In-Flight Fire and Smoke
1,459 occurrences · 311 fatal · 4,080 fatalities · 1949–2025
What it is
This hub covers in-flight fire and smoke — combustion or overheating that begins in the cockpit, cabin, cargo hold, or engine compartment while the aircraft is airborne, as opposed to a post-impact fire that starts after a crash has already occurred. An in-flight fire is treated as one of the most time-critical emergencies in aviation because smoke can quickly impair the crew's ability to see instruments or operate the aircraft.
Why it happens
Electrical faults, overheating equipment, and battery-related failures are common cabin and cockpit sources, while cargo fires have historically been linked to improperly packaged hazardous materials or reactive batteries in shipped goods. Engine and engine-compartment fires are typically traced to a fuel or oil leak reaching a hot surface, or to a mechanical failure inside the engine itself.
How the industry defends against it
Cargo holds on passenger transport aircraft are fitted with fire and smoke detection tied to automatic or crew-activated suppression systems, and engine fire-detection loops trigger dedicated extinguisher bottles isolated to that engine. Crews train specifically on smoke and fire checklists that prioritize locating and eliminating the source, and on rapid diversion to the nearest suitable airport rather than continuing to the original destination.
What this means for passengers
Transport-category aircraft carry dedicated fire detection and suppression equipment in the cargo holds and engines, and crews are trained to divert immediately rather than troubleshoot at length, reflecting how seriously the industry treats this failure mode. The records in this database include general-aviation aircraft, which typically lack dedicated cargo fire-suppression systems altogether.
Aircraft families
- Boeing 74718
- Boeing 70718
- Boeing 72712
- Boeing 73711
- Airbus A32010
- Lockheed C-130 Hercules9
- Boeing 7778
- McDonnell Douglas DC-96
- Bombardier CRJ5
- Boeing 7675
Countries
Notable investigated accidents
- 1980-08-19 — Saudi Arabian Airlines - SAUDIA (301 fatalities)
- 1998-09-02 — Swissair (229 fatalities)
- 1998-09-02 — Swissair Transport Limited (227 fatalities)
- 1979-11-26 — Pakistan International Airlines - PIA (156 fatalities)
- 1972-08-14 — Interflug (156 fatalities)
- 1973-07-11 — VARIG - Viação Aérea Rio Grandense (123 fatalities)
- 2002-05-07 — China Northern Airlines (112 fatalities)
- 1996-05-11 — ValuJet (110 fatalities)
- 1989-11-27 — Avianca (107 fatalities)
- 1972-08-31 — Aeroflot - Russian International Airlines (102 fatalities)
- 1996-02-26 — Sudanese Air Force - Al Quwwat al-Jawwiya As-Sudaniya (91 fatalities)
- 1977-01-13 — Aeroflot - Russian International Airlines (90 fatalities)
Counts are derived from official investigation records; one accident may involve several causes, and older or foreign records can be incomplete. This page explains patterns — it is not a safety ranking.