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May 02, 2023


This paper is focused on developing and executing a sampling plan to evaluate the Civil Aviation Audit report by involving the CADORS tool. Transport Canada is responsible for keeping all the records of aviation occurrence-related information that is going to be used in this study. The safety of the passengers is the topmost priority for all airlines (BLIŠ?ANOVÁ et al. 2021). For this reason, the paper is aiming to develop a sampling plan, selecting specific occurrence/incident details by selecting randomly and also discussing the findings of this paper. 

Sampling Results And Plan

In the following incident, the date of the occurrence is for November 2017 where the sample size is 100. It signifies that the sample chosen in this paper includes a total number of incidents that occurred during November 2017 recorded by the "Civil Aviation Daily Occurrence Reporting System (CADORS)" is 100 (, 2022). As there are a lot of occurrences that have been observed by using the CADORS tool, it is essential to select some of the CADORS number-related occurrence information for evaluation and in this study, three different samples have been chosen for evaluation. The CADORS number of these samples chosen are as follows:

Occurrence Information







Table 1: Random selection of Occurrence data






Number of CADORS reports with one or more findings

In this paper, the three samples that have been evaluated all include one or more findings regarding the Aircraft event recorder in CADORS number.


Number of CADORS reports with no findings

There are no such reports that have no findings. Therefore all the samples evaluated in this case are related to some Aircraft events because of some technical faults or manufacturing faults (MacLean, Richman & Hudak, 2018).


The CADORS report field with the most findings

The CADORS report field in this paper can be huge if all the samples are being used (Michaelis, 2017). However to discuss the details in brief three ‘CADORS’ numbers have been chosen among which the Sample with “Cadors number: 2017Q3524” has the most number of findings or the number of Aircraft Events (Rodriguez-Jimenez, 2017). This includes ‘Declared emergency/ priority, Diversion, and Hydraulic problem.


The CADORS report field with the least findings

From the incident details recorded on the CADORS website this study evaluated three different samples among them Cadors number: ‘2017P2269’ has the least number of the incident recorded. On 4th Nov 2017, a Cabin safety event occurred in WJA1875, Boing aircraft due to Crew inspection. However, no damage has been reported on the aircraft.


Fill in the blanks (boxes):

100 of the 3 reports sampled had one or more fields with information missing.

For example,

In the following spreadsheet data, the three samples show all the Aircraft related information concerning the Occurrence Date from 01-11-2017 to 30-11-2017. However, the various fields this sample has not included for the simplicity of the data and representation (Nesbit et al. 2017). These missing fields are as follows:

       Occurrence Time

       Day Or Night

       Occurrence Type

       Fatalities & Injuries

       Aerodrome Name

       Canadian Aerodrome ID

       World area

       Incident Reporting source

       Region of occurrence

       AOR Number

       TSB Occurrence no. and Class


Bliš?anová, m., keše?ová, m., & br?nová, ?. A systematic review of safety management systems (sms) in aviation with a focus on the safety level. Doi: 

Ram, A., O’Connell, J., Efthymiou, M., & Njoya, E. T. (2019). How Safe Is Safe? A Canadian Air Carriers (CAC) Safety Behavior Investigation. Journal of Air Transport Studies, 10(2), 1-31. 
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