November 24, 201213 yr You had one job! By the way, it's the first time I realize some operator keeping the centre body gear retracted. The plane had that option but I was told that nobody uses it. Edited. Guess I'm stupid, that version of the plane doesn't have a centre gear. :blush:
November 24, 201213 yr Author By the way, it's the first time I realize some operator keeping the centre body gear retracted. The plane had that option but I was told that nobody uses it. It depends on the variant of DC-10. Chris Miller
November 24, 201213 yr Point taken. Landing gears are highly overrated anyway. :Whistle: Or is it the undercarriage?
November 24, 201213 yr Author Point taken. Landing gears are highly overrated anyway. :Whistle: Or is it the undercarriage? The heavier the aircraft is, the more wheels are needed to help displace the weight on surfaces the aircraft is operating on. Here is an excerpt on what is allowed on a runway with different wheel configurations. If you look at the RWY 03-21 line you can see the S-200, D-200, 2S-175, 2D-400. This gives you maximum operating weights for all the different wheel configurations. With the 2D being the most because you have the wheels side by side and not trailing each other. These are in thousands of pounds. Chris Miller
November 24, 201213 yr Reminds me of an old Pelican's Perch column where he recounts almost landing a 747 with the gear up. http://www.avweb.com...n/188536-1.html _________________________________ -Dan Everette CFI, CFII, MEI 7900X OC @ 4.8GHz | ASRock Fatal1ty X299 Professional | 2 x EVGA GTX 1080 Ti FTW3 (SLI) | 32GB G.Skill DDR4 2800
November 24, 201213 yr Now that's quite a story, Dan. And it even offers that emotional and psychological level. We landed, completed the usual drills, cleared Customs, and split up to go our separate ways. No one said a word about the (near) incident, then or later. I knew my knees were shaking, but they didn't. I didn't tell the story for at least 15 years. There is no doubt in my mind that all five of us had slipped a gear somewhere during that approach, and we all thought the gear and flaps were down, and the checklist was complete. No, all five of us KNEW the gear was down – and it wasn't. Thanks for the detail on the weight distribution and limits, Chris. I recall a study when the A380 entered the service. They had to work against the misconception that the huge and surely heavy plane would harm runways over the levels of the already known 'harmful' ones. Turned out that e.g. the large 777 variants are a bigger problem in that regard. Now, on that DC10 (variants with centre gear) and MD11 case, I just had that statement in mind that the 'disable centre gear' mode was never used. So all the videos I've watched or the pictures I saw always featured an extended centre gear unit. Hence my when finally seeing a retracted one. Well, wrong variant, as you've pointed out. :blush: By the way, they should have heard Betty in the cockpit saying 'landing gear!', not? Maybe that one saved the day. (Values from the MD11.) Approach, 'Landing Gear!'. Gear not down and locked and flaps in land mode, throttles retarded, less than 210kts, 1200ft RA or below and flaps not in land mode. Landing, 'Too Low Gear!'. Less than 159kts below 245ft RA, less than 190kts and below 500ft RA.
November 24, 201213 yr It is a great shot seeing the gear come down from that close to it. "Hope nobody saw that..." :Whistle: Dang that YouTube :ph34r: Matthew Kane I'm Dyslexic, what's an error to you is not to me
November 24, 201213 yr Author By the way, they should have heard Betty in the cockpit saying 'landing gear!', not? Maybe that one saved the day. (Values from the MD11.) Approach, 'Landing Gear!'. Gear not down and locked and flaps in land mode, throttles retarded, less than 210kts, 1200ft RA or below and flaps not in land mode. Landing, 'Too Low Gear!'. Less than 159kts below 245ft RA, less than 190kts and below 500ft RA. Yeah they were probably adding more flap and that is when it went off. I'm not familiar with what the variables needed are for that in the DC-10. I'm not even sure what it is in the airplane's I fly to tell you the truth. :lol: Chris Miller
November 25, 201213 yr We could just say that extending the gear is a sort of noise abatement procedure. First, the cockpit noise goes away (warnings), later, the scratching metal is avoided too. What a treat! :lol: I must admit that I did land planes in the sim, the gear warning screaming at me, and I was so happy until.. well, that noise! :blush: But that happened on planes where there only is that beeeeep tone, not the 'landing gear!' voice. Don't know if that would have helped me. Did I mention that it even was at the wrong airport? Don't ask. I'm not even sure what it is in the airplane's I fly to tell you the truth. :lol: As long as it comes up when you need it. Well, lets hope you never need it of course. Is it possible that the folks in the video just avoided the gear for as long as they could? Well, maybe not since they are pretty close and should be stable and configured by then, huh? Recalling Rónán's article with the approach boxes.
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