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--- leon:ftl-settings [2020/08/24 11:22]
rafal [FDP extension options]
+++ leon:ftl-settings [2022/12/27 18:25] (current)
marek [FDP extension options]
@@ Line 15: / Line 15: @@
 ===== Cumulative Duty Notification ====
-<box>**This function is available upon request - limits are customised by Leon Support depending on the operator's preferences. To set up a margin that triggers the facility, please contact Leon Support at [[support@leonsoftware.com]].**</box>
 **Cumulative Duty Notification** is a facility that **provides information** when cumulative duty is **close to the maximum level** (just before it is exceeded).
@@ Line 35: / Line 34: @@
 ===== FDP extension options =====
 [{{ :leon:ftl-settings:FDP+ in CREW.png?200|Option to plan FDP extension in CREW tab}}]
-It is possible to select an extension mode. In order to do that please contact [[support@leonsoftware.com]]
+It is possible to select an extension mode. In order to do that please contact us via [[http://support.leonsoftware.com/|Customer Portal]]
 Each of the modes will affect how 'FDP extensions' should work: whether it should apply manually or only in case of violation (default setting).
@@ Line 52: / Line 51: @@
 This will not affect any existing flights and assignments, but for all the new flights it will result in FDP+ being disabled by default, and will require manual selection of FDP+ checkbox for the extension to be enabled. However, if enabled, it will be applied regardless of any FDP violation or lack thereof.
 -------------------
+===== Crew days off =====
+There are **3 rules** that can be implemented for the purpose of days-off calculation:
+  * **Rule 1** - default, where a day off is one for which there are no flights, with the appropriate number of free nights
+  * **Rule 2** - day off is one for which there are no flights (Rule 1) and no duties defined in the roster
+  * **Rule 3** - day off is one for which there are no flights (Rule 1) and that day is marked as off in the roster
+These options will influence the way days-off are showing on FTL Sheet and Crew Duties screen.
+In order to choose any other rule but Rule 1, you should contact Leon Software Support.
+-------------------------
+===== Weekly Rest alternative options =====
+Most FTL regulations contain a requirement for scheduling an extended recovery recurrent rest period once every few days, usually called a **weekly rest**. For example:
+//"(…) minimum 36 continuous hours, including two consecutive recovery nights, in a seven-day period."//
+or, more precisely:
+//(…) weekly rest period, being a 36-hour period including two local nights, such that there shall never be more than 168 hours between the end of one weekly rest period and the start of the next.//
+It is reflected in Leon’s FTL Settings by weekly_rest_min_length (in this case, 36 hours) and weekly_rest_max_separation (in this case, 168 hours). Other settings can be used to specify whether the weekly rest should include local nights, or whether it can be reduced, or performed outside the crew member’s home base.
+However, this is rarely that simple. Some regulations allow for an alternative rest instead of the regular one, for example:
+//(…) rest periods will be extended at least//:
+  * //to the **36 hours** uninterrupted rest period including **2 local nights** in the course of **7 consecutive days**//, or
+  * //to the **60 hours** uninterrupted rest period including **3 local nights** in the course of **10 consecutive days**//
+which often leads to some confusion, especially in the case of alternating 36/60 “weekly” rest patterns.
+So far this has been implemented in Leon in a way that FTL would require the basic (36-hour) rest to happen within the first 7 days following the previous weekly rest. If such rest is not scheduled in that period, FTL starts to require the alternative (longer) extended rest period. It can be illustrated with the following example:
+{{:leon:reports:weekly rest 1.png?|}}
+<box>**This default behaviour can be summarised as follows: the more duty days are scheduled, the longer the following extended rest has to be.**</box>
+-------
+Recently, we encountered a **different phrasing of the weekly rest regulations**, suggesting that the opposite interpretation may actually be more appropriate:
+//Before beginning an FDP or standby, an FCM must have had at least 1 of the following://
+  * //in any consecutive 7-day period before the projected end of the assigned FDP or standby: 1 off-duty period of at least 36 consecutive hours, including 2 local nights//; **or**
+  * //in any consecutive 10-day period before the projected end of the assigned FDP or assigned standby: 1 off-duty period of at least 60 consecutive hours, including 3 local nights//.
+From the previous example, one can infer that the FDPs on 14-DEC and 15-DEC are actually not permitted, since there is neither a 36-hour rest in the previous 7 days (08-DEC–14-DEC) nor a 72-hours in the previous 10 days (05-DEC–14-DEC). The correct illustration would be as follows:
+{{:leon:reports:weekly rest2.png?|}}
+<box>**The new behaviour can be summarised as follows: the longer the weekly rest, the more duty days can be scheduled to follow it.**</box>
+This new “**forward**” mode of calculating weekly rest can be enabled by setting **//weekly_rest_alternative_forward//**. This will only affect the regulations with an additional “**alternative**” definition of a weekly rest. Please contact customer support for more information.
+-------
 ===== Particular settings explanation =====

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