# Resvrule=\<param\>

**URL:** <https://forum.navigraph.com/t/resvrule-param/18937>\
**Category:** API\
**Created:** [March 7, 2025, 4:40pm UTC](https://forum.navigraph.com/t/resvrule-param/18937 "2025-03-07T16:40:50Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![oskrypuch](https://avatars.discourse-cdn.com/v4/letter/o/3ec8ea/32.png) [@oskrypuch](https://forum.navigraph.com/u/oskrypuch)\
**Post date:** [March 7, 2025, 4:40pm UTC](https://forum.navigraph.com/t/resvrule-param/18937/1 "2025-03-07T16:40:50Z")

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_param_ can be a number in minutes.

From some posts, there is a suggestion that a textual reserve fuel export string is also supported. The API docs only mentions minutes, I could just poke around and try _domestic_, _flag_, _B043_, etc., but …

Can someone post a list of what is known to work?

\* Orest

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<div class="post-metadata">

**Author:** ![SimBrief](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.navigraph.com/simbrief/32/4850_2.png) [@SimBrief](https://forum.navigraph.com/u/SimBrief)\
**Post date:** [March 10, 2025, 1:44am UTC](https://forum.navigraph.com/t/resvrule-param/18937/2 "2025-03-10T01:44:28Z")

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Hi Orest,

Here are the possible values for `resvrule`:

| Value | Description |
| --- | --- |
| auto | 30 minutes for jets, 45 minutes for props |
| 0 | No reserve fuel |
| 30, 45, etc. | Custom reserve fuel, in minutes |
| faa | FAA auto (domestic or flag depending on the airports) |
| 45/0 | FAA domestic (45 minutes) |
| 30/0.10 | FAA flag (30 minutes plus 10%) |
| b043 | FAA OpSpec B043 (45 minutes + 10% of the time in Class II airspace) |
| b343 | FAA OpSpec B343 (as described [here](https://forum.navigraph.com/t/acf-field-in-the-fuel-tree/14203/15)) |

When it comes to the `b343` option, you can/should specify a custom PBCF fuel amount using the following additional parameters:

```plaintext
&resvrule=b343&addedfuel=10&addedfuel_units=min&addedfuel_label=ACF90

```

`addedfuel` is the amount of PBCF fuel in minutes, `addedfuel_label` can be either `ACF90` or `ACF99`.

Best regards,

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<div class="post-metadata">

**Author:** ![oskrypuch](https://avatars.discourse-cdn.com/v4/letter/o/3ec8ea/32.png) [@oskrypuch](https://forum.navigraph.com/u/oskrypuch)\
**Post date:** [March 11, 2025, 10:04pm UTC](https://forum.navigraph.com/t/resvrule-param/18937/3 "2025-03-11T22:04:09Z")

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Perfect, thanks much!

\* Orest

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<div class="post-metadata">

**Author:** ![oskrypuch](https://avatars.discourse-cdn.com/v4/letter/o/3ec8ea/32.png) [@oskrypuch](https://forum.navigraph.com/u/oskrypuch)\
**Post date:** [March 12, 2025, 9:30pm UTC](https://forum.navigraph.com/t/resvrule-param/18937/4 "2025-03-12T21:30:11Z")

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OK, so now how do you set FOD? I need 75 mins for B343.

\* Orest

---

<div class="post-metadata">

**Author:** ![SimBrief](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.navigraph.com/simbrief/32/4850_2.png) [@SimBrief](https://forum.navigraph.com/u/SimBrief)\
**Post date:** [March 13, 2025, 2:00am UTC](https://forum.navigraph.com/t/resvrule-param/18937/5 "2025-03-13T02:00:25Z")

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You can do that with the following:

```plaintext
&minfod=75&minfod_units=min

```

Best regards,

---

<div class="post-metadata">

**Author:** ![oskrypuch](https://avatars.discourse-cdn.com/v4/letter/o/3ec8ea/32.png) [@oskrypuch](https://forum.navigraph.com/u/oskrypuch)\
**Post date:** [March 16, 2025, 3:22am UTC](https://forum.navigraph.com/t/resvrule-param/18937/6 "2025-03-16T03:22:10Z")

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Perfect, thanks again.

\* Orest

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<div class="post-metadata">

**Author:** ![system](https://europe1.discourse-cdn.com/flex013/uploads/navigraph1/original/1X/4cc83e90d70ab312b1bd2d7527bddad309607265.png) [@system](https://forum.navigraph.com/u/system)\
**Post date:** [March 23, 2025, 3:22am UTC](https://forum.navigraph.com/t/resvrule-param/18937/7 "2025-03-23T03:22:47Z")

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