dagger Posted February 20, 2021 Share Posted February 20, 2021 Link to comment Share on other sites More sharing options...
dagger Posted February 20, 2021 Author Share Posted February 20, 2021 And in the air, quite a destructive event for that engine. Link to comment Share on other sites More sharing options...
dagger Posted February 20, 2021 Author Share Posted February 20, 2021 Link to comment Share on other sites More sharing options...
dagger Posted February 20, 2021 Author Share Posted February 20, 2021 Link to comment Share on other sites More sharing options...
dagger Posted February 20, 2021 Author Share Posted February 20, 2021 https://twitter.com/davidshepardson/status/1363240785681018880/photo/1 Link to comment Share on other sites More sharing options...
dagger Posted February 20, 2021 Author Share Posted February 20, 2021 Return to DIA on one engine was pretty routine, with a smooth landing. Plane was one of the oldest 777-200 builds, fifth off the line, but that's pretty much immaterial here. Link to comment Share on other sites More sharing options...
dagger Posted February 20, 2021 Author Share Posted February 20, 2021 Debris falling from the sky Link to comment Share on other sites More sharing options...
dagger Posted February 20, 2021 Author Share Posted February 20, 2021 Event captured from a dashcam Link to comment Share on other sites More sharing options...
Kip Powick Posted February 20, 2021 Share Posted February 20, 2021 Best part of the story is that there were no injuries on the aircraft and although the debris field is around 1 1/4 miles long, there have been no reports of anyone injured on the ground. Link to comment Share on other sites More sharing options...
AIP Posted February 20, 2021 Share Posted February 20, 2021 1 hour ago, dagger said: Return to DIA on one engine was pretty routine, with a smooth landing. Plane was one of the oldest 777-200 builds, fifth off the line, but that's pretty much immaterial here. Age of the airframe is irrelevant imo. How old was the engine ?? When was it last overhauled ?? Would be my questions. 1 Link to comment Share on other sites More sharing options...
FA@AC Posted February 21, 2021 Share Posted February 21, 2021 I'd suppose the aircraft was pretty heavy since it had just departed. Our of curiosity, and I'm sure this is a dumb question, but would an engine fire make fuel dumping out of the question? Link to comment Share on other sites More sharing options...
J.O. Posted February 21, 2021 Share Posted February 21, 2021 (edited) A 777 flying from DEN to HNL is unlikely to be all that heavy and may not have needed to dump fuel anyways. Besides, most twinjets can land at pretty close to maximum takeoff weight in an emergency. Edited February 21, 2021 by J.O. 1 Link to comment Share on other sites More sharing options...
AIP Posted February 21, 2021 Share Posted February 21, 2021 50 minutes ago, FA@AC said: I'd suppose the aircraft was pretty heavy since it had just departed. Our of curiosity, and I'm sure this is a dumb question, but would an engine fire make fuel dumping out of the question? If the fire was confirmed to be out, and there was a necessity to dump fuel it wouldn't be an issue. As per post by J.O., hard to imagine it being all up weight. Another consideration here, is even though KDEN has long runways, field elevation is above 5000 feet, which needs to be considered in the landing calculations. 1 Link to comment Share on other sites More sharing options...
mrlupin Posted February 21, 2021 Share Posted February 21, 2021 Fan blade failure.... Link to comment Share on other sites More sharing options...
IFG Posted February 21, 2021 Share Posted February 21, 2021 Indeed! Damage at wing root catches the eye, too. Looks mostly but not entirely to the fairing, but ... How far is that from tanks? Link to comment Share on other sites More sharing options...
AMEfirst Posted February 21, 2021 Share Posted February 21, 2021 The title of the thread say “uncontained failure”. I don’t see from any of the videos, photos, or information the any blades went through the engine case. Definitely catastrophic failure. Is there any other information on blades existing the engine through the case? Link to comment Share on other sites More sharing options...
JL Posted February 21, 2021 Share Posted February 21, 2021 (edited) This looks similar... http://aerossurance.com/safety-management/ndi-failures-b777-pw4077-fbo/ NTSB report docket: https://data.ntsb.gov/Docket/?NTSBNumber=DCA18IA092 Edited February 21, 2021 by JL Added docket link 1 Link to comment Share on other sites More sharing options...
Kip Powick Posted February 21, 2021 Share Posted February 21, 2021 41 minutes ago, AMEfirst said: The title of the thread say “uncontained failure”. I don’t see from any of the videos, photos, or information the any blades went through the engine case. Definitely catastrophic failure. Is there any other information on blades existing the engine through the case? I believe that, in this case, the "Uncontained" refers to the fact that a lot of debris left the engine area. With a "normal" engine fire, no parts of the engine leave the aircraft...the fire is simply extinguished and the engine is out of service. Link to comment Share on other sites More sharing options...
Maverick Posted February 21, 2021 Share Posted February 21, 2021 2 hours ago, IFG said: Indeed! Damage at wing root catches the eye, too. Looks mostly but not entirely to the fairing, but ... How far is that from tanks? Not far at all but that’s pretty beefy wing structure in that area. Scary deal regardless! Link to comment Share on other sites More sharing options...
Guest1 Posted February 21, 2021 Share Posted February 21, 2021 NOTE THE DAMAGE CAUSED TO THE TRUCK IN THE DRIVEWAY, AND THE HOLE IN THE ROOF OF ANOTHER HOUSE ..... LUCKLY NO ONE WAS INJURED. United flight's engine catches fire after Denver takeoff, returns to airport safely | Fox News Link to comment Share on other sites More sharing options...
AMEfirst Posted February 21, 2021 Share Posted February 21, 2021 3 hours ago, Kip Powick said: I believe that, in this case, the "Uncontained" refers to the fact that a lot of debris left the engine area. With a "normal" engine fire, no parts of the engine leave the aircraft...the fire is simply extinguished and the engine is out of service. Uncontained Engine Failure An “uncontained” engine failure is a failure where rotating elements of the engine penetrate the case of the engine. Link to comment Share on other sites More sharing options...
Kip Powick Posted February 21, 2021 Share Posted February 21, 2021 Just now, AMEfirst said: Uncontained Engine Failure An “uncontained” engine failure is a failure where rotating elements of the engine penetrate the case of the engine. I know that but consider this......perhaps the author saying "uncontained"is not 100 % airplane engine savvy and unintentionally used "uncontained"....not really a big deal is it?? Link to comment Share on other sites More sharing options...
Guest1 Posted February 21, 2021 Share Posted February 21, 2021 32 minutes ago, AMEfirst said: Uncontained Engine Failure An “uncontained” engine failure is a failure where rotating elements of the engine penetrate the case of the engine. Classic definition is indeed correct. There was a similar event near Hawaii also a 777 but Quote Analysis The airplane, a Boeing 777-222, experienced a full length fan blade fracture in the No. 2 (right) engine, a Pratt & Whitney (P&W) PW4077 turbofan, while in cruise flight shortly before top of descent. The examination of the No. 2 engine revealed most of the inlet duct and all of the left and right fan cowls were missing. Two small punctures were found in the right side fuselage just below the window belt with material transfer consistent with impact from pieces of an engine fan blade. The examination of the engine's fan blades revealed fan blade No. 11 was fractured transversely across the airfoil directly above the fairings that are between the base of each blade. The other fan blade, which was identified as fan blade No. 10 and was the adjacent trailing blade, was fractured across the airfoil at about midspan. Laboratory examination of fan blade No. 11 revealed a low cycle fatigue (LCF) fracture that originated on the interior cavity wall directly below the surface. this may be of interest https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/96738/pdf Link to comment Share on other sites More sharing options...
IFG Posted February 21, 2021 Share Posted February 21, 2021 - "The examination of the engine's fan blades revealed fan blade No. 11 was fractured transversely across the airfoil directly above the fairings that are between the base of each blade. The other fan blade, which was identified as fan blade No. 10 and was the adjacent trailing blade, was fractured across the airfoil at about midspanmidspan". Looking at the picture above of the naked engine: if history doesn't repeat itself, it sure rhymes a lot - Cheers, IFG Link to comment Share on other sites More sharing options...
Canoehead Posted February 22, 2021 Share Posted February 22, 2021 Juan Browne has does a really good job of explaining incidents and accidents. He's a 777 pilot himself and was a US military pilot in the past. His military and civilian pilot experience shows when he describes the ins and outs of events like this. He did a fabulous job of explaining the Snowbird crash last year. . Link to comment Share on other sites More sharing options...
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