Wikipedia:Articles for deletion/2010 Karachi plane crash
Far from routine. An aircrash with 21 fatalities (do these happen on a routine basis - no they don't), no different from Aero Caribbean Flight 883|this which is on the frontpage. As you say, it fails the '''essay''' WP:AIRCRASH, which isn't a policy. This easily meets 
— NONE, NONE
Stance: keep
Cited policy: WP:GNG (Wikipedia:Notability)