Search found 1482 matches

by dl757md
Tue Feb 15, 2005 4:31 am
Forum: Technical/Operations
Topic: Painting The 787
Replies: 9
Views: 5714

Painting The 787

I'm not trying to bash the 787 or Boeing, but thinking about the pervasive use of carbon fiber in it, I can't help but think of the <acronym title="Mexicana Airlines (Mexico)">MX</acronym> difficulties that might result. More specifically I wonder how Boeing has addressed these issues. In addition t...

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by dl757md
Tue Feb 15, 2005 3:30 am
Forum: Technical/Operations
Topic: Paint In The Wings...why Not?
Replies: 16
Views: 6157

RE: Paint In The Wings...why Not?

Not a stupid question<b>A350</b>. Airliners are painted for many different reasons. <ol> <LI>Marketing - Companies want brand recognition with a distinctive look. It's much easier to achieve this with paint.</LI> <LI>Corrosion prevention - There is debate as to whether the benefits paint provides in...

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by dl757md
Tue Feb 15, 2005 2:58 am
Forum: Technical/Operations
Topic: 787 Wing Tanks
Replies: 10
Views: 6175

RE: 787 Wing Tanks

<b>If it works on these aircraft, why should the 787 be any different?</b> Good point <b>OldAeroGuy</b> but I never said it wouldn't work. I merely asked if anyone knows how they will make it work. I have every confidence Boeing has addressed the issue, just was wondering how. I didn't realize the A...

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by dl757md
Mon Feb 14, 2005 9:23 pm
Forum: Non-Aviation
Topic: Your Annoying Car Problems
Replies: 39
Views: 3708

RE: Your Annoying Car Problems

<i>Transmissions that fail on Chrysler minivans.</i> Amen to that! I have a '97 Grand Caravan that the tranny crapped out in 3 times in the first 62K miles. The last one they put in is still going strong at 220K. I guess they fixed the problem on their trannys finally. I also had a problem with stal...

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by dl757md
Mon Feb 14, 2005 8:40 pm
Forum: Technical/Operations
Topic: Can A 737 Land On A 2,400 Ft Runway?
Replies: 81
Views: 26408

RE: Can A 737 Land On A 2,400 Ft Runway?

<b>AvionicMech</b> One of the things I love about this forum is learning about what it's like outside of my little corner of the aviation world. How things are done differently and differences between seemingly like aircraft amazes me. I mean you'd think that they'd try to make all reversers for a t...

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by dl757md
Mon Feb 14, 2005 7:58 pm
Forum: Technical/Operations
Topic: 787 Wing Tanks
Replies: 10
Views: 6175

RE: 787 Wing Tanks

<b>The wing spar structure of 787 will not be made of composites so it will hold fuel just like any other modern airliner.</b> Widebodyphotog I'm not trying to flame your post. I don't however understand the premise behind it. From the Boeing website <a href="http://www.boeing.com/commercial/7e7/bac...

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by dl757md
Mon Feb 14, 2005 7:34 pm
Forum: Technical/Operations
Topic: Airbus Cabin Pressurisation
Replies: 15
Views: 10206

RE: Airbus Cabin Pressurisation

Aircraft pressurisation is done automatically by the onboard computers right?Or is there anything done manuelly by the pilots?

Pressurization is normally controlled by computers(auto mode) but there is also a standby(manual mode) in case of failure of the auto mode.

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by dl757md
Mon Feb 14, 2005 7:24 pm
Forum: Technical/Operations
Topic: Most Hated Aircraft Fluid?
Replies: 114
Views: 17563

RE: Most Hated Aircraft Fluid?

I wonder if theres any Aircraft related fluid thats liked.

Liquids found and consumed during a galley check. Non-alcoholic only of course!  Big grin

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by dl757md
Mon Feb 14, 2005 7:18 pm
Forum: Technical/Operations
Topic: Engine Fire
Replies: 16
Views: 4943

RE: Engine Fire

Sounds like an ignition problem. Raw fuel coming out of the back of the engine appears to be smoke when it is actually a fog of atomized unburned fuel. When the engine finally lit off a fireball resulted from the ignition of the fuel built up in the engine and emerged from the tailpipe. It's possibl...

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by dl757md
Mon Feb 14, 2005 6:25 pm
Forum: Technical/Operations
Topic: 787 Wing Tanks
Replies: 10
Views: 6175

787 Wing Tanks

Reading the other thread about wing tanks, a question came to mind. Does anyone here know how the tanks on the 787 will be sealed to hold fuel? Fuel and composites don't exactly get along. Carbon fiber probably does the best of the aviation composites but over time problems do occur. Will they have ...

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by dl757md
Mon Feb 14, 2005 6:08 pm
Forum: Technical/Operations
Topic: Fuel In The Wings Question
Replies: 44
Views: 16472

RE: Fuel In The Wings Question

<b>How long is the Ventelation on prior to entry & I'm sure fresh Air pumping in from one end & A suction hose from the other end is in place.</b> At Delta there is no prescribed length of time for ventilation. After defueling the tanks a ventuuri vacuum powered sump cart is connected to the sump dr...

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by dl757md
Mon Feb 14, 2005 4:39 pm
Forum: Technical/Operations
Topic: How Are The Autobrakes Engaged Is It When
Replies: 16
Views: 7320

RE: How Are The Autobrakes Engaged Is It When

Is braking differential? With that, I mean the right foot applies the brakes to the right main landing gear and vice versa...

Yes. You can actually aid the turning of the aircraft this way.

Dl757Md

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by dl757md
Mon Feb 14, 2005 9:23 am
Forum: Technical/Operations
Topic: MD-80 Etops?
Replies: 32
Views: 10242

RE: MD-80 Etops?

Some time ago someone posted a site that would give a pictorial representation of a route from x to y based on ETOPS 60, 120, & 180. Maybe someone can find that.

Try http://gc.kls2.com/

Dl757Md

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by dl757md
Mon Feb 14, 2005 9:18 am
Forum: Technical/Operations
Topic: Can A 737 Land On A 2,400 Ft Runway?
Replies: 81
Views: 26408

RE: Can A 737 Land On A 2,400 Ft Runway?

Hey SlamClick All of Delta's 737-300s have hydraulically actuated thrust reversers. They have CFM56-3 power plants. Personally, I've only ever seen hydraulic T/Rs on a 737, but then again I only know about <acronym title="Delta Air Lines (USA)">DL</acronym>'s planes. Avionicmech Not all CF6 powered ...

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by dl757md
Sun Feb 13, 2005 3:44 pm
Forum: Technical/Operations
Topic: Can A 737 Land On A 2,400 Ft Runway?
Replies: 81
Views: 26408

RE: Can A 737 Land On A 2,400 Ft Runway?

Slamclick If you consider the 98 knot approach speed you quoted in reply 15 and assume an 11 foot per second squared deceleration at MAX AUTO autobrakes (not sure if this is accurate for 737 - it is a figure for the 777), then the rollout from point of touchdown to stop would be about 1250 ft using ...

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by dl757md
Sun Feb 13, 2005 2:57 pm
Forum: Technical/Operations
Topic: Another 737NG PFD Question.
Replies: 10
Views: 4954

RE: Another 737NG PFD Question.

<b>I am pretty sure that it would all be done by what is known as pin-programming.</b> As LMP737 has said it is a simple 5 minute OPC software load into each DEU(Dispaly Electronics Unit). There is pin programming on the DEUs but AFAIK it doesn't have anything to do with customer configuration optio...

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by dl757md
Sun Feb 13, 2005 2:47 pm
Forum: Technical/Operations
Topic: Fuel In The Wings Question
Replies: 44
Views: 16472

RE: Fuel In The Wings Question

<b>I was told that modern aircraft, such as B777, has a different one</b> Yes, the 777 tank units are ultrasonic rather than capacitance units. They measure the height of the fuel in the tanks and the FQIS caculates the volume and weight of the fuel. I'm unaware of other newer generation A/C with an...

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by dl757md
Sun Feb 13, 2005 2:36 pm
Forum: Technical/Operations
Topic: How Are The Autobrakes Engaged Is It When
Replies: 16
Views: 7320

RE: How Are The Autobrakes Engaged Is It When

<b>The Autobrake system provides the selected rate of deceleration whether or not other deceleration aids are employed. For example, if a certain level of Autobrake is selected, and thrust reversers are also used, the aircraft will decelerate at the same rate as if thrust reversers were not used, by...

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by dl757md
Sat Feb 12, 2005 7:03 pm
Forum: Technical/Operations
Topic: How Are The Autobrakes Engaged Is It When
Replies: 16
Views: 7320

RE: How Are The Autobrakes Engaged Is It When

On the 777 the BSCU (Brake System Control Unit) uses the following inputs for autobrake control. <LI>truck tilt</LI> <LI>landing gear lever position</LI> <LI>air and inertial data</LI> <LI>parking brake valve position</LI> <LI>parking brake lever position</LI> <LI>right hydraulic system pressure</LI...

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by dl757md
Fri Feb 11, 2005 11:54 pm
Forum: Technical/Operations
Topic: Landing Gear Curiosities
Replies: 36
Views: 9206

RE: Landing Gear Curiosities

The truck positioner actuator on the 777 gear positions the the truck 13 degrees fwd wheels up when the gear are in the down and locked position. The truck positioner also tilts the truck 5 degrees fwd wheels down during retract for proper stowage. During extension this 5 degree fwd wheels down posi...

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by dl757md
Sun Feb 06, 2005 10:27 pm
Forum: Civil Aviation
Topic: XNA And FAY
Replies: 24
Views: 2260

RE: XNA And FAY

<b><acronym title="Fayetteville / Springdale - Northwest Arkansas Regional (XNA), USA - Arkansas">XNA</acronym> is a joint military/civilian airfield that were combined together.</b> I guess I could be wrong but I thought that <acronym title="Fayetteville / Springdale - Northwest Arkansas Regional (...

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by dl757md
Sun Feb 06, 2005 7:00 am
Forum: Travel, Polls & Preferences
Topic: Favorite Prop Plane?
Replies: 28
Views: 4822

RE: Favorite Prop Plane?

<br><center><font color="#EEEEEE" size="1" face="ARIAL, Helvetica, Geneva"><a href="/open.file/380000/L/" target="_blank">View Large</a> <a href="/open.file/380000/M/" target="_blank">View Medium<br><IMG SRC="/photos/small/0/0/0/380000.jpg" ALT="Click here for bigger photo!" border="0" width="200" h...

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by dl757md
Sun Feb 06, 2005 6:23 am
Forum: Technical/Operations
Topic: What Do Auto Brakes Control
Replies: 13
Views: 7981

RE: What Do Auto Brakes Control

<i>So am I right to assume that the automatic takeoff braking is applied regardless of auto brake settings in the cockpit?</i> No. The RTO (rejected takeoff) position must be selected on the autobrake select switch. I can't remember right now and I don't have a way to look it up at the moment but I ...

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by dl757md
Sun Feb 06, 2005 3:17 am
Forum: Technical/Operations
Topic: What Do Auto Brakes Control
Replies: 13
Views: 7981

RE: What Do Auto Brakes Control

Autobrakes control the wheel brakes only. Autospeedbrakes controls the spoilers and the thrust reversers have only manual control.

Dl757Md

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by dl757md
Sun Feb 06, 2005 2:59 am
Forum: Technical/Operations
Topic: 787 Composites And Lightning Strikes
Replies: 55
Views: 20765

RE: 787 Composites And Lightning Strikes

mrocktor I agree that the the lightning strike inspections will need to very comprehensive and detailed. One thing that I think will aid in the detection of strike points is that the entire structure will be required to be painted. The burn marks that the lightning leaves behind in the paint will be...

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by dl757md
Sat Feb 05, 2005 5:47 am
Forum: Aviation Hobby
Topic: Is This FS2006? (VIDEOS)
Replies: 2
Views: 6464

RE: Is This FS2006? (VIDEOS)

LOL! We wish! Probably Boeing's own simulation software. But who knows?Being neighbors in Seattle it wouldn't be too far of a stretch to imagine that Microsoft and Boeing collaberate on their simulators. The big diff between Boeing sims and MSFS is that the hardware Boeing uses isn't part of your us...

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by dl757md
Sat Feb 05, 2005 5:30 am
Forum: Technical/Operations
Topic: 787 Composites And Lightning Strikes
Replies: 55
Views: 20765

RE: 787 Composites And Lightning Strikes

mrocktor <b>In metal planes lightning usually does no structural damage whatsoever</b> I couldn't disagree more. While catastrophic structural damage is never a consequence, minor structural damage usually occurs to the skin and sometimes stringers and formers. The skin suffers pinholes or pock mark...

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by dl757md
Sat Feb 05, 2005 4:50 am
Forum: Civil Aviation
Topic: 2 DL Intl Flights Land At JFK After Threat
Replies: 15
Views: 6285

RE: 2 DL Intl Flights Land At JFK After Threat

Yep, It is being reported now that the Port Authority Police received erroneous information about hijackers on board, and F-15s escorting a flight. The amount of resources wasted on these incidents is huge, not to mention the negative affect on an already nervous flying public.  <img src="/disc...

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by dl757md
Sat Feb 05, 2005 4:38 am
Forum: Technical/Operations
Topic: 787 Composites And Lightning Strikes
Replies: 55
Views: 20765

RE: 787 Composites And Lightning Strikes

To clear up a couple of points. First, according to the Boeing 787 website, the entire fuselage including the skin, formers, and stringers, and the wing of the 787 will be made of composites. Second, for some reason, I'm not sure why, but lightning seems to strike the fuselage much more frequently t...

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by dl757md
Sat Feb 05, 2005 4:00 am
Forum: Civil Aviation
Topic: 2 DL Intl Flights Land At JFK After Threat
Replies: 15
Views: 6285

2 DL Intl Flights Land At JFK After Threat

Just saw on FOX that two Delta flights 119 from BOM via CDG and 81 have landed at <acronym title="New York - John F. Kennedy International (Idlewild) (JFK / KJFK), USA - New York">JFK</acronym> after a hijacking threat was phoned in. They showed one of the flights, a 767, taxiing away from the remot...

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by dl757md
Sun Jan 30, 2005 8:02 pm
Forum: Aviation Hobby
Topic: 18 Cylinder Model Gas Engine!
Replies: 1
Views: 3924

18 Cylinder Model Gas Engine!

You too can build your own 18 cyl dual row radial engine. Plans available here. http://www.agelessengines.com/default.html

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by dl757md
Sun Jan 30, 2005 5:48 pm
Forum: Civil Aviation
Topic: Are Composite Aircraft Difficult To Repair?
Replies: 13
Views: 3300

RE: Are Composite Aircraft Difficult To Repair?

Try some of the sites on this page to satisfy your intrigue.
http://www.google.com/search?hl=en&q=composite+repair

Dl757Md

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by dl757md
Sun Jan 30, 2005 12:16 pm
Forum: Civil Aviation
Topic: Are Composite Aircraft Difficult To Repair?
Replies: 13
Views: 3300

RE: Are Composite Aircraft Difficult To Repair?

To answer the question in the topic title, composite structures are not inherently harder than aluminum structures to repair. The process is quite different for obvious reasons and requires a different set of skills. This in of itself does not make it more difficult. <b>aluminum bends and can be rel...

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by dl757md
Sat Jan 29, 2005 11:50 pm
Forum: Technical/Operations
Topic: Damaged Engine Intake On MD-11
Replies: 20
Views: 5289

RE: Damaged Engine Intake On MD-11

Jan I understand what you mean about the perception of lay people. I admire your efforts on this forum to aid others in their understanding of what we both love. I didn't mean to question your knowledge. Rather I meant to help educate those who don't know. They are after all participating in the tec...

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by dl757md
Sat Jan 29, 2005 9:06 pm
Forum: Technical/Operations
Topic: Generator problem on pushback? Help!
Replies: 19
Views: 6339

RE: Generator Problem On Pushback? Help!

Speedbird001 They are located on the accessory gearbox which is mechanically driven by the <acronym title="Aerolineas Internacionales SA de CV (Mexico)">N2</acronym> rotor via the tower shaft. The gearbox is mounted on either the bottom or side of the engine and the generator is attached to Constant...

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by dl757md
Sat Jan 29, 2005 8:54 pm
Forum: Technical/Operations
Topic: Damaged Engine Intake On MD-11
Replies: 20
Views: 5289

RE: Damaged Engine Intake On MD-11

<b>Was the damage on the stainless steel part or aft on the painted part?</b> The nose ring or nose lip skin as the <acronym title="Air Madagascar">MD</acronym>-11 SRM(structural repair manual) refers to it is not stainless steel. It is a common misconception that the shiny or silvery gray forward m...

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by dl757md
Sat Jan 29, 2005 7:52 pm
Forum: Technical/Operations
Topic: High Speed Tape
Replies: 17
Views: 19862

RE: High Speed Tape

Speed tape is used for temporary repairs to areas subject to highspeed airflow. It's used on dented leading edges which if within allowable limits are first filled with a filler(some type of sealer or putty) to regain the shape of the leading edge and then covered with speed tape to act mainly as an...

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by dl757md
Sat Jan 29, 2005 10:57 am
Forum: Technical/Operations
Topic: Aircraft Oxygen Booster Carts
Replies: 17
Views: 6650

RE: Aircraft Oxygen Booster Carts

Sorry, never heard of servicing O2 this way. What exactly do you mean by a booster? At Dl we remove the O2 bottle from the A/C and take it to our O2 servicing room where we service it through a manifold supplied by industrial cylinders of aviators O2. Aviators O2 is the same purity as Medical O2 but...

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by dl757md
Sat Jan 29, 2005 9:04 am
Forum: Technical/Operations
Topic: Damaged Engine Intake On MD-11
Replies: 20
Views: 5289

RE: Damaged Engine Intake On MD-11

As for the foil it was part of a temporary repair that restores the aerodynamics of the intake. This type of temporary repair is only allowed when there is no significant reduction in structural strength. It is temporary in that at some point down the road, usually at a letter check, the cowl will b...

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by dl757md
Sat Jan 29, 2005 8:41 am
Forum: Technical/Operations
Topic: Damaged Engine Intake On MD-11
Replies: 20
Views: 5289

RE: Damaged Engine Intake On MD-11

Simply put, the nose cowl or ring as you call it can be heated with bleed air to prevent icing. Not knowing the nature of the damage it's hard to say whether it is something to worry about. It was probably within allowable limits and therefore no problem. As a passenger you have the right to questio...

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by dl757md
Sat Jan 29, 2005 8:32 am
Forum: Civil Aviation
Topic: Need Help With Equipment Type Please
Replies: 9
Views: 4300

RE: Need Help With Equipment Type Please

If it was 5 seats in the middle then it was an L-1011.

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by dl757md
Sat Jan 29, 2005 8:02 am
Forum: Technical/Operations
Topic: Most Hated Aircraft Fluid?
Replies: 114
Views: 17563

RE: Most Hated Aircraft Fluid?

<b>overheated turbine engine oil</b> Couldn't agree more. That is such a rancid, nasty smell. The worst is the oil from the <acronym title="Precision Air Services (United Rep. of Tanzania)">PW</acronym> 757 thrust reverser half hold open actuators. They leak all the time and that oil just fries in t...

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by dl757md
Sat Jan 29, 2005 5:50 am
Forum: Technical/Operations
Topic: Most Hated Aircraft Fluid?
Replies: 114
Views: 17563

Most Hated Aircraft Fluid?

To all mechanics, ground support, and pilots. What's the aircraft fluid that you most hate to be exposed to? Mine personally is Skydrol. I hate the stuff. It's effects have been well documented on this forum. The first precaution I learned about the hard way. My first day at Delta I went to the bath...

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by dl757md
Wed Jan 26, 2005 8:27 am
Forum: Civil Aviation
Topic: Delta To Serve MNL From SLC?
Replies: 71
Views: 8798

RE: Delta To Serve MNL From SLC?

WesternA318

During the Olympics D2 accommodated several 747s and 777s. They fit angled in rather than straight in.. I know firsthand that a 777 will fit there as I taxied the Soaring Spirit 777 from the hangar to D2 after the Delta Olympic Family Day back in 2000.

Regards
Dl757Md

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by dl757md
Tue Jan 25, 2005 7:41 am
Forum: Civil Aviation
Topic: Twins Over The Himalayas?
Replies: 22
Views: 12940

RE: Twins Over The Himalayas?

<b>With an engine out an ETOPS twin will in most cases lose redundancy on cabin pressure and air conditioning</b> Not exactly. You still have two pacs and two pneumatic sources for both of those pacs. Just because you lose an engine doesn't mean you can't run the pac on that side. You can supply pne...

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by dl757md
Mon Jan 24, 2005 9:17 pm
Forum: Technical/Operations
Topic: Captains Only For Taxiing?
Replies: 19
Views: 5027

RE: Captains Only For Taxiing?

At Delta the visual guide for taxiing into the gate consists of two different colored vertical fluorescent tubes arranged one in front of the other. They are aligned so that when the captain views them overlapping each other he knows that he is on the centerline without having to take his eyes away ...

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by dl757md
Mon Jan 24, 2005 8:54 pm
Forum: Civil Aviation
Topic: Delta To Serve MNL From SLC?
Replies: 71
Views: 8798

RE: Delta To Serve MNL From SLC?

Scxmechanic I'm fully aware of the fact that the mileage figures I quoted are statute miles. I'm also aware of the fact that Boeing lists the range of the 777-200ER as 7730nm. However as you pointed out that is in still air. The great circle route from <acronym title="Salt Lake City - International ...

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by dl757md
Mon Jan 24, 2005 4:07 pm
Forum: Civil Aviation
Topic: Lightening Strike Or Bird Hit
Replies: 3
Views: 2445

RE: Lightening Strike Or Bird Hit

Definitely a lightning strike. See the way the fiberglass is peeled outward? If it had been a birdstrike the material would have been pushed in along the leading edge of the damage and possibly peeled outward along the trailing edge only. When lightning strikes an improperly bonded composite structu...

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by dl757md
Mon Jan 24, 2005 3:51 pm
Forum: Technical/Operations
Topic: 9G Bulkhead V/s 9G Net
Replies: 9
Views: 2816

RE: 9G Bulkhead V/s 9G Net

Just a guess. It's easier to remove for whatever reason you might need to remove it. Probably lighter and cheaper also.

Dl757Md

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by dl757md
Mon Jan 24, 2005 3:48 pm
Forum: Civil Aviation
Topic: Delta To Serve MNL From SLC?
Replies: 71
Views: 8798

RE: Delta To Serve MNL From SLC?

<b><acronym title="Delta Air Lines (USA)">DL</acronym>'s 772ERs could easily fly such a route, though of course they never will</b> According to the great circle mapper <acronym title="Salt Lake City - International (SLC / KSLC), USA - Utah">SLC</acronym>-<acronym title="Manila - Ninoy Aquino Intern...

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