Incident classification

[ItsAjob]

Does anyone have any reference for incident classification?
ie. the way an incident would be classed as a C or B etc?

[IGh]

? Mishap Class A, B, C ?

Question posed above:

"... incident classification? ... incident ... classed as a C or B etc?"

Mishap, Occurrence, accident, incident, Class B, &ct -- changing variations in taxonomy.

Would your above QUESTION relate to US MILITARY "severity" classification?? [$10,000 - $200,000 - $1million]

In the North American mishap-universe, I often worry that known "incidents" (hull loss, major damage, injury) sometimes go UN-REPORTED, and then officially the case never happened (eg, NW A320 / 4May09 DEN, ARC, hard, tailstrike NOT shown as an NTSB accident/incident, nor as an FAA incident in ASIAS/AIDS databases).

Here are some notes on various taxonomies; I see the USAF now does employ the term "accident" (whereas two decades ago USAF never had "accidents" but instead they sometimes suffered a "mishap".

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NTSB Part 830.2 Definitions:
§ 830.2 Definitions
... words or phrases are defined as follows:

Aircraft accident means an occurrence associated with the operation of an aircraft which takes place between the time any person boards the aircraft with the intention of flight and all such persons have disembarked, and in which any person suffers death or serious injury, or in which the aircraft receives substantial damage. ...

Fatal injury means any injury which results in death within 30 days of the accident.

Incident means an occurrence other than an accident, associated with the operation of an aircraft, which affects or could affect the safety of operations....

Serious injury means any injury which:
(1) Requires hospitalization for more than 48 hours, commencing within 7 days from the date of the injury was received;
(2) results in a fracture of any bone (except simple fractures of fingers, toes, or nose);
(3) causes severe hemorrhages, nerve, muscle, or tendon damage;
(4) involves any internal organ; or
(5) involves second- or thirddegree burns, or any burns affecting more than 5 percent of the body surface.

Substantial damage means damage or failure which adversely affects the structural strength, performance, or flight characteristics of the aircraft, and which would normally require major repair or replacement of the affected component. Engine failure or damage limited to an engine if only one engine fails or is damaged, bent fairings or cowling, dented skin, small punctured holes in the skin or fabric, ground damage to rotor or propeller blades, and damage to landing gear, wheels, tires, flaps, engine accessories, brakes, or wingtips are not considered ‘‘substantial damage’’ for the purpose of this part.
[53 FR 36982, Sept. 23, 1988, as amended at 60 FR 40112, Aug. 7, 1995]

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Learn About the Safety Data - AIDS
“The FAA Accident/Incident Data System (AIDS) database contains incident data records for all categories of civil aviation . Incidents are events that do not meet the aircraft damage or personal injury thresholds contained in the National Transportation Safety Board (NTSB) definition of an accident. For example, the database contains reports of collisions between aircraft and birds while on approach to or departure from an airport. While such a collision may not have resulted in sufficient aircraft damage to reach the damage threshold of an NTSB accident ...”
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ICAO ... “ jointly chartered the CAST/ICAO Common Taxonomy Team (CICTT). The team was charged with developing common taxonomies and definitions for aviation accident and incident reporting systems....”

“Occurrence” is defined as “accident or incident” throughout this document. Generally, accidents and incidents differ only in the degree of injury sustained by persons involved or in damage sustained to the aircraft. Each category has a unique name and identifier to permit common coding in accident/incident ...

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USAF

... US Air Force conducts accident investigations of all Class A accidents involving USAF aircraft, unmanned aerial vehicles (UAVs), space systems, and missiles, unless they result solely in damage to government property (in which case the accident investigation is discretionary). Accident Investigation Boards (AIBs) are convened under the authority of Air Force Instruction (AFI) 51-503, Aerospace Accident Investigations.
... A Class A accident is an accident that results in fatality or total permanent disability, loss of an aircraft, or property damage of $1 million or more.

Statutory and Regulatory Authorities
AFI 51-503, Aerospace Accident Investigations
DoDI 6055.07, Accident Investigation, Reporting and Record Keeping
10 U.S.C. Section 2254
10 U.S.C. Section 2255

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Naval Aircraft Mishap Severity Classes
Naval Aircraft Mishap Severity Classes

Mishap Category FM, FRM, AGM; SEVERITY Class A, B, C ... [$1 million, $200000, $10000]

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