Auckland psychologist Grant Amos believes the disappearance of Malaysia Airlines flight MH370 in March proved more troubling to nervous passengers than last week's aviation tragedy.
He took many more inquiries about his long-established Flying Without Fear programme after the March incident, which remains a bewildering mystery, than since the same airline's flight MH17 was believed shot down by pro-Russian separatists over eastern Ukraine.
Read more of the Herald's MH17 coverage today:
MH17: Russians claim Ukrainian jet flew close to plane
MH17: Shaken cabin crew pull out of work
Claims of looting at crash site add to grief for victims' families
"We had a lot more inquiries because there's no answer to that," he said yesterday. "Whereas in this one [the loss of MH17], this is a direct act of terrorism, so therefore there's an answer there."