Special Conditions: Aviation Technology Group, Incorporated, Javelin Model No. 100; Firewalls for Fuselage Mounted Engines and Fire Extinguishing for Aft Fuselage Mounted Engines, 13436-13438 [E7-5183]

Download as PDF rmajette on PROD1PC67 with RULES 13436 Federal Register / Vol. 72, No. 55 / Thursday, March 22, 2007 / Rules and Regulations individuals) and businesses and farms of different sizes that is reasonable given the demographics of the savings association’s assessment area(s); (D) A record of taking appropriate action, when warranted, in response to written complaints, if any, about the savings association’s performance in helping to meet the credit needs of its assessment area(s); and (E) A reasonable geographic distribution of loans given the savings association’s assessment area(s). (ii) Eligibility for an ‘‘outstanding’’ lending test rating. A small savings association that meets each of the standards for a ‘‘satisfactory’’ rating under this paragraph and exceeds some or all of those standards may warrant consideration for a lending test rating of ‘‘outstanding.’’ (iii) Needs to improve or substantial noncompliance ratings. A small savings association may also receive a lending test rating of ‘‘needs to improve’’ or ‘‘substantial noncompliance’’ depending on the degree to which its performance has failed to meet the standard for a ‘‘satisfactory’’ rating. (2) Community development test ratings for intermediate small savings associations.—(i) Eligibility for a satisfactory community development test rating. The OTS rates an intermediate small savings association’s community development performance ‘‘satisfactory’’ if the savings association demonstrates adequate responsiveness to the community development needs of its assessment area(s) through community development loans, qualified investments, and community development services. The adequacy of the savings association’s response will depend on its capacity for such community development activities, its assessment area’s need for such community development activities, and the availability of such opportunities for community development in the savings association’s assessment area(s). (ii) Eligibility for an outstanding community development test rating. The OTS rates an intermediate small savings association’s community development performance ‘‘outstanding’’ if the savings association demonstrates excellent responsiveness to community development needs in its assessment area(s) through community development loans, qualified investments, and community development services, as appropriate, considering the savings association’s capacity and the need and availability of such opportunities for community development in the savings association’s assessment area(s). (iii) Needs to improve or substantial noncompliance ratings. An intermediate small savings association may also receive a community development test rating of ‘‘needs to improve’’ or ‘‘substantial noncompliance’’ depending on the degree to which its performance has failed to meet the standards for a ‘‘satisfactory’’ rating. (3) Overall rating.—(i) Eligibility for a satisfactory overall rating. No intermediate small savings association may receive an assigned overall rating of ‘‘satisfactory’’ unless it receives a rating of at least ‘‘satisfactory’’ on both the lending test and the community development test. VerDate Aug<31>2005 12:29 Mar 21, 2007 Jkt 211001 (ii) Eligibility for an outstanding overall rating. (A) An intermediate small savings association that receives an ‘‘outstanding’’ rating on one test and at least ‘‘satisfactory’’ on the other test may receive an assigned overall rating of ‘‘outstanding.’’ (B) A small savings association that is not an intermediate small savings association that meets each of the standards for a ‘‘satisfactory’’ rating under the lending test and exceeds some or all of those standards may warrant consideration for an overall rating of ‘‘outstanding.’’ In assessing whether a bank’s performance is ‘‘outstanding,’’ the OTS considers the extent to which the savings association exceeds each of the performance standards for a ‘‘satisfactory’’ rating and its performance in making qualified investments and its performance in providing branches and other services and delivery systems that enhance credit availability in its assessment area(s). (iii) Needs to improve or substantial noncompliance overall ratings. A small savings association may also receive a rating of ‘‘needs to improve’’ or ‘‘substantial noncompliance’’ depending on the degree to which its performance has failed to meet the standards for a ‘‘satisfactory’’ rating. * * * * * Dated: March 16, 2007. By the Office of Thrift Supervision. John M. Reich, Director. [FR Doc. E7–5188 Filed 3–21–07; 8:45 am] BILLING CODE 6720–01–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 23 [Docket No. CE263; Special Conditions No. 23–203–SC] Special Conditions: Aviation Technology Group, Incorporated, Javelin Model No. 100; Firewalls for Fuselage Mounted Engines and Fire Extinguishing for Aft Fuselage Mounted Engines Federal Aviation Administration (FAA), DOT. ACTION: Final special conditions. AGENCY: SUMMARY: These special conditions are issued for the Aviation Technology Group, Incorporated, Javelin Model No. 100 airplane. This airplane will have novel or unusual design features associated with aft mounted engine fire protection. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. These special conditions contain the additional safety standards that the Administrator considers necessary to establish a level of safety PO 00000 Frm 00014 Fmt 4700 Sfmt 4700 equivalent to that established by the existing airworthiness standards. DATES: Effective Date: March 12, 2007. FOR FURTHER INFORMATION CONTACT: Leslie B. Taylor, Regulations & Policy Branch, ACE–111, Small Airplane Directorate, Aircraft Certification Service, 901 Locust, Kansas City, Missouri 64106; telephone (816) 329– 4134; facsimile (816) 329–4090, e-mail at leslie.b.taylor@faa.gov. SUPPLEMENTARY INFORMATION: Background On February 25, 2005, Aviation Technology Group, Incorporated applied for a type certificate for their new Javelin Model No. 100. The Javelin Model No. 100 is a two-place acrobatic airplane with two fuselage mounted turbofan engines. Part 23 historically addressed fire protection on multiengine airplanes based on the assumption that the engines are sufficiently separated to essentially eliminate the possibility of an engine fire spreading to another engine. On traditional multiengine airplanes, this has been achieved by locating engines on the wings separated by the fuselage. This configuration ensures that an engine fire on one side does not migrate to the opposite engine. This configuration also protects the opposite engine from heat radiating from the engine fire. Prevention, identification, and containment are traditional means of fire protection. Prevention has been provided through minimizing the potential for ignition of flammable fluids and vapors. Identification has been provided by locating engines within the pilots’ primary field of view and/or with the incorporation of fire detection systems. This has provided both rapid detection of a fire and confirmation when it was extinguished. Containment has been provided through the isolation of designated fire zones through flammable fluid shutoff valves and firewalls. This philosophy also ensures that components of the engine control system will function effectively to permit a safe shutdown of an engine. However, containment has only been demonstrated for 15 minutes. If a fire occurs in traditional part 23 airplanes, the appropriate corrective action is to land as soon as possible. For a small, simple airplane originally envisioned by part 23, it is possible to descend and land within 15 minutes. Thus, the occupants can safely exit the airplane before the firewall is breached. These simple airplanes normally have the engine located away from critical flight control systems and primary structure. E:\FR\FM\22MRR1.SGM 22MRR1 Federal Register / Vol. 72, No. 55 / Thursday, March 22, 2007 / Rules and Regulations This has ensured that, throughout a fire event, a pilot can continue safe flight, and it has made the prediction of fire effects relatively easy. Title 14 CFR part 23, did not envision the type of configuration of the Javelin Model No. 100 airplane. Conclusion Type Certification Basis Aircraft, Aviation safety, Signs and symbols. If the Administrator finds that the applicable airworthiness regulations in 14 CFR part 23 do not contain adequate or appropriate safety standards for the Javelin Model No. 100 because of a novel or unusual design feature, special conditions are prescribed under the provisions of § 21.16. In addition to the applicable airworthiness regulations and special conditions, the Javelin Model No. 100 must comply with the fuel vent and exhaust emission requirements of 14 CFR part 34 and the noise certification requirements of 14 CFR part 36. The FAA issues special conditions, as defined in § 11.19, under § 11.38 and they become part of the type certification basis under § 21.17(a)(2). Special conditions are initially applicable to the model for which they are issued. Should the type certificate for that model be amended later to include any other model that incorporates the same novel or unusual design feature, the special conditions would also apply to the other model under § 21.101. Novel or Unusual Design Features The Javelin Model No. 100 will incorporate the following novel or unusual design features: The Javelin Model No. 100 incorporates two turbofan engines located side-by-side in compartments in the aft fuselage. Discussion of Comments Notice of proposed special conditions No. 23–07–01–SC for the Aviation Technology Group, Incorporated, Javelin Model No. 100 airplanes was published on January 8, 2007 (72 FR 660). One comment was received. It agreed with the proposed special conditions. No change was requested. rmajette on PROD1PC67 with RULES Applicability As discussed above, these special conditions are applicable to the Javelin Model No. 100. Should Aviation Technology Group, Incorporated, apply at a later date for a change to the type certificate to include another model on the same type certificate incorporating the same novel or unusual design feature, the special conditions would apply to that model as well. VerDate Aug<31>2005 12:29 Mar 21, 2007 Jkt 211001 This action affects only certain novel or unusual design features on one model of airplanes. It is not a rule of general applicability. List of Subjects in 14 CFR Part 23 Citation The authority citation for these special conditions is as follows: I Authority: 49 U.S.C. 106(g), 40113 and 44701; 14 CFR 21.16 and 21.17; and 14 CFR 11.38 and 11.19. The Special Conditions Accordingly, pursuant to the authority delegated to me by the Administrator, the following special conditions are issued as part of the type certification basis for Aviation Technology Group, Incorporated, Javelin Model No. 100 airplanes. Title: Firewalls for Fuselage Mounted Engines and Fire Extinguishing for Aft Fuselage Mounted Engines. I Fire Isolation and Extinguishing The fire protection system of the airplane must include features to isolate each fire zone from any other zone and the airplane to maintain isolation of the engines during a fire. Therefore, these special conditions mandate that the firewall required by § 23.1191 be extended to provide firewall isolation between either engine. These special conditions require that heat radiating from a fire originating in any fire zone must not affect components, airframe structure, systems, or flight controls in adjacent compartments in a way that endangers the airplane. Each fire zone should be ventilated to prevent the accumulation of flammable vapors. It must also be designed such that it will not allow entry of flammable fluids, vapors, or flames from other fire zones. It must be designed such that it does not create an additional fire hazard from the discharge of vapors or fluids. 1. SC 23.1195—Add the requirements of § 23.1195 while deleting ‘‘For commuter category,’’ adding the requirement to ‘‘minimize the probability of re-ignition,’’ and deleting the statement ‘‘An individual ‘one-shot’ system may be used.’’ 23.1195, Fire Extinguishing Systems (a) Fire extinguishing systems must be installed and compliance shown with the following: (1) Except for combustor, turbine, and tailpipe sections of turbine-engine installations that contain lines or PO 00000 Frm 00015 Fmt 4700 Sfmt 4700 13437 components carrying flammable fluids or gases for which a fire originating in these sections is shown to be controllable, a fire extinguisher system must serve each engine compartment; (2) The fire extinguishing system, the quantity of extinguishing agent, the rate of discharge, and the discharge distribution must be adequate to extinguish fires and minimize the probability of re-ignition; (3) The fire extinguishing system for a nacelle must be able to simultaneously protect each compartment of the nacelle for which protection is provided. (b) If an auxiliary power unit is installed in any airplane certificated to this part, that auxiliary power unit compartment must be served by a fire extinguishing system meeting the requirements of paragraph (a)(2) of this section. 2. SC 23.1197—Add the requirements of § 23.1197 while deleting ‘‘For commuter category airplanes.’’ 23.1197, Fire Extinguishing Agents The following applies: (a) Fire extinguishing agents must— (1) Be capable of extinguishing flames emanating from any burning fluids or other combustible materials in the area protected by the fire extinguishing system; and (2) Have thermal stability over the temperature range likely to be experienced in the compartment in which they are stored. (b) If any toxic extinguishing agent is used, provisions must be made to prevent harmful concentrations of fluid or fluid vapors (from leakage during normal operation of the airplane or as a result of discharging the fire extinguisher on the ground or in flight) from entering any personnel compartment, even though a defect may exist in the extinguishing system. This must be shown by test except for builtin carbon dioxide fuselage compartment fire extinguishing systems for which— (1) Five pounds or less of carbon dioxide will be discharged under established fire control procedures into any fuselage compartment; or (2) Protective breathing equipment is available for each flight crewmember on flight deck duty. 3. SC 23.1199—Add the requirements of § 23.1199 while deleting ‘‘For commuter category airplanes.’’ 23.1199, Extinguishing Agent Containers The following applies: (a) Each extinguishing agent container must have a pressure relief to prevent bursting of the container by excessive internal pressures. E:\FR\FM\22MRR1.SGM 22MRR1 13438 Federal Register / Vol. 72, No. 55 / Thursday, March 22, 2007 / Rules and Regulations (b) The discharge end of each discharge line from a pressure relief connection must be located so that discharge of the fire-extinguishing agent would not damage the airplane. The line must also be located or protected to prevent clogging caused by ice or other foreign matter. (c) A means must be provided for each fire extinguishing agent container to indicate that the container has discharged or that the charging pressure is below the established minimum necessary for proper functioning. (d) The temperature of each container must be maintained, under intended operating conditions, to prevent the pressure in the container from— (1) Falling below that necessary to provide an adequate rate of discharge; or (2) Rising high enough to cause premature discharge. (e) If a pyrotechnic capsule is used to discharge the fire extinguishing agent, each container must be installed so that temperature conditions will not cause hazardous deterioration of the pyrotechnic capsule. 4. SC 23.1201—Add the requirements of § 23.1201 while deleting ‘‘For commuter category airplanes.’’ 23.1201, Fire Extinguishing System Materials The following apply: (a) No material in any fire extinguishing system may react chemically with any extinguishing agent so as to create a hazard. (b) Each system component in an engine compartment must be fireproof. Issued in Kansas City, Missouri, on March 12, 2007. James E. Jackson, Manager, Small Airplane Directorate, Aircraft Certification Service. [FR Doc. E7–5183 Filed 3–21–07; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 71 [Docket No. FAA–2006–25008; Airspace Docket No. 06–ACE–6] RIN 2120–AA66 Modification of Class E Airspace; Kaiser/Lake, Ozark, MO Federal Aviation Administration (FAA), DOT. ACTION: Final rule; technical amendment. rmajette on PROD1PC67 with RULES AGENCY: 12:29 Mar 21, 2007 History On August 8, 2006, a final rule was published in the Federal Register, Docket No. FAA–2006–25008, Airspace Docket No. 06–ACE–6 that amended Title 14 Code of Federal Regulations part 71 by modifying the Class E airspace area at Kaiser/Lake Ozark, MO (71 FR 44885). In that rule, the reference to FAA Order 7400.9 was published as FAA Order 7400.9N. The correct reference is FAA Order 7400.9P. In addition, the corresponding dates that refer to the Order are incorrect. Instead of ‘‘* * * September 1, 2005, and effective September 16, 2005’’, the dates should read ‘‘* * * September 1, 2006, and effective September 15, 2006 * * *’’. Amendment to Final Rule Accordingly, pursuant to the authority delegated to me, the reference to FAA Order 7400.9 for Docket No. FAA–2006– 25008, Airspace Docket No. 06–ACE–6, as published in the Federal Register on August 8, 2006 (71 FR 44885), is corrected as follows: I On page 44885, column 3, lines 16, 18 and 19, and page 44886, column 2, lines 17, 18 and 19, amend the language to read: I § 71.1 [Amended] * SUMMARY: This technical amendment corrects a final rule published in the VerDate Aug<31>2005 Federal Register on August 8, 2006 (71 FR 44885), Docket No. FAA–2006– 25008, Airspace Docket No. 06–ACE–6. In that rule, the reference to FAA Order 7400.9 was published as FAA Order 7400.9N. The correct reference is FAA Order 7400.9P. Also, the corresponding dates that refer to the Order should state ‘‘* * * September 1, 2006, and effective September 15, 2006 * * *’’ instead of ‘‘* * * September 1, 2005, and effective September 16, 2005’’. This technical amendment corrects those errors. DATES: Effective Date: 0901 UTC, March 22, 2007. The Director of the Federal Register approves this incorporation by reference action under 1 CFR part 51, subject to the annual revision of FAA Order 7400.9 and publication of conforming amendments. FOR FURTHER INFORMATION CONTACT: Tameka Bentley, Airspace and Rules, Office of System Operations Airspace and AIM, Federal Aviation Administration, 800 Independence Avenue, SW., Washington, DC 20591; telephone: (202) 267–8783. SUPPLEMENTARY INFORMATION: Jkt 211001 * * * * • ‘‘* * * FAA Order 7400.9P’’ instead of ‘‘FAA Order 7400.9N * * *’’. • ‘‘* * * September 1, 2006, and effective September 15, 2006 * * *’’ PO 00000 Frm 00016 Fmt 4700 Sfmt 4700 instead of ‘‘* * * September 1, 2005, and effective September 16, 2005 * * *’’. * * * * * Issued in Washington, DC, March 14, 2007. Edith V. Parish, Manager, Airspace and Rules. [FR Doc. E7–5186 Filed 3–21–07; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 71 [Docket No. FAA–2006–23902; Airspace Docket No. 06–AGL–01] RIN 2120–AA66 Modification of Class E Airspace; Fremont, MI Federal Aviation Administration (FAA), DOT. ACTION: Final rule; technical amendment. AGENCY: SUMMARY: This technical amendment corrects a final rule published in the Federal Register on July 18, 2006 (71 FR 40652), Docket No. FAA–2006–23902, Airspace Docket No. 06–AGL–01. In that rule, the reference to FAA Order 7400.9 was published as FAA Order 7400.9N. The correct reference is FAA Order 7400.9P. Also, the corresponding dates that refer to the Order should state ‘‘* * * September 1, 2006, and effective September 15, 2006 * * *’’, instead of ‘‘* * * September 1, 2005, and effective September 16, 2005’’. This technical amendment corrects those errors. DATES: Effective Date: 0901 UTC, March 22, 2007. The Director of the Federal Register approves this incorporation by reference action under 1 CFR part 51, subject to the annual revision of FAA Order 7400.9 and publication of conforming amendments. FOR FURTHER INFORMATION CONTACT: Tameka Bentley, Airspace and Rules, Office of System Operations Airspace and AIM, Federal Aviation Administration, 800 Independence Avenue, SW., Washington, DC 20591; telephone: (202) 267–8783. SUPPLEMENTARY INFORMATION: History On July 18, 2006, a final rule was published in the Federal Register, Docket No. FAA–2006–23902, Airspace Docket No. 06–AGL–01, that amended Title 14 Code of Federal Regulations part 71 by modifying Class E Airspace; Fremont, MI (71 FR 40652). In that rule, E:\FR\FM\22MRR1.SGM 22MRR1

Agencies

[Federal Register Volume 72, Number 55 (Thursday, March 22, 2007)]
[Rules and Regulations]
[Pages 13436-13438]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E7-5183]


=======================================================================
-----------------------------------------------------------------------

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 23

[Docket No. CE263; Special Conditions No. 23-203-SC]


Special Conditions: Aviation Technology Group, Incorporated, 
Javelin Model No. 100; Firewalls for Fuselage Mounted Engines and Fire 
Extinguishing for Aft Fuselage Mounted Engines

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final special conditions.

-----------------------------------------------------------------------

SUMMARY: These special conditions are issued for the Aviation 
Technology Group, Incorporated, Javelin Model No. 100 airplane. This 
airplane will have novel or unusual design features associated with aft 
mounted engine fire protection. The applicable airworthiness 
regulations do not contain adequate or appropriate safety standards for 
this design feature. These special conditions contain the additional 
safety standards that the Administrator considers necessary to 
establish a level of safety equivalent to that established by the 
existing airworthiness standards.

DATES: Effective Date: March 12, 2007.

FOR FURTHER INFORMATION CONTACT: Leslie B. Taylor, Regulations & Policy 
Branch, ACE-111, Small Airplane Directorate, Aircraft Certification 
Service, 901 Locust, Kansas City, Missouri 64106; telephone (816) 329-
4134; facsimile (816) 329-4090, e-mail at leslie.b.taylor@faa.gov.

SUPPLEMENTARY INFORMATION:

Background

    On February 25, 2005, Aviation Technology Group, Incorporated 
applied for a type certificate for their new Javelin Model No. 100. The 
Javelin Model No. 100 is a two-place acrobatic airplane with two 
fuselage mounted turbofan engines.
    Part 23 historically addressed fire protection on multiengine 
airplanes based on the assumption that the engines are sufficiently 
separated to essentially eliminate the possibility of an engine fire 
spreading to another engine. On traditional multiengine airplanes, this 
has been achieved by locating engines on the wings separated by the 
fuselage. This configuration ensures that an engine fire on one side 
does not migrate to the opposite engine. This configuration also 
protects the opposite engine from heat radiating from the engine fire. 
Prevention, identification, and containment are traditional means of 
fire protection. Prevention has been provided through minimizing the 
potential for ignition of flammable fluids and vapors. Identification 
has been provided by locating engines within the pilots' primary field 
of view and/or with the incorporation of fire detection systems. This 
has provided both rapid detection of a fire and confirmation when it 
was extinguished. Containment has been provided through the isolation 
of designated fire zones through flammable fluid shutoff valves and 
firewalls. This philosophy also ensures that components of the engine 
control system will function effectively to permit a safe shutdown of 
an engine. However, containment has only been demonstrated for 15 
minutes. If a fire occurs in traditional part 23 airplanes, the 
appropriate corrective action is to land as soon as possible. For a 
small, simple airplane originally envisioned by part 23, it is possible 
to descend and land within 15 minutes. Thus, the occupants can safely 
exit the airplane before the firewall is breached. These simple 
airplanes normally have the engine located away from critical flight 
control systems and primary structure.

[[Page 13437]]

This has ensured that, throughout a fire event, a pilot can continue 
safe flight, and it has made the prediction of fire effects relatively 
easy.
    Title 14 CFR part 23, did not envision the type of configuration of 
the Javelin Model No. 100 airplane.

Type Certification Basis

    If the Administrator finds that the applicable airworthiness 
regulations in 14 CFR part 23 do not contain adequate or appropriate 
safety standards for the Javelin Model No. 100 because of a novel or 
unusual design feature, special conditions are prescribed under the 
provisions of Sec.  21.16.
    In addition to the applicable airworthiness regulations and special 
conditions, the Javelin Model No. 100 must comply with the fuel vent 
and exhaust emission requirements of 14 CFR part 34 and the noise 
certification requirements of 14 CFR part 36.
    The FAA issues special conditions, as defined in Sec.  11.19, under 
Sec.  11.38 and they become part of the type certification basis under 
Sec.  21.17(a)(2).
    Special conditions are initially applicable to the model for which 
they are issued. Should the type certificate for that model be amended 
later to include any other model that incorporates the same novel or 
unusual design feature, the special conditions would also apply to the 
other model under Sec.  21.101.

Novel or Unusual Design Features

    The Javelin Model No. 100 will incorporate the following novel or 
unusual design features:
    The Javelin Model No. 100 incorporates two turbofan engines located 
side-by-side in compartments in the aft fuselage.

Discussion of Comments

    Notice of proposed special conditions No. 23-07-01-SC for the 
Aviation Technology Group, Incorporated, Javelin Model No. 100 
airplanes was published on January 8, 2007 (72 FR 660). One comment was 
received. It agreed with the proposed special conditions. No change was 
requested.

Applicability

    As discussed above, these special conditions are applicable to the 
Javelin Model No. 100. Should Aviation Technology Group, Incorporated, 
apply at a later date for a change to the type certificate to include 
another model on the same type certificate incorporating the same novel 
or unusual design feature, the special conditions would apply to that 
model as well.

Conclusion

    This action affects only certain novel or unusual design features 
on one model of airplanes. It is not a rule of general applicability.

List of Subjects in 14 CFR Part 23

    Aircraft, Aviation safety, Signs and symbols.

Citation

0
The authority citation for these special conditions is as follows:

    Authority: 49 U.S.C. 106(g), 40113 and 44701; 14 CFR 21.16 and 
21.17; and 14 CFR 11.38 and 11.19.

The Special Conditions

0
Accordingly, pursuant to the authority delegated to me by the 
Administrator, the following special conditions are issued as part of 
the type certification basis for Aviation Technology Group, 
Incorporated, Javelin Model No. 100 airplanes.
    Title: Firewalls for Fuselage Mounted Engines and Fire 
Extinguishing for Aft Fuselage Mounted Engines.

Fire Isolation and Extinguishing

    The fire protection system of the airplane must include features to 
isolate each fire zone from any other zone and the airplane to maintain 
isolation of the engines during a fire. Therefore, these special 
conditions mandate that the firewall required by Sec.  23.1191 be 
extended to provide firewall isolation between either engine. These 
special conditions require that heat radiating from a fire originating 
in any fire zone must not affect components, airframe structure, 
systems, or flight controls in adjacent compartments in a way that 
endangers the airplane.
    Each fire zone should be ventilated to prevent the accumulation of 
flammable vapors. It must also be designed such that it will not allow 
entry of flammable fluids, vapors, or flames from other fire zones. It 
must be designed such that it does not create an additional fire hazard 
from the discharge of vapors or fluids.
    1. SC 23.1195--Add the requirements of Sec.  23.1195 while deleting 
``For commuter category,'' adding the requirement to ``minimize the 
probability of re-ignition,'' and deleting the statement ``An 
individual `one-shot' system may be used.''
23.1195, Fire Extinguishing Systems
    (a) Fire extinguishing systems must be installed and compliance 
shown with the following:
    (1) Except for combustor, turbine, and tailpipe sections of 
turbine-engine installations that contain lines or components carrying 
flammable fluids or gases for which a fire originating in these 
sections is shown to be controllable, a fire extinguisher system must 
serve each engine compartment;
    (2) The fire extinguishing system, the quantity of extinguishing 
agent, the rate of discharge, and the discharge distribution must be 
adequate to extinguish fires and minimize the probability of re-
ignition;
    (3) The fire extinguishing system for a nacelle must be able to 
simultaneously protect each compartment of the nacelle for which 
protection is provided.
    (b) If an auxiliary power unit is installed in any airplane 
certificated to this part, that auxiliary power unit compartment must 
be served by a fire extinguishing system meeting the requirements of 
paragraph (a)(2) of this section.
    2. SC 23.1197--Add the requirements of Sec.  23.1197 while deleting 
``For commuter category airplanes.''
23.1197, Fire Extinguishing Agents
    The following applies:
    (a) Fire extinguishing agents must--
    (1) Be capable of extinguishing flames emanating from any burning 
fluids or other combustible materials in the area protected by the fire 
extinguishing system; and
    (2) Have thermal stability over the temperature range likely to be 
experienced in the compartment in which they are stored.
    (b) If any toxic extinguishing agent is used, provisions must be 
made to prevent harmful concentrations of fluid or fluid vapors (from 
leakage during normal operation of the airplane or as a result of 
discharging the fire extinguisher on the ground or in flight) from 
entering any personnel compartment, even though a defect may exist in 
the extinguishing system. This must be shown by test except for built-
in carbon dioxide fuselage compartment fire extinguishing systems for 
which--
    (1) Five pounds or less of carbon dioxide will be discharged under 
established fire control procedures into any fuselage compartment; or
    (2) Protective breathing equipment is available for each flight 
crewmember on flight deck duty.
    3. SC 23.1199--Add the requirements of Sec.  23.1199 while deleting 
``For commuter category airplanes.''
23.1199, Extinguishing Agent Containers
    The following applies:
    (a) Each extinguishing agent container must have a pressure relief 
to prevent bursting of the container by excessive internal pressures.

[[Page 13438]]

    (b) The discharge end of each discharge line from a pressure relief 
connection must be located so that discharge of the fire-extinguishing 
agent would not damage the airplane. The line must also be located or 
protected to prevent clogging caused by ice or other foreign matter.
    (c) A means must be provided for each fire extinguishing agent 
container to indicate that the container has discharged or that the 
charging pressure is below the established minimum necessary for proper 
functioning.
    (d) The temperature of each container must be maintained, under 
intended operating conditions, to prevent the pressure in the container 
from--
    (1) Falling below that necessary to provide an adequate rate of 
discharge; or
    (2) Rising high enough to cause premature discharge.
    (e) If a pyrotechnic capsule is used to discharge the fire 
extinguishing agent, each container must be installed so that 
temperature conditions will not cause hazardous deterioration of the 
pyrotechnic capsule.
    4. SC 23.1201--Add the requirements of Sec.  23.1201 while deleting 
``For commuter category airplanes.''
23.1201, Fire Extinguishing System Materials
    The following apply:
    (a) No material in any fire extinguishing system may react 
chemically with any extinguishing agent so as to create a hazard.
    (b) Each system component in an engine compartment must be 
fireproof.

    Issued in Kansas City, Missouri, on March 12, 2007.
James E. Jackson,
Manager, Small Airplane Directorate, Aircraft Certification Service.
[FR Doc. E7-5183 Filed 3-21-07; 8:45 am]
BILLING CODE 4910-13-P

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.