ARNK

This is prounounced "Arunk", it rhymes with "A Trunk".

Mostly used in airline reservations, it means "Arrival Unknown". For instance, if I book one segment from Dallas to Houston, then a return from San Antonio to Dallas the reservation would look like:

Segment 1: Dallas to Houston
Segment 2: ARNK
Segment 3: San Antonio to Dallas

The ARNK is needed because the airline computer checks the itinerary for continuity - the computer would ask "HEY!! Wait a minute..how is this person getting from Houston to San Antonio?" An ARNK tells the 'puter.."Don't worry about it."

More Soon.