Eghansen From , joined Dec 1969, posts, RR:
Reply 4, posted (6 years 11 months 1 week 3 days 8 hours ago) and read 81775 times:
A cell phone can send a signal about 10 miles, sometimes 15 miles if the conditions are perfect. As the aircraft was flying at 35000 feet, that is 7 miles just to the ground, plus the miles from the position of the aircraft to the nearest tower.
The aircraft would have to be within 13 miles horizontal from the nearest tower if the signal was sent 15 miles and the aircraft was flying at 35000 ft.
ThegreatRDU From United States of America, joined Mar 2006, 2326 posts, RR: 4
Reply 8, posted (6 years 11 months 1 week 3 days 8 hours ago) and read 81435 times:
It has to be something immense lightning and turbulence alone can't bring down an A330.....pilot error involved maybe?...they said the flight crew was experience though....I don't know they just have to find this plane though.
Depends what you define as "correct". An airline is naturally going to always base their departure time on the time they leave the gate, as that determines what an "on-time" flight is. Authorities do not have to please anyone with on-time factors, so they likely go with the more accurate "time their butts were in the air"
Hardiwv From Brazil, joined Oct 2004, 8780 posts, RR: 47
Reply 16, posted (6 years 11 months 1 week 3 days 8 hours ago) and read 80816 times:
Quoting ManuCH (Reply 13): Swiss news sources are quoting there also are 6 Swiss nationals among the passengers. I wonder if there are different sources for passenger lists, or what causes these differences
Apparently the contradiction in the list was due to the fact that many pax had double nationality (as you may know Brazil is a country heavily colonised by European immigrants so it is common for many Brazilians to have double nationality/passport).
Gonzalo From Chile, joined Aug 2005, 2035 posts, RR: 2
Reply 17, posted (6 years 11 months 1 week 3 days 8 hours ago) and read 80844 times:
Article from Yahoo News :
" A handful of jets have been blown up by lightning, including a Pan American flight in 1963 that killed 83 people. But radar and other improvements in weather forecasting now make thunderstorms - and their lightning - easier to avoid.
In the early 1980s, NASA flew a jet into a thunderstorm on a test. It was hit 72 times in 45 minutes and gave scientists valuable data.
Commercial planes are still hit about once a year, research from the University of Florida has shown. A strike typically starts at a wingtip, nose or tail and courses through the aircraft's skin, which is often made of aluminum-a good conductor. Many strikes are initiated by the plane itself, and most occur during the climb to cruising altitude or descent and when the plane is in a cloud.
The plane's lights might flicker, but most of the energy just heads back into the sky if there are no gaps in the aircraft's skin. "
Personally, i have a LOT of skepticism about the possibility of a single lightning hit can do too much damage to a Wide body aircraft, although can be a problem...maybe they got the lightning + hail of a tennis ball size + heavy turbulence + .......+ (??)...
RFields5421 From United States of America, joined Jul 2007, 7868 posts, RR: 32
Reply 18, posted (6 years 11 months 1 week 3 days 8 hours ago) and read 80822 times:
RE the timeline and the 4 hour delay.
Only in 20/20 hindsight can anyone say this is the time when contact was lost.
The maintenance messages which were apparently the last thing sent by the aircraft are not read as they come in by humans. This is an automated maintenance system.
Only when the AF management realized the aircraft might be overdue or introuble would the message logs and detailed messages be reviewed.
That helps to establish a target time and location where the plane MAY have had trouble.
Transoceanic aircraft loose contact almost every day some where in the world. And they restablish contact within a couple hours. Not being in contact is not an immediate emergency.
Also, before sounding an alarm about the aircraft being missing - certain search activities, checks of airports and various ATC centers have to be done.
Another item is that this happened in the middle of the night - the absolute worst time for everyone to pull in people and respond.
Lastly, one thing on Air France management minds may have been the families. If they were sure the aircraft was down, holding a release of the missing aircraft until near arrival time would allow them to gather and break the news to as large a group of families as possible at CDG.
Rdwootty From United Kingdom, joined Sep 2005, 907 posts, RR: 2
Reply 19, posted (6 years 11 months 1 week 3 days 8 hours ago) and read 80638 times:
This will make people very wary of flying until the reason is established. There was a spate of aircraft going down in the Bermuda triangle just after the 2nd world war BSSA aircraft. However I cannot remember an aircraft disappearing in the same way recently. In addition there was such a delay between the loss of contact and any reports It does seem very peculiar that the tracking systems did not know where it was. We shall find out next year may be . In the meantime passengers will be very concerned about the possibility of a "" complete" failure of all the aircraft systems.
SW733 From United States of America, joined Feb 2004, 6539 posts, RR: 8
Reply 20, posted (6 years 11 months 1 week 3 days 8 hours ago) and read 80639 times:
Quoting EXCOASA1982 (Reply 14): AF447 doesn't operate daily correct? Is that why it isn't showing up for tonight? I noticed the day light flight from Paris didn't operate today but the night time flight is still on.
An earlier poster in a previous thread mentioned that tonights flight was canceled. I have a bad feeling we will never see an AF0447 again...
Noelg From , joined Dec 1969, posts, RR:
Reply 21, posted (6 years 11 months 1 week 3 days 8 hours ago) and read 80625 times:
Quoting ThegreatRDU (Reply 8): pilot error involved maybe?...they said the flight crew was experience though
An experienced crew aren't necessarily any more immune to making mistakes, mistakes can still happen and be deadly.
However, since no facts are still known and there is still a slim chance there are survivors out there somewhere, we shouldn't speculate anything. In the meantime we just hope and pray that a miracle has happened somewhere.
Flaps30 From United States of America, joined May 2009, 311 posts, RR: 0
Reply 22, posted (6 years 11 months 1 week 3 days 8 hours ago) and read 80309 times:
With the huge amount of postings on this topic, forgive me if I am repeating this question but has anyone heard from some of the other aircraft in the same area around the same time to see if they encountered any of the supposedly severe turbulence from this line of thunderstorms and severe weather. One other question I have that sadly may never be known is why didnt the plane deviate from this weather IF their radar was working>
LipeGIG From Brazil, joined May 2005, 11519 posts, RR: 57
Reply 23, posted (6 years 11 months 1 week 3 days 8 hours ago) and read 80295 times:
Quoting Baguy (Reply 5): Even if the electrics failed, is there now back up system to control the a/c? Would it have burnt out the whole aircrafts systems? (I am assuming there probably isnt a back as its fly by wire)
We don't know what happen but for sure it's strange.
Quoting Breiz (Reply 3): According to AF, the ac had maintenance recently, level unknown
Exactly, they only mentioned the date: April 19. Seems to be a C check giving the fact the aircraft had just 4 years of service.
New York + Rio de Janeiro = One of the best combinations !