Search found 175 matches

by Lpbri
Wed Sep 18, 2019 4:50 pm
Forum: Civil Aviation
Topic: AA 767-300 diverts to CMH
Replies: 5
Views: 2841

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: 10
Views: 1667

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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by Lpbri
Mon Sep 02, 2019 3:36 pm
Forum: Civil Aviation
Topic: American Airlines MD-80 Retirement Discussion Thread
Replies: 648
Views: 115436

Re: American Airlines MD-80 Retirement Discussion Thread

Looks like 4xL will fly the last flight DFW-ORD flight, but that may change. #501 the only LAA remaining, will fly DSM-DFW on 9/3, then ferry to TUL, pick up guests, then to ROW for company function.

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by Lpbri
Sat Aug 10, 2019 5:23 pm
Forum: Technical/Operations
Topic: 787 Core Network (Somewhat) vulnerable
Replies: 6
Views: 2212

Re: 787 Core Network (Somewhat) vulnerable

To note, the "Core Network" is not the same as the "Common Core System". The Core Network is the onboard repository for airplane data and software apps. When the airplane parks at designated gates, the Core Network is updated via wifi. It does not install the software. There are ...

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by Lpbri
Thu Aug 08, 2019 6:58 pm
Forum: Technical/Operations
Topic: Hydraulic reservoir pressurization/ cavitation?
Replies: 22
Views: 2322

Re: Hydraulic reservoir pressurization/ cavitation?

A 787 hydraulic reservoir does not use pressurized air. An internal piston keeps a positive pressure (75 psi ) a the outlet of the reservoir.

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by Lpbri
Tue Aug 06, 2019 4:07 pm
Forum: Technical/Operations
Topic: Engine run up and taxi for mainteinance people
Replies: 2
Views: 1255

Re: Engine run up and taxi for mainteinance people

No license where I am. In order to checkout someone you have to be a designee. It can either be a training instructor or a qualified AMT, depending on weather it's an initial or a requal. This can and does change.

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by Lpbri
Sun Aug 04, 2019 2:51 am
Forum: Travel, Polls & Preferences
Topic: HNL-LON Nonstop?
Replies: 23
Views: 3798

Re: HNL-LON Nonstop?

Did BOAC serve HNL in the 70s? I saw an episode of Hawaii-five-0 with a BOAC 707 in the background at HNL.

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by Lpbri
Thu Aug 01, 2019 11:42 pm
Forum: Technical/Operations
Topic: Taxiways use at HNL
Replies: 2
Views: 1039

Re: Taxiways use at HNL

I've watched many freighters from the parking lot at the end of Lagoon drive. I've often wondered why, instead of following the same route passenger jets take to runway 8R, they taxi along runway 4R, take a reverse high speed, and taxi along runway 8R. That turn has to be tough on tires and pavement...

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by Lpbri
Thu Jul 25, 2019 5:03 pm
Forum: Technical/Operations
Topic: Bleed air stages?
Replies: 3
Views: 1121

Re: Bleed air stages?

For 3 spool engines such as the RR Trent, user bleed air comes from the 8th stage of the intermediate pressure compressor, and the 8th stage of the high pressure compressor. Bleed air for flow control comes from different stages of the IP and HP. Fan air is used to cool bleed air.

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by Lpbri
Fri Jul 19, 2019 2:44 pm
Forum: Technical/Operations
Topic: Usage ratio of MIL-PRF-23827 to MIL-PRF-81322 grease on A320
Replies: 8
Views: 1339

Re: Usage ratio of MIL-PRF-23827 to MIL-PRF-81322 grease on A320

The most common grease I know of is Mobil 28, it's red, and AeroShell 33, and its olive in color. Royco something is used for areas around carbon brakes. It's black. Airbus may use something different.

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by Lpbri
Thu Jul 18, 2019 11:18 pm
Forum: Technical/Operations
Topic: Recirc Fans/ engine start
Replies: 9
Views: 1849

Re: Recirc Fans/ engine start

Just checked my 787 training manual. Both upper and lower recirculating fans decrease fan speed during main engine start. On a pneumatic airplane, pneumatic loads are separate from electric loads

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by Lpbri
Fri Jul 12, 2019 2:10 pm
Forum: Technical/Operations
Topic: Retread Tires on Commercial Planes
Replies: 22
Views: 2276

Re: Retread Tires on Commercial Planes

Actually, brakes are the number one mtx expense, so I hear. Used tires get re-capped all the time, it's perfectly safe. The tire company determines if the tire can be re-capped. It's marked on the side. The max number of re-caps is 6 I believe. You can always tell if a new wheel off the rack has new...

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by Lpbri
Fri Jul 12, 2019 5:36 am
Forum: Technical/Operations
Topic: RAT Deployment and ETOPS
Replies: 28
Views: 2559

Re: RAT Deployment and ETOPS

787 RAT has its own hydraulic pump. 5000 psi @ 10 gpm.

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by Lpbri
Sat Jun 29, 2019 11:16 pm
Forum: Travel, Polls & Preferences
Topic: Longest 727 routes by type
Replies: 27
Views: 3511

Re: Longest 727 routes by type

NW flew a 727 flight from MKE to LAX

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by Lpbri
Sat Jun 22, 2019 8:07 pm
Forum: Civil Aviation
Topic: History of American's St. Louis Hub
Replies: 46
Views: 5212

Re: History of American's St. Louis Hub

On the equipment side, TWAs operation was folded into AA in 2003 IIRC. DC-9s, 717s, and 767-200s were not carried over, hence the downsizing. AA also parked its F-100s and legacy TWA MD-80s took up the slack. 727s were all parked before 2003. 767-300s were operated briefly, but were returned to less...

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by Lpbri
Sat Jun 08, 2019 2:46 pm
Forum: Technical/Operations
Topic: Physial design of control of 737 jackscrew
Replies: 16
Views: 2104

Re: Physial design of control of 737 jackscrew

I have a good schematic but I don't know how to post it

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by Lpbri
Thu Jun 06, 2019 5:56 pm
Forum: Technical/Operations
Topic: Bleed AIr Off the Low Pressure Compressor?
Replies: 17
Views: 3480

Re: Bleed AIr Off the Low Pressure Compressor?

Do away with engine bleed air entirely, like a 787. Bleed air is wasteful no matter what Airbus may say. All electric is the only way to go.

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by Lpbri
Tue May 21, 2019 2:49 pm
Forum: Technical/Operations
Topic: Why are the APU GEN & APU BLEED usually left on?
Replies: 11
Views: 2842

Re: Why are the APU GEN & APU BLEED usually left on?

An exception to this is on a 737. The APU generator power breakers are always off unless manually selected on. The switch is a momentary action switch. Every time the APU is started, the APBs must always be manually closed.

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by Lpbri
Mon May 13, 2019 1:22 pm
Forum: Civil Aviation
Topic: BER News and Discussion Thread
Replies: 327
Views: 47635

Re: Report: BER Oct 2020 opening on shaky grounds

I must be late for this, but what, in a nutshell is wrong with this facility again?

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by Lpbri
Sun Apr 14, 2019 2:33 am
Forum: Technical/Operations
Topic: De-rating a CFM56?
Replies: 14
Views: 3307

Re: De-rating a CFM56?

Zeke2517 wrote:
Can you describe this plug?

Its called a programing plug. It plugs into the EEC. Its chained to the engine case, so if the EEC is changed, the plug stays with the engine

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by Lpbri
Wed Mar 27, 2019 7:18 pm
Forum: Technical/Operations
Topic: Aircraft Brakes
Replies: 41
Views: 4181

Re: Aircraft Brakes

There are pros and cons of carbon brakes. The pros are lighter weight, longer life and better overall performance. The cons are higher costs, higher overhaul costs. Another issue is heat. Carbon brakes get hotter. Brake fans help, but they add complexity. A short turnaround on a hot day can be a pro...

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by Lpbri
Tue Mar 26, 2019 5:39 pm
Forum: Civil Aviation
Topic: Inner city airline terminals
Replies: 25
Views: 2721

Re: Inner city airline terminals

Is there still a mid town Manhattan airline terminal?

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by Lpbri
Fri Mar 22, 2019 2:58 pm
Forum: Civil Aviation
Topic: Northwest Airlines KMSP hub 747-400 destinations
Replies: 43
Views: 7443

Re: Northwest Airlines KMSP hub 747-400 destinations

My very first flight was MKE-MSP on a 747 in 1975 or 1976. Left MKE at about 9pm. Needless to say, it was not packed!

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by Lpbri
Thu Mar 21, 2019 6:19 pm
Forum: Civil Aviation
Topic: Northwest Airlines KMSP hub 747-400 destinations
Replies: 43
Views: 7443

Re: Northwest Airlines KMSP hub 747-400 destinations

I flew LAX-MSP on a 747-400 circa 4/1989

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by Lpbri
Tue Mar 19, 2019 6:01 pm
Forum: Civil Aviation
Topic: Amazon 737-800BCF spotted in China
Replies: 9
Views: 3443

Re: Amazon 737-800BCF spotted in China

I don't see a cargo door.

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by Lpbri
Sat Mar 16, 2019 8:57 pm
Forum: Civil Aviation
Topic: B737 MAX Production storage during grounding.
Replies: 37
Views: 6034

Where will Boeing park undelivered MAXs?

Boeing has previously found ingenious ways of storing 737s at Renton. If they run out of space at RNT, where else is there? BFI has some room. They just built a ramp on the west side of Marginal Way. What about PAE? Or other Boeing facilities such as Moses Lake or Palmdale? CHS?

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by Lpbri
Wed Mar 06, 2019 6:15 am
Forum: Civil Aviation
Topic: Does AA really have this many more mechanics
Replies: 4
Views: 1299

Re: Does AA really have this many more mechanics

The term "mechanic" is loosely defined, and can vary by airline. If we are talking about "aviation maintenance technician", the AA figure is way overinflated. Tha actual number is more like 9800. The UA and DL numbers also look high. I think theirs are in the 7000-8000 range. The...

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by Lpbri
Thu Feb 28, 2019 4:42 pm
Forum: Technical/Operations
Topic: Trent/CF6 Question
Replies: 10
Views: 1846

Re: Trent/CF6 Question

How jet engines make the sounds they do cannot be explained. Why does your voice sound the way it does?

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by Lpbri
Tue Feb 26, 2019 4:40 am
Forum: Technical/Operations
Topic: Jump seat - question
Replies: 28
Views: 2124

Re: Jump seat - question

I've heard crew members rave about passrider.com

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by Lpbri
Thu Feb 14, 2019 2:42 am
Forum: Non-Aviation
Topic: DL 14FEB19 profit sharing up to 10X more than other U.S. carriers!
Replies: 30
Views: 4384

Re: DL 14FEB19 profit sharing up to 10X more than other U.S. carriers!

AAs profit sharing is 1.4% for 2018, not 5%

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by Lpbri
Tue Feb 05, 2019 12:46 am
Forum: Civil Aviation
Topic: What is an elderly CRJ200 worth on the open market?
Replies: 37
Views: 8204

Re: What is an elderly CRJ200 worth on the open market?

I would think how much time is on the engines is probably the biggest factor.

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by Lpbri
Mon Jan 28, 2019 3:05 am
Forum: Technical/Operations
Topic: Can the 77L fly from CPT to HNL?
Replies: 21
Views: 3632

Re: Can the 77L fly from CPT to HNL?

Has anyone from SA ever been to Hawaii?

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by Lpbri
Thu Jan 24, 2019 3:10 pm
Forum: Civil Aviation
Topic: AA announces upbeat Q4 2018 earnings
Replies: 53
Views: 7904

Re: AA announces upbeat Q4 2018 earnings

Compare AAs profit sharing to other major airlines........

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by Lpbri
Thu Jan 17, 2019 4:54 am
Forum: Civil Aviation
Topic: WestJet delivery team readies for the 787
Replies: 15
Views: 3513

Re: WestJet delivery team readies for the 787

A lot of people for an acceptance team.

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by Lpbri
Fri Jan 04, 2019 11:03 pm
Forum: Civil Aviation
Topic: Southwest founder Herb Kelleher dies aged 87
Replies: 107
Views: 13882

Re: Southwest founder Herb Kelleher dies aged 87

Was Herb a heavy drinker?

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by Lpbri
Fri Jan 04, 2019 6:16 pm
Forum: Technical/Operations
Topic: CFM LEAP-1A vs PW1000G: Sensor Incorporation
Replies: 9
Views: 1620

Re: CFM LEAP-1A vs PW1000G: Sensor Incorporation

I can't speak for the LeapX or Pratt, but I do know the GENX. I count 3 pressure sensors, 3 temp sensors, 2 pairs of speed sensors plus EGT sensors and vibration sensors. Not much different from previous gen engines. There are also various external sensors for accessories like T/R's fuel oil etc. No...

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by Lpbri
Sat Dec 22, 2018 4:24 pm
Forum: Technical/Operations
Topic: AA A321S - metal box next to exit door
Replies: 6
Views: 1816

Re: AA A321S - metal box next to exit door

That's what is called a doghouse. Contains oxygen bottles and maybe other emergency equipment

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by Lpbri
Sun Dec 09, 2018 10:32 pm
Forum: Technical/Operations
Topic: where can i find engine data?
Replies: 3
Views: 652

Re: where can i find engine data?

I would contact a manufacturer directly.

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by Lpbri
Sun Dec 09, 2018 4:31 am
Forum: Technical/Operations
Topic: Passenger airliners cargo capacity
Replies: 6
Views: 1289

Re: Passenger airliners cargo capacity

If you look closely at an A380, there is not much fuselage outside of the wing box. There is a lot of taper aft, a lot of electronics forward, and baggage for 450+. Not much room left.

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by Lpbri
Mon Nov 26, 2018 1:34 am
Forum: Civil Aviation
Topic: United 98 LAX-MEL maintenance divert to NAN
Replies: 32
Views: 9311

Re: United 98 LAX-MEL maintenance divert to NAN

A field trip of AMTs from SFO or LAX will fly in, probably on a charter jet.

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by Lpbri
Mon Nov 26, 2018 1:18 am
Forum: Technical/Operations
Topic: When was vacuum toilet introduced and replaced the old-school chemical toilet on Jetliners?
Replies: 10
Views: 2087

Re: When was vacuum toilet introduced and replaced the old-school chemical toilet on Jetliners?

The 757 was introduced at the same time as the 767 but does not have vacuum lavs but has 2 different styles of conventional lavs

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by Lpbri
Fri Nov 23, 2018 5:05 am
Forum: Technical/Operations
Topic: 787 AC Ramp Operations
Replies: 13
Views: 2994

Re: 787 AC Ramp Operations

The Aft External Power receptacle is used for maintenance so that you can have full aircraft systems functionality without having to run the APU. With no operating APU, the aircraft will start just fine on the front 2 external power receptacles although you would not be able to do a simultaneous 2 ...

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by Lpbri
Wed Nov 21, 2018 3:00 pm
Forum: Technical/Operations
Topic: Air Cycle Machine ACM operation
Replies: 1
Views: 868

Re: Air Cycle Machine ACM operation

When already compressed air passes through the compressor, it is compressed further. The energy to drive that compressor is extracted at the expansion turbine.

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by Lpbri
Tue Nov 20, 2018 11:29 pm
Forum: Technical/Operations
Topic: Bae 146 Nickname
Replies: 15
Views: 2118

Re: Bae 146 Nickname

The joke about the BAe146 was: BAE- Bring Another Engine
In reference to its poor engine reliability.

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by Lpbri
Sat Nov 17, 2018 7:16 pm
Forum: Technical/Operations
Topic: 787 AC Ramp Operations
Replies: 13
Views: 2994

Re: 787 AC Ramp Operations

Not trying to nitpick, but the APU starter generators on a 787 are not referred to as VFSGs even though their output frequency is variable.

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by Lpbri
Fri Nov 16, 2018 1:54 pm
Forum: Civil Aviation
Topic: First Delta Airlines A330-900neo rolls out of final asssembly
Replies: 7
Views: 3686

Re: First Delta Airlines A330-900neo rolls out of final asssembly

It's missing its engines. Normally on rollout so the engines are installed. It's well known Rolls is having delivery issues, so it's delivery will be delayed. By quite a while.

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by Lpbri
Tue Nov 13, 2018 10:57 pm
Forum: Technical/Operations
Topic: Common IDG issue
Replies: 13
Views: 2242

Re: Common IDG issue

stratclub wrote:
What is great about the 787 is that it has no IDG's. What the 787 has are called VFSG's (Variable Frequency Starter Generators) which are not speed regulated so there is no reason for a CSD.

But they are almost as big and heavy and require the same servicing as an IDG.

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by Lpbri
Thu Nov 08, 2018 7:47 pm
Forum: Civil Aviation
Topic: AA MadDog rumor du jour:
Replies: 49
Views: 13826

Re: AA MadDog rumor du jour:

One thing going against the MD80 that has not been mentioned: NOISE. 8 used 319s have been aquired.

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by Lpbri
Wed Nov 07, 2018 8:00 pm
Forum: Civil Aviation
Topic: AA MadDog rumor du jour:
Replies: 49
Views: 13826

Re: AA MadDog rumor du jour:

I am guessing the last segment will be ORD-TUL-DFW, then DFW-ROW

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by Lpbri
Wed Nov 07, 2018 7:39 pm
Forum: Civil Aviation
Topic: AA MadDog rumor du jour:
Replies: 49
Views: 13826

Re: AA MadDog rumor du jour:

All MD-80s should be retired by then.

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