Investigators face a race against time to find the "black boxes" from Malaysia Airlines Flight 370 before batteries powering the "pings" from their transponders run out in approximately 19 days’ time.
Five military aircraft - including a U.S. Navy P-8A Poseidon - battled low cloud, bad weather and poor visibility Thursday as they scoured the inhospitable ocean zone where the objects were seen.
The air search was finally suspended when darkness fell across the area at about 8 a.m. ET and isn't due to resume until 3 p.m. ET.
One of the five aircraft - an Australian P-3 Orion - flew as low as 100 feet above the southern Indian Ocean surface but none of the planes found any sign of the debris.
Source : http://www.nbcnews.com