines train at in the Old Days?
Replies: 34
Views: 2324

Re: What Airports did Airlines train at in the Old Days?

What about TNT in south Florida? I'm sure that was used by EAL

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by Lpbri
Wed Aug 19, 2020 9:46 pm
Forum: Civil Aviation
Topic: UA Route Frequency to Hawaii, Pre-747
Replies: 62
Views: 7851

Re: UA Route Frequency to Hawaii, Pre-747

My 8/79 timetable shows that UA operated OAK, DEN, OAK, ONT, PDX, SAN, SJC. Those flights are not in boldface type, so they were operated with DC-8s. It also shows 4 daily ORD-HNL, all 747. One oddity, ORD-ITO one stop withe a DC-10, but ITO-ORD nonstop with a 747

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by Lpbri
Sun Aug 09, 2020 12:46 am
Forum: Technical/Operations
Topic: Why are spoilers on some aircraft and not others?
Replies: 9
Views: 2111

Re: Why are spoilers on some aircraft and not others?

F-100s did not have wing spoilers but had a tail speed brake. Lift dumpers were wing mounted but we're ground use only.

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by Lpbri
Sun Aug 02, 2020 4:49 pm
Forum: Technical/Operations
Topic: Multiple external power switches
Replies: 12
Views: 1317

Re: Multiple external power switches

For the 777, the primary external power connects to the P200 bus, which is the main right hand AC bus. Secondary power connects directly to the P300 bus, which is Auxililary/Standby power. Everything is connected by bus tie breakers controlled by ELMS ( electric load management system) There are 2 p...

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by Lpbri
Sat Jul 25, 2020 8:49 pm
Forum: Technical/Operations
Topic: 737 Electrical System Questions
Replies: 6
Views: 1220

Re: 737 Electrical System Questions

TR3 normally powers the battery bus. Having a diode prevents the battery bus from charging the battery and allows only the battery charger to charge the battery

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by Lpbri
Thu Jul 23, 2020 12:20 am
Forum: Civil Aviation
Topic: End of an era: Last Qantas 747 retired today
Replies: 119
Views: 21282

Re: End of an era: Last Qantas 747 retired today

Now there are no RR powered airplanes left in its active fleet.

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by Lpbri
Fri Jul 17, 2020 3:48 am
Forum: Technical/Operations
Topic: NW DC-10-40 vs DC-10-30
Replies: 64
Views: 7382

Re: NW DC-10-40 vs DC-10-30

I stand by my comments. GE is still in the business and PW is a sideshow

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by Lpbri
Tue Jul 14, 2020 3:38 pm
Forum: Technical/Operations
Topic: NW DC-10-40 vs DC-10-30
Replies: 64
Views: 7382

Re: NW DC-10-40 vs DC-10-30

Which shows how technically illiterate airline management is. The GE was the better engine.

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by Lpbri
Fri Jul 03, 2020 4:57 am
Forum: Technical/Operations
Topic: how to assess engine run certifying staff
Replies: 6
Views: 1180

Re: how to assess engine run certifying staff

One thing that trips most people is where to find the fuel load requirements for a high power run. Wind conditions are another. Where to find an airport diagram?. Ground handling checklist? Taxi speeds fail a lot of check outs.

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by Lpbri
Sun Mar 22, 2020 12:33 am
Forum: Technical/Operations
Topic: 787 systems
Replies: 5
Views: 1886

Re: 787 systems

On the ground, the CAC deflector door is deployed to protect the CACs from FOD and nose gear spray. The door retracts when the OAT is 95 F or higher. They deploy to the 50% position when the OAT is 95 F or higher and engine speed rises above 50% N2. They retract when both N2s go above 90%. Cabin O2 ...

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by Lpbri
Wed Mar 18, 2020 7:21 pm
Forum: Civil Aviation
Topic: Aviation sector unpaid leaves and layoffs thread
Replies: 202
Views: 33196

Re: Airlines unpaid leaves and layoffs thread

Force Majure changes a lot of things....

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by Lpbri
Sun Mar 15, 2020 4:18 am
Forum: Travel, Polls & Preferences
Topic: What former airports have you flown into?
Replies: 45
Views: 2155

Re: What former airports have you flown into?

No one has flown out of GSW?

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by Lpbri
Sat Mar 07, 2020 5:09 pm
Forum: Travel, Polls & Preferences
Topic: TWA departure/arrival board at ORD
Replies: 0
Views: 363

TWA departure/arrival board at ORD

Does anyone out there know what happened to the old TWA departure board the was at ORD up until the early 80s? Is it preserved somewhere? I believe it was called a Solari board and it hung on the western end of terminal 3 near the ticket counters. It cool to watch it flip, with separate columns for ...

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by Lpbri
Fri Feb 28, 2020 11:40 pm
Forum: Technical/Operations
Topic: Brakes for 787 - Safran or Goodrich?
Replies: 4
Views: 1025

Re: Brakes for 787 - Safran or Goodrich?

If you are a French Airline, then you choose Safaran

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by Lpbri
Fri Feb 21, 2020 1:42 pm
Forum: Technical/Operations
Topic: What are advantages/ disadvantages of A330-200 versus B787-8?
Replies: 22
Views: 4792

Re: What are advantages/ disadvantages of A330-200 versus B787-8?

I think the best case for choosing the A330 is if you already have them in your fleet.

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by Lpbri
Wed Feb 19, 2020 4:19 pm
Forum: Technical/Operations
Topic: NACA Airfoils
Replies: 2
Views: 838

Re: NACA Airfoils

Try the Abbott and Von Doenhoff book

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by Lpbri
Tue Feb 18, 2020 5:08 pm
Forum: Travel, Polls & Preferences
Topic: Ex US Air 757-200s
Replies: 17
Views: 2696

Re: Ex US Air 757-200s

The aircraft known as "Christine" is long gone....

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by Lpbri
Mon Feb 10, 2020 5:31 pm
Forum: Technical/Operations
Topic: wingspan - fuselage width- induced drag
Replies: 2
Views: 671

Re: wingspan - fuselage width- induced drag

The induced drag coefficient varies inversely with wing aspect ratio. And it varies with the square of lift coefficient. Although the fuselage does produce some lift, how it affects total induced drag sounds pretty complex to me.

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by Lpbri
Sun Feb 02, 2020 7:14 pm
Forum: Technical/Operations
Topic: Squib circuit on overhead emergency exit of B757-200/300
Replies: 9
Views: 1273

Re: Squib circuit on overhead emergency exit of B757-200/300

For a 757 with offwing escape slides, the autofire switches are above the sill of each over wing hatch. When the hatch is opened, the switch sends a signal to fire the bottle squibs. Bottle pressure opens the slide door, rotates the carrier, and inflates the slide. The squibs are tested on the maint...

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by Lpbri
Sun Jan 26, 2020 6:16 am
Forum: Civil Aviation
Topic: Q4 Earnings Comparison - DL UA AA
Replies: 18
Views: 4978

Re: Q4 Earnings Comparison - DL UA AA

It blows me away how DAL can post these profits with their sky high labor costs and bottom of the cellar productivity.

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by Lpbri
Sat Jan 11, 2020 8:06 pm
Forum: Civil Aviation
Topic: United seasonal MKE-SFO
Replies: 21
Views: 4005

Re: United seasonal MKE-SFO

UA operated this route in the 70s

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by Lpbri
Fri Jan 10, 2020 8:35 pm
Forum: Technical/Operations
Topic: Safety stand for wheel change?
Replies: 17
Views: 1664

Re: Safety stand for wheel change?

Just to nitpick further, it looks like they used the torque wrench to loosen the axle nut instead of a breaker bar. The Feds have tagged people for this by watching from the terminal.

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by Lpbri
Fri Jan 10, 2020 5:16 am
Forum: Technical/Operations
Topic: Safety stand for wheel change?
Replies: 17
Views: 1664

Re: Safety stand for wheel change?

There doesn't appear to be a thread protector on the r/h axle

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by Lpbri
Fri Jan 10, 2020 5:10 am
Forum: Technical/Operations
Topic: Safety stand for wheel change?
Replies: 17
Views: 1664

Re: Safety stand for wheel change?

I don't see a streamer for the nose gear down knock pin.

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by Lpbri
Fri Jan 03, 2020 1:52 am
Forum: Technical/Operations
Topic: Oxygen masks accidentally deployed by pilot - folding question
Replies: 30
Views: 3656

Re: Oxygen masks accidentally deployed by pilot - folding question

The therapeutic oxygen system must be a customer option. Never heard of it.

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by Lpbri
Fri Jan 03, 2020 12:53 am
Forum: Technical/Operations
Topic: Extra pay for pilots and flight attendants that work the holidays?
Replies: 19
Views: 1770

Re: Extra pay for pilots and flight attendants that work the holidays?

At some airlines, airport workers (yes, they are part of the airline too) get straight time plus time and a half if they work. If the holiday falls on your day off, your next work day is your holiday. Some people may be granted the holiday off, but they forego the time and a half pay. Paid holidays ...

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by Lpbri
Sun Dec 22, 2019 5:02 pm
Forum: Technical/Operations
Topic: Airplane Servers
Replies: 5
Views: 1395

Re: Airplane Servers

777s have what are called AIMS, for Airplane Information Management System. These are 2 independent racks or cabinets the perform calculations for various airplane systems. Each cabinet has what are called Core Processor Modules that do all the computing. Input/output modules perform data conversion...

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by Lpbri
Wed Dec 11, 2019 6:00 am
Forum: Technical/Operations
Topic: How much power is needed for pressurization?
Replies: 40
Views: 3279

Re: How much power is needed for pressurization?

Using only the APU

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by Lpbri
Wed Dec 11, 2019 5:59 am
Forum: Technical/Operations
Topic: How much power is needed for pressurization?
Replies: 40
Views: 3279

Re: How much power is needed for pressurization?

I checked the change in fuel flow on a 787 by turning off the packs. The fuel flow decreased by 100pph.

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by Lpbri
Mon Dec 02, 2019 11:28 pm
Forum: Technical/Operations
Topic: Does WN start engines faster?
Replies: 15
Views: 3075

Re: Does WN start engines faster?

I have found that from a ground perspective and a cockpit perspective, it's best to wait until the tow bar is disconnected before starting engines For the push crew, it's best to communicate with the flight deck and other ground crew without the racket of the engines running. For the flight crew, it...

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by Lpbri
Wed Nov 27, 2019 3:04 pm
Forum: Technical/Operations
Topic: Does WN start engines faster?
Replies: 15
Views: 3075

Re: Does WN start engines faster?

It's all up to the push crew. The engines can be started when clearance is given by the ground crew.

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by Lpbri
Thu Nov 21, 2019 10:57 pm
Forum: Technical/Operations
Topic: Is an aircraft weighing possible outdoors ?
Replies: 49
Views: 2340

Re: Is an aircraft weighing possible outdoors ?

Just pulled up a work card for weighing procedures on a 777-200. The first steps involve de fueling the airplane, completely draining the sumps, draining the potable water and servicing the waste tanks. These steps can and should be performed outdoors. The next step calls for " position the air...

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by Lpbri
Fri Nov 15, 2019 3:56 am
Forum: Civil Aviation
Topic: Emirates President slams other airlines and Airbus for mishandling and retiring A380
Replies: 294
Views: 43368

Re: Emirates CEO slams other airlines and Airbus for mishandling and retiring A380

Another A380 issue is cargo. Or lack of it. It can't carry any. After you fill it up with bags for 500+ people, there isn't much left for cargo. Too short and stubby.

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by Lpbri
Mon Nov 11, 2019 7:29 pm
Forum: Technical/Operations
Topic: 787 electrical architecture efficiency vs traditional systems
Replies: 29
Views: 2945

Re: 787 electrical architecture efficiency vs traditional systems

Probably the main reason why CACs get replaced more often than they should is airlines don't know how to handle their airplanes on the ground. They leave them fully powered up with packs on for hours/days at a time. If they used GSE smarter, they would get a lot more life out of them. The brakes the...

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by Lpbri
Wed Nov 06, 2019 3:47 pm
Forum: Civil Aviation
Topic: Boeing whistleblower raises doubts over 787 oxygen system
Replies: 42
Views: 10650

Re: Boeing whistleblower raises doubts over 787 oxygen system

Chemical O2 generators are not used because the heat could damage the composite structure

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by Lpbri
Sat Nov 02, 2019 7:40 pm
Forum: Civil Aviation
Topic: Why is AA at ORD so RJ heavy?
Replies: 70
Views: 12476

Re: Why is AA at ORD so RJ heavy?

Remember back in the 80s when UA had 400+ departures a day? A lot of them DC 10s

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by Lpbri
Wed Oct 30, 2019 4:35 pm
Forum: Civil Aviation
Topic: AA Leadership Recognizes Widening Gap Between Itself, Delta - article
Replies: 232
Views: 38434

Re: AA Leadership Recognizes Widening Gap Between Itself, Delta - article

Must be the weekly AA bashing thread. At least this time there's an article with comments. I guess it's good they know there's a problem. My outsider top-4 list (not including a temporary placebo effect of leadership change, a la UA): 1) Improve the operations - this is the clear number one. Withou...

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by Lpbri
Sun Oct 20, 2019 3:03 pm
Forum: Civil Aviation
Topic: Jumpseat Wars?
Replies: 32
Views: 9821

Re: Jumpseat Wars?

Commuting by air does not sound like reliable transportation

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by Lpbri
Sat Oct 19, 2019 10:11 pm
Forum: Civil Aviation
Topic: Jumpseat Wars?
Replies: 32
Views: 9821

Re: Jumpseat Wars?

I've read about this. It's very complicated.

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by Lpbri
Sat Oct 19, 2019 5:35 pm
Forum: Civil Aviation
Topic: Spirit to build new $250m headquarters in Dania Beach, FL
Replies: 27
Views: 8616

Re: Spirit to build new $250m headquarters in Dania Beach, FL

Now is the time for JetBlue to move to Florida as well

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by Lpbri
Sat Oct 12, 2019 3:25 am
Forum: Technical/Operations
Topic: Engine run up and taxi for mainteinance people
Replies: 14
Views: 10946

Re: Engine run up and taxi for mainteinance people

I can vouch for twincommander. We have some fleets that have CBT training followed by checkout. For later fleets, classroom training followed by checkout. Either way, a PITA, and these MGMT people complain whenever no qualified people are availble

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by Lpbri
Fri Oct 11, 2019 2:32 pm
Forum: Technical/Operations
Topic: P126 Panel 747 Classic
Replies: 11
Views: 7804

Re: P126 Panel 747 Classic

Usually a circuit breaker panel is separate because the power it controls is different. AC breakers may be on a different panel than DC. Or it may be a separate stand alone bus.

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by Lpbri
Sun Oct 06, 2019 12:34 am
Forum: Civil Aviation
Topic: Are AA's 767-300 staying longer in the fleet?
Replies: 36
Views: 8227

Re: Are AA's 767-300 staying longer in the fleet?

Those last AA 767s are a hot commodity. They are relatively young frames. Some are now less than 15 years old.

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by Lpbri
Sat Oct 05, 2019 5:52 pm
Forum: Civil Aviation
Topic: Are AA's 767-300 staying longer in the fleet?
Replies: 36
Views: 8227

Re: Are AA's 767-300 staying longer in the fleet?

There will be. 787s still have seat back TV

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by Lpbri
Wed Oct 02, 2019 8:38 pm
Forum: Technical/Operations
Topic: Lycoming IO-720, Why not more popular?
Replies: 9
Views: 4099

Re: Lycoming IO-720, Why not more popular?

Early Twin Bonanzas had them.

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by Lpbri
Thu Sep 26, 2019 2:44 pm
Forum: Technical/Operations
Topic: external cooling for brakes on landing
Replies: 28
Views: 9343

Re: external cooling for brakes on landing

PCA hose works best

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by Lpbri
Wed Sep 18, 2019 4:50 pm
Forum: Civil Aviation
Topic: AA 767-300 diverts to CMH
Replies: 5
Views: 3186

Re: AA 767-300 diverts to CMH

"L OIL FILTER" EICAS . Left engine shut down. AC # 349

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by Lpbri
Sat Sep 14, 2019 9:47 pm
Forum: Technical/Operations
Topic: IDG maintenance service package
Replies: 19
Views: 10844

Re: IDG maintenance service package

On newer airplanes such as 777 or 787, the electrical page displays "Normal" or "service" for oil level, be it an IDG, BUG, or VFSG. On ETOPs and lower level checks, this is how oil levels are checked. Higher level level checks may call for you to check the sight glass, and servi...

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