|
BlackMK4 posted:Is there some kind of db with a list of planes that show no reg and just a hex? https://airframes.org is what I used.
|
#
?
Jun 30, 2021 12:30
|
|
|
|
| # ? May 25, 2024 03:02 |
|
|
Cable Guy posted:If that had happened at height, would a gear-box failure be an auto-rotate situation, or a bend-over and kiss your arse good-bye? Depends on the extent of 'gearbox failure' in the design of this specific helicopter. In the ideal case the main rotor drive shaft will shear if gear rotation is obstructed allowing the mr to freewheel and the pylon/mast holding the whole system up will not be affected by an internal failure of the main transmission. I don't know the design particulars of the hughes 369 (drat she fine) but my googling says the main xsmn is torque loads only so this is probably accurate enough.
|
|
#
?
Jun 30, 2021 13:32
|
|
|
Ola posted:The gearbox apparently had a spotty maintenance record from time in Italy, partly with the company "Copter & Boat’s Dream". I'd like to think the Italian company's defense is "we never said we serviced Helicopters." e: Flying Car completes test flight Nebakenezzer fucked around with this message at 15:41 on Jun 30, 2021 |
|
#
?
Jun 30, 2021 13:59
|
|
|
St_Ides posted:https://airframes.org is what I used. I get a site redirect when clicking an https link, but specifying http://airframes.org worked
|
|
#
?
Jun 30, 2021 16:13
|
|
|
St_Ides posted:https://airframes.org is what I used. superdylan posted:I get a site redirect when clicking an https link, but specifying http://airframes.org worked Interesting, thank you both. 520276 was doing circles over my area yesterday. Definitely not what it says it is there 
|
|
#
?
Jun 30, 2021 16:45
|
|
|
 flyinghearse.jpg
|
|
#
?
Jun 30, 2021 17:38
|
|
|
BlackMK4 posted:Interesting, thank you both. It's not a C-26B? How do you know?
|
|
#
?
Jun 30, 2021 18:10
|
|
|
Nebakenezzer posted:I'd like to think the Italian company's defense is "we never said we serviced Helicopters." Using a BMW engine no less. Can't wait for the expansion tank to crack while I'm at 8,000 feet
|
|
#
?
Jun 30, 2021 18:11
|
|
|
azflyboy posted:Seattle doesn't really see that many VFR departures (it's probably a single digit number per day), and a Q400 requesting a VFR clearance from that particular spot on the airport would have raised some eyebrows, since that area is almost exclusively used by Horizon to park operational spares during the day, and they're always towed to and from there. “just doing a quick maintenance flight test” It was a smaller company than horizon to be sure, but we used to do that pretty frequently at a previous company I worked at.
|
|
#
?
Jun 30, 2021 19:20
|
|
|
CarForumPoster posted:It's not a C-26B? How do you know? You're right, I typo'd the ICAO. It is a C26B. Normally the military stuff around here either doesn't show up at all or shows a registration/callsign, this one was weird.
|
|
#
?
Jun 30, 2021 19:30
|
|
|
You can occasionally catch maintenance flights at an airline’s heavy maintenance bases on FlightAware or whatever. I saw a delta jet just circling above ATL once. They had an 8xxx flight number so I assume that means it was filed IFR?
|
|
#
?
Jun 30, 2021 19:31
|
|
|
Ambihelical Hexnut posted:Depends on the extent of 'gearbox failure' in the design of this specific helicopter. In the ideal case the main rotor drive shaft will shear if gear rotation is obstructed allowing the mr to freewheel and the pylon/mast holding the whole system up will not be affected by an internal failure of the main transmission. I don't know the design particulars of the hughes 369 (drat she fine) but my googling says the main xsmn is torque loads only so this is probably accurate enough. I thought one of the MH-53E's fatal crashes was a gearbox failure, but it turns out it was a swashplate bearing failure. That one was reported as "gearbox locked up and the main rotor stopped spinning within 1.5 rotations." Later investigation showed it was the swashplate that locked up (with the same result).
|
|
#
?
Jun 30, 2021 20:01
|
|
|
Nebakenezzer posted:I'd like to think the Italian company's defense is "we never said we serviced Helicopters."
|
|
#
?
Jun 30, 2021 22:49
|
|
|
e.pilot posted:“just doing a quick maintenance flight test” here's a (small) airliner departing JFK VFR for a repositioning flight: https://www.youtube.com/watch?v=baAC49s-Wyw the controllers are a little confused at first but do clear the flight and don't call the airline for verification or anything. if the seattle guy knew how to talk the talk he probably could have taken the plane out and no one would have been the wiser until he blew a clearance or something. hell, he might even have been able to bring it back and park and they'd only figure it out from the hobbs meter. Sagebrush fucked around with this message at 23:09 on Jun 30, 2021 |
|
#
?
Jun 30, 2021 23:07
|
|
|
babyeatingpsychopath posted:I thought one of the MH-53E's fatal crashes was a gearbox failure, but it turns out it was a swashplate bearing failure. That one was reported as "gearbox locked up and the main rotor stopped spinning within 1.5 rotations." Later investigation showed it was the swashplate that locked up (with the same result). My father trained that guy if it's the Sigonella crash you're talking about. He was PIC in a -46D during his stint at MX Officer at HC-8 in Norfolk back in the 80s and they're making a run down to CG Air Station Elizabeth City when my father hits him with a hypothetical about a fire in the tail and what he should do if that ever happened. Well, the guy starts rattling off possible answers to the question with regards to putting the fire out by aviating and my father ups the ante and says "okay, what if it spreads?" Again, he gets "smart guy" answers proving he's read the manuals and done his homework at which my father stops him cold and says (mostly verbatim from his recollection) "if you've got a fire back there, you LAND. That fire's going to eat through the aluminum tube containing your flight controls. Note those two words: Flight. Controls. You lose those, you're no longer in control, you crash, and you die. You LAND." Then in 2006 he's become the XO of HC-4 at Sigonella (a job my father had held back in the early 90s after training on the MH at HT-12) and he's flying the pattern and the #2 engine (the centerline one, "which runs hotter because it gets less airflow,") catches fire. He evidently remembers my father's advice and bombs down from 3,000 feet as quickly as possible, but the helicopter decides to stop flying a few hundred feet off the ground and augers in, killing everyone on board. So he did everything right and the helicopter gods still ruled against him. The bittersweet part of the story...his brother died 16 years previously doing something stupid flying back to the boat out of the Philippines in a -46. He had come in doing NOE over a scouted route, but he egressed over a path he'd never flown before and had no intel on. A high tension wire sliced into the cockpit at ~120 knots and didn't stop until it got to the side door, slicing through metal and flesh like butter, killing everyone on board. Details: https://abcnews.go.com/GMA/story?id=124908&page=1 He (my father) looked a little confused when I mentioned the swashplate bearing failure resulting in a fatal accident, because to the best of his recollection, that never killed anyone, but it did cause the entire fleet to get grounded for a year. BIG HEADLINE fucked around with this message at 23:16 on Jun 30, 2021 |
|
#
?
Jun 30, 2021 23:13
|
|
|
babyeatingpsychopath posted:I thought one of the MH-53E's fatal crashes was a gearbox failure, but it turns out it was a swashplate bearing failure. That one was reported as "gearbox locked up and the main rotor stopped spinning within 1.5 rotations." Later investigation showed it was the swashplate that locked up (with the same result). I'm not familiar with these crashes but I imagine there was less of a looney toons main rotor stopping and more of a catastrophic disassembly.
|
|
#
?
Jul 1, 2021 01:27
|
|
|
Ambihelical Hexnut posted:I'm not familiar with these crashes but I imagine there was less of a looney toons main rotor stopping and more of a catastrophic disassembly. I'm thinking less Looney Tunes, and more WWII instructional cartoon. The hub stops, and the blades say "see ya later pardner!"
|
|
#
?
Jul 1, 2021 01:34
|
|
|
Ambihelical Hexnut posted:I'm not familiar with these crashes but I imagine there was less of a looney toons main rotor stopping and more of a catastrophic disassembly. This was the 2000 Corpus Christi crash. I got to see the airframe and it was in surprisingly good shape. Gearbox was in one piece with the swashplate and entire rotating assembly attached. Don't want to get into too many more details, but yeah. We were told at the time that the entire rotor system was nonrotating at the time of impact. Note that this is the same helicopter type that had a swashplate bearing failure in 1996 on Sikorsky's test ramp, killing everyone on board during the ACCEPTANCE FLIGHT. That was chalked up to vendors faking test procedures. After the 2000 crash, where the exact same bearing failed in the exact same way, the fleet was grounded (again), the vendor was fined, and the fleet got a whole new set of duplex bearings and a shiny new bearing monitor system. BIG HEADLINE posted:He (my father) looked a little confused when I mentioned the swashplate bearing failure resulting in a fatal accident, because to the best of his recollection, that never killed anyone, but it did cause the entire fleet to get grounded for a year. I worked with the pilot of the (nonfatal 2002) Sig crash. It's a really small community.
|
|
#
?
Jul 1, 2021 08:13
|
|
|
Splish splash splosh, 737 in the drink (both crew rescued): https://www.cnbc.com/2021/07/02/boeing-cargo-plane-makes-emergency-landing-in-ocean-off-honolulu-coast-faa-says.html
|
|
#
?
Jul 2, 2021 15:48
|
|
|
My favorite type of 737  https://twitter.com/flightradar24/status/1410965691931496453/photo/1 e: An Ex-PWA aircraft as well. I may have flown on it as a kid.
|
|
#
?
Jul 2, 2021 16:10
|
|
|
Wasn't there a helicopter that had the rotors depart the helo a few years ago in Norway because the gearbox disassembled itself.
|
|
#
?
Jul 2, 2021 16:15
|
|
|
Aren't successful ocean ditchings EXCEEDINGLY rare?
|
|
#
?
Jul 2, 2021 16:22
|
|
|
Depends on what perspective you view it from. From a shark's perspective, most ocean ditchings are very successful.
|
|
#
?
Jul 2, 2021 16:24
|
|
|
I'd be curious to know what the rest of the plane looked like. I wonder if this was a "A320 on the Hudson" survivable or if the crew just got extremely lucky in a way passengers wouldn't have if it wasn't a cargo plane.
|
|
#
?
Jul 2, 2021 16:27
|
|
|
bull3964 posted:Aren't successful ocean ditchings EXCEEDINGLY rare? Yes Cojawfee posted:Depends on what perspective you view it from. From a shark's perspective, most ocean ditchings are very successful. And in this case very lucky...
|
|
#
?
Jul 2, 2021 16:53
|
|
|
bull3964 posted:Aren't successful ocean ditchings EXCEEDINGLY rare? Attempted ditchings are also exceedingly rare.
|
|
#
?
Jul 2, 2021 17:09
|
|
|
News coverage of this is largely calling it an "emergency landing in water." Is there an aeronautical terminology here that differentiates this incident from "crash landing"?
|
|
#
?
Jul 2, 2021 17:15
|
|
EVERYWHERE 
|
I think the main difference is whether or not the pilots had control authority over the aircraft and controlled the descent.
|
|
#
?
Jul 2, 2021 17:18
|
|
|
meatpimp posted:News coverage of this is largely calling it an "emergency landing in water." Is there an aeronautical terminology here that differentiates this incident from "crash landing"? In actual aeronautical terminology it'd be called a "ditching" which is specifically a "forced landing" on water. I don't think "crash landing" is official terminology used by anyone?
|
|
#
?
Jul 2, 2021 17:23
|
|
|
There was the one hijacking that had a (mostly) successful ditching. 50 survivors out of 175, but also somewhere between 60-80 of the dead inflated their life vests inside the plane and couldn't escape because of that. Given how bad "ran out of fuel and need to set down on not an air strip" usually goes that's pretty impressive.
|
|
#
?
Jul 2, 2021 17:40
|
|
|
ranbo das posted:There was the one hijacking that had a (mostly) successful ditching. 50 survivors out of 175, but also somewhere between 60-80 of the dead inflated their life vests inside the plane and couldn't escape because of that. Is that the one where the hijackers tried to take control of the plane at the last second so the plane really crashed?
|
|
#
?
Jul 2, 2021 17:52
|
|
|
bull3964 posted:I think the main difference is whether or not the pilots had control authority over the aircraft and controlled the descent. That makes sense. hobbesmaster posted:In actual aeronautical terminology it'd be called a "ditching" which is specifically a "forced landing" on water. As does that.
|
|
#
?
Jul 2, 2021 17:55
|
|
|
meatpimp posted:News coverage of this is largely calling it an "emergency landing in water." Is there an aeronautical terminology here that differentiates this incident from "crash landing"? The lack of land, I think.
|
|
#
?
Jul 2, 2021 18:37
|
|
|
I think they call it a watering.
|
|
#
?
Jul 2, 2021 18:43
|
|
|
Cojawfee posted:I think they call it a watering. It's only a water landing if it's in Waterford, otherwise it's a sparkling ditching.
|
|
#
?
Jul 2, 2021 19:13
|
|
|
Crash splash?
|
|
#
?
Jul 2, 2021 19:14
|
|
|
Method of rapid braking using environmentally-friendly hydraulic fluid.
|
|
#
?
Jul 2, 2021 19:41
|
|
|
Ditching in the Pacific at night and walking away from it? Pretty danged good piloting, or exceedingly lucky
|
|
#
?
Jul 2, 2021 19:42
|
|
|
"crash landing" seems like a particularly non-descriptive term, since you can have emergency landings that are as safe and gentle as a normal one, normal landings that end in a crash after a safe touchdown, and crashes that don't involve "landing" at all except in the most literal sense. This was a forced landing (because the situation prevented them from landing where they wanted to) on water, which is also called a ditching.
|
|
#
?
Jul 2, 2021 19:48
|
|
|
|
| # ? May 25, 2024 03:02 |
|
|
Quinntan posted:Wasn't there a helicopter that had the rotors depart the helo a few years ago in Norway because the gearbox disassembled itself. Yep, whole thing came off and landed like a sycamore seed. The rest of the helicopter ... did not.
|
|
#
?
Jul 2, 2021 19:55
|
|
