16.4 NTSB Part 830 Incident & Accident Notification Procedures

16.4 NTSB Part 830 Incident & Accident Notification Procedures

In the event of an aviation mishap, the legal relationship between the air carrier, the flight crew, the aircraft dispatcher, and federal investigative agencies is governed by Title 49 of the Code of Federal Regulations (49 CFR) Part 830. Part 830 is promulgated directly by the National Transportation Safety Board (NTSB)—an independent federal agency tasked by Congress with investigating every civil aviation accident in the United States and determining probable cause.

For the aircraft dispatcher, comprehensive mastery of Part 830 is mandatory. When an incident occurs, the dispatcher is frequently the central operational coordinator responsible for activating the airline's Emergency Response Plan (ERP), notifying the NTSB, coordinating with the FAA, securing flight records, and preserving aircraft wreckage.

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1. Statutory Definitions: Accident vs. Incident (49 CFR § 830.2)

Under 49 CFR § 830.2, the NTSB establishes precise legal definitions that distinguish an aircraft accident from an incident:

1. Aircraft Accident

An Aircraft Accident is defined as 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, in which:

• Any person suffers death or serious injury; or
• In which the aircraft receives substantial damage.

Crucial Dispatcher Legal Boundaries:

• "Intention of Flight": If maintenance personnel are taxiing an aircraft across an airport ramp without intention of flight and strike a jet bridge, it is NOT an NTSB aircraft accident (it is an industrial/ground damage occurrence). However, if passengers or flight crew have boarded with the intention of flight and push back from the gate, any qualifying injury or damage is legally an accident.
• Duration: The accident window begins upon boarding with intention of flight and ends only when all persons have disembarked.

2. Incident

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

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2. The Legal Criteria for "Serious Injury" (49 CFR § 830.2)

An injury suffered during aircraft operations is legally classified as a Serious Injury if it meets any one of the following five statutory tests:

1. The 48-Hour Hospitalization Rule:
   • Requires hospitalization for more than 48 hours, commencing within 7 days from the date the injury was received.
2. Bone Fractures (With Explicit Exclusions):
   • Results in a fracture of any bone, EXCEPT simple fractures of fingers, toes, or nose.
   • ADX Exam Trap: A passenger suffering a broken finger or broken nose during severe turbulence does NOT meet the threshold for a serious injury. However, a fractured wrist, arm, clavicle, rib, or ankle IS a serious injury, instantly elevating the occurrence to an NTSB Aircraft Accident!
3. Severe Tissue / Nerve Damage:
   • Causes severe hemorrhages, or nerve, muscle, or tendon damage.
4. Internal Organ Damage:
   • Involves damage to any internal organ (e.g., ruptured spleen, punctured lung, kidney trauma).
5. Burn Criteria:
   • Involves second- or third-degree burns, or any burns affecting more than 5 percent of the body surface.

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3. "Substantial Damage" & The Mandatory Exclusions (49 CFR § 830.2)

The third trigger for an aircraft accident is Substantial Damage. 49 CFR § 830.2 defines substantial damage as:

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.

The Statutory Exclusions (What is NOT Substantial Damage):

Congress and the NTSB explicitly exclude common operational and maintenance wear items from the definition of substantial damage. The following damages are NOT substantial damage, regardless of repair cost:

+-------------------------------------------------------------------------+
|                  49 CFR § 830.2 STATUTORY DAMAGE EXCLUSIONS             |
+-------------------------------------------------------------------------+
| • Engine failure or damage limited solely to an engine                  |
| • Bent fairings or engine cowlings                                      |
| • Dented skin or small punctured holes in skin or fabric               |
| • Ground damage to rotor or propeller blades                            |
| • Damage to landing gear, wheels, tires, brakes                         |
| • Damage to flaps, engine accessories, or wingtips                      |
+-------------------------------------------------------------------------+

Classic Dispatch Exam Scenarios:

• Scenario A: A twin-engine Boeing 777 experiences an uncontained catastrophic turbine blade disintegration. Shrapnel is completely contained within the nacelle, but the engine is totally destroyed ($12 million replacement cost). Is this an NTSB accident? NO. Engine damage limited to an engine is explicitly excluded from substantial damage (though it requires immediate incident notification under § 830.5).
• Scenario B: An Airbus A321 experiences a tailstrike on landing, causing buckling of the aft pressure bulkhead and primary fuselage longerons requiring heavy structural depot repair. Is this an accident? YES. Structural strength is adversely affected, requiring major repair.

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4. Incidents Requiring Immediate NTSB Notification (49 CFR § 830.5)

Under 49 CFR § 830.5, the operator of any civil aircraft must immediately, and by the most expeditious means available, notify the nearest NTSB office when an aircraft accident occurs, when any of the 12 listed incidents in § 830.5(a) occurs, or — under § 830.5(b) — when an aircraft is overdue and is believed to have been involved in an accident:

1. Flight Control System Malfunction or Failure:
   • Any uncommanded movement, jam, disconnection, or failure of primary flight control surfaces (elevators, ailerons, rudder, stabilizer trim).
2. Flight Crewmember Incapacitation:
   • Inability of any required flight crewmember to perform normal flight duties as a result of injury or illness (e.g., heart attack, food poisoning, hypoxia, stroke).
3. Uncontained Turbine Engine Failure:
   • Failure of any internal turbine engine component that results in the escape of debris other than through the exhaust path.
4. In-Flight Fire:
   • Any fire occurring inside the cabin, cockpit, cargo hold, wheel well, or engine bay while airborne.
5. Aircraft Collision in Flight:
   • Any midair collision between two or more aircraft.
6. Property Damage Exceeding $25,000:
   • Damage to property, other than the aircraft, estimated to exceed $25,000 for repair or fair market value in the event of total loss.
7. Large Multiengine Aircraft Systems Failures (> 12,500 lbs MTOW):
   • In-flight failure of electrical systems requiring sustained use of an emergency bus powered by a backup source (e.g., Ram Air Turbine [RAT], APU, or main battery).
   • In-flight failure of hydraulic systems resulting in sustained reliance on the sole remaining hydraulic system.
   • Sustained loss of thrust produced by two or more engines.
   • An evacuation of an aircraft in which an emergency egress system (slide) is activated.
8. Propeller Blade Release:
   • Release of all or a portion of a propeller blade from an aircraft (excluding release caused solely by ground contact).
9. Electronic Flight Instrument System (EFIS) Display Failure:
   • A complete loss of information, excluding flickering, from more than 50 percent of an aircraft's certified electronic display system (e.g., primary flight displays, multifunction displays, EICAS/ECAM).
10. Airborne Collision Avoidance System (TCAS / ACAS) Resolution Advisory:
    • ACAS / TCAS Resolution Advisories (RA) issued when an aircraft is being operated on an instrument flight rules flight plan and compliance with the advisory is necessary to avert a substantial risk of collision between two or more aircraft.
11. Rotor Blade Damage:
    • Damage to helicopter tail or main rotor blades requiring major repair or replacement.
12. Wrong-Surface Operations & Runway Incursions (Air Carrier Aircraft):
    • Any event in which an aircraft operated by an air carrier (i) lands or departs on a taxiway, an incorrect runway, or other area not designed as a runway, or (ii) experiences a runway incursion that requires the operator or crew of another aircraft or vehicle to take immediate corrective action to avoid a collision.

[!WARNING] Exam Trap — the overrun that is not on the list. A runway overrun or an undershoot is not, by itself, one of the § 830.5(a) notification triggers. An overrun becomes reportable only if it independently meets the accident definition (serious injury or substantial damage) in § 830.2. The wrong-surface and runway-incursion item above is the one candidates most often mis-state.

Plus § 830.5(b): The Overdue Aircraft Trigger

Separate from the twelve incident triggers, 49 CFR § 830.5(b) requires immediate notification whenever an aircraft is overdue and is believed to have been involved in an accident. For the dispatcher this is the operational bridge between routine flight following and emergency response: when a flight fails to report, cannot be raised on any communication path, and its fuel endurance has expired, the dispatcher initiates the carrier's overdue-aircraft procedure, alerts ATC and the Air Route Traffic Control Center of record, activates the Emergency Response Plan, and makes the § 830.5(b) notification.

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5. Preservation of Aircraft Wreckage, Mail, Cargo & Records (49 CFR § 830.10)

Following an accident or reportable incident, the air carrier is legally obligated under 49 CFR § 830.10 to preserve all wreckage, mail, cargo, and recorded flight data:

• Cockpit Voice Recorders (CVR) and Flight Data Recorders (FDR) must have power removed immediately upon engine shutdown to prevent erasure or recording over prior data loops (CVRs record on continuous 2-hour loops).
• Dispatch releases, flight plans, computerized fuel logs, weather briefings, NOTAM packages, and load manifests must be immediately impounded and secured by the dispatch department.

The Three Legal Exceptions Permitting Movement of Wreckage:

Prior to the time the NTSB takes physical custody of wreckage, mail, or cargo, it may NOT be moved or disturbed, EXCEPT to the minimum extent necessary:

1. To remove persons injured or trapped;
2. To protect the wreckage from further damage (e.g., rising floodwaters, advancing ground fire); or
3. To protect the public from injury.

Mandatory Documentation Requirement: When wreckage, mail, or cargo is moved pursuant to these three exceptions, the person authorizing movement must record the original locations and conditions with detailed sketches, notes, and photographs before disturbing the site.

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6. Filing NTSB Form 6120.1 & Statutory Deadlines (49 CFR § 830.15)

Under 49 CFR § 830.15, official written reports must be filed with the NTSB on official NTSB Form 6120.1 (Report of an Aircraft Accident or Incident):

Critical Takeaway on Incident Reporting:

Notice the critical statutory distinction: For an accident, filing Form 6120.1 within 10 days is mandatory in all cases. For an incident (even one requiring immediate notification under § 830.5), Form 6120.1 is filed ONLY if specifically requested by the NTSB!