LOTN is " MRO " with long tradition in general overhauls, revisions and upgrades of military aircrafts and helicopters as L-410, MiG-29, L-39, L-29 Mi-24 and mainly Mi-8/17/171 LOTN also providing: - repairs and revisions of high pressure air compressors, oxygen systems, high pressure hydraulic power units, atmospheric air stations, and various kind of weapons systems (incl. missile pylons, missiles, refueling and oxidizer refilling systems, SURN radars) - device and component repairs of the radiotechnical systems as (R-107, R-111, R-123, R-173) - repairs and calibration of control and measurement equipment in our own metrological laboratory with the certificate of accreditation STN EN ISO/IEC 17025:2005 issued by the Slovak National Accreditation Service - upgrading of aircraft navigation and communications systems - providing protective surface treatment of aircraft metals and painting