Highlands and Islands Airports Ltd operates 10 airports in the North and West of Scotland.

In addition to scheduled flights the airports handle around 5,000 air ambulance and search and rescue flights a year.Air transport is vital to remote communities making it imperative that in the event of serious power failure the airports are able to continue to operate.HIA Ltd has used Metalite’s first portable runway light, the LE58, at each of its airports for many years and in 1996 the company purchased their first CALKIT™, Metalite’s trailer mounted portable runway lighting system. In 2003, as part of an ongoing commitment to meeting regulatory and safety requirements, a further three CALKIT™ trailers were acquired for use at Tiree, Stornaway and Islay airports.The CALKIT™ forms part of the company’s contingency plans to ensure that Highlands and Islands Airports can continue to function should a major power outage occur.

In 2001 Metalite supplied a CALKIT™ system with additional portable PAPIs and portable approach lights to the Civil Aviation Authority of Zimbabwe for use during the construction stage of the runway and taxiway rehabilitation project at Harare Airport, which are still in active use this day.The rehabilitation of the aircraft pavements and fixed airfield lighting at the airport involved extended periods of operational difficulties when the fixed systems were unusable. Metalite’s portable runway lighting system was specifically purchased to allow the runway to remain operational throughout the construction period and while the fixed lighting system was being replaced.CALKIT™ can support runway, taxiway and parking apron applications as well as being used to mark parts of the airfield that are closed or under construction.