AT72, Trollhättan Sweden, 2018

AT72, Trollhättan Sweden, 2018

Summary

On 9 October 2018, an ATR 72-200 left the runway during a night landing at Trollhättan before regaining it undamaged and taxiing in normally. The excursion was not reported or observed except by the flight crew. The subsequent discovery of tyre mark evidence led to an Investigation which concluded that the cause of the excursion had been failure of the left seat pilot to adequately deflect the ailerons into wind on routinely taking over control from the other pilot after landing because there was no steering tiller on the right. The non-reporting was considered indicative of the operator’s dysfunctional SMS.

Description

On 9 October 2018, an ATR 72-200 (YL-RAI) being operated by RAF-AVIA on an international cargo flight from Stettin to Trollhättan, which was a line training sector for the left seat pilot, briefly left the runway during landing in night VMC at destination before regaining it undamaged and completing the landing without further event. The excursion was not reported to anyone by the crew and was not otherwise detected until evidence of it, including damage to a runway edge light, was discovered two days later, prompting further local investigation.

Investigation

Based on the initial findings of the local investigation, an Investigation was carried out by the Swedish Accident Investigation Authority (SHK). The delay to the start of this Investigation meant that all relevant recorded flight data had been overwritten.

It was noted that the flight was a line training flight for a pilot undergoing training for promotion to Captain on type. The 55 year-old Training Captain in command had a total of 9,300 flying hours which included 198 hours on type and was occupying the right seat and designated as PF for the investigated flight. The 49 year-old Captain under training had a total of 9,200 flying hours which included 91 hours (and 42 landings) on type.

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