[Peetwo]

Have we finally reached ATSB Nadir? - Part II

Hmm..why does this sound so familiar??..

UK Air Accidents Investigation Branch investigation (7/2003)

On 23 December 2000, a Beechcraft B200 aircraft departed Blackbushe, United Kingdom to Palma, Spain on a private flight. Shortly after take‑off, the aircraft was observed to bank left before colliding into a factory complex 13 seconds later, resulting in a fire. All on board were fatally injured.

An examination of the aircraft did not identify any technical issues that would have contributed to the accident. However, analysis of the cockpit voice recorder showed a reduction in one of the propeller’s rpm as the aircraft rotated, which would have led to thrust asymmetry. The investigation concluded that, it was probable a migration of a power lever due to insufficient friction being set had occurred. It was also noted that the friction control had been slackened during recent maintenance and it was possible that it was not adjusted adequately by the pilot when doing their checks prior to take-off. As a result of the investigation, a safety recommendation was made to Raytheon Aircraft Company:

The Raytheon Aircraft Company should ensure that reference to the correct adjustment of power lever friction is suitably emphasised in the Beech 200 Aircraft Operating Manual (AOM) and the consequences of insufficient adjustment are not only highlighted in the AOM but also included in the recommended Beech 200 type training syllabus.

The ATSB was unable to find any follow-up action on this recommendation recorded in the investigation site.

To begin, if you refer to the above ATSB link (from AO-2021-034) for the UK AAIB investigation report you will see that you get sent to this PDF report: https://assets.publishing.service.gov.uk...L-7451.pdf -   

The real link for the Blackbushe B200 fatal accident is - HERE or PDF version HERE.

My 1st question is, that given the obvious similarities with the Blackbushe vs YMEN DFO crash, why didn't the ATSB review the UK AAIB final report (refer pg 55-56)? Or did they but for some bizarre reason the ATSB decided to discount because it did not suit their favoured hypothesis?

Ref: https://theconversation.com/lessons-lear...sts-103834

MTF? - Yes much!