Topic: LOT Polish Airlines SA
The FAA still needs to approve the results of the test flight and certify the battery system. Boeing's 787 Dreamliner has been grounded since mid-January because of smoldering batteries.
NTSB released new documents indicating that a battery fire on a 787 Dreamliner took an hour and 40 minutes to extinguish. The smoke reduced visibility to zero and the heat was so intense it melted a stainless steel casing for Dreamliner's lithium-ion batteries, according to the NTSB.