On Nav
Computer: to find TAS; in the AIRSPEED window put temperature (-40ºC) next to
Mach No.
Index go
to MN (0.82) on the inner main scale and read TAS next to it on the outer main
scale: 487 kts.
On the other side put
centre dot over TAS (487 kts), rotate to put wind
direction (140ºT) under the HEADING index and mark wind speed 60 kts below centre dot (over 427 kts).
Rotate to put track
(090ºT) under HEADING index and note drift is 6º Port (left).
Rotate to put track
(090ºT) under drift (5º Port).
On a heading of 095ºT the
5º Port drift gives the required track, 090ºT.
Heading 095ºT, variation
10ºW, heading 105ºM.
Groundspeed, under the
wind mark, is 446 kts and a distance of 300nm will be
covered in 40 minutes.
If the time at E is 1125
the ETA at B is
1205.