Localize an app in French

We have an app for the airport industry. It is currently available in English, German, and Swedish. We need it localized to French. There are 425 terms to translate, ranging from simple words ("Cancel") to longer phrases (a single sentence). We use POEditor.com for the translation interface. There are several technical terms specific to airports which may require minor research or, potentially, reaching out to our (French Canadian) customer for guidance.