Abstract: A distance measurement location control system for guiding a helicopter pilot to locate powerline marker ball positions with respect to longitudinal displacement. A location control assembly communicates with a microprocessor module (MCU) onboard the location control assembly. A computer device is configured to receive and transmit setup data from and to the location control assembly. A GNSS module onboard the location control assembly is electrically connected to the MCU. A display onboard the location control assembly is connected to a first serial data line from the MCU to receive GNSS data. A global satellite communication network module onboard the location control assembly is electronically coupled to a second serial data line from the MCU to provide flight information. The display operates to dynamically guide a helicopter pilot to a number of powerline ball locations in a precise manner.