# How do I calculate the aircraft's deviation from track in this exam question?

Question 22

Flight from point A to point B. NDB is point B.

• magnetic track (MKK)=245°
• magnetic variation (“delta” m)=5° W
• magnetic compass swing ( “delta” k)=3° E

When 30 km inbound to point B, your QDM-225° What is aircraft deviation from track?

1. Right of track 10km(5.4 nm) (Nk=+10km)
2. Left of track 10 km (5.4 nm) (Nk=-10km)
3. Right of track 6km(3.2 nm) (Nk=+6km)
4. Right of track 12,55km(6.7nm) (Nk=-12.5km)
• You might like to add what you've already tried and what you don't understand. People generally respond better to questions like this if they see you've already made some effort, and understanding your difficulty helps to get a better answer. – Pondlife Jul 20 '18 at 19:56
• As I understand my actual track is MT =245” and QDM is magnatic track from the station as I’m going to point B what it is QDM =225” and I have to get the track error what it is 5,4 NM . I just don’t know how I know if I’m left of Track or right of track ? – Amran Albalushi Jul 20 '18 at 20:01
• QDM is magnetic bearing from aircraft TO station – Fiddlesticks Jul 20 '18 at 20:25