Cryptic crossword No 3,346

Across

1. Lightly touch wrong bird (6)
2. Tech giant lenders' equities initially dropped, increase in value (8)
3. Sign of rank and sad relations (4,5)
4. Score in Delft possibly (9)
5. Light, noiseless landing by bird (7)
6. Billy not starting dinner for one made from crushed cereal (7)
7. Vehicle alarms tender types (10)
8. Eyesore seen in Belfast yesterday (4)
9. Manage to make mistakes and start to suffer as a gofer does (3,7)
10. Vagabond terrified leaving Ireland upset (7)
11. Good! French surround desperate Attila's regiment (9)
12. Pen old PM left around lost, finally gone (4,3)
13. Packed box, bad luck (9)
14. Lady fortune is ineffective (4,4)
15. Hoarder? Here it is in black and white (6)
16. Foodstuff (4)

Down

1. Befuddled Chief Executive Officer with a brain lacking oxygen (9)
2. Root hailed revolutionary (7)
3. Theoretically Space and time go on never ending -I'm not sure (9)
4. Boy showing signs of varicella safely secured (9)
5. See 11a
6. Reject small pint vessel (5)
7. Renamed bird left in grass (8)
8. Expels former cricketer? (7)
9. The Queen Vic opening in storyline (7)
10. Flooded, I'm sad, left out and destitute initially (6)
11. In river, men take time for acclimatisation (9)
12. Andean native in mountain area and California (6)
13. See 26a
14. Fool starts to take what Is really poisonous (5)
15. Payment from former partner and former VP reported (7)
16. Actor in a park directed and talked incessantly (8)