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FEDERAL REGISTER, Friday, October 4, 1946
CODIFICATION GUIDEContinued T itle 29Labor :

Page Chapter VI National Wage Stabilization Board:
Part 807Wage Adjustment Board area wage rates 11356
T itle 32N ational D efense :
Chapter VIIIOffice of International T rade----------------11367
Part 801General regulations 4 documents.________ 11367
Part 824Consolidated license for exportation of certain chemicals a n d coated fabrics------ ------------------11368
Chapter IXCivilian Produc tion Administration :
N o t e : Regulations and orders appearing under this chapter are listed only in the Table of Con tents, supra.

Chapter XIOffice of Price Ad ministration :
Note: Regulations and orders appearing under this chapter are listed only in the Table of Con tents, supra.

Chapter XXIIIWar Assets Administration----------------11381
Part 8321Pricing and dis tribution policy for pro duction materials and production equipment 11381
T itle 49 T ransportation R ailroads:

and
Chapter IInterstate Com merce Commission:
Part 95Car service 2 docu ments_________ 11381, 11382
Chapter IIOffice of Defense Transportation :
Part 500Conservation of rail equipm ent____ ,---------- 11382
Part 520Conservation of rail equipment; exceptions, permits, and specil di rections _____________ 11382
the Army Air Forces, the Army Ground Forces, or any of the administrative or technical staffs or services of the army other than the Transportation Corps are not included.

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31 U. S. C. Supp. 223b AR 55-500, 3
July 1943 as amended by W. D. Cir. 219, 20 July 19461
seal E dward F. W itsell, Major General The Adjutant General.
P. R. Doc. 46-17852; Piled, Oct. 3, 1946;
8:51 a. m.

TITLE 14CIVIL AVIATION
Chapter ICivil Aeronautics Board Civil Air Regs., Amdt. 04-1
P art 04 A irplane A irworthiness ;
T ransport Categories FIRE PREVENTION IN AIR CARRIER AIRCRAFT

Amendment 04-1, Civil Air Regulations of Part 04 as promulgated on November 8, 1945.

Adopted, by the Civil Aeronautics Board at its office in Washington, D. C., on the 20th day of September 1946.
A study of air carrier aircraft acci dents in Which fires have been one of the causes shows that there is a need for a change in the airworthiness require ments with respect to transport category airplanes. The investigation shows that the changes needed are not confined to any particular component of the airplane but extend to all parts of the airplane which may create a fire hazard. The re quirements hereinafter set forth are in tended to aid in preventing any fire from starting, to detect at the outset any fire which has started, to prevent the spread of any fire, and to extinguish any fire.
It appearing to the Board that fire prevention regulations have been under consideration for several months; that proposed regulations were circulated in February and April of this year to the manufacturers of aircraft and to the air carrier operators; that many detailed discussions have been held with the rep resentatives of the aircraft manufactur ers and the air carrier operators; that in view of the foregoing sufficient public procedure has been afforded with regard to such rules and further notice or public procedure would serve no useful purpose;
and that any further proceedings would serve only to delay the regulations which it is in the public interest to adopt at this time;
The Civil Aeronautics Board finds that the notice and public procedure pro vided for in section 4 a of the Admin istrative Procedure Act is unnecessary with respect to the Civil Air Regulations hereinafter set forth..
Now, therefore, effective November 1, 1946, Part 04 of the Civil Air Regulations is amended as follows:
1. By adding the following to 04.00:
All aircraft certificated under the transport category, the manufacture of which is completed after September 30, 1947, shall comply with the following sections of this part: 04.075, 04.38210, 04.38230, 04.3824, 04.38251, 04.38252, 04.4113, 04.4211, 04.4231 c, 04.425
through 04.4251, 04.4320, 04.4321, 04.433, 04.434, 04.441 and 04.470 through 04.472, 04.49 through 04.4902, 04.491 a and c>, and 04.4910 through 04.493.
2. By adding a new 04.075 to read as follows:
04.075 Susceptibility of materials to fire. Where necessary for the purpose of determining compliance with any of the following definitions, the Adminis trator shall prescribe the heat conditions and testing procedures which any spe cific material or individual part must meet.
a Fireproof. Fireproof material means a material which will withstand heat equally well or better than steel in dimensions appropriate for the purpose for which it is to be used. When applied to material and parts used to confine fires In designated fire zones fireproof means th at the material or part will perform this function under the most severe con ditions of fire and duration likely to occur in such zones.
b Fire-resistant. When applied to sheet or structural members, fire-re
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sistant material shall mean a material which will withstand heat equally well or better than aluminum alloy in dimensions appropriate for the purpose for which it is to be used. When applied to fluidcarrying lines, this term refers to a line and fitting assembly which will perform its intended protective functions under the heat and other conditions likely to occur at the particular location.
c Flame-resistant. Flame-resist ant material means material which will not support combustion to the point of propagating, beyond safe limits, a flame after removal of the ignition source.
d Flash-resistant. Flash - resist ant material means material which will not burn violently when ignited.
e Inflammable.
Inflammable fluids or gases mean those which will ignite readily or explode.
3. By adding a new 04.38210 to read as follows:
04.38210 Internal doors. Where in ternal doors are equipped with louvres or other ventilating means, provision convenient to the crew shall be made for closing the flow of air through the door when such action is found necessary.
4. By adding to 04.38230 the follow ing:
Where partitions between compart ments are equipped with louvres or other means allowing air to flow between such compartments, provision convenient to the crew shall be made for closing the flow of air through the louvres or other means when such action is found neces sary.
5. By deleting 04.3824, 04.38240, and 04.3825, and inserting in lieu thereof the following:
04.3824 Cabin interiors. All com partments occupied or used by the crew or passengers shall comply with the fol lowing provisions:
a Materials shall in no case be less than flash-resistant.
b The wall and ceiling linings, the covering of all upholstering, floors, and furnishings shall be flame-resistant.
c Compartments where smoking is to be permitted shall be equipped with ash trays of the self-contained type which are completely removable. All other compartments shall be placarded against smoking.
d All receptacles for used towels, papers, and waste shall be of fire-resist ant material, and shall incorporatcovers or other provisions for containing possible fires started in the receptacles.
04.3825 Cargo and baggage com partments.
04.38250 General. Each cargo and baggage compartment shall be designed for the placarded maximum weight of contents and critical load distributions at the appropriate maximum load fac tors corresponding to all specified flight and ground load conditions, excluding the .emergency" landing conditions of 04.26. Provisions shall be made to pre vent the contents of such compartments from becoming a hazard by shifting un der these loads. The provisions also shall be adequate to protect the passen-