As a young Air Force helicopter crew chief, Norman Serrano found that the vibration of a helicopter increased more and more just before it broke down. Serrano concluded that the helicopter rotor blades should be adjusted or repaired as soon as they begin to vibrate.
He focused his efforts on dynamically balancing spinning subsystems within the helicopter platform, including the main rotor and tail rotor systems. It took the average mechanic a few weeks to dynamically balance these systems, but Serrano developed techniques that took him only a few hours and produced much smoother results. He soon discovered that approximately 90 percent of helicopter maintenance issues are the result of vibration. His motto became, “No more vibration-related accidents or deaths.”