In addition to the "9 Box Matrix" and the use of sound scientific methodologies, all of DVI's Aviation Safety Experts and Aircraft Accident Investigators refer to industry best practices such as the ICAO Manual for Aircraft Accident and Incident Investigations and ASTM Standard "E620-11 Standard Practice for Reporting Opinions of Scientific or Technical Experts" and ASTM Standard "E678-07 Standard Practice for Evaluation of Technical Data."
ICAO Manual for Aircraft Accident and Incident Investigations
The ICAO Manual for Aircraft Accident and and Incident Investigations states: "Accident investigation is a systematic process whereby all of the possible causes of an adverse event are evaluated and eliminated until the remaining causes are identified as applicable to that investigation. Although many accidents appear to be similar to others, this may be misleading. Therefore, it is imperative that investigators keep an open mind so as not to focus on one aspect and thus overlook another. Investigation of accidents consists of three phases: a) collection of data, b) analysis of data, and c) presentation of findings."
ASTM E678-07 Standard Practice for Evaluation of Technical Data
This practice establishes the criteria for evaluating scientific and technical data, and other relevant considerations, which constitute acceptable bases for forming scientific or technical expert opinions.
Pertinent Sections of ASTM E678-07 Include:
3.1 – “Persons engaged in forensic investigations are responsible for identifying significant data.”
5.1 – “The evaluation process is based on the information collected and is intended to
determine the most logical and reasonable explanation of the incident, accounting for all
6.1 – “Opinions or conclusions must account for all known relevant facts related to the
incident and be consistent with accepted scientific and logical principles.”
E620-11 Standard Practice for Reporting Opinions of Scientific or Technical Experts
This practice covers the scope of information to be contained in formal written technical reports which express the opinions of the scientific or technical expert with respect to the study of items that are or may reasonably be expected to be the subject of criminal or civil litigation.
Pertinent Sections of ASTM E620-11 Include:
3.1 – "Significance and Use: “This practice establishes those elements of the expert’s opinion report which will make the report understandable to the intended recipient and focus on the technical aspects germane to the purpose for which the opinion is rendered.”
4.1 – "No format specified."
4.2 – "Pertinent Facts: ALL facts pertinent to opinions to be included (4.2.1). Evaluate facts and data per E678 (4.2.2)."
4.3 – "Opinions and Conclusions: ALL opinions related to expert’s retention to be included. Report to contain expert’s “logic and reasoning.”