Document ID: chunk:federal_register_of_legislation:F2016L01762:front:0:p15
Version: federal_register_of_legislation:F2016L01762
Segment Type: other
Provision Reference: 
Character Range: 38952–42624

by finding the associated risk element in column 2 of Table 1, which most closely describes that aspect of the aircraft being assessed. If an aircraft falls between 2 risk elements in any category, use the lower scoring element;
           (ii) select only 1 risk element in column 2 of Table 1 from each risk category in column 1 of Table 1;
           (iii) as each category and element is assessed, add the adjacent points score in column 3 of Table 1 to the aircraft score in column 4 of Table 1;
           (iv) when all risk categories and elements have been scored and a final total has been tallied, use the aircraft's total risk element score as determined under Table 1, to locate the applicable risk element score range in column 1 of Table 2;
           (v) subject to paragraph (b), assign the corresponding permit index number in column 2 of Table 2;
(b) if an aircraft's risk element score range as determined under Table 1 is within 5 points or less of the next lowest risk element score range shown in column 1 of Table 2 (the lower risk score) then the aircraft may be reassessed for a permit index number corresponding with the lower risk score if:
           (i) a written safety case is supplied which demonstrates how additional safety mitigations will be applied to the operation of the aircraft; and
           (ii) the safety case demonstrates how those mitigations will adequately manage risk to ensure a level of public safety that is commensurate to the lower permit index number being sought; and
           (iii) the safety case is acceptable to CASA or the relevant limited category organisation.
Note   For example, an aircraft's points score of 37 would be assigned a permit index number of 2, but may be upgraded to a permit index number of 1 if an acceptable safety case has been provided.
       (2) For subparagraph (1) (b) (ii), a safety case may demonstrate the effectiveness of proposed risk mitigations by means that include, but are not limited to, the provision of maps showing tracks and altitudes to be flown and evidence of emergency landing areas that can be accessed at any stage of the flight without placing public safety at risk.
       (3) For subparagraph (1) (b) (iii), a safety case must not be regarded as acceptable if it does nothing more than restate or alter risk factors which were assessed in determining the aircraft's total risk element score under Table 1.

Table 1 — Risk categories and elements worksheet

Risk Category                                                                                                                                                                                                                      Risk element                                                                                                                            Points      Total
(Column 1)                                                                                                                                                                                                                         (Column 2)                                                                                                                              (Column 3)  (Column 4)
Certification basis                                                                                                                                                                                                                Direct civil certificated equivalent aircraft                                                                                           60
Partial civil certificated equivalent – Engine or as determined by