Section 7 - Civil Aviation Order 48.1 Instrument 2019 - Determination of acclimatisation

7 Determination of acclimatisation

7.1 At the commencement of an FDP or an off-duty period at a location, an FCM must be considered to be acclimatised to the location if:

(a) the location differs in local time by less than 2 hours from the location where the FCM was last acclimatised; and

(b) the FCM has remained in an acclimatised state since he or she was last acclimatised.

Note AOC holders and FCMs should be aware that a determination of acclimatisation under this definition may impact on an individual’s body clock to a small degree. For guidance on acclimatisation, AOC holders and FCMs should refer to CAAP 48‑01.

7.2 At the commencement of an FDP or an off-duty period (a period) at a new location which differs in local time by 2 hours or more from the location where the FCM was last acclimatised (the original location), the FCM is considered to remain acclimatised to the original location if the period at the new location commences less than 36 hours after the FCM commenced a duty period at the original location.

7.3 At the commencement of an FDP or an off-duty period (a period) at a new location which differs in local time by 2 hours or more from the location where the FCM was last acclimatised (the original location), the FCM is considered to be in an unknown state of acclimatisation if the period at the new location commences 36 hours or more after the FCM commenced a duty period at the original location.

7.4 An FCM is considered to remain in his or her state of acclimatisation (whether acclimatised to a particular location, or in an unknown state of acclimatisation) until he or she has had:

(a) an adaptation period in a location (the adaptation location) in accordance with Table 7.1 in this subsection; or

(b) an adaptation period that is:

(i) in a location other than home base; and

(ii) in accordance with subparagraph (a); and

(iii) reduced by 12 hours for each previous off-duty period that:

(A) immediately preceded the adaptation period; and

(B) was taken at an off-duty location which differs in local time by less than 2 hours from the adaptation location; and

7.5 In applying Table 7.1 to arrive at an adaptation period for paragraph 7.4:

(a) determine the time zone displacement between:

(i) the location where the FCM was last acclimatised (the original location); and

(ii) each location where an FDP or off-duty period was commenced since last acclimatised (later locations); and

(b) then choose the time zone displacement between the original location and whichever of the later locations gives the greatest time zone displacement; and

<table cellspacing="0" cellpadding="0" style="width:92%; margin-left:31.45pt; margin-bottom:0pt; border-collapse:collapse"><tbody><tr><td style="width:33.34%; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.4pt; vertical-align:top">Time zone change (measured in time zones)</td><td colspan="2" style="border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.4pt; padding-left:5.03pt; vertical-align:top">Adaptation period to become acclimatised to new location (hours)</td></tr><tr><td style="width:33.34%; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.4pt; vertical-align:middle">Note See definition of time zone</td><td style="width:33.32%; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-left:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:middle">West</td><td style="width:33.34%; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; padding-right:5.4pt; padding-left:5.03pt; vertical-align:middle">East</td></tr><tr><td style="width:33.34%; border-right:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.4pt; vertical-align:middle">2</td><td style="width:33.32%; border-right:0.75pt solid #000000; border-left:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:middle">24</td><td style="width:33.34%; border-left:0.75pt solid #000000; padding-right:5.4pt; padding-left:5.03pt; vertical-align:middle">30</td></tr><tr><td style="width:33.34%; border-right:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.4pt; vertical-align:middle">3</td><td style="width:33.32%; border-right:0.75pt solid #000000; border-left:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:middle">36</td><td style="width:33.34%; border-left:0.75pt solid #000000; padding-right:5.4pt; padding-left:5.03pt; vertical-align:middle">45</td></tr><tr><td style="width:33.34%; border-right:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.4pt; vertical-align:middle">4</td><td style="width:33.32%; border-right:0.75pt solid #000000; border-left:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:middle">48</td><td style="width:33.34%; border-left:0.75pt solid #000000; padding-right:5.4pt; padding-left:5.03pt; vertical-align:middle">60</td></tr><tr><td style="width:33.34%; border-right:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.4pt; vertical-align:middle">5</td><td style="width:33.32%; border-right:0.75pt solid #000000; border-left:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:middle">48</td><td style="width:33.34%; border-left:0.75pt solid #000000; padding-right:5.4pt; padding-left:5.03pt; vertical-align:middle">60</td></tr><tr><td style="width:33.34%; border-right:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.4pt; vertical-align:middle">6</td><td style="width:33.32%; border-right:0.75pt solid #000000; border-left:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:middle">48</td><td style="width:33.34%; border-left:0.75pt solid #000000; padding-right:5.4pt; padding-left:5.03pt; vertical-align:middle">60</td></tr><tr><td style="width:33.34%; border-right:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.4pt; vertical-align:middle">7</td><td style="width:33.32%; border-right:0.75pt solid #000000; border-left:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:middle">72</td><td style="width:33.34%; border-left:0.75pt solid #000000; padding-right:5.4pt; padding-left:5.03pt; vertical-align:middle">90</td></tr><tr><td style="width:33.34%; border-right:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.4pt; vertical-align:middle">8</td><td style="width:33.32%; border-right:0.75pt solid #000000; border-left:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:middle">72</td><td style="width:33.34%; border-left:0.75pt solid #000000; padding-right:5.4pt; padding-left:5.03pt; vertical-align:middle">90</td></tr><tr><td style="width:33.34%; border-right:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.4pt; vertical-align:middle">9</td><td style="width:33.32%; border-right:0.75pt solid #000000; border-left:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:middle">72</td><td style="width:33.34%; border-left:0.75pt solid #000000; padding-right:5.4pt; padding-left:5.03pt; vertical-align:middle">90</td></tr><tr><td style="width:33.34%; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.4pt; vertical-align:middle">10 or more</td><td style="width:33.32%; border-right:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:middle">96</td><td style="width:33.34%; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.4pt; padding-left:5.03pt; vertical-align:middle">120</td></tr></tbody></table> ```

7Determination of acclimatisation

Get a plain-English read of 7