The Shandong Airlines passenger plane accident has once again aroused people's concern about flight safety.
On July 30, an incident occurred at Jinan Yaoqiang International Airport where a plane deviated from the runway, and the results of the investigation were revealed to spark heated discussions. According to an investigation report by the East China Regional Administration of Civil Aviation learned by the reporter, the incident also had problems such as the captain's eyesight not meeting the standard, the crew's insufficient ability to manage and control the risk of operating in heavy rainy weather at night, insufficient preparation for approach and landing, and insufficient implementation of SOP.
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On the day of the incident, it rained heavily near Jinan Airport. That night, when the aircraft was preparing to land, the captain did not prepare for the descent approach in accordance with the descent approach brief, did not set the parameters according to the standard operating procedures before using the HUD (helmet display), and the standard shouting was missing. Because the runway is not visible clearly, the left disc is still pressed and the left rudder is pushed when it is already on the left, resulting in the aircraft with a large left slope, left crossover and inertia grounding to the left side. Although the right full rudder was immediately corrected, it was no longer possible to stop the trend of the plane drifting to the left. Eventually, the plane veered left off the runway.
So the question is, as a captain, since you know that your eyesight is not up to standard, why do you fly?
According to the report, no medical or pathological toxicology was found to have been used by the three pilots to ingest alcohol or drugs. After the incident, the captain on duty was examined for his visual acuity, and his distance vision was 0.4 in the right eye, 0.6 in the left eye, -3.00 DS in the right eye and -2.75 DS in the left eye when he was wearing corrective lenses (-2.00DS in the right eye and -1.75DS in the left eye) while on duty, which did not meet the relevant standards of CCAR-67.
This means that although the captain is wearing corrective lenses, the corrected vision is still not up to the standard of flying. According to the Civil Aviation Flight Operation Manual, the qualification standard for pilots is "the best visual acuity is not less than 0.7 (i.e., the best corrected visual acuity without corrective lenses is not less than 0.7)." ”
More importantly, the HUD is used for flight navigation for a long time when the incident occurs, but the performance and applicable conditions of the HUD must comply with the provisions of "Civil Aircraft Ergon". In addition, the use of the HUD requires the implementation of the appropriate flight rules and procedures in accordance with the approach specifications and the relevant requirements for the use of the HUD. However, the report pointed out that the captain did not use the parameters specified by the HUD when preparing for landing, and did not carefully evaluate and make a go-around decision based on the weather conditions around the airport. This led directly to the accident.
A person familiar with the matter told reporters that in fact, before the runway incident, many people had reported to the East China Regional Administration of Civil Aviation about the potential safety hazards at both ends of the runway of Jinan Airport. It has been mentioned many times that the airport has recently laid a large number of tires shallow at the entrances at both ends of the runway, which poses a potential high-risk safety hazard to the safety of flight take-off and landing at the airport. The person familiar with the matter also said that the rectification notice issued by the East China Regional Administration of Civil Aviation had detailed the management of the airfield site, clearance management, bird damage and animal control, visual navigation aid facility management, prevention of vehicle and personnel runway intrusion, and non-stop flight construction management. Jinan Airport was ordered to rectify within a time limit.
However, what is more embarrassing is that although someone reported a safety hazard before the incident, the captain still flew and had an accident. This is also a wake-up call for the industry: the captain still chooses to fly despite the fact that safety hazards have been reported many times, exposing the lack of safety management in airlines.
Some aviation industry insiders told reporters that the landing of the aircraft is a very complex process, which not only relies on instruments and equipment to ensure a safe landing, but also relies on the experience and judgment of the pilot to ensure the normal operation of the aircraft's various systems. "Being able to see the runway is one of the most important indicators for pilots. Generally speaking, a pilot's unaided visual acuity needs to be above 0.7 to be considered qualified. And in bad weather, the pilot's ability to rely on instruments and equipment to ensure a safe landing will be greatly affected. ”
He further analyzed that the problems exposed by the Shandong Airlines accident are not only the problem of the captain alone. After all, in the event of an emergency, the captain needs the cooperation of other co-pilots and air traffic control to ensure a safe landing. "If there is a lack of simulation drills for emergencies and the cultivation of emergency response capabilities in ordinary training, then once a real emergency situation is encountered, it is likely to evolve into catastrophic consequences."
The person believes that the accident has sounded the alarm for the aviation industry, first, to reflect on whether there are loopholes in the pilot selection process and management; Second, it is necessary to pay attention to the psychological and physical health problems of pilots; Third, it is necessary to improve the pilot's emergency response ability and cooperative combat ability; Fourth, it is necessary to regularly inspect and maintain the aircraft's equipment, including instrument panels, engine parts, etc.; Fifth, it is necessary to strengthen the operation, maintenance, management and guidance role of airport ground staff; Sixth, it is necessary to strengthen the investigation of hidden dangers on airport runways to avoid the recurrence of such accidents.