Professional Helicopter Services did not have a calibration schedule for their passenger scales, which were under-reading. This increased the risk of their helicopters not achieving their expected take-off performance.
A calibration schedule introduced by Professional Helicopter Services addresses the safety issue risk for their other bases in addition to their Uluru Base, where the accident occurred.
Professional Helicopter Services have advised that they introduced a quarterly calibration schedule for their passenger scales at all their bases. These schedules will be tracked in their safety management system database.
