B734, vicinity Auckland, New Zealand, 2022

B734, vicinity Auckland, New Zealand, 2022

Summary

On 7 June 2022, when a Boeing 737-400F arrived at Auckland after a night cargo flight, a main fuel tank low pressure warning occurred because centre tank fuel transfer had been inadvertently left off prior to takeoff. The aircraft ahead had made two unsuccessful approaches due to fog before diverting. There would have been insufficient main tank fuel remaining to go around and complete another approach or divert without fuel exhaustion becoming “likely." Also, the flight’s selected alternate airports did not meet required weather minima due to errors on the part of both the flight crew and operator.

Description

On 7 June 2022, when a Boeing 737-400F (ZK-TLL) operated by Airwork on a scheduled night freight service from Sydney to Auckland was used for line training overseen by a training captain. After landing at Auckland, a fuel low pressure warning indicated that only minimal fuel remained in the wing tanks because the crew had forgotten to select the centre tank prior to takeoff and did not notice the oversight during the flight. It was also found that despite adverse forecast meteorological conditions at both Auckland and at nominated alternates resulting in a requirement to operate the flight in accordance with the applicable ‘Extended Diversion Time Operations’ (EDTO), this had not happened.

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