Accident Overview
The accident occurred at 13:31 UTC on 11 November 2018 at LPAR (Alverca do Ribatejo, Portugal). The aircraft involved was an Embraer E190-100LR with registration P4-KCJ, operated by Air Astana. The flight suffered a loss of control in flight (LOC-I) attributed to a system/component failure (non-powerplant) (SCF-NP).
Investigation Findings
The safety investigation was conducted by the Portuguese Office for the Prevention and Investigation of Accidents in Civil Aviation and Rail (GPIAAF). The report's title states that the loss of control resulted from "aileron cables reversal during maintenance actions." The investigation examined the history of the flight, injuries to persons, damage to the aircraft, personnel information, and aircraft systems, including the roll control system (ailerons) and the Aircraft Diagnostic and Maintenance System (ADMS).
Aircraft and Maintenance Context
The Embraer E190-100LR is a regional jet with a roll control system that involves aileron cables. The report's factual information covers the flight control systems, the synoptic page for flight controls, and the maintenance system. The reversal of aileron cables occurred during maintenance actions prior to the flight, leading to the loss of control.
Report Purpose
The report is published solely for accident prevention, not to apportion blame or liability. It includes factual information such as meteorological conditions, communications, and aids to navigation, all of which were documented during the investigation.