Alliance F100 at Laverton on Sep 28th 2021, runway excursion during backtrack
Last Update: January 21, 2022 / 10:09:35 GMT/Zulu time
Australia's TSB released their final report into the incident concluding the probable causes were:
- A torn boot on a universal joint probably restricted the operation of the aircraft’s nose-wheel steering system, preventing the aircraft from completing the turn on the runway.
- The flight crew decided to continue the turn, resulting in the nose-wheel leaving the runway surface.
The ATSB analysed:
The maintenance findings and the captain’s statement indicate that it’s likely the torn boot reduced the universal joint’s range of motion, restricting the operation of the aircraft’s nose-wheel steering. This restriction reduced the aircraft’s turning ability, preventing it from completing the turn on the runway. It could not be determined how or why the boot was torn.
Although runway strips are designed to reduce the risk of damage, there is no assurance that aircraft can safely manoeuvre on them. While the excursion onto the runway strip in this event did not result in aircraft damage, there was no assurance that the strip was clear of hazardous debris. However, had the aircraft remained on the runway, other aircraft would not have been able to land there safely, including delivery of ground support equipment to manoeuvre the aircraft along the runway. Nevertheless, options such as having the airport staff inspect the runway strip before turning on it were available.
Aircraft Registration Data
This article is published under license from Avherald.com. © of text by Avherald.com.
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