Based on the flight information you gathered for Handshake in Gray Zone Warfare, he wants you to go a step further. He knows where a certain plane crashed near Pha Lang Airfield and wants you to find the plane's flight recorder.
Too Close to the Sun // What Happens | Gray Zone Warfare GUIDE | Mission Tutorial
The information you need to find should still be on the plane. However, the exact location of the plane is unknown and Handshake will need to track it down. Unfortunately, he doesn’t have any key details to make finding the plane easier, but he does share that it’s one click away from Pha Lang Airfield, meaning you’ll need to find it on foot in Gray Zone Warfare. Be prepared to do some walking to complete What Comes Up.
You need to find the plane southeast of Pha Lang Airfield in Gray Zone Warfare. It’s a lot further away than you’re used to for tracking down targets, and requires you to venture through the forest southwest of Pha Lang City. It’s a much longer distance to travel than the other Pha Lang Airfield quests, such as Manifest Destiny and A Single Drop.
Hopefully you’ve unlocked the Golf 2 landing zone (LZ) at Pha Lang Airfield. This should shorten your journey a bit, but it’s not a huge deal if you have to use the Golf 1 LZ. The difference between the two LZs is about a minute or so. Once you land, it’s time to head through the forest and make your way to the southeast of Pha Lang Airfield. As long as you don’t get anywhere near the airfield, you shouldn’t have any NPCs bothering you on this journey. You only need to worry about other players who might be on this mission if you cross their path.