Phil Wells, an engineering technician, appeared on the second episode of Britain's Busiest Airport.
The episode, which aired on Thursday (June 11), was broadly themed around aircraft turnaround.
Mr Wells, 29, was seen racing against the clock to fix an aeroplane jetty floodlight.
The documentary narrator said: “There is a danger of throwing Heathrow out of sync if a job is done wrong, costing thousands of pounds.”
Mr Wells, who thrives off the pressure of his job, described a typical day at the airport: “It’s quite a wide array of things that we do. But during the day we’re more reactive... If anything breaks, we try to fix it or repair it or do the necessary to make it safe.
“I work in terminals myself so will fix anything inside the buildings, like fixtures and fittings, lifts escalators, any signs and electricals.”
Mr Wells, who has lived in West Drayton nearly all his life, enjoyed being filmed at work.
He said: “It’s been a bit surreal, it's been odd having to look into a camera, and explain exactly what you’re doing at the time of doing it, it was very strange.
“After a couple of days, I started to enjoy it, and it was quite nice, but very out of the ordinary for me!”
Mr Wells has been working at the airport for 12 years after joining Heathrow's apprenticeship scheme.
He added: “I’ve always wanted to get my hands dirty and do something mechanical. That’s what drew me to it. My mum got me an application form, she works at the airport herself in a different department.
“I applied for the job got asked to come for an interview and yeah…went well so here I am!”
You can catch Phil Wells on ITV player or check out the last episode in the series on June 18 at 9pm.