A National Transportation Safety Board investigator said both the runway lights and an automated weather-notification system at the destination airport were inoperable when the Cessna 550 plowed into the Murphy Canyon neighborhood at about 3:45 a.

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.