Human Factors in Aerospace: Crashing of an Air Canada A320

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The course-work is about human factors the course-work includes 3 questions each question requires 500 words maximum. Referencing should be CU Harvard style referencing and in text citation. the answers should relate to the understanding of these points:
1. Demonstrate a clear understanding of the role of the human in the system
2. Analyse the role of the human in the system with regard to the manufacture and maintenance
of aircraft
3. Identify factors that can adversely affect human performance in this context
4. Describe the basic principles of good human-system integration
5. Critically evaluate a range of interventions to promote good human performance.
QUESTION ONE: Background: On 29 March 2015, an Air Canada A320 crashed while attempting to land at Halifax/Stanfield International Airport in low visibility/snowy conditions. Watch the following video: https://www.youtube.com/watch?v=suc2Y3Z9Afc and familiarise yourself with the
Question: Critically analyse the findings in the report (particularly pages 2 – 7, and 74 – 76) with reference to the HFACS model (https://www.hfacs.com/images/HFACS-Tree_0.png) , and the probable issues that contributed to the accident. Provide a well-argued analysis of the flight crew’s actions and state if, where and why any errors were made. Provide evidence to support your assertions with reference to the material in the accident report.
QUESTION TWO: Background: A team of Line Maintenance Aircraft Technicians (who undertake line maintenance and checks on aircraft on the ramp/airfield) work at a location with seasonal weather. They experience typical outside temperatures that rise to 32 degrees Celsius in the summer (with relative humidity typically between 50-70%) and fall to 6 degrees Celsius in the winter. The operatives are also exposed to aircraft noise, averaging daily at 85dB(A), with peak levels reaching 130dB(A) if they are located near a runway during a take-off.
Question: drawing on the scientific literature, how might the environmental performance shaping factors (PSFs) outlined in the case impact on the technician’s health (physically and psychologically), safety and productivity, and what could be done to mitigate the effects of these PSFs?
QUESTION THREE: An aircraft manufacturer is planning a project to design a new display to assist base technicians when completing a range of assembly tasks. What benefits can be attributed to adopting a UCD approach as opposed specifically to a traditional waterfall design process?