Plain English Meaning
This is a misspelling in the handbook figure. It should read 'Departure/Arrival' — the section of a flight planning form where you write down the airport you're leaving from and the airport you're flying to.
Full Definition
A typographical error appearing in Figure 10-19 of the Instrument Flying Handbook. The intended phrase is 'Departure/Arrival,' referring to the combined departure and arrival information block on an IFR flight log or planning form, where a pilot records the departure airport and the arrival (destination) airport along with associated planning data such as times, fuel, and clearances.
Context Anchor
Seen in Instrument Flying Handbook Figure 10-19 as a label connected with managing departure and arrival information during an instrument flight.