Just Flight has released SP1 for the DC8 10 to 40. The updated software provides a number of fixes and updates to the model, textures, cockpit and flight dynamics - full details are on the DC-8 Support page.
To get your update please log in to your Just Flight account, click on 'Your Orders' and you'll be able to download the updated DC-8 software.
Service Pack 2 is being worked on and will be released shortly - we'll email all DC-8 users as soon as this second update is available.
Full details about content for the service pack for DC-8 Jetliner Series 10 to 40 can be found here: Service Pack 1 details.