SPECIAL INVESTIGATION: UMTA PROTOTYPE BUS FIRE NEAR PHOENIX, ARIZONA, MAY 13, 1975
The report presents the Board's investigation of an accident, involving a bus which caught on fire in the upper right area of the engine compartment. The driver tried to extinguish the fire through the hood access door, but it did not provide adequate access to extinguish the fire. The fire spread to the passenger compartment and destroyed the entire bus. The National Transportation Safety Board determines that the probable cause of the fire was the ignition of oil which leaked from the accessory drive manifold when it came in contact with a hot engine exhaust system component. The fire spread because of (1) the failure of the hood-opening mechanism to operate and permit fire extinguisher access, and (2) the presence of fire-consumable materials in the fire wall of the bus.
National Transportation Safety BoardOffice of Surface Transportation Safety
Washington, DC USA 20594
- Publication Date: 1975-12-5
- Pagination: 33 p.
- TRT Terms: Buses; Crash investigation; Emission control systems; Engines; Exhaust gases; Fire extinguishers; Fires; Flammability; Highway safety; Ignition; Internal combustion engines; Lubricants; Manifolds; Materials; Oils; Prototypes; Seats; Traffic crashes
- Uncontrolled Terms: Motor vehicle accidents
- Subject Areas: Bridges and other structures; Highways; Materials; Public Transportation; Safety and Human Factors; Vehicles and Equipment;
- Accession Number: 00136685
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: NTSB-HAR-75-8 Spec. Inv.
- Files: TRIS
- Created Date: Jul 13 1976 12:00AM