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Modify data dictionary and other necessary
modification regarding the accident/incident
reporting system
5. Populate new data element for new entries
to the identified system
Record the occurrence category for new
entries to the accident/incident reporting
system
Adopting Taxonomies to New Systems
An organization is encouraged to adopt a CICTT taxonomy at the time it creates or redesigns a
system. The CICTT recommends that the organization follow the steps below is such instances
(the Phase of Flight Definitions is used as an example):
Step Example: Phase of Flight Definitions
1. Determine the new system or system
being redesigned
Identify the accident/incident reporting system
2. Prepare the requirements for the new
system or system being redesigned
Use phase of flight definitions as a source for
the system requirements
3. Design/redesign the system Add phase of flight definitions to the new
design
3
Step Example: Phase of Flight Definitions
4. Implement the new/redesigned system Note the phase of flight definitions in the
system documentation
5. Populate the new/redesigned system Record to phase of flight in the
new/redesigned system
Overview of Standard Definitions
The CICTT Aircraft Make/Model standardization process defines individual aircraft in terms of a
single and unique aircraft representation that is agreed upon by the CICTT user community.
There are two key benefits associated with applying the process: (1) it allows an organization to
integrate data from multiple systems and create new low-cost analytical tools, and (2) it allows
cooperating organizations to inexpensively share data for the purpose of conducting safety
analyses with more comprehensive data sets. (A similar process is being used to develop
aircraft engine standard definitions)
How is the CICTT Standard used?
To understand the CICTT standard use this document in conjunction with International Standard
For Aircraft Make, Model, And Series Groupings Business Rules Version 1.1 May 2005. There
are two distinct scenarios for applying the CICTT standard: using it as an off-the-shelf
component for the development of a new system, or retrofitting it to an existing system.
When applying the standard to a new system, the system developers will use the standards
tables to support the data entry process. Simply stated, the standards tables can to be used to
create pull-down menus. When used, the reporting user will be required to select a standard
CICTT value from a displayed list of makes, models, and series. In the event that a make,
model or series being reported on is not in the pull down list, “no valid value” can be selected to
flag the record for manual review and completion. If the aircraft reported is found later to be
represented in the standard, it can be corrected. If the aircraft in question is not found to be
represented in the standard, the CICTT update process would be used to create a new aircraft
representation and the flagged report would be corrected when the new standard is released.
When applying the CICTT standard to an existing system, the process is more time consuming
and complex. As a first step, existing representations for makes, models and series must be
associated (cross-walked) to single standard representations. For example, all representations
of Boeing, i.e., Boeing Corp., Boeing Aircraft Company, Boeing, misspellings (Boeing), etc.,
must be identified, loaded to look-up table and then related to the CICTT standard. The same is
true for all models and series.
Once the process of associating current values to CICTT standard values has been completed,
the next step is to write data transformation scripts. The scripts compare current values to
standard values, and then insert the standard values into a new column. Values that cannot be
associated with a standard can be placed into a “suspense” file to be reviewed manually. This
process identifies values that were missed during the association process. It also identifies
aircraft that are not represented in the CICTT standards tables. Over time, this process causes
the database to become increasingly “clean” and maintenance costs are reduced.
4
Adopting Aircraft Valid Values to Current Systems
In addition to creating standardized definitions for of aircraft make, model, and series, the
CICTT created a list of aircraft valid values. The CICTT recommends that organizations use the
guidelines below if they want to add the new aircraft valid values to records that all ready exist.
Strategy:
• Start with more frequent aircraft makes and progress to the less frequent aircraft makes.
　
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