PPRuNe Forums - View Single Post - Jet goes down on its way to Medellin, Colombia
Old 2nd Dec 2016, 16:37
  #488 (permalink)  
Airbubba
 
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Originally Posted by Kolossi
Doesn't change the outcome, or the issue of lack of go-juice, but regarding the loss of SA:

The plate posted at thread post #37 shows the hold with northern turn at D0.6 RNG QDM 006.

However the flightradar24 path (usual caveats about this data source) in post #62 shows the path occurring noticeably south of this point. Just visually comparing landmarks/towns on the maps, the position of the VOR shown in the link in post #193 and the flight path, it looks like the turn shown in the path was around 4.5nm south of the VOR.

The plate shows the glideslope intercept as being D4.5 RNG QDR 006.
Not sure I agree with your reading of the approach plate turn point and glide path intercept but it does appear that the FR24 data shows the holding pattern several miles south of the procedure on the approach plate.

Looks like the FR24 data is from ADS-B (not MLAT) and the location should be from GPS inputs.

Are the holding instructions on the ATC recording that was recently 'leaked'? Hold at the VOR as published seems likely in this scenario.

Confusion between RNG and IMDE DME certainly seems possible with the glide slope intercept at D0.6 RNG/D9.5 IMDE and the runway waypoint [RW01] at D9.5 RNG/D0.6 IMDE.

And with an early glass cockpit in mountainous terrain, any discrepancies in the picture may be taken as a map shift when compared to the wrong raw data.
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