Those 'circuits', in a race track pattern, look like a hold. Using my chosen app, FR24, one can see that they were flown descending from 11,000 feet down to 9,000.
www.flightradar24.com/data/flights/ls273#2fe41d1b
Obviously, the usual reason for flying a hold like that is there being a wait to land because of traffic. When we're at one of our favourite CAMC sites, Wyatt's Covert at Denham (Bucks), we can see airliners going round the Bovingdon hold for LHR.
If not 'traffic' then their may have been some other issue such as need for a runway inspection, too few controllers and folks on a break or just spacing and sequencing arrivals from different directions.
Watching Madeira airport recently, in anticipation of our upcoming visit, arriving flights sometimes hold to deconflict them with departures or because the winds are out of limits.
More locally, aircraft inbound to Brum from the SE often do a once round 'loop' which looks as though they need extra track miles to get height off before approaching the NW facing runway.
Last edited by: Bromptonaut on Sun 16 Apr 23 at 01:18
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