Modern passenger jets are held together with thousands of nuts, bolts and rivets and on the odd occasion, even tape, it appears.
A Ryanair plane turned back to London Stansted Airport after tape used to secure the cockpit window became loose during the flight, it has been claimed.
200 passengers were on board the flight to Riga in Latvia, which diverted 20 minutes after take-off when the tape came unstuck, The Sun newspaper reported.
Anthony Neal, a 33-year old passenger on the flight said ground crew were taping up the cockpit window with what looked like “duct tape” as passengers were boarding the flight.
Shortly after take-off, the pilot said there was “damage on the windscreen” and that the flight would have to return to London Stansted.
“We were kept in the dark, and were terrified,” Neal said as he described hearing a “loud noise” in the cabin.
Ryanair insists there was no danger to passenger or crew.
An airline spokesperson said: “We do not comment on routine technical issues. All Ryanair flights operate in accordance with approved safety standards.”
The Irish Aviation Authority (IAA) concluded its investigation into the technical incident and said the special tape was being used as an extra precaution to protect a new window seal on the plane.