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Search: Posts Made By: tdracer
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Forum: Rumours & News
8th May 2014, 19:34
Replies: 11,831
Views: 24,198,563
Posted By tdracer

Thank you olasek. This bears repeating...

Thank you olasek. This bears repeating (repeatedly). Anyone who is involved in the investigation is under an effective gag order (been there, experienced that). All public release of information...
Forum: Rumours & News
25th Apr 2014, 04:07
Replies: 11,831
Views: 24,198,563
Posted By tdracer

We have precious little data on controlled...

We have precious little data on controlled ditching of a jet airliner with high bypass wing mounted engines. Basically, the only 'good' data point is Sully's A320 on the Hudson. Ethiopian is not a...
Forum: Rumours & News
11th Apr 2014, 17:56
Replies: 11,831
Views: 24,198,563
Posted By tdracer

Just so you know how much data we're talking...

Just so you know how much data we're talking about, I did a quick check of a DFDR file I have from a six hour flight (I was investigating a strange engine anomaly on the flight). Six hour flight is...
Forum: Rumours & News
8th Apr 2014, 14:48
Replies: 11,831
Views: 24,198,563
Posted By tdracer

Yep, automatic if both engines fail, with a...

Yep, automatic if both engines fail, with a manual override 'just in case'. IIRC, it'll also automatically try to start the APU, but if the fuel is exhausted that won't help...
Forum: Rumours & News
8th Apr 2014, 14:43
Replies: 11,831
Views: 24,198,563
Posted By tdracer

Nope, not even close. IDG and VSCF will drop off...

Nope, not even close. IDG and VSCF will drop off line at ~50% N3, windmill N3 is around 15-20% even at a high airspeed. At 20% N3, the FADEC will still be powered and there will be some hydraulic...
Forum: Rumours & News
8th Apr 2014, 02:37
Replies: 11,831
Views: 24,198,563
Posted By tdracer

OK, assuming for a minute that these pings pan...

OK, assuming for a minute that these pings pan out, could someone with real knowledge of the subject give a rough number for how long it will take to:


1) Triangulate the location to a limited...
Forum: Rumours & News
31st Mar 2014, 14:32
Replies: 11,831
Views: 24,198,563
Posted By tdracer

According to a discussion on the radio while I...

According to a discussion on the radio while I was driving in this morning, the US had volunteered to assist in the search shortly after the aircraft went missing, but were politely declined since...
Forum: Rumours & News
18th Mar 2014, 18:09
Replies: 11,831
Views: 24,198,563
Posted By tdracer

IF they were at 5k in an effort to dodge radar,...

IF they were at 5k in an effort to dodge radar, as soon as they were a few hundred miles into the Indian Ocean, they could easily climb back to normal cruise altitudes to maximize the range with...
Forum: Rumours & News
13th Mar 2014, 23:33
Replies: 11,831
Views: 24,198,563
Posted By tdracer

Correction - Boeing and RR declined to comment on...

Correction - Boeing and RR declined to comment on the reports that no data was received. Which is per process - Boeing and RR are effectively under a gag order and will not comment on the...
Forum: Rumours & News
13th Mar 2014, 23:02
Replies: 11,831
Views: 24,198,563
Posted By tdracer

No FADEC (at least on Boeing) has it's own...

No FADEC (at least on Boeing) has it's own downlink capability. Engine data is sent to the airplane over ARINC 429 (in the case of the 777) where other systems (e.g. ACARS) downlink and/or store the...
Forum: Rumours & News
13th Mar 2014, 19:20
Replies: 11,831
Views: 24,198,563
Posted By tdracer

I wouldn't read too much into the lack of...

I wouldn't read too much into the lack of response from Boeing or RR. During an accident investigation, the manufactures are effectively under a gag order. All official communications are to come...
Forum: Rumours & News
13th Mar 2014, 00:59
Replies: 11,831
Views: 24,198,563
Posted By tdracer

If you were correct there would be no need for...

If you were correct there would be no need for this FAA special directive...
Forum: Rumours & News
11th Mar 2014, 20:48
Replies: 11,831
Views: 24,198,563
Posted By tdracer

Not sure which operators you're referring too,...

Not sure which operators you're referring too, but the US based airborne WiFi I'm familiar with (Go-Go - used by Delta and Alaska among others) is ground based, not satellite based. It's also quite...
Forum: Rumours & News
11th Mar 2014, 15:37
Replies: 11,831
Views: 24,198,563
Posted By tdracer

ACARS

There seems to be general perception here that ACARS transmissions are more or less continuous - that is NOT the case.

Each ACARS message cost money - not much - but if an aircraft is sending out...
Forum: Rumours & News
10th Mar 2014, 23:30
Replies: 11,831
Views: 24,198,563
Posted By tdracer

If they don't find anything within 24 more hours,...

If they don't find anything within 24 more hours, I think it may be time to step back and consider possibilities other than a crash into the ocean. The area of ocean where the 777 is reported to...
Showing results 1 to 15 of 15


 
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