Roland Perry wrote:
[Michael Hoffman]:
In the airlines' dreams, the plane *will* only be landing momentarily.
The most efficient airlines have turnarounds of 30 min or less.

Odd then that I've heard the expression most on full service airlines
with 4 hr turnarounds.

I wasn't being entirely serious. The OED describes the usage of
"momentarily" you object to as "Chiefly N. Amer." but one of the
quotations is from Evelyn Waugh.
--
Michael Hoffman