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FEDERA
VOLUME 22

NUMBER 166

Washington, Tuesday, August 27, 1957

TITLE 14 CIVIL AVIATION
Chapter I Civil Aeronautics Board Subchapter A Civil Air Regulations
Supp. 29
P art 3A irplane A ir w o r th in e ss , N or
mal, U t il ix y >and A crobatic C ategories anticollision l ig h t standards; electric
CABLE FOR POWER DISTRIBUTION

The amendment to 3.705-1 Anticolli sion tight standards clarifies that the policy applies to all airplanes for which an application for type certificate was made before April 1, 1957, instead of to airplanes type certificated before that date.
Section 3.693-1 Electric cable for power distribution sets forth design standards acceptable to the CAA for such cables when used in airplanes.
1. Section 3.705-1 Anticollision light standards as it appeared on May 24,1957, in 22 F. R. 3653, is amended by revising the second sentence of the opening para graph to read: When anticollision lights are installed on aircraft for which an application for a type certificate was made before April 1, 1957, the applicant may conform either to 3.705 or to the standards listed below:
2. A new f 3.693-1 is added to read as follows:
3.693-1 Electric cable for power dis tribution Environm ental conditions which should be considered: Ambient tem perature range which may exceed design lim its of th e cable;
vibration leading to abrasive wear of cable insulation or conductor failure; presence of aircraft fluids, such as oil, gasoline, or water, which may have detrim ental effects on cable insulation or increase its inflammability.
See 3.681.

fumes when overheated. Cable con CONTENTS
forming to Military Specification MILW-5086 or the equivalent is acceptable Agricultural Marketing Service Proposed rule making:
for this application.
Milk, Wilmington, Del., market This supplement shall become effective ing area; handling________
September 15, 1957.
Oranges, grapefruit, and tan Sec. 205, 52 Stat. 984; 49 U. S. C. 425. In te r gerines, Florida___________
p ret or apply secs. 601, 603, 52 Stat. 1007, Potatoes, Irish, Washington; re 1009, as amended; 49 U. S. C. 551, 553
vision of subpart_________
seal !

S. A. K e m p ,
Acting Administrator of Civil Aeronautics.

A ugust 20, 1957.
F. R. Doc. 57-6998; Filed, Aug. 26, 1957;
8:45 a. m.

Supp. 33
P art 4b A irplane A ir w o r t h in e ss :
T ransport C ategories MISCELLANEOUS AMENDMENTS

The following policies present methods acceptable to the CAA for showing com pliance with certain powerplant and electrieal requirements of Part 4b of the Civil Air Regulations.
Section 4b.401-4 sets forth safety standards for engine operation when an automatic propeller control system is in stalled. The type of analysis or tests applicable to_the propeller reversing sys tem furnished by the airplane manufac turer are explained in 4b.407-l.
Section 4b.474-l provides acceptable means for stopping intermittent duty type motors employed in propeller re versing systems.
The types of malfunctions which should be revealed by the checking means required in fire detector circuits are set forth in 4b.485-l.
The reliability criteria for electrical generating systems to assure continued service after the occurrence of a single fault or failure are given in 4b.622-l, and acceptable standards for fire re sistant electrical equipment and compo nents as installed in airplanes are estab lished in 4b.626-l.
The following policies are hereby adopted:
4b.401-4 Engine operation with au tomatic propeller control system installed CAA policies which apply to 4b.401
C ontinued on next page
Fa&e
6897
6889
6896

Agriculture Department
See also Agricultural Marketing Service.
Notices :
Agricultural Conservation Pro gram Service ; assignment and reservation of functions with respect to emergency conservation measures__________ 6902
Production emergency loans, designation of areas:
Arkansas________________ 6901
North Carolina___________ 6901
Army Department
See Engineers Corps.
Atomic Energy Commission
Proposed rule making:
Licensing of byproduct material;
schedule A, ion generating tube____________1_______ 6899
Civil Aeronautics Board
Notices:
Arctic-Pacific, Inc.; hearing__
Proposed rule making:
Requirements f o r approved training course, aircraft sim ulator___________________
Rules and regulations:
Airplane airworthiness, normal, utility, and acrobatic categories ; anticollision l i g h t standards, electric cable for power distribution_________
Airplane airworthiness: trans port categories; miscellane ous amendments__________

6903
6899

6883
6883

Commerce Department
See Civil Aeronautics Adminstration; Foreign Commerce Bureau;
Patent Office.
Defense Department
See Engineers Corps.
Engineers Corps
Rules and regulations:
Real estate activities in connec tion with Civil Works Proj ects; reservoir areas_______ 6888
6883