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REGISTE
VOLUME 22

1934 y N n to

NUMBER 62

Washington, Saturday, March 30, 1957

TITLE 6 AGRICULTURAL CREDIT
Chapter I Farm Credit Administration Subchapter BFederal Farm Loan System
Part 10F ederal L and B anks G enerally Interest rates on loans made through ASSOCIATIONS

In order to reflect approval which has been given to Increased interest rates on lans closed through national farm loan associations by the Federal Land Banks of Baltimore and Wichita, 10.41 of Title 6 of the Code of Federal Regulations, as amended 21 F. R. 10167; 22 F. R. 133, 653, 1318, 1586, is hereby further amended, effective April 1, 1957, by sub stituting 5 V2 for 5 in the line with Baltimore therein; and, effective April 2, 1957, by substituting 5 for 4y2" in the line with Wichita therein.
Sec. 6 , 47 Stat. 14, as amended; 12 U. S. C.
665. Interprets or applies secs. 12 Second, 17, 39 Stat. 370, 375, as amended; 12 U. S. C.
771 Second, 831
seal
R. b . T ootell, Governor, Farm Credit Administration.

P. R. Doc. 572423; Filed, Mar. 29, 1957;
8:45 a. m.

TITLE 14 CIVIL AVIATION
Chapter I Civil Aeronautics Board Civil Air Regs., Amdt. 60-5
P ar? 60A ir T raffic R ules high altitude quadrantal rules
Adopted by the Civil Aeronautics Board at its office in Washington, D. C., on the 26th day of March 1957.
Section 60.32 of Part 60 of the Civil Air regulations currently establishes cruiswg altitudes appropriate to the direction or flight for the elsewhere area and au thorizes the Administrator to specify cnusing altitudes within control zones and areas. These altitude rules must be served when flight is being conducted imr akve 3,000 feet above the surface under visual flight rules VFR on civil Hways, and in the elsewhere area
when visibility is less than 3 miles. Sec tion 60.44 requires aircraft being op erated under instrument flight rules IFR to be flown at altitudes authorized by air. traffic control within controlled airspace; and to be flown at prescribed altitudes appropriate to the direction of flight when in the elsewhere area. The purpose of the provisions for VFR cruis ing altitudes in 60.32 is to provide air craft operating in accordance with the altitudes prescribed therein or specified by the Administrator with at least 1,000
feet vertical separation when operating on reciprocal courses and at least 500
feet separation when operating on crossing courses. Likewise, the purpose of the provisions for IFR cruising alti tudes in 60.44 is to provide separation between those aircraft operating in ac cordance with the altitudes prescribed therein or the assigned altitudes au thorized by air traffic control.
It has now been well established, how ever, that altimeter system errors in crease significantly with increases in al titude and air speed For example, experience has shown that aircraft which take off from a common point with the same altimeter settings may have altim eter readings which differ as much as 1,000 feet upon reaching a common al titude at or above 29,000 feet. In fact, considerably greater differences have been found to be possible theoretically at these altitudes. As a consequence of this increase in altimeter error with increase in altitude, the safety inherent in the current quadrantal altitude rules actu ally diminishes as altitude is increased, thereby decreasing the margin of safety at the higher altitudes. Although a con siderable amount of research and devel opment is presently being done con cerning an improved instrument for measuring altitude, it undoubtedly will be some time before the development, manufacture, procurement, and installa tion of such an instrument is accom plished.
In order to increase this margin of safety, this amendment establishes high, altitude quadrantal rules which will ap ply to all flights conducted in the air space at 29,000 feet and above, .except Continued on p. 2097

CONTENTS
Agricultural Marketing Service Pase Proposed rule making;
Cucumbers grown in Florida__ 2187
Milk; in Shreveport, La., mar keting area______ i___ I ____ 2133
Prunes, dried ; produced in Cali fornia______ ,__ ___________ 2135
Rules and regulations;
Lemons grown in California and Arizona________________ +_2112
Milk; in marketing areas of:
Central Arkansas__________ 2102
Central Mississippi____ ____ 2121
Muskegon, Michigan_______ 2119
South Bend-La Porte, Indi ana__ _________________ 2113
Toledo, Ohio__________ - ___ 2104
Oranges, grapefruit, and tan gerines; grown in Florida 3
docum ents_____ _______2110-2112
Oranges grown in Arizona and designated part of Califor nia:
2103
N avel____________________
Valencia__________________
2104
Agriculture Department See Agricultural Marketing Serv ice.
Army Department See Engineers Corps.
Atomic Energy Commission Notices:
Work experience program for civilian application_________ 2139
Business and Defense Services Administration Rules and regulations:
Metalworking machines ; sched uling of deliveries__ ______ _ 2127
Civil Aeronautics Administra tion Rules and regulations :
Standard instrument approach procedures; alterations..___ 2097
Civil Aeronautics Board Notices:

Stern, Henry, Air Corp.; inter locking relationship; hearing. 2139
Rules and regulations:
Air traffic; high altitude quad rantal rules____ ___________ 2095
2095
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