Search found 253 matches

by atlamt
Sat Jun 06, 2020 1:19 pm
Forum: Technical/Operations
Topic: L1011, so many versions ?
Replies: 13
Views: 2470

Re: L1011, so many versions ?

The -1 is the original design. I’m going off memory so I hope I still remember this stuff. -100 was an increased gross weight model. -200 had more powerful engines -250 had more “upgrades” I can’t remember specifics. -500 was a shorter fuselage long range model. Those were all factory built variants...

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by atlamt
Thu May 07, 2020 4:58 pm
Forum: Technical/Operations
Topic: A350 Flight Deck Printer?
Replies: 19
Views: 3637

Re: A350 Flight Deck Printer?

The blank panel you are referring to is the printer. The top is a smooth blank plate except for the four buttons that control it. There is a seam on the top between the fixed portion where the buttons are and the movable section which opens to load paper. That seam is also where the printed paper ex...

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by atlamt
Tue Mar 12, 2019 12:46 pm
Forum: Technical/Operations
Topic: Question about stab trim systems
Replies: 12
Views: 2315

Re: Question about stab trim systems

dtwpilot225 wrote:
So like c and d checks then?


It's more like every few months vs C and D checks which are years apart. After the Alaska crash the time between inspections/lubrication on T-Tails was reduced.

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by atlamt
Sun Jan 13, 2019 1:10 pm
Forum: Technical/Operations
Topic: Multi-engine type fleet of same aircraft
Replies: 38
Views: 5376

Re: Multi-engine type fleet of same aircraft

In DL's case most of the 767 fleet was purchased new. So why the mixed engine types? With out knowing the financial details we can only guess. The newer build engines from another manufacturer could have achieved performance gains over the original fleet. The acquisition cost could have been better...

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by atlamt
Sat Jul 14, 2018 1:01 am
Forum: Technical/Operations
Topic: A330 Nose Landing Gear
Replies: 4
Views: 1230

Re: A330 Nose Landing Gear

Wheel stop bar. Designed to keep the wheels in the center line position and the strut extended in case the strut is leaking when the gear is up.

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by atlamt
Mon Jan 15, 2018 4:15 pm
Forum: Technical/Operations
Topic: 737 nose creases
Replies: 5
Views: 1608

Re: 737 nose creases

Without a picture it's just a guess but you are probably talking about the lightening diverter strips. The strips give the lightening a path to travel through and limit any damage to the composite radome.

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by atlamt
Wed Dec 27, 2017 2:26 am
Forum: Civil Aviation
Topic: DL 744 Sports Charters thru 02Jan18
Replies: 124
Views: 14466

Re: DL 8905 -744 UGA football charter to LAX

litz wrote:
Or perhaps not ... apparently there are none scheduled past Jan 2nd.


They are set to go to the boneyard on Jan 3rd

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by atlamt
Wed Dec 27, 2017 12:54 am
Forum: Technical/Operations
Topic: Emergency lights switch 737 800
Replies: 4
Views: 948

Re: Emergency lights switch 737 800

To place the switch in either the Off or Armed position the guard must be lifted to the open position. Closing the guard will return the switch to the center Armed position. This happens either by the guard itself pushing the switch down to center or a lever internal to the guard that will pull the ...

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by atlamt
Sun Jan 29, 2017 10:08 am
Forum: Technical/Operations
Topic: Swiss HB-IJS Wing Damage
Replies: 1
Views: 750

Re: Swiss HB-IJS Wing Damage

It appears to just be fairing damage. Secondary structure for aerodynamics. Besides it was only out of service for 24 hours. If there was any structural damage it would have been out of service much longer.

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by atlamt
Wed Jan 27, 2016 9:36 pm
Forum: Technical/Operations
Topic: KLM 737-400 Why 3 Lav Service Ports?
Replies: 8
Views: 2890

RE: KLM 737-400 Why 3 Lav Service Ports?

<table border="0" align="CENTER" width="95%" class="quote"><tr><td><font size="2" face="ARIAL, Helvetica, Geneva" color="#9A9DA0">Quoting <a href="/profile/77west" class="quote" target="_blank">77west</a> (<a href="#7" class="quote">Reply 7</a>):<br/><i>So I assume the 737NG has vacuum lav then? </i...

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by atlamt
Mon Jan 18, 2016 1:47 pm
Forum: Technical/Operations
Topic: Radio Altimeter Indication On Ground
Replies: 11
Views: 7788

RE: Radio Altimeter Indication On Ground

The 737NG's read -4 at the gate. At touchdown with the nose pitched up it reads 0. As the plane rotates back to a ground attitude and the gear compresses you see the negative altitude.

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by atlamt
Mon Oct 12, 2015 11:55 am
Forum: Technical/Operations
Topic: Cabin Wear And Durability
Replies: 9
Views: 3261

RE: Cabin Wear And Durability

Overhead bin doors are always being broken when a pax try's to force a door closed over a bag that doesn't fit. Usually it is the inserts that hold the hinge on being pulled out of the panel. Sometimes the entire panel fails. Tray tables and arm rests are broken all the time. I cringe when I see som...

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by atlamt
Wed Sep 30, 2015 9:10 pm
Forum: Technical/Operations
Topic: 767 Inlet Identification?
Replies: 6
Views: 3685

RE: 767 Inlet Identification?

It's a membrane based system. The pressurized air is forced through the membrane separating the nitrogen. It's not pure nitrogen but it is more than enough to reduce the overall percentage of oxygen in the tank and therefore the risk of ignition.

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by atlamt
Fri Jun 05, 2015 8:22 pm
Forum: Technical/Operations
Topic: Air-conditioning System And Cabin Pressurisation
Replies: 23
Views: 6798

RE: Air-conditioning System And Cabin Pressurisation

As said already the pack use an ACM to produce cold air. The air coming out is just above freezing. Hot bleed air is then introduced to warm the air to the desired temperature. Larger a/c have multiple zones of heating an cooling. The air from the packs is added to a mix manifold where hot air is ad...

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by atlamt
Mon Dec 22, 2014 5:47 am
Forum: Technical/Operations
Topic: Protrusion On Recent 757's
Replies: 2
Views: 4146

RE: Protrusion On Recent 757's

It is an air to ground antenna for the gogo wifi system. They were added as part of the mod to increase bandwidth.

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by atlamt
Tue Nov 05, 2013 6:21 pm
Forum: Civil Aviation
Topic: ATL Construction
Replies: 36
Views: 4447

ATL Construction

Yes part of the pad is gone. I'm not 100% but I remember hearing they were building a deicing pad.

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by atlamt
Tue Jul 16, 2013 10:31 pm
Forum: Technical/Operations
Topic: US Airways 319 N767UW Question
Replies: 6
Views: 5319

RE: US Airways 319 N767UW Question

Air to ground wifi antennas. We have them at DL to. They have been adding the sidemount antennas as part of the upgrades to increase bandwidth.

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by atlamt
Mon Jul 01, 2013 1:28 am
Forum: Technical/Operations
Topic: Black Tar Substance Over Inside Of Cowl
Replies: 15
Views: 4854

Black Tar Substance Over Inside Of Cowl

I think the cleaner you are thinking of is call skykleen.

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by atlamt
Wed Apr 17, 2013 12:54 pm
Forum: Technical/Operations
Topic: Access Panel Shape On The TE Flap Fairing - B752
Replies: 7
Views: 5046

RE: Access Panel Shape On The TE Flap Fairing - B752

Mel, I took a closer look at one of our 757's last night. That access cover falls in the middle of a seam on the canoe fairing. There is an internal doubler and the fasteners in that doubler follow the perimeter of the cover. My guess would be it's a trade off for strength. The small round area in t...

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by atlamt
Sat Dec 15, 2012 2:51 am
Forum: Technical/Operations
Topic: DL MD90- Fleet Reliability?
Replies: 32
Views: 9691

RE: DL MD90- Fleet Reliability?

In general the MD90 fleet is pretty reliable. I can't think of any issues that are only present in a particular subfleet from one previous operator.

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by atlamt
Tue Nov 06, 2012 11:31 pm
Forum: Technical/Operations
Topic: Virgin 747 Unusual Marking
Replies: 12
Views: 3955

RE: Virgin 747 Unusual Marking

<table border="0" align="CENTER" width="95%" class="quote"><tr><td><font size="2" face="ARIAL, Helvetica, Geneva" color="#9A9DA0">Quoting <a href="/profile/by738" class="quote" target="_blank">by738</a> (<a href="#4" class="quote">Reply 4</a>):<br/><i>isnt it the little name "Ladybird" painted on in...

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by atlamt
Thu Sep 20, 2012 10:13 am
Forum: Technical/Operations
Topic: MD82 Yellow Triangles On Wing
Replies: 11
Views: 7216

RE: MD82 Yellow Triangles On Wing

<table border="0" align="CENTER" width="95%" class="quote"><tr><td><font size="2" face="ARIAL, Helvetica, Geneva" color="#9A9DA0">Quoting <a href="/profile/HAWK21M" class="quote" target="_blank">HAWK21M</a> (<a href="#6" class="quote">Reply 6</a>):<br/><i>What is the <acronym title="Melbourne - Tull...

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by atlamt
Thu Sep 20, 2012 10:01 am
Forum: Technical/Operations
Topic: How To Get EASA-66 For FAA A&Ps?
Replies: 3
Views: 6884

RE: How To Get EASA-66 For FAA A&Ps?

Not that I know of. Good luck, it's a lot of work. The EASA system is much different. More training hours More license categories, Aircraft-specific training and certification and Recurrent training. I personally like the EASA system. I feel it is designed to ensure the people working on aircraft ha...

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by atlamt
Fri Aug 24, 2012 2:31 pm
Forum: Technical/Operations
Topic: Why The Dip On Runway 8R/26L @ ATL
Replies: 16
Views: 8062

RE: Why The Dip On Runway 8R/26L @ ATL

It's mostly due to the original slope of the land. There is a downward slope to the east. Also the airport was built over the Flint river which now runs under the field. It's source is just to the north. I'm sure it affected how the land was sloped. The east end of all the runways and taxiways was b...

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by atlamt
Fri Jul 06, 2012 11:01 am
Forum: Technical/Operations
Topic: Are All MD-80 Series Still Flying W Jackscrew Issue?
Replies: 29
Views: 22638

RE: Are All MD-80 Series Still Flying W Jackscrew Issue?

<table border="0" align="CENTER" width="95%" class="quote"><tr><td><font size="2" face="ARIAL, Helvetica, Geneva" color="#9A9DA0">Quoting <a href="/profile/Starlionblue" class="quote" target="_blank">Starlionblue</a> (<a href="#6" class="quote">Reply 6</a>):<br/><i> I don't think the DC-9/Mad Dog is...

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by atlamt
Sat Jun 16, 2012 7:12 pm
Forum: Technical/Operations
Topic: Delta Pilot Scheduling
Replies: 26
Views: 10758

RE: Delta Pilot Scheduling

At DL the MD88 and MD90's are flown by the same crews. So one crew could bring an 88 in and fly out on a 90 the next day.

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by atlamt
Wed Jun 06, 2012 4:17 pm
Forum: Technical/Operations
Topic: 777 Thrust Reference
Replies: 6
Views: 13559

RE: 777 Thrust Reference

It is the takeoff power setting. In this case N1 speed 99.9%. Based on the takeoff weight, temperature, etc...

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by atlamt
Tue Apr 24, 2012 8:23 pm
Forum: Technical/Operations
Topic: Aircraft Names Or Reg?
Replies: 18
Views: 3264

RE: Aircraft Names Or Reg?

At DL we use the tail number.

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by atlamt
Fri Feb 17, 2012 4:51 pm
Forum: Technical/Operations
Topic: Manufacturer Of DL MD-88/MD-90 Bin Extensions?
Replies: 5
Views: 4979

RE: Manufacturer Of DL MD-88/MD-90 Bin Extensions?

<table border="0" align="CENTER" width="95%" class="quote"><tr><td><font size="2" face="ARIAL, Helvetica, Geneva" color="#9A9DA0">Quoting <a href="/profile/Sinlock" class="quote" target="_blank">Sinlock</a> (<a href="#2" class="quote">Reply 2</a>):<br/><i>It's safe to say that every ramp worker who'...

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by atlamt
Wed Jan 04, 2012 8:11 pm
Forum: Technical/Operations
Topic: Aircraft Time Question
Replies: 3
Views: 2957

RE: Aircraft Time Question

On some aircraft when the boarding door is closed and the anti collision beacon is turned on an acars message is sent showing the a/c out.

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by atlamt
Sat Aug 20, 2011 10:20 am
Forum: Technical/Operations
Topic: Engaging Spoiler On Boeing 777
Replies: 5
Views: 8600

RE: Engaging Spoiler On Boeing 777

From what i saw in the video the flight spoilers were deployed for part of the decent. Once the flaps were deployed they created enough drag and the flight spoilers weren't needed anymore. The small movement of the flight spoilers you see through the rest of the approach is tied to the movement of t...

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by atlamt
Thu Oct 14, 2010 12:14 pm
Forum: Technical/Operations
Topic: Where Do Commercial Airliners Do Their Run Up?
Replies: 30
Views: 12610

RE: Where Do Commercial Airliners Do Their Run Up?

If i had to guess. I'd say they were doing a cross bleed start.

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by atlamt
Fri Oct 01, 2010 12:29 pm
Forum: Technical/Operations
Topic: Altimeters And Rotation
Replies: 16
Views: 4613

RE: Altimeters And Rotation

I don't recall seeing it on other a/c. But on the 737-800 the radio altimeter show's -4 feet when the a/c is on the ground. It was explained to us in class that in the landing flare the <acronym title="Royal Nepal Airlines">RA</acronym> antenna is approx 4 feet higher and will read 0 when the mains ...

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by atlamt
Mon Sep 13, 2010 6:53 pm
Forum: Technical/Operations
Topic: Light In The Landing Gear Bay
Replies: 16
Views: 8607

RE: Light In The Landing Gear Bay

It is a warning light to stay clear of the landing gear doors. Any time the gear doors are opening/closing or if the gear is in transit the light will be on. It's meant to warn people working in the area on the ground but the system still works in the air.

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by atlamt
Mon Sep 13, 2010 6:47 pm
Forum: Technical/Operations
Topic: APU On MD-80 Series
Replies: 6
Views: 7425

RE: APU On MD-80 Series

To answer the original question. The apu is mounted in the belly just behind the aft pressure bulkhead. The inlet is also on the belly which makes it very prone to ingesting any leaking hydraulic fluid leading to smoke in the cabin.

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by atlamt
Wed Aug 11, 2010 9:28 am
Forum: Technical/Operations
Topic: Looks Like A Pitot Tube?
Replies: 10
Views: 4552

RE: Looks Like A Pitot Tube?

Looks like an AOA (angle of attack) sensor to me

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by atlamt
Mon Dec 28, 2009 8:05 am
Forum: Technical/Operations
Topic: What Is N1 /N2 / N3?
Replies: 4
Views: 9055

RE: What Is N1 /N2 / N3?

N1 <acronym title="Aerolineas Internacionales SA de CV (Mexico)">N2</acronym> and N3 are indications in percentage of the rated speed of a given engine section. N1 is fan speed. (the big one in the front) <acronym title="Aerolineas Internacionales SA de CV (Mexico)">N2</acronym> is the intermediate ...

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by atlamt
Mon Nov 16, 2009 12:11 am
Forum: Technical/Operations
Topic: DL Adding Winglets To Domestic Non-ER 767-300s?
Replies: 9
Views: 4255

RE: DL Adding Winglets To Domestic Non-ER 767-300s?

The STC I've seen is approved for the 767-300 and 767-300F. There is nothing specified about the <acronym title="DHL Worldwide Express (Belgium)">ER</acronym>'s. The <acronym title="DHL Worldwide Express (Belgium)">ER</acronym>'s have been getting the winglets because of the long flights they are on...

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by atlamt
Thu May 21, 2009 6:11 pm
Forum: Technical/Operations
Topic: Question About 727 Nose
Replies: 13
Views: 5607

RE: Question About 727 Nose

<TABLE BORDER=0 ALIGN=CENTER WIDTH=95% style="border-top: 1pt #28455E solid;border-right: 1pt #1B2E3F solid;border-bottom: 1pt #1B2E3F solid;border-left: 1pt #28455E solid;table-layout:fixed;border-spacing:0;padding:0;border-collapse: collapse;" bgcolor=#1E3951><tr><td><font size=2 face="ARIAL, Hel...

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by atlamt
Sat Feb 28, 2009 8:11 pm
Forum: Technical/Operations
Topic: Panel Numbering Query
Replies: 4
Views: 5003

RE: Panel Numbering Query

I'm pretty sure that the flight engineer's panel was the P4. That's why you don't see it on the 757 and 737.

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by atlamt
Fri May 23, 2008 12:30 pm
Forum: Technical/Operations
Topic: Different Aircraft, Same Tires?
Replies: 16
Views: 3796

RE: Different Aircraft, Same Tires?

<TABLE BORDER=0 ALIGN=CENTER WIDTH=95% style="border-top: 1pt #28455E solid;border-right: 1pt #1B2E3F solid;border-bottom: 1pt #1B2E3F solid;border-left: 1pt #28455E solid;table-layout:fixed;border-spacing:0;padding:0;border-collapse: collapse;" bgcolor=#1E3951><tr><td><font size=2 face="ARIAL, Hel...

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by atlamt
Sun May 04, 2008 2:36 pm
Forum: Technical/Operations
Topic: [fuselage/skin] Doublers
Replies: 11
Views: 8470

RE: [fuselage/skin] Doublers

You couldn't see page 136?

How about this.



Not your typical finger doubler but you can see the idea behind it.

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by atlamt
Sun May 04, 2008 3:32 am
Forum: Technical/Operations
Topic: [fuselage/skin] Doublers
Replies: 11
Views: 8470

RE: [fuselage/skin] Doublers

Here is a link to some images.

Airplane Design Book

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by atlamt
Mon Mar 17, 2008 7:46 pm
Forum: Technical/Operations
Topic: What Drives The Air Cycle Machine (ACM)?
Replies: 31
Views: 29429

RE: What Drives The Air Cycle Machine (ACM)?

The air passing through the turbine of the acm is what drives it. As long as you have bleed air going in the acm will spin.

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by atlamt
Sat Mar 15, 2008 12:06 am
Forum: Technical/Operations
Topic: 777 Heavy Maintenance - C-Check Question
Replies: 2
Views: 12840

RE: 777 Heavy Maintenance - C-Check Question

I don't know what the actual cost is but the majority of the cost in labor. Most repair station jobs don't pay well and many don't use licensed techs. This keeps their labor costs way down. If the repair station is in a third world country the wages are much lower. Dollar for dollar it's impossible ...

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by atlamt
Wed Feb 20, 2008 1:44 pm
Forum: Technical/Operations
Topic: MD11/DC-10 Tail Engine
Replies: 21
Views: 6709

RE: MD11/DC-10 Tail Engine

It's on the aft pedestal. You have to look for it. I worked on 88's for years without ever looking and never noticed it was there.

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by atlamt
Wed Feb 20, 2008 7:17 am
Forum: Technical/Operations
Topic: MD11/DC-10 Tail Engine
Replies: 21
Views: 6709

RE: MD11/DC-10 Tail Engine

<TABLE BORDER=0 ALIGN=CENTER WIDTH=95% style="border-top: 1pt #28455E solid;border-right: 1pt #1B2E3F solid;border-bottom: 1pt #1B2E3F solid;border-left: 1pt #28455E solid;table-layout:fixed;border-spacing:0;padding:0;border-collapse: collapse;" bgcolor=#1E3951><tr><td><font size=2 face="ARIAL, Hel...

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by atlamt
Sun Jan 20, 2008 3:01 am
Forum: Technical/Operations
Topic: Is It Called HMU On Pratt & Rolls Royce Fadec Engs
Replies: 8
Views: 14022

RE: Is It Called HMU On Pratt & Rolls Royce Fadec Engs

Pratt calls it a FMU. Fuel Metering Unit.

The fuel metering unit (FMU) receives signals from the electronic engine control
(EEC) to control fuel to the engine combustion section. The FMU also supplies
servo fuel to operate engine air, fuel, and oil systems.

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by atlamt
Thu Dec 20, 2007 5:02 am
Forum: Technical/Operations
Topic: 727 Cargo Doors
Replies: 11
Views: 6159

RE: 727 Cargo Doors

<TABLE BORDER=0 ALIGN=CENTER WIDTH=95% style="border-top: 1pt #28455E solid;border-right: 1pt #1B2E3F solid;border-bottom: 1pt #1B2E3F solid;border-left: 1pt #28455E solid;table-layout:fixed;border-spacing:0;padding:0;border-collapse: collapse;" bgcolor=#1E3951><tr><td><font size=2 face="ARIAL, Hel...

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by atlamt
Sat Nov 10, 2007 9:13 am
Forum: Technical/Operations
Topic: 737 Access Cover Screw Size?
Replies: 32
Views: 3675

RE: 737 Access Cover Screw Size?

All of DL's 737NG's use camlock style fastners on that access plate. (1/4 turn)

The IPC shows 2 possible p/n's FA412 and 27005S.

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