Code of Federal Regulations

Title 14 - Aeronautics and Space
Volume: 1Date: 2021-01-01Original Date: 2021-01-01Title: Section § 33.64 - Pressurized engine static parts.Context: Title 14 - Aeronautics and Space. CHAPTER I - FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION. SUBCHAPTER C - AIRCRAFT. PART 33 - AIRWORTHINESS STANDARDS: AIRCRAFT ENGINES. Subpart E - Design and Construction; Turbine Aircraft Engines.
§ 33.64 Pressurized engine static parts. (a) Strength. The applicant must establish by test, validated analysis, or a combination of both, that all static parts subject to significant gas or liquid pressure loads for a stabilized period of one minute will not: (1) Exhibit permanent distortion beyond serviceable limits or exhibit leakage that could create a hazardous condition when subjected to the greater of the following pressures: (i) 1.1 times the maximum working pressure; (ii) 1.33 times the normal working pressure; or (iii) 35 kPa (5 p.s.i.) above the normal working pressure. (2) Exhibit fracture or burst when subjected to the greater of the following pressures: (i) 1.15 times the maximum possible pressure; (ii) 1.5 times the maximum working pressure; or (iii) 35 kPa (5 p.s.i.) above the maximum possible pressure. (b) Compliance with this section must take into account: (1) The operating temperature of the part; (2) Any other significant static loads in addition to pressure loads; (3) Minimum properties representative of both the material and the processes used in the construction of the part; and (4) Any adverse geometry conditions allowed by the type design. [Amdt. 33-27; 73 FR 55437, Sept. 25, 2008; Amdt. 33-27, 73 FR 57235, Oct. 2, 2008]