Early '90s, Saturday night/sunday morning F4 engine cx to be ready for airtest on the Sunday. Clearance for full engine ground runs at any time from the Staish
One phone call to ATC so they could turn the lights on the running pan and off we went for some fun
Engine started at 00:20 Sunday morning and full afterburner lit at 00:35, engine shut down at 00:45. Don't get many chances to wake everybody up and got about 40-50 complaints into Eng Ops. All wrapped up by 04:00 after a further idle run in the HAS at 02:00. Jet Noise the Sound of Freedom.