Dear lomapaeso,
It was indeed: "Icing condition" during the last 10 minutes of BA38s career.
Ground temperature was +11 degrees C. and its RR engines flew in and out of broken clouds.
Boeings definition of "Icing condition":
Anytime the OAT (temperature) is below +10 degrees C. in moist air (dew point within 3 degrees C.)
And the higher the temperature, the more severe is the icing condition, due to the higher cloud water contend.
Read more about it here:
www.whistleblowers.dk
Oluf Husted