Which incident would necessitate an immediate notification to the nearest NTSB field office?

• A. An in-flight fire
• B. A radial tire pressure issue
• C. A slow airspeed during climb
• D. A passenger medical issue on the ground

Answer: (A)

Immediate notification to the NTSB is required for accidents or serious incidents that occur in flight. An in-flight fire clearly fits this, because it creates an extreme safety risk and warrants prompt investigation to determine cause and prevent a repeat. The other scenarios don’t automatically trigger this requirement: a radial tire pressure issue on the ground is typically a maintenance concern, a slow airspeed during climb without an in-flight incident isn’t by itself an accident, and a passenger medical issue on the ground isn’t an in-flight event and isn’t handled through NTSB reporting.