The winglets put stress on the center wing box due to the additional lift flexing the wings up.
Why not use the later -700s that were designed with winglets in mind? They're cutting a bunch of them up in TUS right now.
Am I the only one who sees "Simplified Technical English" as one of many methods being used to give a perception of low skill level as a justification for low pay??? Lean as the current attempt to regulate personality and Six Sigma quantifying human nature. The industry has been in a manipulation to...
Jump to postThe <acronym title="Fargo - Hector International (FAR / KFAR), USA - North Dakota">FAR</acronym> to which you refer states: "Materials (including finishes or decorative surfaces applied to the materials) must meet the applicable test criteria prescribed in part I of appendix F of this part, or other...
Jump to postIn case you werern't confused enough: In the US § 121.333 Supplemental oxygen for emergency descent and for first aid; turbine engine powered airplanes with pressurized cabins. (a) General. When operating a turbine engine powered airplane with a pressurized cabin, the certificate holder shall furnis...
Jump to postYou are all missing one very strong economic truth concerning the 747F. The nose loader is severely height limited. Long loads are great but one big advantage to the side door is the tall loads the plane can take compared to any other freighter. You can't load a Huey helicopter in a nose door. It ha...
Jump to postWhen you get right down to it it's as simple as "why can't I use my Pro-Line 21 modules in my Pro-Line 4 Integrated Card Cage? The look the same." They are different generations of doing the same thing while incorporating improvements and simplification and reducing power requirements. It's also a f...
Jump to postActually de-icing is at the descretion of the Captain but it is required on the MD80 when the air temp is below 50F and a couple of other criteria (like humidity level) are met. Anything more restrictive will be defined in the company's operating manuals. The MD80 is a special case because of the fl...
Jump to postAll three planes are Cedar Rapids designs even though the 777 is Phoenix hardware and software. The symbology is designed to whatever the buyer specifies to meet the current <acronym title="Fargo - Hector International (FAR / KFAR), USA - North Dakota">FAR</acronym> requirements and please the ultim...
Jump to postDeIcing is the responsibility of the airline. Anyone running MD80's has to keep a close eye on the temperature at this time of year because of the propensity for that aircraft to develop clear ice on the wings sitting on the ground in high humidity. I've done a bunch of deicings at <acronym title="O...
Jump to postOne other thing that Strat failed to mention about <acronym title="Federal Express (USA)">FX</acronym>. <acronym title="Federal Express (USA)">FX</acronym> is certified ETOPS under the new program that is going to be foisted on all US carriers very soon. As far as feeling safer on an ETOPS plane, it...
Jump to postLet's not forget the fuel waste as well as the potential for airflow disruption when you're not moving and there's a bit of a crosswind.
Jump to postHistory, kids: The 57 fleet got the heavy designation put on them after a number of incidents involving wake turbulence at extended distances relative to the aircraft weight. The defining incident was in Dec 1993 when a southbound L1011 was batted around to the tune of 5000 feet when crossing the wa...
Jump to postLet's not forget TWA into Detroit and an Evergreen 747 in 1992 over Canada on the way to <acronym title="New York - John F. Kennedy International (Idlewild) (JFK / KJFK), USA - New York">JFK</acronym>. That one went inverted too. <img src="/aviation-forums/graphics/smilies/smile.gif" alt="Smil...
Jump to postI believe this to be the single most Oxymoronic phrase cum Mandate in commercial aviation today. I'd like to hear from the rank and file and let management stand aside on this one. I don't know how it is in the <acronym title="Garuda Indonesia">GA</acronym> arena but the US commercial "tech" data ha...
Jump to postSince about 1988, if you'll check the designers, you'll find a gray cockpit is a Honeywell/Bendix/Allied Signal display system design and a brown is Collins. Don't be fooled by the labels on the AIMS of the 777. It's Collins from good old <acronym title="Iraqi Airways">IA</acronym>. I have no idea w...
Jump to post<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...
Jump to postIf you want to look and tell if it's conductive or not you need only note the color. If it's black that indicates the use of carbon black in the reinforcement structure of the basic formula. Carbon black is highly conductive. Latex rubber is neutral white before the additives are blended in. <...
Jump to postI can think of and can find evidence of no present or past civil airliners outfitted to receive fuel in flight.
I'm old enough to have a fairly long memory.
Anybody else?
Let's see now If the diameter of a fan is, arbitrarily, 6ft and the fan is rotating at 4000 rpm that would give you a circumference or distance traveled of 18.84 ft per revolution. The speed would then be 75360 feet per minute or something over 14 miles per minute which takes you to something over 8...
Jump to postThe wing on an MD80 is very flexable compared to the DC9 and would require an inordinate ammount of reinforcement in the fuselage to wing attach area and mid span area to support the additional wingtip lift generated by the winglets. It all comes down to financial balance. I don't see it happening e...
Jump to post<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...
Jump to postMY TURN! <acronym title="Midwest Airlines (Egypt) and Aerotransportes Mas (Mexico)">MY</acronym> TURN! A plane designed correctly would still be flying. . . <img src="/aviation-forums/graphics/smilies/flamed.gif" alt="flamed" border=0> Military aircraft don't count. They only prove that ...
Jump to postVery simply put (and there are exceptions) Flaps are an extension of the wing and may or may not affect the aerodynamic chord length and angle. Slats are more akin to an additional wing, forward of the wing, and act more to add lift than drag. Of course many aircraft have slats with more than one se...
Jump to postI'd think the company would be more interested in who put the sign in the window.
I think Million Air would be very sad to hear that they're out of business. <a href="http://www.millionair.com" target=_blank>http://www.millionair.com</a> Been around for a long time. They're simply more diversified than your average operation. <img src="/aviation-forums/graphics/smilies/smil...
Jump to postI think you're asking about the strakes. They're there to smoothe the airflow across the top of the wing and, believe it or not, across the horizontal stabilizer. It was decided early on that the 757 would be built without vortex generators or strakes unless they became absolutely necessary. As I'm ...
Jump to post<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, Helv...
Jump to post<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...
Jump to postIt never ceases to amaze me how people under a certain mental age will take the word of the local sot behind 7-11 or Handy Mart over that of people who work and operate things for a living. And then they're the first to scream "no fair" when they're called out or arrested for violating rules designe...
Jump to postI don't want to quibble but I'd be interested in the definition of immense damage. Two ducks struck the left side of an MD80 departing <acronym title="Cleveland - Hopkins International (CLE / KCLE), USA - Ohio">CLE</acronym> in 1996. One penetrated the radome and pressure bulkhead showering the capt...
Jump to post<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...
Jump to post<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...
Jump to postIt's also required so rescue personnel can see into the cabin should the situation arise.
<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...
Jump to post<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...
Jump to post<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...
Jump to postIn the United States it isn't legal. The problem isn't so much with the cell phone frequencies as it is with the internal operating frequency of virtually all microprocessor controlled devices. They, most normally, have a front end bus speed or frequency in the 100 to 133 MHz range. Is there anyone ...
Jump to postActually what you are calling the FMC is the <acronym title="Camden (CDU / YSCN), Australia - New South Wales">CDU</acronym> or MCDU. The FMC is a separate computer in the avionics package "downstairs". It's possible to have more than one <acronym title="Camden (CDU / YSCN), Australia - New South Wa...
Jump to post<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...
Jump to postIf you want a real shock look up the radome soft spot limits for a 747 in the SRM. In short, without a pressure blow the nosecone should never fail inward unless the operating limits are exceeded by a considerable margin. It's much the same as a thinwalled beer can. If it isn't dented it'll support ...
Jump to postForgive my memory but, Did the DC-9 through the 50 series even have the splash deflector installed by the factory?
<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...
Jump to postSome of Hitler's camoflaged runways had cobblestone bases under sod. Close but not brick.
I'd think clay brick would be too brittle for any sustained use.
Adding the r at the end of a word ending in an a sound is an Irish immigrant thing from the NE that spread ostensibly due to the integration of the forces during wartime. Or so Dr's O'Reilly and Phipps of Fla Tech University professed oh so many years ago. <TABLE BORDER=0 ALIGN=CENTER WIDTH=95% styl...
Jump to postCorrectly pronounced it's pee-toe as in the French. You'll find that in the US military and deep south it's often pronounced pee-tot for whatever reason of origin. Sort of like the plural of index (when used to describe a pointer). It's indicies or indexes pronounced in-dih-cees, not in-dice like so...
Jump to postIn the case of 473 it was some figure 8 drill holes in the center pylon hoop assy that led to cracking and failure in the area of the fuse pin bushings. The #2 engine is canted in 2 degrees to take advantage of airflow at cruise speed but this also causes the engine inlet to oscillate in a figure 8 ...
Jump to postIn an incident of this type (as opposed to the accident it was) it's normal for the manufacturer to take posession of the airframe until a resolution can be determined. In other severe cases with other aircraft BAC has kept the plane for up to a year before returning it to the original owner and ser...
Jump to postIn a world where freight is the only thing making money the chances would be good. It depends purely on the current regulations, condition of the airframe when put into storage, and cost to return it to current airworthiness. Passenger service doesn't appear to hold much promise. <img src="/av...
Jump to post<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...
Jump to post