NTSB investigators determined the automated surface observing system, which provides airport weather conditions to pilots, was "inoperative" at the airport at the time of the accident due to "an unre...

The NTSB says there was heavy fog and the runway lights were out when the plane landed in the dark.

The incident occurred on Thursday, May 22. Around 3:45 a.m. local time, a Cesna 550 crashed in Tierrasanta, a suburban part of San Diego.