Ever heard of not driving while angry? Well, that goes double for flying.
There are many reasons for turning into a grump and one of them is when you accidentally yank your headset off when turning your head. What you get then is a foul mood followed by some foul language. For times when your cord is too short, Pilot USA's 5 Foot Helicopter Headset Extension Cable (P/N: PA-77H) is the answer to your expletive-filled prayers.
This cable contains a U92A jack on one end as well as a U174/U plug on the opposite end. Five feet-sounds like a good length to avoid getting hung up on accidentally unplugging you ears.