A Titan Airways jet made an emergency landing at Gatwick when one of its engines caught fire and the other stalled after fuel was contaminated by a mechanic, a report has revealed.
Investigators found disaster may only have been averted near the Sussex airport as it was flying light with no passengers and just seven crew, in quiet airspace and in clear conditions on February 26 last year.
The report by the Air Accidents Investigation Branch said that an engineer had added 38 times too much biocide, an anti-bacterial chemical, to fuel tanks before the flight because he did not understand that ppm meant parts per million .