This document discusses analyzing safety data in aviation, including defining accidents and incidents, identifying non-accident safety indicators, and comparing primary, secondary, and tertiary safety factors. It also summarizes trends in aviation accident statistics reported by the NTSB for different types of operators from the 1980s to 1990s and factors that affect commercial aviation safety.

1. Safety Data Analysis

2. Learning Objectives
• Recognize the outstanding safety record of commercial aviation relative to other modes of
transportation.
• Explain the difficulty in measuring aviation safety data.
• Explain the difficulty in measuring aviation safety data.
• Identify several non accident safety indicators.
• Distinguish between accidents and incidents.
• Compare and contrast primary, secondary, and tertiary safety factors.
• Describe the role of the airframe and engine manufacturers in analyzing
• safety data.
• Discuss the results of Boeing’s Summary of Commercial Jet
• Transport Aircraft Accidents.
• Summarize the trend in aviation accident statistics as reported by
• the NTSB for Part 121 and Part 135 operators during the 1980s and
• 1990s.

3. • major factors affecting commercial aviation safety
• accident causes and types
• Boeing Company of commercial jet accidents between 1959 and 1999
• Discussion of aviation accident statistics for each segment of commercial aviation during the 1980s
and 1990s

4. • mechanical
• human
• Or technological
components in the
air transportation
system

5. Safety Factors
• In passenger transportation…..
safety factors = events or procedures associated with or influence fatality
rates.
no predictive power; an accident=safety degradation

6. Safety Factors
• fatality rates is necessary for safety analysis.