airport chart
from Sergey Amielin blog posts by Tom tu154 pilot
"It's interesting to observe the location of runway thresholds, inner and outer NDB in the Google Earth. Did the crew use the runway 26 threshold raw coordinates (from the chart) with their FMS to assist with the approach? It would explain they were slightly to the south. Definitely the coordinates are not iaw WGS-84 or PZ-90.02. Did they create VNAV profile in FMS? Did they err with meters and feet, AMSL (above mean sea level), AAL (above aerodrome level) - these are some of the questions - need CVR asap."
"
One can observe divergences between the true runway course indicated on the chart 266d46m and true runway course in Google Earth 266d73m. All coordinates seem to be shifted to the east by 180-300 m, but while runway threshold coordinates are shifted 30 m to the south, the inner NDB coordinates are shifted to the north by 100 m. I wonder if and what coordinates were entered to FMS by the crew"