San Diego’s Montgomery-Gibbs Executive Airport experienced a power surge on Thursday that knocked out the weather alert system and the tarmac’s runway lights before the Cessna 550 Citation’s failed landing killed six on Thursday, according to the National Transportation Safety Board.

Federal investigators on Friday offered an update on their probe into why a Cessna 550 crashed in Murphy Canyon, killing all aboard.

In the dark stillness of night, a quiet, tree-lined street in a San Diego neighborhood was plunged into tragedy when a plane clipped a main power line and crashed onto the street — turning cars into fireballs and sending hundreds of residents fleeing in a haze of smoke and confusion.

Una avioneta se estrelló en medio de una densa niebla en un barrio de Tierrasanta la madrugada del jueves, presumiblemente matando a las seis personas a bordo, hiriendo a ocho en tierra e incendiando varios coches y viviendas en un complejo militar.