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photos of uncontained engine failure on Delta B744
Photos have emerged of an uncontained engine failure suffered by a Delta Airlines Boeing 747-400 last week en-route from Detroit to Tokyo’s Narita airport in Japan. The engine failure, which occurred N661US on Oct 23, took place as the Pratt & Whitney PW4056-powered aircraft was climbing through 5,000 ft (aviationweek.com) Más...Sort type: [Top] [Newest]
Hydraulic lines,normally have redundant"Back-up"systems.In case of engine damage,or shut-down.Even if one of the fuel-nozzles are faulty.Improper flow patterns can cause the internal fuel-nozzle to act as a cutting torch.Literally concentrating the flame tearing up The HPT T1-turbine blade(s)thrusting it through the whole Turbine"Hot'section.This aircraft was climbing.So the flow pattern on the nozzles were in primary.The intense heat from defective fuel nozzles.can destroy the turbine section quickly.Once a blade or shroud breaks free.Producing a cascading effect of damage to the Turbine Section.
Looks like a bad maintenance for an old plane.
Or it may be a simple bird strike.
Scanning through the lists at www.planesregister.com, it does appear that N661US was the first 747-400, flying from KMSP to KPHX on its maiden flight for NWA on Feb 9, 1989. Before being handed over to NWA, it was registered as N401PW, which would indicate it was a Pratt & Whitney engine test bed for a while. Ironic when you think about this incident. However, the airframe age wouldn't be a likely factor in an engine failure. In its 23.5 years of service, it's difficult to know how many dozens of engines have been used on that one single aircraft. Unlike airframes, I don't know of any tracking on the engines that's available to the general public.
Well I'm glad they carried out their emergency procedures as per the book. They were at climb thrust which may partly explain why it was uncontained. It also brings to mind the uncontained failure on the A380, and how many systems that damaged.
Yeah it does Ralph. See my comment from above yesterday. It should be noted that there weren't any systems failures on this Boeing product.