Text in force at CAR3R-8: from CAR3R-0, effective 15 May 1956. OCR text
indicating system for air-cooled enegines. A cylinder head temperature indicator shall be provided for each engine on airplanes equipped with cowl flaps. In the case of airplanes which do not have cowl flaps, an indicator shall be provided if compliance with the provisions of § 3.581 is demonstrated ata speed in excess of the speed of best rate of climb.