Point of Contact :Doug Ingerson Department of Transportation Federal Aviation Administration WJ Hughes Technical Center Fire Safety Branch, AJP6320 Bldg 205 Atlantic City Int'l Airport, NJ USA tel: fax: web page: Federal Aviation Administration ~ WJ Hughes Technical Center Fire Safety Branch, AJP6320 ~ Atlantic City Int’l Airport, NJ USA International Aircraft Systems Fire Protection Working Group Gatwick/London, United Kingdom – 19-20April2006 Engine Nacelle Halon Replacement

Slide #2 Federal Aviation Administration ~ WJ Hughes Technical Center Fire Safety Branch, AJP6320 ~ Atlantic City Int’l Airport, NJ USA International Aircraft Systems Fire Protection Working Group Gatwick/London, United Kingdom – 19-20April2006 PRESENTATION CONTENTS  REVIEW EQUIVALENCE DATA TO DATE  HFC-125 SIMULATION  MINIMUM PERFORMANCE STANDARD TESTING - NOVEC 1230  DISCUSS STATUS

Slide #3 Federal Aviation Administration ~ WJ Hughes Technical Center Fire Safety Branch, AJP6320 ~ Atlantic City Int’l Airport, NJ USA International Aircraft Systems Fire Protection Working Group Gatwick/London, United Kingdom – 19-20April2006 REVIEWING EQUIVALENCE DATA TO DATE Agent Ventilation configuration Fire Threat Equivalent Concentration (%v/v) HFC-125 High JP8 spray17.5 JP8 pool7.6 Low OIL spray16.4 (a) JP8 pool8.1 (a) CF3I High JP8 spray5.6 JP8 poolIncomplete Low OIL spray7.2 (a, b) JP8 poolIncomplete (a) Bracketing method used to find mass equivalent (b) Partial result, JP8 verification incomplete as of November 2005

Slide #4 Federal Aviation Administration ~ WJ Hughes Technical Center Fire Safety Branch, AJP6320 ~ Atlantic City Int’l Airport, NJ USA International Aircraft Systems Fire Protection Working Group Gatwick/London, United Kingdom – 19-20April2006 REVIEWING EQUIVALENCE DATA TO DATE AgentFuel Peak, Critical or Design Concentration (%v/v) REFERENCE CF3I PROPANE6.5 (p)NFPA 2001, TABLE A JP8 SPRAY3.2 (c)NIST SP890, V.2, TBL 10, p.115 JP8 POOL6.8 (c)NIST SP890, V.2, TBL 10, p.115 OIL7.2 (d)FAATC; none; work in progress... HFC-125 METHANE14.7 (p)NFPA 2001, TABLE A PROPANE15.7 (p)NFPA 2001, TABLE A PROPANE  12.6 (p) NIST SP890, V.2, FIG. 41, p.78 JP8 SPRAY8.7 (c)NIST SP890, V.2, TBL 10, p.115 JP8 POOL12 (c)NIST SP890, V.2, TBL 10, p.115 JP8 SPRAY, LoVent25.4 (d)AFRL-VA-WP-TR JP8 SPRAY, HiVent18.2 (d)AFRL-VA-WP-TR JP817.5 (d)FAATC; none; work in progress... OTHER REPORTED or CALCULATED CONCENTRATIONS

Slide #5 Federal Aviation Administration ~ WJ Hughes Technical Center Fire Safety Branch, AJP6320 ~ Atlantic City Int’l Airport, NJ USA International Aircraft Systems Fire Protection Working Group Gatwick/London, United Kingdom – 19-20April2006  HFC-125 CAN SIMULATE THE DISTRIBUTION OF HALON 1301 IN ENGINE NACELLE COMPARTMENTS  TECHNICAL NOTE PUBLISHED  DOT/FAA/AR-TN99/64, “Simulating the Distribution of Halon 1301 in an Aircraft Engine Nacelle With HFC-125”  INCLUDES BIBLIOGRAPHICAL REFERENCES  EXPLAINING THE PHYSICAL REASONING  TEST CASES  ADDITIONAL TEST CASE INCLUDED  DESCRIBES PROCEDURE TO UTILIZE THIS SIMULATION  TECH NOTE DID NOT ADDRESS AGENT STORAGE TEMPERATURE FOR COLD SOAK EVALUATION DURING CERTIFICATION TESTING  JAKOB (Ja) NUMBER USED TO ADDRESS THIS SHORTFALL HFC-125 SIMULATION

Slide #6 Federal Aviation Administration ~ WJ Hughes Technical Center Fire Safety Branch, AJP6320 ~ Atlantic City Int’l Airport, NJ USA International Aircraft Systems Fire Protection Working Group Gatwick/London, United Kingdom – 19-20April2006  JAKOB (Ja) NUMBER (1) :  A MEASURE OF THE FRACTION OF A LIQUID THAT FLASHES TO VAPOR WHEN DEPRESSURIZED INSTANEOUSLY  Ja IS A RATIO OF :  THE DIFFERENCE IN ENTHALPY OF A LIQUID BETWEEN ITS NORMAL BOILING POINT & “AMBIENT” TEMPERATURE  HEAT OF VAPORIZATION AT THE NORMAL BOILING POINT  IN LIEU OF EVALUATING THE HEAT CAPACITY BY INTEGRATION, THE NUMERATOR CAN BE DETERMINED BY THERMODYNAMIC TABLE (1) Womeldorf, C.A. & Grosshandler, W.L., “Fire Suppression System Performance of Alternative Agents in Aircraft Engine & Dry Bay Laboratory Simulations”, NIST SP890, November 1995, Vol. 2, p.591 HFC-125 SIMULATION

Slide #7 Federal Aviation Administration ~ WJ Hughes Technical Center Fire Safety Branch, AJP6320 ~ Atlantic City Int’l Airport, NJ USA International Aircraft Systems Fire Protection Working Group Gatwick/London, United Kingdom – 19-20April2006  TO MATCH THE HFC-125 TEMPERATURE TO -65°F (-54°C) HALON 1301  DETERMINE Ja OF HALON 1301 AT “AMBIENT” = -65°F (-54°C)  INSTANT DEPRESSURIZATION OCCURS WITHIN PLUMBING  PLUMBING WILL TEND TOWARD THE AGENT STORAGE TEMPERATURE  USE THIS Ja AND SOLVE FOR THE PROPER HFC-125 STORAGE TEMPERATURE  THERMODYNAMIC INFORMATION IS AVAILABLE FROM THE MANUFACTURER (DuPONT)  REMAINING PORTIONS OF THE SIMULATION PROTOCOL SHOULD BE FOLLOWED  FILL THE HALON 1301 BOTTLE WITH A MASS OF HFC-125 = 77% OF THE HALON MASS  CAPTURE THE GAS DISTRIBUTION TEST AS AN HFC-125 TEST  EVALUATE THE HFC-125 BEHAVIOR AS YOU WOULD HALON 1301 HFC-125 SIMULATION

Slide #8 Federal Aviation Administration ~ WJ Hughes Technical Center Fire Safety Branch, AJP6320 ~ Atlantic City Int’l Airport, NJ USA International Aircraft Systems Fire Protection Working Group Gatwick/London, United Kingdom – 19-20April2006 HFC-125 SIMULATION  EXAMPLES FOR USING HFC-125 AS A SIMULANT AND OBTAINING APPROVAL FOR THE HALON 1301 NACELLE FIRE SUPPRESSION SYSTEM  FAA/BOEING, SEPTEMBER 2003  BOEING ER  GE B  USAF/LOCKHEED MARTIN AEROSPACE, SPRING 2006  C-5 ( background on program at )  GE CF6-80C2

Slide #9 Federal Aviation Administration ~ WJ Hughes Technical Center Fire Safety Branch, AJP6320 ~ Atlantic City Int’l Airport, NJ USA International Aircraft Systems Fire Protection Working Group Gatwick/London, United Kingdom – 19-20April2006 MINIMUM PERFORMANCE STANDARD TESTING - NOVEC 1230  RUNNING NOVEC 1230 AGAINST THE MINIMUM PERFORMANCE STANDARD FOR ENGINE NACELLE/APU COMPARTMENTS (MPSe)  TESTING STARTED 11APRIL2006  AIRBUS, SIEMENS, & 3M SUPPORTING THE PROJECT  INTENDED AIRFRAME : AIRBUS A350  IF SUCCESSFUL, OTHER AIRBUS AIRFRAMES MAY BE CONSIDERED FOR THIS MATERIAL  INERTING GAS CONCENTRATION DATA FOR NOVEC 1230  REFERENCE NFPA 2001 (2004 EDITION), TABLE A  METHANE (CH 4 ) = 8.8%v/v  PROPANE (C 3 H 8 ) = 8.1%v/v

Slide #10 Federal Aviation Administration ~ WJ Hughes Technical Center Fire Safety Branch, AJP6320 ~ Atlantic City Int’l Airport, NJ USA International Aircraft Systems Fire Protection Working Group Gatwick/London, United Kingdom – 19-20April2006 MINIMUM PERFORMANCE STANDARD TESTING - NOVEC 1230  NACELLE TASK GROUP WILL BE ASKED IN THE NEAR FUTURE FOR COMMENTARY REGARDING THE SPECIFICATION OF THE AGENT DISCHARGE DURATION  SPECIFICATION IS BASED LOOSELY ON HALON 1301 & CLOSELY ON HFC-125 & CF3I BEHAVIORS  DURATION = 1.0 +/- 0.5 SEC FROM STORAGE PRESSURE TO 100 PSIG  THE INTENT OF THE SPECIFICATION WAS/IS TO :  KEEP THE TEST METHODOLOGY SIMILAR OVER TIME  TO PREVENT LARGE DISPARITY FROM HALON PERFORMANCE  WORK WITH BROMOTRIFLUOROPROPENE (2-BTP) IN 2004 :  SUGGESTED A CONFLICT WITH THE SPECIFICATION  CONFLICT DID NOT REQUIRE RESOLUTION  CONFLICT AGAIN APPEARS WITH NOVEC 1230

Slide #11 Federal Aviation Administration ~ WJ Hughes Technical Center Fire Safety Branch, AJP6320 ~ Atlantic City Int’l Airport, NJ USA International Aircraft Systems Fire Protection Working Group Gatwick/London, United Kingdom – 19-20April2006 MINIMUM PERFORMANCE STANDARD TESTING - NOVEC 1230 AGENT INJECTION ~ 10 FEET TEST SECTION INLET AIR FLOW APPROACH DUCT ~ 55 FEET FIREX PRESSURE TRANSDUCER HOT WIRE ANEMOMETER (HWA) ~ 15 FEET 3 HP (2.2 kW) ELECTRIC BLOWER SPRAY FIRE ZONE DIAMETER~2 FEET DIAMETER~3 FEET ID~2 FEET / OD~4 FEET

Slide #12 Federal Aviation Administration ~ WJ Hughes Technical Center Fire Safety Branch, AJP6320 ~ Atlantic City Int’l Airport, NJ USA International Aircraft Systems Fire Protection Working Group Gatwick/London, United Kingdom – 19-20April2006 MINIMUM PERFORMANCE STANDARD TESTING - NOVEC bar = 14.5 psi 1 m = 3.28 ft QUANTITIES DISCHARGED : => 3.6 lbf HALON 1301 => 8.8 lbf NOVEC 1230 NOTE VARIATION : => IN DISCHARGE DURATION => OF HWA BEHAVIOR (FIRE?!)

Slide #13 Federal Aviation Administration ~ WJ Hughes Technical Center Fire Safety Branch, AJP6320 ~ Atlantic City Int’l Airport, NJ USA International Aircraft Systems Fire Protection Working Group Gatwick/London, United Kingdom – 19-20April2006 CURRENT STATUS  NEED TO COMPLETE :  NOVEC 1230 MPSe TESTING  DRAFT MPSe & OBTAIN COMMENT FROM TASK GROUP  HFC-125 OVER-PRESSURE CHARACTERIZATION  CF3I MPSe TESTING  WRITE/PUBLISH REPORT & MPSe  MPSe TO BE APPENDIX MATERIAL IN FINAL REPORT  REPORT BODY TO DESCRIBE HISTORY & LESSONS LEARNED  DRAFT REPORT DUE SEP 2006