1. Engine Nacelle Halon Replacement, FAA, WJ Hughes Technical Center
Point of Contact : Doug Ingerson
Department of Transportation
Federal Aviation Administration
WJ Hughes Technical Center
Fire Safety Branch, AAR-440
Bldg 205
Atlantic City Int'l Airport, NJ USA
tel:
fax:
web page:
SLIDE# 1
International Aircraft Systems Fire Protection Working Group
Atlantic City , NJ USA 5Nov2003
Federal Aviation Administration
WJ Hughes Technical Center, Fire Safety Section, AAR-440
Atlantic City Int'l Airport, NJ USA

2. CONTENTS briefly EXPLAIN the equivalence process
EXPLAIN the equivalent mass and concentration methods
ILLUSTRATE results to date - mass/concentration equivalence
DISCUSS what work remains
SLIDE# 2
International Aircraft Systems Fire Protection Working Group
Atlantic City , NJ USA 5Nov2003
Federal Aviation Administration
WJ Hughes Technical Center, Fire Safety Section, AAR-440
Atlantic City Int'l Airport, NJ USA

3. briefly EXPLAIN the equivalence process
SLIDE# 3
International Aircraft Systems Fire Protection Working Group
Atlantic City , NJ USA 5Nov2003
Federal Aviation Administration
WJ Hughes Technical Center, Fire Safety Section, AAR-440
Atlantic City Int'l Airport, NJ USA

4. PROJECT OBJECTIVES
GENERATE A PROCEDURE WHICH CAN BE USED BY ANYONE TO DEMONSTRATE EQUIVALENCE TO HALON 1301 IN THE NACELLE
PRODUCE CERTIFICATION CRITERIA FOR HFC-125 AND CF3I
SLIDE# 4
International Aircraft Systems Fire Protection Working Group
Atlantic City , NJ USA 5Nov2003
Federal Aviation Administration
WJ Hughes Technical Center, Fire Safety Section, AAR-440
Atlantic City Int'l Airport, NJ USA

5. SLIDE# 5 CONCENTRATION TEST FIRE TEST
Halon 1301
Volumetric Concentration
certification 6%
Time (sec)
CONCENTRATION TEST
ESTABLISH BENCHMARK for HALON 1301
RTD(ave, H1301)
FIRE TEST
Analyzer
Probes,
Certification
FIND MASS EQUIVALENT OF THE REPLACEMENT CANDIDATE
RTD(ave, rep.can)  RTD(ave, H1301)
FIRE TEST
Replacement Candidate
Volumetric Concentration
Time (sec)
CONCENTRATION TEST
CEQUIV
“certification”
SLIDE# 5
International Aircraft Systems Fire Protection Working Group
Atlantic City , NJ USA 5Nov2003
Federal Aviation Administration
WJ Hughes Technical Center, Fire Safety Section, AAR-440
Atlantic City Int'l Airport, NJ USA

6. EXPLAIN the equivalent mass and concentration methods
SLIDE# 6
International Aircraft Systems Fire Protection Working Group
Atlantic City , NJ USA 5Nov2003
Federal Aviation Administration
WJ Hughes Technical Center, Fire Safety Section, AAR-440
Atlantic City Int'l Airport, NJ USA

7. HALON 1301 CHARACTERIZED AGAINST FIRE THREATS
EQUIVALENCE METHOD - MASS
HALON 1301 CHARACTERIZED AGAINST FIRE THREATS
USING SALIENT ENVIRONMENTAL ASPECTS IN A TEST FIXTURE
2 COMBUSTION SCENARIOS - SPRAY & POOL
3 FUELS - TURBINE FUEL, LUBRICANT, HYDRAULIC FLUID
MEASURE THE DURATION THE FIRE IS EXTINGUISHED
BENCHMARK BASED ON THE AVERAGE OF 5 TESTS
ITERATE MASS OF THE REPLACEMENT CANDIDATE
AGENT DISTRIBUTION CONSTRAINED - NOT OPTIMIZED
AVERAGE OF 5 TESTS MUST EQUAL OR EXCEED HALON BENCHMARK
SLIDE# 7
International Aircraft Systems Fire Protection Working Group
Atlantic City , NJ USA 5Nov2003
Federal Aviation Administration
WJ Hughes Technical Center, Fire Safety Section, AAR-440
Atlantic City Int'l Airport, NJ USA

8. SLIDE# 8 EQUIVALENCE METHOD - CONCENTRATION t H1301 t H1301
A Representation of Typical Concentration Traces for Halon 1301 and a Mass Equivalent Amount of a Replacement Candidate at the Flame Front
certification
Notice the characteristics of the typical trace at the flame front in the certification profile :
Exponential growth & decay does not permit a square wave function to meet certification.
A marginal increase in the concentration profile ensured the variability in testing never produced a concentration profile less than certification.
The concentration trace exceeds 6%v/v Halon 1301 for more time than 0.5 second. 6%
Concentration Equivalence Step #2
Use the duration from the Halon 1301 concentration profile and review the profile of the replacement candidate to find the corresponding concentration (CEQUIV).
t H1301
CEQUIV
International Aircraft Systems Fire Protection Working Group
Atlantic City , NJ USA 5Nov2003
WJ Hughes Technical Center, Fire Safety Section, AAR-440
Atlantic City Int'l Airport, NJ USA
Federal Aviation Administration
Concentration Equivalence Step #1
Establish the duration that the Halon 1301 concentration at the flame front is at/above 6% v/v. 6%
t H1301
Volumetric Concentration
SLIDE# 8
Time (sec)
Halon 1301
Replacement Candidate

9. Equivalence for concentration spray fire work based on channels 1 & 2
evaluated channels for the duration at or above 6% v/v
took average of the 2 channels over 3 tests
SLIDE# 9
International Aircraft Systems Fire Protection Working Group
Atlantic City , NJ USA 5Nov2003
Federal Aviation Administration
WJ Hughes Technical Center, Fire Safety Section, AAR-440
Atlantic City Int'l Airport, NJ USA

10. SLIDE# 10 duration of Halon 1301 for concentration  6%v/v
Equivalent concentration for the replacement candidate
SLIDE# 10
International Aircraft Systems Fire Protection Working Group
Atlantic City , NJ USA 5Nov2003
Federal Aviation Administration
WJ Hughes Technical Center, Fire Safety Section, AAR-440
Atlantic City Int'l Airport, NJ USA

11. ILLUSTRATE results to date
SLIDE# 11
International Aircraft Systems Fire Protection Working Group
Atlantic City , NJ USA 5Nov2003
Federal Aviation Administration
WJ Hughes Technical Center, Fire Safety Section, AAR-440
Atlantic City Int'l Airport, NJ USA

12. RESULTS TO DATE - MASS EQUIVALENCE
WARNING !!
DO NOT USE THESE NUMBERS FOR COMPARISON
AGENT DISTRIBUTION IS NOT OPTIMIZED
REPLACEMENT CANDIDATE QUANTITIES ARE ARTIFICIALLY LARGE
GAS CONCENTRATION IS THE ONLY VALID BASIS FOR COMPARISON
QUANTITIES REPORTED FOR THE PURPOSE OF COMPLETENESS
SPRAY FIRE, HIGH VENTILATION
3.6 LBF HALON 1301 = 8.0 LBF HFC-125 = 4.5 LBF CF3I
POOL FIRE, HIGH VENTILATION
3.6 LBF HALON 1301 = 5.5 LBF HFC-125
SLIDE# 12
International Aircraft Systems Fire Protection Working Group
Atlantic City , NJ USA 5Nov2003
Federal Aviation Administration
WJ Hughes Technical Center, Fire Safety Section, AAR-440
Atlantic City Int'l Airport, NJ USA

13. RESULTS TO DATE - CONCENTRATION EQUIVALENCE
Analyzer
Probes,
Pool
Analyzer
Probes,
Spray
SLIDE# 13
International Aircraft Systems Fire Protection Working Group
Atlantic City , NJ USA 5Nov2003
Federal Aviation Administration
WJ Hughes Technical Center, Fire Safety Section, AAR-440
Atlantic City Int'l Airport, NJ USA

14. SLIDE# 14 International Aircraft Systems Fire Protection Working Group
Atlantic City , NJ USA 5Nov2003
Federal Aviation Administration
WJ Hughes Technical Center, Fire Safety Section, AAR-440
Atlantic City Int'l Airport, NJ USA

15. DISCUSS what work remains
SLIDE# 15
International Aircraft Systems Fire Protection Working Group
Atlantic City , NJ USA 5Nov2003
Federal Aviation Administration
WJ Hughes Technical Center, Fire Safety Section, AAR-440
Atlantic City Int'l Airport, NJ USA

16. TESTING REMAINING Click Here to End CF3I => pool @ high ventilation
HFC-125 => spray & low ventilation
CF3I => spray & low ventilation
HFC-125 & CF3I cold agent proof tests
COMPLETION => SUMMER 2004
Click Here to End
SLIDE# 16
International Aircraft Systems Fire Protection Working Group
Atlantic City , NJ USA 5Nov2003
Federal Aviation Administration
WJ Hughes Technical Center, Fire Safety Section, AAR-440
Atlantic City Int'l Airport, NJ USA

17. GAS ANALYZER PROBE ARRANGEMENT, HALON 1301 CERTIFICATION WORK9 11 8 1 7 5 3 6 12 10 4
REGION OF FLAME
DURING FIRE TEST
FWD UP
RIGHT
3:00
12:00
STA 502
STA 527 2
DIMENSIONS ARE
IN FEET UNLESS
NOTED OTHERWISE
LOOKING
SLIDE# 17 5 13
International Aircraft Systems Fire Protection Working Group
Atlantic City , NJ USA 5Nov2003
Federal Aviation Administration
WJ Hughes Technical Center, Fire Safety Section, AAR-440
Atlantic City Int'l Airport, NJ USA

18. 13 SLIDE# 18 9 11 8 1 7 2 3 6 12 10 4 REGION OF FLAME DURING FIRE TEST
GAS ANALYZER PROBE ARRANGEMENT, HALON 1301 CERTIFICATION WORK
SLIDE# 18 9 11 8 1 7 2 3 6 12 10 4
REGION OF FLAME
DURING FIRE TEST
FWD UP
RIGHT
3:00
12:00
STA 502
STA 527 5
DIMENSIONS ARE
IN FEET UNLESS
NOTED OTHERWISE
LOOKING 13
International Aircraft Systems Fire Protection Working Group
Atlantic City , NJ USA 5Nov2003
Federal Aviation Administration
WJ Hughes Technical Center, Fire Safety Section, AAR-440
Atlantic City Int'l Airport, NJ USA

19. DURATIONS AT/ABOVE A GIVEN CONCENTRATION
EQUIVALENCE METHOD - CONCENTRATION
A Representation of a Typical Concentration Trace for a Mass Equivalent Amount of a Replacement Candidate at the Flame Front
~ Generating the Concentration Data Pool for the Replacement Candidate ~
Volumetric
Concentration
Time (sec) 8% 9% 7% 6%
10%
DURATIONS AT/ABOVE A GIVEN CONCENTRATION
SLIDE# 19
International Aircraft Systems Fire Protection Working Group
Atlantic City , NJ USA 5Nov2003
Federal Aviation Administration
WJ Hughes Technical Center, Fire Safety Section, AAR-440
Atlantic City Int'l Airport, NJ USA