Go to the JAL Maintenance Center 1 Building and show your reservation to the reception. They will give you a pass. You can arrive 30 min. before the tour starts. Use the time to see this Sky Museum.

The tour pass is on a JAL cell phone neck strap that you can keep.
*Note that if you take the tour and take pictures and want to post pictures online, you will need JAL's approval. They don't allow photos of JAL personnel and tour guests in online photos. All these photos have been approved by JAL for posting here.