For Sample Questions Only) TABLE 1 - SAE TYPE I FLUID HOLDOVER GUIDELINES FOR WINTER

Transcription

1 For Sample Questis Only) TABLE 1 SAE TYPE I FLUID HOLDOVER GUIDELINES FOR WINTER THE RESPONSIBILITY FOR THE APPLICATION OF THESE DATA REMAINS WITH THE USER OAT C F 3 and abov e w 3 to 6 w 6 to 1 w 1 27 and abov e w 27 to 21 w 21 to 14 w 14 Frost 2 Approximate Holdover Times Under Various Weather Cditis (minutes) n g Fog Very w w Modera te w n g Drizzle 3 n g Cold Soake d Wi Othe r 4 CAUTION: No holdover time guidelines exist C = Degrees Celsius F = Degrees Fahrenheit OAT = Outside Air Temperature FP = Point NOTES 1 To use these times, the fluid must be heated to a minimum temperature providi 6 C (14 F) at the nozzle and an average rate of at least 1 L/m 2 (2 gal./1 sq. ft.) must be applied to deiced surfaces, OTHERWISE TIMES WILL BE SHORTER. 2 Duri cditis that apply to aircraft protecti for ACTIVE FROST. 3 Use light freezi rain holdover times if positive identificati of freezi

2 drizzle is not possible. 4 Heavy snow, snow pellets, ice pellets, moderate and heavy freezi rain, and hail. 5 Type I Fluid/Water Mixture is selected so that the FP of the mixture is at least 1 C (18 F) w OAT. CAUTIONS The time of protecti will be shortened in heavy weather cditis, heavy precipitati rates, or high moisture ctent. High wind velocity or jet blast may reduce holdover time w the lowest time stated in the rae. Holdover time may also be reduced when aircraft skin temperature is lower than OAT. The ly acceptable decisi criteria time is the shortest time within the applicable holdover time table cell. Fluids used duri ground deici do not provide ice protecti duri flight.

3 (For Sample Questis Only) TABLE 2 SAE TYPE II FLUID HOLDOVER GUIDELINES FOR WINTER THE RESPONSIBILITY FOR THE APPLICATION OF THESE DATA REMAINS WITH THE USER OAT C F to 3 w 3 to to 27 w 2 7 to 7 Type II Fluid Ccentrati Neat Fluid/Water (Vol%/Vol%) 1/ Approximate Holdover Times Under Various Weather Cditis (hours:minutes) Fros t 2 12: 75/25 6: 5/5 4: 1/ 8: 75/25 5: 5/5 3: 1/ 8: 75/25 5: Fog :35 1:3 :25 1: :15 :3 :35 1:3 :25 1: :15 :3 :2 1:5 :2 :55 w :2 :55 :15 :4 :5 :15 :2 :45 :15 :3 :5 :15 :15 :35 :15 :25 Drizzle 4 :3 :55 :2 :45 :5 :15 :3 :55 :2 :45 :5 :15 :15 :45 3 :15 :3 3 :15 :3 :1 :25 :5 :1 :15 :3 :1 :25 :5 :1 :1 :25 3 :1 :2 3 Cold Soake d Wi :5 :4 :5 :25 Othe r 5 CAUTION: No holdover time guidelines exist

4 w 14 to 25 w 25 w 7 to 13 w 13 1/ 8: 1/ :15 :2 :15 :3 Type II fluid may be used w 25 C (13 F) provided the freezi point of the fluid is at least 7 C (13 F) w the OAT and the aerodynamic acceptance criteria are met. Csider use of Type I when Type II fluid cannot be used. C = Degrees Celsius F = Degrees Fahrenheit OAT = Outside Air Temperature Vol = Volume NOTES 1 Based tests of neat fluids with the lowest viscosity deliverable the aircraft, yet meeti Type II WSET and HHET. 2 Duri cditis that apply to aircraft protecti for ACTIVE FROST. 3 The lowest use temperature is limited to 1 C (14 F). 4 Use light freezi rain holdover times if positive identificati of freezi drizzle is not possible. 5 Heavy snow, snow pellets, ice pellets, moderate and heavy freezi rain, and hail. 6 w includes snow grains. 7 Ensure that the lowest operatial use temperature (LOUT) is respected. CAUTIONS The time of protecti will be shortened in heavy weather cditis, heavy precipitati rates, or high moisture ctent. High wind velocity or jet blast may reduce holdover time w the lowest time stated in the rae. Holdover time may also be reduced when aircraft skin temperature is lower than OAT. The ly acceptable decisi criteria time is the shortest time within the applicable holdover time table cell. Fluids used duri ground deici do not provide ice protecti duri flight.

5 For Sample Questis Only) TABLE 3 SAE TYPE IV FLUID HOLDOVER GUIDELINES FOR WINTER THE RESPONSIBILITY FOR THE APPLICATION OF THESE DATA REMAINS WITH THE USER OAT C F to 3 w 3 to to 27 w 2 7 to 7 Type IV Fluid Ccentrati Neat Fluid/Water (Vol%/Vol%) 1/ Approximate Holdover Times Under Various Weather Cditis (hours:minutes) Fros t 2 18: 75/25 6: 5/5 4: 1/ 12: 75/25 5: 5/5 3: 1/ 12: 75/25 5: Fog 1:5 2:15 1:5 1:45 :15 :35 1:5 2:15 1:5 1:45 :15 :35 :2 1:2 :25 :5 w :35 1:5 :3 1:5 :5 :2 :3 :55 :25 :5 :5 :15 :2 :4 :2 :35 Drizzle 4 :4 1:1 :35 :5 :1 :2 :4 1:1 :35 :5 :1 :2 :2 :45 3 :15 :3 3 :25 :4 :15 :3 :5 :1 :25 :4 :15 :3 :5 :1 :1 :25 3 :1 :2 3 Cold Soake d Wi :1 :5 :5 :35 Othe r 5 CAUTION: No holdover time guidelines exist

6 w 14 to 25 w 7 to 13 1/ 12: :15 :4 :15 :3 w 25 w 13 1/ Type IV fluid may be used w 25 C (13 F) provided the freezi point of the fluid is at least 7 C (13 F) w the OAT and the aerodynamic acceptance criteria are met. Csider use of Type I when Type IV fluid cannot be used. C = Degrees Celsius F = Degrees Fahrenheit OAT = Outside Air Temperature Vol = Volume NOTES 1 Based tests of neat fluids with the lowest viscosity deliverable the aircraft, yet meeti Type IV WSET and HHET. 2 Duri cditis that apply to aircraft protecti for ACTIVE FROST. 3 The lowest use temperature is limited to 1 C (14 F). 4 Use light freezi rain holdover times if positive identificati of freezi drizzle is not possible. 5 Heavy snow, snow pellets, ice pellets, moderate and heavy freezi rain, and hail. 6 w includes snow grains. 7 Ensure that the lowest operatial use temperature (LOUT) is respected. CAUTIONS The time of protecti will be shortened in heavy weather cditis, heavy precipitati rates, or high moisture ctent. High wind velocity or jet blast may reduce holdover time w the lowest time stated in the rae. Holdover time may also be reduced when aircraft skin temperature is lower than OAT. The ly acceptable decisi criteria time is the shortest time within the applicable holdover time table cell. Fluids used duri ground deici do not provide ice protecti duri flight.

7 For Sample Questis Only) TABLE 4 VISIBILITY IN SNOW VS. SNOWFALL INTENSITY CHART 1 i Darkness Daylight Temperature Rae Visibility in w (Statute Miles) ºC ºF Heavy Moderate Very 1 and 3 and Below 1 Below 3 3/4 1 and 3 and Below 1 Below 3 3/8 1 > 1 to 2½ > 2½ to 4 > 4 > 3/4 to 1½ > 1½ to 3 > 3 ½ > ½ to 1½ > 1½ to 3 > 3 > 3/8 to 7/8 > 7/8 to 2 > 2