Do you have a question? For information about legislation and regulations, consult the product pages, visit wetten.overheid.nl or go to the page 'Frequently asked questions'. Still have a question or do you have a comment or suggestion? Please complete the contact form below.
Please check the complaint regulation if you are dissatisfied with the application process, the quality of your product or if you feel that we didn't properly serve you.
On the Current notifications page, you will find information about any maintenance work and malfunctions on our websites or portals.
Please note: The services related to the certification of pilots (FCL), air navigation service providers (ATCO, FISO and ASO) and aircraft maintenance engineers (AML) in the Netherlands have been transferred from Kiwa Register to the Civil Aviation Authority the Netherlands (CAA NL) on 1 June 2025. Go to the website of CAA NL for more information, questions or complaints on your existing application or starting a new application.
You can reach us by phone from Monday through Friday between 8:30 a.m. and 5 p.m. via: +31 (0)88-998 48 88 (local charges apply).
Please note: We will not be available by telephone on Thursday 25 and Friday 26 December 2025 and on Thursday 1 and Friday 2 January 2026.
Our customer service does not provide any information about personal files or legislation and regulations.
On the page Current notifications you will find information about any maintenance or service disruptions on our website.
Our service desk is open on working days by appointment from 9:00 a.m. to 4:00 p.m. To make an appointment, please contact our customer service department by phone on: +31 (0)88-998 48 88 (local charges apply).
Please note: The visiting address will be closed from Thursday 25 December 2025 to Friday 2 January 2026.
If you wish to submit documents, you can use the letterbox.
Kiwa Register
Sir Winston Churchilllaan 273
2288 EA Rijswijk (Zuid-Holland)
Kiwa Register
Postbus 4
2280 AA Rijswijk (Zuid-Holland)