Several news sources (here, or here) report that Norway wants to terminate its contract with NH Industries and they want to return their delivered NH-90 helicopters. The citation goes as follows:

"“Regrettably we have reached the conclusion that no matter how many hours our technicians work, and how many parts we order, it will never make the NH90 capable of to meeting the requirements of the Norwegian Armed Forces."

What exactly are the requirements that the NH-90 is unable to reach? To clarify, I am interested in which exact technical details/requirements are violated that leads norway to conclude that "it will never make the NH90 capable of meeting the requirements"

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    $\begingroup$ Is this really on topic here? $\endgroup$
    – Federico
    Commented Jun 10, 2022 at 10:20
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    $\begingroup$ The help center states: "Aviation Stack Exchange is a site for pilots, engineers, controllers, mechanics, and aviation enthusiasts. If you have a question about [...] Aircraft Design and Manufacture." I would argue that this is a question about the design (because of the requirements). Dont you agree? $\endgroup$
    – U_flow
    Commented Jun 10, 2022 at 10:31
  • $\begingroup$ No, I do not agree that this is a question about aircraft design, I really struggle to see how it can be seen in that perspective $\endgroup$
    – Federico
    Commented Jun 10, 2022 at 11:12
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    $\begingroup$ Well I do ask about the exact set of requirements. I assumed that there are a quantifiable number of requirements which cannot be reached (e.g. Door too small, or landing gear fails). Perhaps you think that this question goes too much into politics? If so I would respond that obviously a certain political aspect is involved in the discussion, but I am interested in the exact technical reasons for rejecting the NH-90. Therefore to the best of my knowledge the question is not oppinion based and thus on topic. If I am mistaken, please indicate what the exact problem is. $\endgroup$
    – U_flow
    Commented Jun 10, 2022 at 12:06
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    $\begingroup$ @U_flow - Why should there be similarities? Different manufacturers, different missions, different capabilities, different aircraft...completely different problems. $\endgroup$
    – WPNSGuy
    Commented Jun 10, 2022 at 17:40

1 Answer 1


What exactly are the requirements that the NH-90 is unable to reach?

It appears delivery and availability. Not everything is a "design" issue.

It says right in your second link:

Norway’s acquisition of the NH90 began in 2001, with 14 helicopters for Coast Guard and Anti-Submarine Warfare duties originally slated for delivery by the end of 2008. As of today, only eight have been delivered in a fully operational configuration. The fleet is currently required to provide 3.900 flight hours annually but in recent years it has averaged only about 700 hours.

Over a decade late, only 8 of 14 aircraft contracted for, and only 700 of the required 3,900 annual flight hours.

  • $\begingroup$ In December 2021 Australia announced early retirement for its 47 NH90s, which entered service in 2014, blaming "unreliability” and cost. $\endgroup$ Commented Jun 11, 2022 at 10:32
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    $\begingroup$ If they have the same problems as the Dutch Navy, the helicopters are extremely unreliable and need far more than the originally estimated maintenance hours and waiting for spare parts. $\endgroup$
    – jwenting
    Commented Jun 13, 2022 at 7:08

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