DELL_dude From , joined Dec 1969, posts, RR: Posted (13 years 10 months 3 weeks 5 days 11 hours ago) and read 1768 times:
Jet Crash Inquiry Shifts to Tail Section Breakup (new details!)
Some selected quotes from the link:
The tail fin--which helps to keep a plane flying straight--was pulled Monday from the waters of Jamaica Bay and appeared as if it had cleanly broken away from the rest of the fuselage.
The NTSB said the rudder was trimmed to a left deflection of 10 degrees, and Barry Schiff, a retired Boeing 747 captain and air safety consultant, said this appeared to indicate that the right engine had failed.
However, since the bolts remained secured to the main fuselage, suspicion focused on the first possibility, a structural breakdown.
Officials said the vertical stabilizer cracked above its attachment point to the fuselage, while the bolts that were supposed to hold it in place remained intact. They speculated that the problem might be some weakness in the material--a combination of aluminum and a composite material.
So it wasn't the bolts?
If it was the actual material fracturing why haven't they immediatley grounded all Airbuses?
Hkgspotter1 From Hong Kong, joined Nov 2005, 0 posts, RR: 0
Reply 1, posted (13 years 10 months 3 weeks 5 days 8 hours ago) and read 1715 times:
How about because its never happened before and there are much older A300's flying that have never had this problem. I know the Americans would be very happy if every Airbus was grounded but that will not happen.
All 737 have not been grounded even though they have crashed numerous times without reason.
If the tail did break off for no reason then Airbus will I'm sure see this as a najor problem, but what happened before the tail fell off, or the plane broke apart ?. What started all the shaking ??
Boeing nut From , joined Dec 1969, posts, RR:
Reply 2, posted (13 years 10 months 3 weeks 5 days 7 hours ago) and read 1699 times:
Hello again HKspotter,
Keep in mind with the 737 incidents that the causes were unknown. Theories, but unknown. The AA587 incident, if it indeed was the tail falling off, look for the Airbus aircraft to be grounded. This was indeed the case with AA191 (DC-10) back in 1979. DC-10's were grounded when the cause was known.
As far as the root cause, investigators are now looking at seperation minimums between AA587 and a JAL 744. They may have been too close and the aerodynamic forces mat have contributed to the crash.
Lsjef From , joined Dec 1969, posts, RR:
Reply 5, posted (13 years 10 months 3 weeks 5 days 5 hours ago) and read 1649 times:
It is ridiculous to believe Americans want Airbuses grounded but, at the same time, we must all recognize that had the events of 9/11 not happened, a healthier industry would have made it easier for the FAA to temporarily ground A300s. The fact they are not being grounded for a potential serious material fatigue issue only shows how fragile the industry is; there is HUGE political pressure to not encumber the industry with groundings, even for safety.
On the A v B issue, the more compelling question is, if this proves out to be a combination of material fatigue and wake turbulence, how might this impact the A380 and any other super-jumbos? I.e., might this incident catalyze the industry away from wake turbulence, to the point of abandoning the A380? If the FAA adds another minute or two to heavy-heavy departure separation, will the inefficiency of lost runway capacity more than offset the added passenger capacity for these heavies, further compelling airlines away from using heavies?
So, yes, there is an A v B issue here...but let's keep it civil everybody, OK?
RayChuang From United States of America, joined Jun 2000, 8212 posts, RR: 4
Reply 6, posted (13 years 10 months 3 weeks 4 days 23 hours ago) and read 1613 times:
I'll say this: if AA is forced to temporarily ground its A300B4-605R fleet, it would have very devestating effects on the airline, especially in the Caribbean.
Imagine JFK, MIA and SJU losing a large fraction of its AA flights until the planes are repaired--that will be how big the impact will be. AA could temporarily reassign its 767-300ER fleet, but I don't think that will come close to filling the needs of AA's very large Caribbean operations.