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.

Investigators are piecing together the final moments before a small private jet crashed into a San Diego neighborhood, killing all passengers on board.

The airport also had filed a notice to pilots called a Notam, informing them that one of the runways had experienced an issue with the lighting system that guides landing planes.