Final Report B738 (F-GZHO) vicinity Orly Paris France, 7 Feb 2018

Publication info
Author: 
BEA France
Category: 
Airworthiness, Human Factors, Loss of Control
Date of publication: 
16/11/2020

On 7 February 2018, a Boeing 737-800 experienced an airspeed mismatch during takeoff on a post maintenance positioning flight but having identified the faulty system by reference to the standby instrumentation, the intended flight was completed without further event. After the recorded defect was then signed off as “no fault found” after a failure to follow the applicable fault-finding procedure, the same happened on the next (revenue) flight but with an air turnback made. The Investigation found that the faulty sensor had been fitted at build three earlier with a contaminated component which had slowly caused sensor malfunction to develop.

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