> ## Documentation Index
> Fetch the complete documentation index at: https://www.narev.ai/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Flight-planning example: Sydney to Canberra

> A worked simulator example showing route selection, FMC legs and performance assumptions.

This worked flight-planning example connects Sydney to Canberra in the Boeing 737-800. It shows how the route, navigation-data observations and scenario assumptions fit together; it is not a flight plan for every run. It does not include weather, wind or an ATC clearance. The source plan states that those inputs are not available through its tools; obtain any required clearance from the user rather than treating the route as a clearance.

## Route

| Item | Value |
| - | - |
| Departure | YSSY, runway 16R |
| SID | GROOK2, transition WOL |
| Enroute | WOL, then airway H65 to LEECE, CB (Canberra VOR) |
| Arrival | YSCB, runway 35 |
| Approach | ILS Y 35 (`I35-Y`); the STAR is LECE1W |
| Cruise altitude | FL220 |
| Alternate | none planned |

Waypoints (latitude, longitude):

| Fix | Latitude | Longitude |
| - | - | - |
| YSSY (reference point) | -33.9461 | 151.1772 |
| WOL | -34.5579 | 150.7910 |
| LEECE | -35.0542 | 149.9604 |
| CB | -35.2814 | 149.1957 |
| YSCB (reference point) | -35.3069 | 149.1950 |

The source records these FMC legs from a check on the aircraft using navigation-data cycle **2610**:

* Departure: (500), DUNES, DEENA, GROOK, OLVAG (6000 A), ISBEX (270 B), WOL.
* WOL to LEECE is a direct leg of about 50 NM. The FMC leaves a `ROUTE DISCONTINUITY` there until LECE is inserted after WOL.
* Arrival: LEECE, AKLIM (9000 A), EKASA (7000 A), SLICK (6000 A), FOXLO (6000 A), MOMBI (4760 A), DAMKO (3140), RW35 (1919), then the missed approach.

The [GROOK Two chart](https://www.narev.ai/docs/irl-gym/airports/sydney/charts/grook-two-runway-16r-departure.md) supplies the published tracks, crossing restrictions and speeds for this departure. Its initial right turn is “as soon as practicable”; the `(500)` item above is the recorded FMC leg, not a separately stated turn-altitude restriction on that chart.

The recorded simulator navigation data has SID **GROOK2**, not GROOK1. A route file saved against an older cycle may still say GROOK1. The discontinuity note above calls the inserted fix `LECE`, while the route table names `LEECE`; check the actual FMC selection and route display rather than assuming those labels are interchangeable.

## Scenario performance assumptions

These values are scenario assumptions, not values taken from an operational flight plan (OFP).

| Item | Value | Note |
| - | - | - |
| Cruise altitude | FL220 | The route file puts WOL at 22 000 ft. |
| Cost index | 30 | Assumed. It only changes VNAV speeds. |
| Reserves | 2.0 | In thousands of pounds, the unit the FMC uses. |
| Takeoff flaps | 5 | |
| Takeoff CG | from the load sheet, about 23 % MAC | `takeoff-data.actual-cg` shows the real value. |
| Takeoff speeds and trim | from the FMC | Accept the suggested V1, VR and V2 on TAKEOFF REF; the trim is `takeoff-data.trim-calculated`. |

## FMC units

The FMC works in thousands of pounds, not kilograms. Convert from the airplane readings:

* ZFW (thousand lb) = (`takeoff-data.gross-weight` - `takeoff-data.fuel-total`) x 2.2046 / 1000
* For example 57 159 kg is `126.0`; 5171 kg of fuel is `11.4`.

## Load in the cold-and-dark scenario

About 5.2 t of fuel and a gross weight of about 62.3 t (ZFW about 57.2 t). Read the current values from `takeoff-data` before you use them.

## Arrival naming across snapshots

The recorded simulator plan pairs `LECE1W` with ILS Y runway 35. The published [LEECE One Whiskey chart](https://www.narev.ai/docs/irl-gym/airports/canberra/charts/leece-one-whiskey-and-yankee-jet-arrivals.md) in this collection continues to **RNP W runway 35 (AR)**. The [Alpha chart](https://www.narev.ai/docs/irl-gym/airports/canberra/charts/leece-one-alpha-jet-arrival.md) includes an ILS continuation. These are different source snapshots; verify the installed FMC route and assigned approach instead of silently combining the branches.

## Approach and airport references

Use the [Canberra ILS-Y runway 35 reference](https://www.narev.ai/docs/irl-gym/airports/canberra/charts/ils-y-or-loc-y-runway-35.md), [Canberra airport procedures](https://www.narev.ai/docs/irl-gym/airports/canberra.md), and [Sydney airport procedures](https://www.narev.ai/docs/irl-gym/airports/sydney.md) alongside the assigned flight. The chart collection is a separate fixed snapshot; reconcile it with the installed navigation data.

Source: IRL Gym’s Sydney–Canberra scenario flight plan.


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