West Star Aviation receives approval for replacement waste drain valve

West Star Aviation's designed waste drain valve for Hawker jets

West Star Aviation receives FAA approval for the installation of PMA replacement waste drain valves on Hawker business jets.

West Star Aviation’s designed waste drain valve for Hawker jets

West Star Aviation has announced that it can offer a waste drain valve modification for Hawker 800, 800XP and 850XP business jets.

The new valve is manufactured and certified under FAA Parts Manufacturer Approval (PMA) and replaces the factory installed valve, which allows leakage and the potential for corrosion.

The factory installed valve on the Hawker 800/800XP/850XP aircraft requires a T-Handle tool to remove the secondary pressurisation plug or “donut”. If this plug is re-installed incorrectly or not installed at all, the opportunity for leakage is greatly increased. This presents the possibility of the user being soaked during servicing as well as a potential risk for corrosion damage.

In addition, if the plug is missing, the MMEL for the Hawker states the aircraft is restricted to unpressurized flight and a ceiling of 15,000 ft. until it is replaced.

“Most Hawker operators are familiar with the unpleasant task of draining their lavatory waste tank,” said Kendall Kreiling, Hawker programme manager, West Star Aviation.

“We can install a significantly improved version of the valve, which will eliminate the corrosion and downtime risk, as well as make the whole process much simpler for operators,” Krelling added.