Taxiing Aircraft As a general rule, only rated pilots and qualified airframe and powerplant (A&P) technicians are authorized to start, run up, and taxi aircraft. All taxiing operations are performed in accordance with applicable local regulations. Figure 1 contains the standard taxi light signals used by control towers to control and expedite the taxiing of aircraft. The following section provides detailed instructions on taxi signals and related taxi instructions. Lights Meaning Flashing green Cleared to taxi Steady red Stop Flashing red Taxi clear of runway in use Flashing white Return to starting point Alternating red and green Exercise extreme caution Figure 1. Standard taxi light signals Taxi Signals Many ground accidents have occurred as a result of improper technique in taxiing aircraft. Although the pilot is ultimately responsible for the aircraft until the engine is stopped, a taxi signalman can assist the pilot around the flight li...
Read in another language Watch this page Edit For punches used in punch presses, see Punching . Learn more This article has multiple issues. Please help improve it or discuss these issues on the talk page . Engraving punch A punch is a hard metal rod with a sharp tip at one end and a blunt butt end at the other, which is usually struck by a hammer . Typically, woodworkers use a ball-peen hammer to strike a punch. Use Edit Punches are used to drive objects such as nails , or to form an impression of the tip on a workpiece. Decorative punches may also be used to create a pattern or even form an image.[ citation needed ] Pin Edit Pin punch Metal pins and similar connectors are driven in or out of holes using a pin punch. For removal, first use a starter punch to loosen the pin, then use a pin punch to finish. Center Edit Centre punch A center punch is used to mark the center of a point. It is usually used to mark the center of a hole when drilling holes. A drill has the tenden...
The surface area of a cone whose flat is 10 cm and diameter is 8 cm is a) 80 p Ans. b) 40 p c) 120 p (A + B)4 is (A + B) 2 Ans. a) (A + B) 2 b) A + B c) (A + B) 6 An equilateral triangle has a) 2 equal sides b) no equal sides Ans. c) 3 equal sides 4 3/8 – 2 1/4 + 1/8 = a) 2 1/8 b) 2 1/2 Ans. c) 2 1/4 11/16 + 5/8 = a) 55/128 Ans. b) 21/16 c) 10/11 Given 43 - x = 21, find the value of x Ans. a) 43 - 21 b) 43 + 21 c) 43 / 21 ¾ multiplied by 0.82 is equal to a) 1.23 Ans. b) 0.615 c) 2.46 7/6 can be expressed as a) 2.6 b) 1.6 Ans. c) 1.166 The ratio of 6:5 can be expressed as a) 20: 25 Ans. b) 24: 20 c) 10: 16 In a right-angled triangle the other two angles are both 45°. The length of the opposite side can be calculated by Ans. a) sin 45° x length of the hypotenuse side of the triangle b) cos 45° x length of the adjacent side of the triangle c) sin 45° x length of the adjacent side of the triangle Calculate (+ 3) - (- 4) a) -1 ...
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