After taking a dripstick measurement, Pearson converted the reading from centimetres to litres to kilograms. However, he did his calculation with the density of jet fuel in pounds/litre instead of kilograms/litre. Since the FQIS was not operational, he entered the reading into the flight management computer (FMC), which tracked the amount of fuel remaining in kilograms. The airplane flew to Ottawa without incident, where another dripstick measurement was taken and converted using the density in pounds/litre. Since the aircraft appeared to have enough fuel to reach Edmonton, no fuel was loaded at Ottawa.