Birmingham based engineering arm of collapsed airline Monarch has gone bust with the loss of 408 jobs.
Monarch Aircraft Engineering Limited (MAEL) is "unsustainable in its present form", administrators KPMG said.
Attempts to restructure the firm - taken over in October by Greybull Capital - had failed, KPMG confirmed.
The union Unite accused Luton airport-based MAEL of failing to consult employees before the collapse and said it was taking legal action.
Airline Monarch, which was also owned by Greybull, collapsed in 2017, leading to more than 1,800 workers being made redundant and the flights and holidays of about 860,000 people being cancelled.
"Following the administration of other Monarch entities in 2017, MAEL sought to build its customer base to replace the loss of business from the former airline," David Pike, restructuring partner at KPMG, said.
Source: BBC News
