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EA:  AIRCRAFT_ICING_INTENSITY

Status: STD 2005/06/07
Code: 72
Concept definition: The estimated intensity of the accumulation of <ICE> on exposed <SURFACE>s of an <AIRCRAFT> that is formed as the <AIRCRAFT> is flown through supercooled drops of <WATER> in <CLOUD>s and/or <PRECIPITATION>.
 
Attribute value type: ENUMERATION
Reference type: IR
Reference: [AIM, 7-1-22, b]
Supplemental references: [JMCDM, "AIRCRAFT-ICING-ANALYSIS-FORECAST icing intensity code" and "AIRCRAFT-ICING-OBSERVATION icing intensity code"]
Enumerants (presented in a natural order)
Status Attribute label Enumerant label Concept definition Code Ref type ▾ Reference Supplemental references
STD
2005/06/07		 AIRCRAFT_ICING_INTENSITY LIGHT The rate of accumulation may create a problem if flight is prolonged in this environment (over 1 hour); light. Occasional use of de-icing/anti-icing <EQUIPMENT> removes/prevents accumulation. Icing does not present a problem if the de-icing/anti-icing <EQUIPMENT> is used. 5 IR [AIM, 7-1-22, b, 2] [WMO306, Volume I.2, Part B, Code table 0-20-041:1]
STD
2005/06/07		 AIRCRAFT_ICING_INTENSITY MODERATE The rate of accumulation is such that even short encounters become potentially hazardous; moderate. Use of de-icing/anti-icing <EQUIPMENT> and/or flight diversion is necessary. 8 IR [AIM, 7-1-22, b, 3] [WMO306, Volume I.2, Part B, Code table 0-20-041:4]
SUBM
2009/06/04		 AIRCRAFT_ICING_INTENSITY NOT_SPECIFIED Not specified.   IR [JMBL, "icing intensity":5]  
STD
2005/06/07		 AIRCRAFT_ICING_INTENSITY SEVERE The rate of accumulation is such that de-icing/anti-icing <EQUIPMENT> fails to reduce or control the hazard; severe. Immediate flight diversion is necessary. 11 IR [AIM, 7-1-22, b, 4] [WMO306, Volume I.2, Part B, Code table 0-20-041:7]
STD
2005/06/07		 AIRCRAFT_ICING_INTENSITY TRACE The rate of accumulation becomes perceptible; trace. The rate of accumulation is slightly greater than the rate of sublimation. It is not hazardous even though de-icing/anti-icing <EQUIPMENT> is not utilized unless encountered for an extended period of time (over 1 hour). 2 IR [AIM, 7-1-22, b, 1] [WMO306, Volume I.2, Part B, Code table 0-20-041:10]
STD
2005/06/07		 AIRCRAFT_ICING_INTENSITY LIGHT_IN_CLOUD <<<LIGHT>>> icing occurring in <CLOUD>s. 6 PR [WMO306, Volume I.2, Part B, Code table 0-20-041:2]  
STD
2005/06/07		 AIRCRAFT_ICING_INTENSITY LIGHT_IN_PRECIP <<<LIGHT>>> icing occurring in <PRECIPITATION>. 7 PR [WMO306, Volume I.2, Part B, Code table 0-20-041:3]  
STD
2005/06/07		 AIRCRAFT_ICING_INTENSITY MODERATE_IN_CLOUD <<<MODERATE>>> icing occurring in <CLOUD>s. 9 PR [WMO306, Volume I.2, Part B, Code table 0-20-041:5]  
STD
2005/06/07		 AIRCRAFT_ICING_INTENSITY MODERATE_IN_PRECIP <<<MODERATE>>> icing occurring in <PRECIPITATION>. 10 PR [WMO306, Volume I.2, Part B, Code table 0-20-041:6]  
STD
2005/06/07		 AIRCRAFT_ICING_INTENSITY NO_ICING No icing. 1 PR [WMO306, Volume I.2, Part B, Code table 0-20-041:0]  
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