My father was friends with a CEO of a major airline. They were visiting each other once and I heard the CEO say: "Safety is about how many fatalities we can suffer in a year and still convince the traveling public that we are "safe." I was surprised by his comment which seemed to me t...Jump to post
For some reason my "linker" is not working. The changes are actually NTSB recommendations described on pages 72-74 on the NTSB Aircraft Accident Report "Crash During Landing FedEx, Inc. McDonnell Douglas MD-11, N611-FE Newark International Airport Newark New Jeresy [sic] July 31, 1991...Jump to post
Since time has passed since some high-profile FedEx MD-11 crashes, have changes mandated by the FAA to the Boeing Commercial Aircraft Company now made the aircraft safe during takeoffs and landings? I realize this aircraft is no longer used for passenger transportation.Jump to post
Thank you e38. That was just great information. Helped a lot. I should have posted this in the Military Forum.
Was flying the KC-135 a real blast? I know some had turbojets, some turbofans and some those CFM engines. If it isn't too personal a question, which kind did you pilot?
Does anyone know why the Boeing 737-100 had blow-in doors on the forward part of the engine nacelles like some of the models of the 707? I know the reason for these panels but am wondering why some aircraft engines needed them while others did not. I seem to recall, but could be wrong, that early Bo...Jump to post
There is a high pitched noise during this video. It sounds to me as though the APU was operating during taxi, takeoff and climb. Am I wrong? Is it just compressor noise from the JT8Ds?
Don't know if the Boeing 727 APU can be operated in the air. Thanks.
This question is for current or former KC-135 pilots. On the KC-135, if takeoff is made at a flap setting of 30: during clean-up do you retract the flaps first to 20 and then UP or do you retract to UP from 30 without stopping at 20? Or does it depend on other factors? Also . . . A Boeing 707 pilot ...Jump to post
That is very interesting, 77west. Can you or someone else elaborate on "rating plugs." Are these the same as "ID" plugs. ? http://nandang-smart.blogspot.com/2014/09/cfm56-7b-identification-plug.html I wonder if the DC-10-15s for "hot and high" airports used what you cal...Jump to post
Thank you CrewBunk. That is very helpful. Someone pointed me to a document called "The DOT FAA Type Certificate Data Sheet." Sept 01, 2010. According to this document the following are approved Boeing 737-100 Engines: Two Pratt & Whitney JT8D-7, JT8D-7A, JT8D-7B, JT8D-9, JT8D-9A and JT...Jump to post
Or does anyone know a source for this information, preferably an online source without a pay wall? Could a Boeing 737-100 take any version of the Pratt and Whitney turbofan up to the -17R? Not interested in if this would or would not make economic sense. The 737-100 wasn't that popular compared to i...Jump to post
Sometimes I see that a jet airliner can be bought with either lower or higher thrust powerplants. Usually the higher thrust version of the powerplant are heavier but offer better takeoff performance all other things remaining equal. The Boeing 737-500 , for example, was offered with either the 18,50...Jump to post
I wonder if McDonnell Douglas should have just stretched the DC-10 or perhaps made a twin engine aircraft right off the bat. The design of an aircraft is a job for many engineers. I would think the engineers at MD had plenty of expertise and experience with those with the most expertise and experien...Jump to post
On some flight deck videos, I have noticed pilots wearing gloves. Seems more common for military pilots although my knowledge is scant. I was watching pilots of a KC-135 and an AWAC aircraft and they were wearing gloves. Some flight deck videos of Japanese carriers show the pilots wearing thin white...Jump to post
I have experienced this on the Boeing 727 during takeoff. The nose is rotated and then it just hangs there for a bit before the mains break free with that "thud" sound of fully extended struts. Also noticed this on videos of the DC-8 which almost seems to hover before completely lifting of...Jump to post
Is the Boeing 747 the fastest non-supersonic jetliner? And if so, does the wing sweep have something to do with that. Are there airliners with the newer supercritical wings that can match the 747 for speed? Not sure speed is a big deal anymore since crowded airports and other delays eat up any speed...Jump to post
Wing sweep on the Boeing 747 is 37.5 degrees at quarter chord. This allows it a higher Mach cruise speed. I am curious why Airbus didn't adopt such a highly swept wing for its A-380 and other long range aircraft? [Apparently the A380 has a double swept wing.] For that matter, why didn't Boeing adopt...Jump to post
Many people have said that the Lockheed L-1011 was ahead of its time in many of its features. One of its features was the use of an all-flying tail in place of the traditional trimmable horizontal stabilizer. If this was a good idea, why wasn't it used in later jetliner designs? Anyone know?Jump to post
Does the nose balloon up and are trim changes necessary after slats are extended? Does it depend on the aircraft? Am mostly interested in the DC-10 and MD-11 but would value information on any aircraft? Which leading/trailing edge flap or slat settings require the largest trim changes? I mentioned i...Jump to post
As a passenger it is impossible for me to have an accurate sense of how high I am above the terrain just by looking out the window of an aircraft I am flying on. But I am wondering if this is true of pilots who fly into and out of areas sometimes hundreds of times in their careers. Without looking a...Jump to post
I have heard contradictory things about this. I know flaps create some drag while increasing lift and that the first flap settings creates a lot of lift for a small amount of drag compared to landing flap configurations relatively speaking. Reading up on this subject I have learned that flaps lower ...Jump to post
Thanks to everyone who responded. I learned a lot. Thinking about what the others have written here made me think that if center fuel tanks were dangerous, the FAA and the aviation authorities of other countries would not allow them in commercial aircraft. I am also thinking now that I am not aware ...Jump to post
Is the fuel from the center fuel tank used first? If not, during a wheels up landing, is the center tank fuel the first to be jettisoned before landing? I wonder if center fuel tank fires have caused a lot of fatalities and injuries that would not have happened if fuel was only kept in the wing tank...Jump to post
I've read about some airliners that carry fuel beneath the passenger cabin in order to give them added range. Is that dangerous, for example, in the event landing gear fails to extend and the plane is forced to make a belly landing. Also . . . do airliners that carry fuel in the horizontal stabilize...Jump to post
Thank you so much Snuffaluffgus.
That answers so many of my questions and was very clear and understandable. Thanks again!
After watching many Boeing 737 videos taken from out of passenger windows, it seems like Boeing 737 pilots sometimes skip some of the settings during approach to landing. I have seen a picture of a 737 flap indicator with the following settings: 1, 2, 5, 10, 15, 25, 30 and 40. A retired 737-200 Capt...Jump to post
Wikipedia is not considered to always be correct in its information. From this source if seems like the 737-100 could take even the highest thrust Pratt and Whitney JT8D engines [-17R] but I don't know if it really could take such engines. The 737-100 was not hugely popular and less than 100 were pr...Jump to post
https://youtu.be/g0bHp1fdwY0 This video of a cigarette commercial using clips of the Convair 880 and Boeing 707 has views of the Convair 880 flap operation, speed brake operation and a bit of air to air of a Convair 880 coming in to land for anyone interested. The Convair 880 hand vortex generators ...Jump to post
Would removing 900 pounds result in significant fuel savings on short stage lengths? Since the winglet is actually part of the wingtip, I would imagine that some other type of wingtip would need to replace it and that would weigh something too. Would a new wingtip need to go through the FAA approval...Jump to post
Wonderful, wonderful information. Thanks so much.Jump to post
When Japan Airliners and ANA used a domestic versions of the 747-400 called the 747-400D, they didn't use the winglets since the added weight didn't translate into cost savings on the short stage length missions of these aircraft with their brief cruise portions of flight. I'm wondering whether the ...Jump to post
I am not a pilot or engineer or anything like that. I've read some debates here on the Forums on various aircraft types described with the adjective "unforgiving." This is a term taken from morality, ethics and psychology and then used analogically of aircraft. When an aircraft is describe...Jump to post
GalaxyFlyer, how was the Lockeed C-5 Galaxy. Would be interesting in knowing how the artificial feel was on that great aircraft.Jump to post
Sometimes when reading Aviation Week and Space Technology Pilot Reports on various aircraft, the writers speak of pull and push forces on the yoke or rudder, for example, x aircraft required a 30 pound push force on the rudder pedals during an engine out landing approach. Those of you who are pilots...Jump to post
My bad. I should have been more specific. I am referring to situations where a failure, in one case of a defectively repaired rear pressure bulkhead on a Japan Air special Boeing 747 and in another case, the failure of a tail mounted engine component on a DC-10-10 resulted in damage to all the hydra...Jump to post
A couple of tragedies occurred when all hydraulic fluid was lost. Japan Air 747 and United DC-10. Do all commercial types use hydraulic fuses or just some? What other systems are there to prevent the complete loss of hydraulic fluid after a catastrophic failure?Jump to post
I've done a key word search to no avail and tried looking at enlarged photos of B720 instrument panels . . . also to no avail. Perhaps there are some former 720 pilots who know or enthusiasts who have Flight or Operating Manuals. Grateful for any information!Jump to post
Thanks so much 113312. I really appreciate it! When I was a teenager I read a lot of books on how to be a flight engineer, how to ace the F/E test for the B727, tricks for passing the 727 F/E written exam and so on. I read them but did not study them, did not memorize them, did not take the practice...Jump to post
I'll have to look up those abbreviations, but I do appreciate your comments. I would think, and I could be wrong, that your numbers would have to be pretty accurate. What I mean is there seems to be little room for error if you underestimated your load, if your weight and balance was off or if you r...Jump to post
I am not a pilot, so what appears to be a real "nail biter" might be completely normal. What do you pilots think of this video. It does provide a nice view of a standing takeoff .https://youtu.be/_RKa0_Qr1s4Jump to post
I am not quite sure what you mean by "sluggish" when referring to the controls on the MD-10 [DC-10]. Do you mean the rudders, ailerons and speed brakes were slower to respond to your control inputs than the controls of the MD-11?. Sorry I am not a pilot.
I hate to be at the mercy of Wikipedia here. I am guessing that a compressor stall in an engine due to a bird strike would require an inspection after landing. What about other types of compressor stalls? It seems like there are degrees of seriousness involved involving duration, EGT limits and so o...Jump to post
My first flight in a Boeing 707 occurred when I was a college student studying physics, so it was a very special experience for me. As the aircraft lifted off the ground, our plane felt motionless and it appeared that it was the earth that was falling away from us at an angle. During the first turn ...Jump to post
The original DC8 had generous seat pitch such that for every row of seats there was one large window. Economics eventually caused airlines to pack more and more seats in the DC8 but I wonder if there are any old timers out there who flew on the DC8 when the passenger compartment was configured with ...Jump to post