I figured it was the Aux pump wiring mod. We did a bunch at may station, but I was always able to avoid it. The guys that did it always complained it was a real pain andtime consuming. I never realised it was to protect the wiring from the hand pump handle motion. I know I've never used the hand pump. I'll bet many mechanics don't even know it exsists. I really think grounding the fleet was a huge overreaction. It's not like they missed some fuselage crack inspections which could cause the plane to rip open.