### Causes - Release mechanism failure - Incorrect [[Launch Equipment#Tow Rings]] used - Towline tangled on some part of the aircraft ### Glider towhook release failure - Notify the tow pilot using [[Visual Signals]], maintain [[Maintaining Tow Positions#High Tow Position]] - Tow pilot should tow the glider over the airport and pull the towplane release; attempt to pull the glider release again when towline tension has been relieved - Glider release **should** automatically back-release as the towline falls below the glider; to mitigate risk of towline remaining attached to the glider, follow procedure for [[Towline Break#Landing with towline attached]] ### Glider and towplane release failure The situation must be confirmed by both pilots using [[Visual Signals]]. There are 2 possible courses of action: - Towplane and glider land together; glider descends into [[Maintaining Tow Positions#Low Tow Position]], touches down first, and uses dive brakes and wheel brakes as needed to avoid overtaking the towplane on the ground - Intentional [[Towline Break]] within gliding distance of the airport; glider climbs, abruptly dives to induce [[Slack Line]], then fully opens spoilers/dive brakes. Follow procedure for [[Towline Break#Landing with towline attached]]