The phrase "at its arrival" is correct and usable in written English.
It can be used to refer to the moment something arrives, often in contexts related to events, deliveries, or occurrences.
Example: "The package was delayed, but it was finally delivered at its arrival."
Alternatives: "upon its arrival" or "at the time of arrival".
Fall is hinting at its arrival, and already it's back to school.
It caressed faces crinkled both by middle age and wry amusement at its arrival on these Williamsburg streets.
There have been years when retail prices for wine at its arrival were lower than what futures buyers had paid two years earlier.
This is apparently a first, at least for a U.S. tour, and opinions in the music industry ranged from shock at its arrival to equal shock that ads had never been done before.
Blood and swab samples were collected from each animal at its arrival at the headquarters or at the local DWNP facility before relocation.
Whichever way you look at it, since its arrival in 2013, "Get Lucky" has caused more of a stir than many pieces of music are likely to in our lifetime.
The island's chief minister Allan Bell was at Ronaldsway for its arrival before it departed on a tour of several Manx landmarks.
Light ones are more easily deflected than heavy ones, so the two forms of carbon get separated, and when each atom reaches a detector at its expected arrival spot, it can be counted.
It is true that, on a local scale, trees can reduce the volume of water arriving in nearby streams and rivers, or at least, spread its arrival over a greater time span.
"Our performance figures … as a whole may not reflect a person's individual experience, and we continue to work hard to make improvements across the network – we don't see the industry PPM measure as a target to be achieved, but we strive to get every train to its destination at its published arrival time.
Average frame delay, defined as the average time elapsed from the generation of a data frame at a sensor node to its arrival at the sink.
