service life

Much of the CalMac fleet is now beyond its expected service life.

City officials have been working for over a year on a renewal project for the iconic landmark, after a 2018 study determined it was at the end of its service life.

It added: "This analysis has validated that these issues do not present any safety concerns and the aircraft will maintain its service life over several decades."

The service life of these vessels is typically 20-30 years.

"For instance, the service life of perovskite LEDs needs to be improved. At present, the screen only works for a few hours before the material becomes unstable, and the LEDs go out," he says.