The Gallatin Airport Authority's (GAA's) Maintenance and Operations teams performed a tremendous undertaking this summer to ensure BZN's airfield remains in peak condition for the safety of aircraft and passengers. To decrease the impact on commercial operations, teams worked throughout the night to remove rubber build up from the approach end of BZN's main runway, 12-30.
Rubber build up is not uncommon, in fact, rubber is transferred onto the runway every time an aircraft lands. In a matter of seconds, aircraft tires go from zero to 140 knots, depending on the aircraft type. This drastic change of speed results in the transfer of rubber and skid to the runway surface. Over time, build up can create a slick surface, especially when wet, causing safety issues if not monitored and removed.
Throughout the year, GAA Operations staff run friction tests based on how many operations (takeoffs and landings) occur on certain runways. If friction levels drop below a specific threshold, it's time to plan the next rubber removal exercise. In order to remove the rubber, a chemical coating is applied to the runway surface where deposits have built up. After the chemical sits for a specific amount of time, runway brooms and water trucks are used to remove layers of rubber.
Maintaining the efficiency and safety of BZN's airfield is a critical and crucial challenge as we continue to see increased commercial airline traffic. It is essential that our team remains adaptable and proactive in enhancing routine maintenance both on the airfield and in the terminal.
