Investigators search for black box from small plane that crashed in Philadelphia
NTSB chair Jennifer Homendy said authorities can still complete their investigation without the recording device, but it is a critical piece and its location remains "the biggest question right now."
NTSB chair Jennifer Homendy said authorities can still complete their investigation without the recording device, but it is a critical piece and its location remains "the biggest question right now."
(Image credit: Matt Rourke)