Engineering business Senior slashed 12pc of its workforce in the first half of 2020 amid a wave of coronavirus job cuts in the tottering industry.
The business - which supplies components to Airbus and Boeing, as well as defence customers - axed more than 600 positions as the pandemic hit.
The redundancies came on top of 400 job losses announced in the autumn as Senior restructured after Boeing halted production of its 737 Max jets following two fatal crashes.
Senior now has about 7,200 staff worldwide. Chief executive David Squires hinted there could be more pain to come as he delivered a half-year trading update.
He said: “The coronavirus pandemic has had a profound effect on our markets and customers since March, and the impact will be with us for some time to come.
“Based on our analysis of economic and industry expert forecasts, and our customers response to those, we expect the difficult conditions to remain for many months to come.”
Shares fell 4.4pc.
A swathe of aerospace engineering companies have slashed jobs as air travel demand fell by more than 90pc at the peak of the pandemic.
Traveller numbers are expected to take at least three years to recover even under the most optimistic forecasts, forcing airlines to slash fights, lay off thousands of workers and cancel orders for new planes.
Airbus and Boeing have each cut more than 15,000 jobs as a result - more than 10pc of their workforces - and slashed aircraft production rates by about 40pc.
Job losses at big manufacturers have sent shockwaves through their supply chains, forcing smaller businesses which make components to slash staffing too. Some estimates suggest for each job lost at an aerospace “prime”, three more disappear in partner firms.
The aerospace downturn means Senior expects a 30pc fall in revenue in the first half of the year compared to the same period of 2019.
Mr Squires said that Senior is doing everything possible to protect jobs, but the the brutal market means cuts must be deeper than first hoped.
Further details of the measures being taken by Senior, which was demoted from the FTSE 250 last month and is now worth less than £250m, will be given alongside interim results in August.