Markham and Sergeant Stackhouse were trapped and demolecularized inside the Stargate orbiting the Wraith homeworld when their Puddle Jumper became lodged inside the ring. Only after the rear compartment was exposed to space did the Jumper achieve enough inertia to push itself through the Stargate and back to Atlantis. Markham reappeared on the other side, intact.
Thirty Eight Minutes - White-knuckled, Markham pilots the Puddle Jumper back to Atlantis from the Wraith homeworld -- but encounters an unexpected 38 minute delay.
The Defiant One - Markham pilots a Puddle Jumper en route to another planet in the Lantean System, hoping to provide backup to Major Sheppard's science team.
The Brotherhood - Markham is killed while defending Atlantis in a Puddle Jumper.