ntsb review of crew actions during in-flight fires has resulted in a series of recommendations...
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NTSB review of crew actions during in-flight fires has resulted in a series of recommendations calling for improved crew trainingand modification of cabin interiors to improve access to fires burning behind panels.
-Jan 2002
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Incidents Included:
Delta Flight 2030, MD-88, emergency landing at Cincinnati, Sept 17, 1999Flight attendant discharged halon extinguisher into return grills to extinguish fire.
AirTran Flight 913, DC-9-32, emergency landing at Greensboro Aug 8, 2000Electrical fire in cockpit bulkhead, no attempt made by flight attendants to extinguish fire.
American Flight 1683, MD-80, emergency landing at Dulles Nov 29, 2000Lightening strike induced arcing above cabin ceiling. Halon extinguisher discharged into access hole cut with pocketknife, extinguishing fire.
Air Canada Flight 797, DC-9, emergency landing at Cincinnati June 2, 1983Fire in aft lavatory behind sidewall, eventually destroyed aircraft, 23 fatalities.
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New Recommendations for 2002
(A-01-83) Issue Advisory Circular (AC) that describes the need for crewmembers to take immediate and aggressive action in response to signs of an inflight fire.
(A-01-84) Require principal operations inspectors to ensure that the contents of the advisory circular are incorporated into crewmember training programs.
(A-01-85) Amend Part 121.417 to require participation in firefighting drills that involve actual or simulated fires during crewmember recurrent training and to require that those drills include realistic scenarios on recognizing potential fire situations, locating the origin of the fire, and fighting hidden fires.
(A-01-86) Develop and require implementation of procedures or airplane modifi-cations that will provide the most effective means for crewmembers to gain access to areas behind interior panels for the purpose of applying extinguishing agent to hidden fires. As part of this effort, the FAA should evaluate the feasibility of equipping interior panels of new and existing planes with ports, access panels, or some other means to apply extinguishing agent behind interior panels.
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Coordinated Approach to Hidden Fire Protection
Accessibility
Detection
Suppression
Fire Fighting Procedures
Training and Equipment for Pilots & F/A’s
Material Flammability
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Detection and Suppression of Hidden Fires
Accessibility
Feasibility of ports, access panels for discharging handheld extinguishers
Detection
Particle Sensing (Photoelectric, Laser, Light Attenuation, Ionization)
Gas Sensing (Semiconductor, Infrared, Electrochemical)
Temperature Sensing (Metallic Resistance, Thermistors, Piezoelectric, Fiberoptic)
Suppression
Manual (handheld extinguishers)
Automatic (heat activated, or other control system linked to detection)
What is the role of ventilation?
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747SP Test Article
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747SP Test Section
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747SP Overhead Section
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Overhead Area of 747SP
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Candle Lantern
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Initial Crown Area Test Configuration
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Modified Overhead Area Test Configuration
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Modified Overhead Area Test Configuration
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Candle Lanterns Mounted in 747SP Overhead
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Candle Lanterns Mounted in 747SP Overhead
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Candle Lanterns Mounted in 747SP Overhead
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FastPort Prototype System Extended Above Ceiling
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FastPort Prototype Head
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Agent Discharge Through Ceiling Port
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Test Results
Hole in Ceiling
Fastport Prototype
w/5 extensions
Fastport 2nd Design w/0 extension
Fastport Feedthrough
w/0 extension
Fastport 2nd Design w/1 extension
Fastport Feedthrough
w/1 extension
2 extensions w/ no head
6 Along Crown (axial) X 1 X X X X X
6 Near Crown (perp) 6 1 5a 5b 5c 6 X
6 on Top of Ceiling Panel 0 X 3 3 4 6 4
a. Candle directly above discharge NOT extinguishedb. Candle farthest from discharge NOT extinguishedc. 4th candle from discharge NOT extinguishedX Not tested
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Future Work
Use of Halon 1301 to extinguish fire in overhead
Use of 5 lb Halon 1211 extinguishers
Effectiveness of discharge ports in smaller narrowbody overhead
Effectiveness of thermal imaging device to locate hidden fires
Feasibility of larger bottle w/distribution system
Fires in other areas (cheek, behind sidewall, etc.)
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Testing of Thermal Imaging Device
Argus®3
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Interior of FAATC’s 747SP
Thermal Trace of HeatPak
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Initial Smoldering Fire in Stowbin
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Initial Smoldering Fire in Stowbin
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Thermal Imaging Detection of Smoldering Fire in Stowbin
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1st Simulated Fire in Overhead Area
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1st Simulated Fire in Overhead Area
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2nd Simulated Fire in Overhead Area
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2nd Simulated Fire in Overhead Area
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2nd Simulated Fire in Overhead Area
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2nd Simulated Fire in Overhead Area
Panel Slid Sideways
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2nd Simulated Fire in Overhead Area
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Flaming Material on Upper Side of Ceiling Panel
Very Small Piece