Newsgroups: *rec.music.classical.guitar* From: *Rob Balsamo @yahoo.com> wrote: > Since my last post I have learned that the definitions > of FDR subframes and frames are historical relics of a > bygone era, so there is no particular reason to assume > the FD-2100's writes into flash memory are buffered at > the subframe or frame level. > Flash memory can be written only in block units, which > implies buffering to a multiple of the block size, but > I do not know the block size for the flash memory used > in the FD-2100, and typical block sizes vary widely > depending on the type of flash memory. I also do not > know the write time for that flash memory used in the > FD-2100. That information would be useful. > Rob Balsamo wrote: > > Do you know what signal "generated" to "being recorded" > > means? If not... i'll help you. It means the buffer cannot exceed 0.5 > > seconds. > Returning the favor: You probably meant to say that > the buffer size divided by the recording rate cannot > exceed 0.5 seconds. > You probably think that would establish a worst-case > recording latency of 0.5 seconds, but it doesn't. To > calculate the worst-case recording latency, you would > have to add the full recording interval and write time > to that 0.5 seconds. I only read up to this part as its clear you still dont understand. Will, I'll keep it really simple for you. The time from when signal is generated (ie. when the altimeter needle moved from the Air Data Computer, When the control yoke is moved, when a button is pushed), till the time it is recorded in the CSMU ("The Pig") cannot exceed 0.5 seconds. If you are still confused, call L3 Communication as we have. This means buffer, latency, write time, everything in between, cannot exceed 0.5 seconds. To put this in perspective and the reason for ED-55, TSO-124, what good is a FDR which may not record its cruicial last seconds of flight? FDR's save lives Will, pilots train based on them during reccurent training. The fact the FDR recorded 1.5 DME off DCA VOR, and the fact the FDR recorded 2 more seconds worth of data (read this part again if you need too, some at 8 hz per second) AFTER 1.5 DME was recorded, and the fact the NTSB plot places the aircraft impact time based on Radar, FDR and ATC Transcripts at 09:37:45 confirms that Minimal Operational Performance Standards for FDR Systems were met in this case. If you wish to believe Farmer, you are certainly entitled, but as i said, dont be surprised if you see his whole blog disappear as precedent is set for such an occassion. Farmer makes ALOT of mistakes, has never stepped into a cockpit, and has not consulted with any Aircraft Accident Investigator or FDR Expert (although he says he has consulted with Dennis Cimino, of which im surprised Farmer still 'clings' to 6 seconds loss of data). Will, at worst case scenario, if you want to use excuse, 1.5 DME was recorded, period.This means the FDR cannot be missing more than 3.5 seconds (south path) as seen in the short video i presented. If the last altitudes were recorded 3.5 seconds away from the pentagon wall (which we know it wasnt based on the above), the aircraft is still too high. Period. Finally, If the aircraft is missing more than 0.5 seconds of data... - Why did the NTSB plot the data up till time of impact? Do you and/or Farmer know more than the NTSB, Aircraft Accident Investigators, The manufacturer of the FDR? - If the FDR is missing up to 6 seconds of data, why didnt the NTSB stop the plot at 09:37:39? - If you feel the FDR is missing up to 6 seconds, what is your theory for power loss at 6 seconds away from the wall? Did Hani pull the breaker while accelerating the aircraft 100 knots above it max operating speed, fly Nap of the Earth, without having any time in type? Not to mention he couldnt cvontrol a 172 at 65 knots? (matter of fact, Ed went into more detail about "power loss" on the phone. When power is terminated to the FDR, it is still recording due to the fact capacitors within the FDR still hold power for another 0.5-1 second.) - How can the FDR record 1.5 DME off DCA VOR and then record 2 seconds more data for ALL parameters after 1.5 DME was recorded? Bottom line, the NTSB states they want everything as "accurate as possible" when distributing information through the Freedom Of Information Act. The NTSB accounts for one error in the clock annotation (EDT/UTC). If you feel there are more errors in the NTSB plot/data, do you condone error filled data being distributed to the American public through the FOIA without a disclaimer/notation for such errors? If not, have you contacted the FBI/NTSB to address your concerns? Will, if you would like to have an on air debate regarding this information, and/or any debate recorded regarding the FDR, please email us to set up the details. So far, Popular Mechanics, the NTSB, FBI, Farmer, The janitor you used as "other investigator", all the anonymous so-called FDR "experts" from "duh-bunker" sites who claim there can be no more than 2 seconds missing, have refused. You'll be the first. We look forward to your email. Forgive me if i dont reply to further correspondence from you on this forum as it is clear you still have not done your homework, have an extreme bias for the govt story which leads you to believe a janitor (other investigators) and someone who never stepped into a cockpit (Farmer) over these people... http://pilotsfor911truth.org/core http://patriotsquestion911.com/pilots http://ntsb.gov http://www.l-3com.com/EDI/crashsurvivable.htm Regards, Rob