Cryptic crossword No 3,344

Across

1. The German followed the Italian in an aircraft. (6)
2. A half century results in a draw in the last test match. (8)
3. Apparently Big Ears' friend agreed. (6)
4. Associate to skinflint made a device for producing Scotch mist. (8)
5. Absurd. Drop ya burlesque. (6)
6. Uninspiring speed trials at Newmarket. (4-6)
7. Liquid saliva serves a purpose. (6)
8. Might be full at The Oval. (4)
9. Singing group without hearts produced coconut fibre. (4)
10. Chaotic Diego clan wiped out. (9)
11. Radioactive element is powerful when lacking gravity, but with the addition of titanium, uranium and mass. (9)
12. Disagreement when he expectorated. (4)
13. In the centre of Tromso, Dagmar found a drink. (4)
14. It's not unusual for queer queer to be written in incomplete typeface. (8)
15. Those confused finding themselves inside a backward sailor are dimmer. (8)
16. Ganja arrives in the Pampas. (10)

Down

1. I found my relative in the disco using drugs. (6)
2. Latin ant on the floor. (7)
3. Mass times the square of the speed of light equals 6 lights. (6)
4. Early populists help with construction projects. (9)
5. Accumulation of snow in front of the driver is also found on the beach. (9)
6. Unhappy about the preparations being back to front. (5)
7. Food gathered by guinea psychoquacks immortalised by Burns. (5)
8. Jumbled attics to stay, apparently. (6)
9. Foreigner not in country with queen. (9)
10. A person with short hair didn't display cavalier attitudes. (9)
11. Drink singer used found in schools. (7)
12. Grendel's mother to thrive without PR. (6)
13. I stand in the middle of the bridge in Avignon and direct. (5)
14. Carry Frenchman to carved artwork. (5)