Re your interest in the AI report of 1995, I only have a PDF that someone kindly sent me. If you PM me with an e-mail address, I will send it to you.
I see that you and AZR have been using the last (data) column of Tome 1 for "INC" (AoA) data.
There are other "INCIDENCE" (AoA) data in Tome 6. On the line for each second are recorded two values, each to one place of decimals; unlike the single column you are using. It is unclear to me at the moment whether the 2 values are from different sources (e.g., FAC1 and FAC2), or if they represent 2 samples per second from a single source. I favour the former explanation, because next to them are twin values of what appear to be sideslip, which is another parameter handled by the FACs.
Using UTC 12:45:39
** as the "t" reference, here are the decoded AoA values, from Tomes 1 and 6 respectively, for the last 20 seconds of flight:
t -19 +08 U08.3 U07.2
t -18 +08 U07.6 U08.2
t -17 +09 U09.3 U09.3
t -16 +09 U09.0 U08.9
t -15 +08 U08.4 U07.9
t -14 +09 U08.9 U10.6
t -13 +11 U11.3 U10.8
t -12 +12 U11.6 U11.5
t -11 +11 U10.9 U10.1
t -10 +10 U09.7 U11.4
t -09 +12 U12.1 U13.1
t -08 +14 U13.5 U13.9
t -07 +14 U13.9 U13.1
t -06 +13 U13.1 U12.7
t -05 +14 U14.4 U14.4
t -04 +15 U15.3 U14.4
t -03 +14 U14.3 U13.8
t -02 +14 U13.8 U15.6
t -01 +15 U15.1 U14.9
t -00 +15 U15.3 D73.8
t +01 -00 D00.2 D00.2
** (i.e., elapsed time 335.0 seconds in the second column)
Can anyone inform us of the precise sources of the above AoAs, and if the Tome 6 pairs of data are sequential, or from two different sources simultaneously?
HN39,
I agree that the sequential times in seconds in column 2 are elapsed times from an arbitrary point, which may be the selection of TOGA thrust at the start of the T/O run. (The report states that the a/c was airborne at "12:41", and that the R/H turn was commenced during the second which followed.)
Perhaps the BEA could supply us with pages 1 - 6 of the DFDR print-outs...
Quote from Owain Glyndwr:
I must admit that the debate has been to a much higher standard than I feared it might be.
Praise indeed...
