Did the official report really say that or is the explanation of the noise imagined by the press ?
From reading the article, I'd say that this was a statement from a passenger:
- Makkverk av Widerĝe - iTromso
While searching the internet for more information about this incident, I found an article saying that Widerĝe had decided to make modifications to the engine controls, because one of the power levers accidentily had been placed in the reverse position. This modification would be done on Widerĝe's 26 -100 og -300 models, when Bombardier could supply the necessary equipment and software:
Bygger om 26 fly - Nordland - NRK Nyheter