[Code of Federal Regulations]

[Title 14, Volume 1]

[Revised as of January 1, 2006]

From the U.S. Government Printing Office via GPO Access

[CITE: 14CFR33.17]



[Page 770-771]

 

                     TITLE 14--AERONAUTICS AND SPACE

 

CHAPTER I--FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION

 

PART 33_AIRWORTHINESS STANDARDS: AIRCRAFT ENGINES--Table of Contents

 

               Subpart B_Design and Construction; General

 

Sec. 33.17  Fire prevention.



    (a) The design and construction of the engine and the materials used 

must minimize the probability of the occurrence and spread of fire. In 

addition, the design and construction of turbine engines must minimize 

the probability of the occurrence of an internal fire that could result 

in structural failure, overheating, or other hazardous conditions.

    (b) Except as provided in paragraphs (c), (d), and (e) of this 

section, each external line, fitting, and other component, which 

contains or conveys flammable fluid must be fire resistant. Components 

must be shielded or located to safeguard against the ignition of leaking 

flammable fluid.

    (c) Flammable fluid tanks and supports which are part of and 

attached to the engine must be fireproof or be enclosed by a fireproof 

shield unless damage by fire to any non-fireproof part will not cause 

leakage or spillage of flammable fluid. For a reciprocating engine 

having an integral oil sump of less than 25-quart capacity, the oil sump 

need not be fireproof nor be enclosed by fireproof shield.

    (d) For turbine engines type certificated for use in supersonic 

aircraft, each external component which conveys or contains flammable 

fluid must be fireproof.



[[Page 771]]



    (e) Unwanted accumulation of flammable fluid and vapor must be 

prevented by draining and venting.



(Secs. 313(a), 601, and 603, 72 Stat. 759, 775, 49 U.S.C. 1354(a), 1421, 

and 1423; sec. 6(c), 49 U.S.C. 1655(c))



[Amdt. 33-6, 39 FR 35464, Oct. 1, 1974, as amended by Amdt. 33-8, 42 FR 

15047, Mar. 17, 1977; Amdt. 33-10, 49 FR 6850, Feb. 23, 1984]