Location: Narita Airport
I was approaching Narita after a long flight. The winds changed while I was on left downwind 34L. I had to proceed upwind 34L to be on right downwind 16L. There was a Japan Air 787-9 which was taxiing to 16L since the winds were more favorable. Behind him was a 737 with the callsign Indonesia 7 7 7. The Japan Air Got on 16L and took off without incident.
Having announced over a zillion times that I was inbound Runway 16L, I was established and on final. Gear down, crosswind of 7kts, IAS of 165 kts and flaps 25 with all the lights on. The Indonesia 7 7 7 guy lined up on 34R. The opposite direction to my heading. While still announcing that I was on final 16L, the guy began his Takeoff roll. I had to go-around climbing steeply with our planes clearing each other by roughly 800ft. Dangerous right?
I pressed the report button but given that it was only two of us within Narita Airport’a vicinity and the 787 that had taken off earlier being miles away, I decided it was best to get hold of this guy in order to contact him/her. At around 0958Z, I landed safely without incident on 16L.