Search found 253 matches

by convair880mfan
Mon Nov 29, 2021 12:14 am
Forum: Technical/Operations
Topic: Oddities on the Flight Deck
Replies: 1
Views: 605

Oddities on the Flight Deck

A Boeing 727 pilot told me that on the -100, the control yoke was a bit off center. I'm wondering if there are other oddities on the flight decks of other airliners?

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by convair880mfan
Thu Nov 25, 2021 1:11 am
Forum: Technical/Operations
Topic: After mandated changes, are MD-11's now safe?
Replies: 30
Views: 2516

Re: After mandated changes, are MD-11's now safe?

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...

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by convair880mfan
Wed Nov 24, 2021 11:23 pm
Forum: Technical/Operations
Topic: After mandated changes, are MD-11's now safe?
Replies: 30
Views: 2516

Re: After mandated changes, are MD-11's now safe?

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...

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by convair880mfan
Wed Nov 24, 2021 9:36 pm
Forum: Technical/Operations
Topic: After mandated changes, are MD-11's now safe?
Replies: 30
Views: 2516

After mandated changes, are MD-11's now safe?

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.

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by convair880mfan
Tue Nov 23, 2021 1:49 am
Forum: Technical/Operations
Topic: Nose cones on TWA Boeing 707's
Replies: 2
Views: 757

Nose cones on TWA Boeing 707's

I am wondering why some TWA 707's had solid black nose cones, while others had just a small black area on the tip or were all white. Is there a reason for these variously colored nose cones? TWA Convair 880's also had differences in their nose cones.

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by convair880mfan
Tue Nov 16, 2021 5:40 am
Forum: Technical/Operations
Topic: Blow-In Doors on JT8Ds on the Boeing 737-100?
Replies: 5
Views: 973

Re: Blow-In Doors on JT8Ds on the Boeing 737-100?

That makes sense. Thanks!

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by convair880mfan
Tue Nov 16, 2021 5:38 am
Forum: Technical/Operations
Topic: SOP for flap retraction on the KC-135
Replies: 6
Views: 1066

Re: SOP for flap retraction on the KC-135

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?

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by convair880mfan
Tue Nov 16, 2021 5:05 am
Forum: Technical/Operations
Topic: Blow-In Doors on JT8Ds on the Boeing 737-100?
Replies: 5
Views: 973

Blow-In Doors on JT8Ds on the Boeing 737-100?

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...

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by convair880mfan
Mon Nov 15, 2021 10:45 pm
Forum: Technical/Operations
Topic: SOP for flap retraction on the KC-135
Replies: 6
Views: 1066

Re: SOP for flap retraction on the KC-135

Yes, that's a nice, nice video. Thanks Aaron747. Is that a compressor stall after touchdown or something else?

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by convair880mfan
Mon Nov 15, 2021 5:53 am
Forum: Technical/Operations
Topic: Is this sound from the APU compressor or the main powerplant compressor?
Replies: 10
Views: 982

Is this sound from the APU compressor or the main powerplant compressor?

https://youtu.be/dtx3Hfdc05Q

Don't know if the Boeing 727 APU can be operated in the air. Thanks.
-->

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?

https://youtu.be/dtx3Hfdc05Q

Don't know if the Boeing 727 APU can be operated in the air. Thanks.

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by convair880mfan
Mon Nov 15, 2021 3:37 am
Forum: Technical/Operations
Topic: SOP for flap retraction on the KC-135
Replies: 6
Views: 1066

SOP for flap retraction on the KC-135

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 ...

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by convair880mfan
Sat Nov 13, 2021 1:35 am
Forum: Technical/Operations
Topic: When jetliners are offered with multiple powerplant options, how do they decide which to choose?
Replies: 11
Views: 2220

Re: When jetliners are offered with multiple powerplant options, how do they decide which to choose?

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...

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by convair880mfan
Fri Nov 12, 2021 3:26 am
Forum: Technical/Operations
Topic: Does anyone know what the highest thrust JT8D engine was ever used on a Boeing 737-100?
Replies: 3
Views: 547

Re: Does anyone know what the highest thrust JT8D engine was ever used on a Boeing 737-100?

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...

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by convair880mfan
Fri Nov 12, 2021 2:15 am
Forum: Technical/Operations
Topic: Does anyone know what the highest thrust JT8D engine was ever used on a Boeing 737-100?
Replies: 3
Views: 547

Does anyone know what the highest thrust JT8D engine was ever used on a Boeing 737-100?

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...

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by convair880mfan
Thu Nov 11, 2021 9:40 pm
Forum: Technical/Operations
Topic: When jetliners are offered with multiple powerplant options, how do they decide which to choose?
Replies: 11
Views: 2220

When jetliners are offered with multiple powerplant options, how do they decide which to choose?

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...

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by convair880mfan
Thu Nov 11, 2021 8:32 pm
Forum: Technical/Operations
Topic: When pilots speak of a specific type of aircraft as "unforgiving" does that indicate a design flaw?
Replies: 15
Views: 2506

Re: When pilots speak of a specific type of aircraft as "unforgiving" does that indicate a design flaw?

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...

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by convair880mfan
Tue Nov 09, 2021 8:06 pm
Forum: Technical/Operations
Topic: Pilots wearing gloves during flight?
Replies: 8
Views: 1733

Pilots wearing gloves during flight?

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...

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by convair880mfan
Thu Nov 04, 2021 6:49 pm
Forum: Technical/Operations
Topic: What causes the pause on some aircraft between the time the nose is lifted off and the mains break free?
Replies: 11
Views: 1585

What causes the pause on some aircraft between the time the nose is lifted off and the mains break free?

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...

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by convair880mfan
Sat Oct 30, 2021 3:35 am
Forum: Technical/Operations
Topic: Why didn't Airbus design the A-380 wing with a great wing sweep.
Replies: 14
Views: 1982

Re: Why didn't Airbus design the A-380 wing with a great wing sweep.

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...

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by convair880mfan
Sat Oct 30, 2021 1:35 am
Forum: Technical/Operations
Topic: Why didn't Airbus design the A-380 wing with a great wing sweep.
Replies: 14
Views: 1982

Why didn't Airbus design the A-380 wing with a great wing sweep.

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...

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by convair880mfan
Sat Oct 30, 2021 1:15 am
Forum: Technical/Operations
Topic: Why didn't airline makers follow the lead of the Lockheed L-1011 and use stabilators instead of THS?
Replies: 7
Views: 1753

Why didn't airline makers follow the lead of the Lockheed L-1011 and use stabilators instead of THS?

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?

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by convair880mfan
Thu Oct 28, 2021 7:49 pm
Forum: Technical/Operations
Topic: What does slat extension do to the attitude of an aircraft on approach?
Replies: 7
Views: 818

What does slat extension do to the attitude of an aircraft on approach?

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...

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by convair880mfan
Thu Oct 28, 2021 12:32 am
Forum: Technical/Operations
Topic: From experience, do airline pilots have a sense of how high they are above terrain by looking out the window?
Replies: 5
Views: 1190

From experience, do airline pilots have a sense of how high they are above terrain by looking out the window?

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...

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by convair880mfan
Tue Oct 26, 2021 4:59 pm
Forum: Technical/Operations
Topic: Can flaps be used to slow an aircraft or only to allow it to fly safely at slower speeds?
Replies: 18
Views: 1434

Can flaps be used to slow an aircraft or only to allow it to fly safely at slower speeds?

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 ...

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by convair880mfan
Tue Oct 26, 2021 5:52 am
Forum: Technical/Operations
Topic: Is it dangerous when aircraft carry fuel in a center tank beneath the passenger cabin?
Replies: 43
Views: 3377

Re: Is it dangerous when aircraft carry fuel in a center tank beneath the passenger cabin?

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 ...

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by convair880mfan
Mon Oct 25, 2021 9:12 pm
Forum: Technical/Operations
Topic: Is it dangerous when aircraft carry fuel in a center tank beneath the passenger cabin?
Replies: 43
Views: 3377

Re: Is it dangerous when aircraft carry fuel in a center tank beneath the passenger cabin?

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...

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by convair880mfan
Mon Oct 25, 2021 7:21 pm
Forum: Technical/Operations
Topic: Is it dangerous when aircraft carry fuel in a center tank beneath the passenger cabin?
Replies: 43
Views: 3377

Is it dangerous when aircraft carry fuel in a center tank beneath the passenger cabin?

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...

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by convair880mfan
Sun Oct 24, 2021 9:32 pm
Forum: Technical/Operations
Topic: Do Boeing 737 pilots use Flaps 1 or Flaps 10 very often?
Replies: 11
Views: 1773

Re: Do Boeing 737 pilots use Flaps 1 or Flaps 10 very often?

Thank you so much Snuffaluffgus.

That answers so many of my questions and was very clear and understandable. Thanks again!

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by convair880mfan
Sun Oct 24, 2021 6:36 pm
Forum: Technical/Operations
Topic: Do Boeing 737 pilots use Flaps 1 or Flaps 10 very often?
Replies: 11
Views: 1773

Do Boeing 737 pilots use Flaps 1 or Flaps 10 very often?

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...

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by convair880mfan
Sun Oct 24, 2021 12:11 am
Forum: Technical/Operations
Topic: What was the most powerful PW JT8D engine ever used on a Boeing 737-100?
Replies: 4
Views: 907

What was the most powerful PW JT8D engine ever used on a Boeing 737-100?

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...

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by convair880mfan
Sat Oct 23, 2021 4:51 pm
Forum: Technical/Operations
Topic: Video showing Convair 880 flap and speed brake operation
Replies: 6
Views: 1295

Video showing Convair 880 flap and speed brake operation

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 ...

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by convair880mfan
Fri Oct 22, 2021 3:59 pm
Forum: Travel, Polls & Preferences
Topic: What defines a "long haul" flight?
Replies: 11
Views: 1036

What defines a "long haul" flight?

Is there any kind of fixed definition of "long haul" when used of flights or is it a fluid concept?

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by convair880mfan
Fri Oct 22, 2021 3:54 pm
Forum: Technical/Operations
Topic: Could MD-11's used domestically do without the winglets?
Replies: 31
Views: 3173

Re: Could MD-11's used domestically do without the winglets?

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...

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by convair880mfan
Wed Oct 20, 2021 5:30 pm
Forum: Technical/Operations
Topic: Could MD-11's used domestically do without the winglets?
Replies: 31
Views: 3173

Could MD-11's used domestically do without the winglets?

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 ...

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by convair880mfan
Wed Oct 20, 2021 5:20 pm
Forum: Technical/Operations
Topic: When pilots speak of a specific type of aircraft as "unforgiving" does that indicate a design flaw?
Replies: 15
Views: 2506

When pilots speak of a specific type of aircraft as "unforgiving" does that indicate a design flaw?

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...

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by convair880mfan
Wed Oct 20, 2021 1:32 am
Forum: Technical/Operations
Topic: Aircraft that are heavy on the controls or light?
Replies: 13
Views: 1099

Re: Aircraft that are heavy on the controls or light?

GalaxyFlyer, how was the Lockeed C-5 Galaxy. Would be interesting in knowing how the artificial feel was on that great aircraft.

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by convair880mfan
Tue Oct 19, 2021 6:52 pm
Forum: Technical/Operations
Topic: Aircraft that are heavy on the controls or light?
Replies: 13
Views: 1099

Aircraft that are heavy on the controls or light?

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...

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by convair880mfan
Tue Oct 19, 2021 2:52 am
Forum: Technical/Operations
Topic: Any opinions on hydraulic fuses?
Replies: 4
Views: 772

Re: Any opinions on hydraulic fuses?

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...

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by convair880mfan
Tue Oct 19, 2021 12:42 am
Forum: Technical/Operations
Topic: Any opinions on hydraulic fuses?
Replies: 4
Views: 772

Any opinions on hydraulic fuses?

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?

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by convair880mfan
Fri Oct 15, 2021 11:27 pm
Forum: Technical/Operations
Topic: Does anyone know the flap settings for the Boeing 720 and which settings were used for t/o or landing
Replies: 0
Views: 391

Does anyone know the flap settings for the Boeing 720 and which settings were used for t/o or landing

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!

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by convair880mfan
Thu Oct 14, 2021 10:09 pm
Forum: Technical/Operations
Topic: Was this Boeing 707 takeoff dangerous or only appears so to a non-pilot?
Replies: 8
Views: 2282

Re: Was this Boeing 707 takeoff dangerous or only appears so to a non-pilot?

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...

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by convair880mfan
Thu Oct 14, 2021 8:28 pm
Forum: Technical/Operations
Topic: Was this Boeing 707 takeoff dangerous or only appears so to a non-pilot?
Replies: 8
Views: 2282

Re: Was this Boeing 707 takeoff dangerous or only appears so to a non-pilot?

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...

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by convair880mfan
Thu Oct 14, 2021 7:08 pm
Forum: Technical/Operations
Topic: Was this Boeing 707 takeoff dangerous or only appears so to a non-pilot?
Replies: 8
Views: 2282

Was this Boeing 707 takeoff dangerous or only appears so to a non-pilot?

https://youtu.be/_RKa0_Qr1s4
-->

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_Qr1s4

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by convair880mfan
Tue Oct 12, 2021 6:19 pm
Forum: Travel, Polls & Preferences
Topic: For pilots: Was the DC-10 a joy to fly?
Replies: 7
Views: 2222

Re: For pilots: Was the DC-10 a joy to fly?

CosmicCruiser,
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.

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by convair880mfan
Mon Oct 11, 2021 3:52 pm
Forum: Travel, Polls & Preferences
Topic: For pilots: Was the DC-10 a joy to fly?
Replies: 7
Views: 2222

For pilots: Was the DC-10 a joy to fly?

As a passenger, I always enjoy my flights on the DC-10-10 and the DC-10-30. Not sure how many DC-10/MD-10 pilots are on the Forums, but I was wondering whether pilots enjoyed flying it?

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by convair880mfan
Mon Oct 11, 2021 3:44 am
Forum: Travel, Polls & Preferences
Topic: Your favorite plane that you haven't flown on
Replies: 31
Views: 2306

Re: Your favorite plane that you haven't flown on

Convair 880 or 880M
Concorde

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by convair880mfan
Sun Oct 10, 2021 8:32 pm
Forum: Technical/Operations
Topic: Does a jetliner need to be taken out of service after one of its engines suffers a compressor stall?
Replies: 2
Views: 964

Does a jetliner need to be taken out of service after one of its engines suffers a compressor stall?

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...

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by convair880mfan
Sun Oct 10, 2021 7:48 pm
Forum: Travel, Polls & Preferences
Topic: Optical illusions of flight
Replies: 3
Views: 350

Optical illusions of flight

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 ...

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by convair880mfan
Sat Oct 09, 2021 11:50 pm
Forum: Travel, Polls & Preferences
Topic: Anyone been on a DC8 when there was one seat row per window?
Replies: 2
Views: 828

Anyone been on a DC8 when there was one seat row per window?

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 ...

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