Figure 11-32.  Landing distance table.  a combined landing distance graph and allows compensation  for temperature, weight, headwinds, tailwinds, and varying  obstacle height. Begin by finding the correct OAT on the  scale on the left side of the chart. Move up in a straight  line to the correct pressure altitude of 4,000 feet. From this  intersection, move straight across to the first dark reference  line. Follow the lines in the same diagonal fashion until the  correct landing weight is reached. At 2,400 pounds, continue  in a straight line across to the second dark reference line.  Once again, draw a line in a diagonal manner to the correct  wind component and then straight across to the third dark  reference line. From this point, draw a line in two separate  directions: one straight across to figure the ground roll and  one in a diagonal manner to the correct obstacle height. This  should be 975 feet for the total ground roll and 1,500 feet for  the total distance over a 50 foot obstacle.  Stall speed performance charts are designed to give an  understanding of the speed at which the aircraft stalls in  a given configuration. This type of chart typically takes  into account the angle of bank, the position of the gear and  flaps, and the throttle position. Use  Figure 11-34  and the  accompanying conditions to find the speed at which the  airplane stalls.  First, locate the correct flap and gear configuration. The  bottom half of the chart should be used since the gear and  Figure 11-33.  Landing distance graph. 11-27  Stall Speed Performance Charts  Sample Problem 13  Note  LANDING DISTANCE Conditions  Gross  weight  lb  Ground roll  Total to clear  50 ft OBS  Approach speed IAS, MPH  At sea level & 59 °F  Flaps lowered to 40°  Power off  Hard surface runway  Zero wind  1,600 60 445 1,075 470 1,135 495 1,195 520 1,255 Ground roll  Total to clear  50 ft OBS  At 2,500 ft & 50 °F  Ground roll  Total to clear  50 ft OBS  At 5,000 ft & 41 °F  Ground roll  Total to clear  50 ft OBS  At 7,500 ft & 32 °F  1. Decrease the distances shown by 10% for each 4 knots of headwind.  2. Increase the distance by 10% for each 60 °F temperature increase above standard.  3. For operation on a dry, grass runway, increase distances (both “ground roll” and “total to clear 50 ft obstacle”) by 20% of the “total to clear 50 ft obstacle” figure. Power........................................................................ OFF Flaps....................................................................... Down Gear........................................................................ Down Angle of Bank............................................................. 45°  Reference line Reference line Reference line C –40° –30° –20° –10°  0°  10° 20°  30°  40° 50°  2,800  2,600  2,400  2,200  0  10  20  30  0  50  Outside air temperature  Weight  Wind component  Obstacle  (pounds)  (knots)  height (feet) F –40° –20° 0° 20° 40° 60° 80° 100° 120° 3,500  3,000  2,500  2,000  1,500  1,000  500  Guide lines not applicable for Intermediate  Tailwind  Headwind Pressure altitude (feet)  Obstacle heights Weight  (pounds)  kts  MPH  Speed  at 50 feet  2,950  2,800  2,600  2,400  2,200  70  68  65  63  60  80  78  75  72  69  Associated conditions  Power  Retarded to maintain  900 feet/on final approach  Flaps Down Landing gear  Down  Runway  Paved, level, dry surface  Approach speed  IAS as tabulated  Braking Maximum 10,000 8,000 6,000 2,000 4,000 S.L.  ISA 