"A mother accidentally smothered her baby daughter to death on a flight after she fell asleep while breastfeeding... Crew on the United Airlines jet were alerted by the 29-year-old mother's screams. A doctor travelling on the plane tried unsuccessfully to revive the baby."
Breastfeeding mum smothers baby on jet after falling asleep | Mail Online

Quite sad

Its always important to remain alert when doing important things like this!