National Geographic's series "How to Survive a Plane Crash" cited Flight 961 as an example of why passengers must not inflate lifejackets until after exiting the plane. The pilot of Flight 961 had advised passengers to put on lifejackets but not inflate them. However, numerous panicking passengers did not heed the warning and inflated them while they were still in the fuselage. This meant that as the cabin flooded, they were pushed upward against the ceiling; making it impossible to dive and reach the exits, leaving them trapped inside the sinking fuselage.
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Ethiopian Airlines Flight 961 - Wikipedia, the free encyclopedia