Lufthansa Technik appears poised to shut down its Dublin-based engine overhaul shop Airmotive Ireland (LTAI).
The facility - which supports CFM International CFM56, International Aero Engines V2500 and Pratt & Whitney JT8D engines - has been struggling to sustain its business for a number of years, as revenues declined and new engines achieve longer run times.
While the final decision will depend on union negotiations, LHT says that it will start a "process to consider closing the company".
Discussions with the three unions SIPTU, TEEU and Unite will immediately begin.
LTAI employs around 400 staff members.
Wolfgang Mörig, the site's managing director, praised LTAI's workforce for their contributions over the years, and expressed regret that the company had reached this point.
The former Aer Lingus overhaul shop became a wholly-owned subsidiary of LHT in 1999.