PANAMA CITY, July 19 (Reuters) - Panama's Copa Airlines

said on Friday that its operating systems were experiencing

difficulties due to a global cyber outage.

The airline's website showed a message stating it was

experiencing technical problems in the reservation system, with

efforts underway to fix it as soon as possible.

Passengers were advised to arrive at least four hours prior

to their flight departure due to extended check-in times, Copa

said on social media.

A software update wreaked havoc on computer systems globally

on Friday, grounding flights, forcing some broadcasters off air

and hitting services from banking to healthcare.