Uploaded December 2017 | Updated September 2026, 1 hour ago
This skill video demonstrates how to extinguish an APU/EPU or engine fire.
NOTE: Some aircraft APU panels may take special tools such as wrenches to access. Be familiar with aircraft in your jurisdiction.
1. Approach aircraft. Size up fire conditions.
2. Activate external controls to deploy on-board extinguishing systems (if applicable).
NOTE: Ensure on-board extinguishing has been deployed by activating the external controls or by confirming deployment by communication with the flight crew, if possible.
3. Identify correct access panel location.
4. Open access panel, using a pike pole or other tool.
WARNING: Do not stand directly under hatch. Burning fuel may drop causing injury or death.
5. Apply agent at appropriate pressure and flow using prescribed techniques.
NOTE: Practice agent conservation.
6. Stop discharging when the fire is extinguished.
7. If extinguishing with a handline, back away from the fire.
8. Maintain situational awareness of area for signs of reignition.
NOTE: When dealing with military aircraft, responders should assume hypergolic fuels may be involved, which will necessitate a hazardous materials response.
This skill video demonstrates how to extinguish an APU/EPU or engine fire.
NOTE: Some aircraft APU panels may take special tools such as wrenches to access. Be familiar with aircraft in your jurisdiction.
1. Approach aircraft. Size up fire conditions.
2. Activate external controls to deploy on-board extinguishing systems (if applicable).
NOTE: Ensure on-board extinguishing has been deployed by activating the external controls or by confirming deployment by communication with the flight crew, if possible.
3. Identify correct access panel location.
4. Open access panel, using a pike pole or other tool.
WARNING: Do not stand directly under hatch. Burning fuel may drop causing injury or death.
5. Apply agent at appropriate pressure and flow using prescribed techniques.
NOTE: Practice agent conservation.
6. Stop discharging when the fire is extinguished.
7. If extinguishing with a handline, back away from the fire.
8. Maintain situational awareness of area for signs of reignition.
NOTE: When dealing with military aircraft, responders should assume hypergolic fuels may be involved, which will necessitate a hazardous materials response.
