1: Throw out faulty nib (3)
3: Risk of pole womans end being upset after handy beer (11)
9: Derive the component of metal fastener (5)
10: I, astride colt's mother with Donny's sister (5)
11: Fish spawn upstream in little orifices (3)
12: Pilot sometimes sounded more irritated (5)
14: Top card? Excellent! (3)
15: Archipelagos concluded thus in Nigeria (5)
17: French ladies made Sam mad (7)
19: A fool, for instance, may use a very good spear (7)
20: Prolong Austins suffering (7)
21: Outfit wins Tet Offensive (7)
22: Relative clause ultimately adopted by the kind (5)
23: Emergency room stocks one sensitive organ (3)
24: Maxim is a little man (5)
26: Choose to take the top off (3)
27: A bad back not yet eliminated (5)
29: Backroom houses last component of engine (5)
30: Fashion term heartless: Feeling up Blossom (6-2-3)
31: Raw material for Swedish coins (3)