> ## 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.

# ILS or localizer approach to Sydney runway 25

> ILS or localizer approach to Sydney runway 25.

## Set up the approach

Tune **ISW ILS/DME, 109.7 MHz**, with final approach course **242°**. The ILS requires **DME or GNSS**; a localizer-only approach requires **DME**. Aircraft may be radar vectored to the final approach.

JELLI is **10 ISW DME** and **9.8 NM from the threshold**. PEGBA is **5 ISW DME** and **4.8 NM from the threshold**. Use **ISW DME** for the descent checks and localizer step-down points below.

## Final approach

The profile shows a **3,000 ft** level segment into JELLI, followed by a **3° glidepath on 242°**. The path altitude at PEGBA is **1,610 ft**. Reference datum height is **48 ft**.

| ISW DME | Altitude on the 3° path |
| - | - |
| 9.4 NM | 3,000 ft |
| 9 NM | 2,880 ft |
| 8 NM | 2,560 ft |
| 7 NM | 2,240 ft |
| 6 NM | 1,920 ft |
| 5 NM, PEGBA | 1,610 ft |
| 4 NM | 1,290 ft |
| 2.9 NM | 940 ft |
| 2.2 NM | 710 ft |
| 2 NM | 650 ft |
| 1.8 NM | 580 ft |

## Localizer-only descent

Observe these minimum altitudes until reaching each step-down point. The path altitudes above are separate descent checks.

| Segment ending at | Minimum altitude on the segment |
| - | - |
| 5 ISW DME, PEGBA | 1,500 ft |
| 2.9 ISW DME | 900 ft |
| 2.2 ISW DME | 710 ft |
| From 2.2 ISW DME to the missed approach point | 580 ft minimum descent altitude |

The localizer missed approach point is **1.2 ISW DME**. The chart labels the 2.9 ISW DME step as **2.8 NM from the threshold**, and the 2.2 ISW DME step as **2 NM from the threshold**. These are the printed pairs; use the specified DME step-down distances rather than applying a single offset to all values.

## Straight-in minima

These minima apply to categories **A, B, C and D/DL**.

| Approach | Minimum altitude | Published height | Visibility |
| - | - | - | - |
| ILS | Decision altitude 230 ft | 210 ft above threshold | 1.5 km; 1,500 m runway visual range (RVR) |
| Localizer | Minimum descent altitude 580 ft | 559 ft above aerodrome | 3.2 km |

A special alternate minimum of **700 ft / 2.5 km** is printed. It **does not apply to the localizer/DME approach**.

## Missed approach

Track **242°** and climb to **3,000 ft**, or as directed by ATC.

## Speeds and holding

Cross **JELLI at no more than 185 kt indicated airspeed** and **PEGBA at no less than 150 kt**. The chart’s ATC approach speed ranges are **160–185 kt at JELLI** and **150–160 kt at PEGBA**. Holding is as directed by ATC; the chart does not specify a holding pattern.

## Circling and alternate minima

Do not circle **beyond 3 DME from SY, east of runway 16R and north of runway 25**. The distance for this restriction is from **SY DME**, not the runway threshold or the approach’s distance reference.

| Aircraft category | Circling minimum altitude | Height above aerodrome | Visibility | Alternate ceiling / visibility |
| - | - | - | - | - |
| A and B | 790 ft | 769 ft | 2.4 km | 1,269 ft / 4.4 km |
| C | 1,000 ft | 979 ft | 4.0 km | 1,479 ft / 6.0 km |
| D/DL | 1,000 ft | 979 ft | 5.0 km | 1,479 ft / 7.0 km |

## Frequencies

All radio frequencies are MHz.

| Service | Frequency |
| - | - |
| ATIS | 118.55 |
| Approach north | 124.4 |
| Approach south | 128.3 |
| Director east | 125.3 |
| Director west | 126.1 |
| Tower | 120.5 |
| Surface movement east of runway 16R/34L | 121.7 |
| Surface movement west of runway 16R/34L | 126.5 |

## Terrain and chart conventions

Use **QNH**. Altitudes and elevations are feet above mean sea level; tracks are magnetic. The chart shows **13° east** magnetic variation and a **1:500,000** map scale. Aerodrome elevation is **21 ft** and runway 25 threshold elevation is **20 ft**.

The **25 NM minimum sector altitude is 2,700 ft** and the **10 NM minimum sector altitude is 2,100 ft**, both centred on the **YSSY aerodrome reference point**.

The map’s labelled obstacle and spot elevations are **160, 190, 250, 255, 259, 299, 306, 320, 385, 389, 421, 430, 545, 641, 677, 725, 862, 887, 894, 1,001, 1,074 and 1,085 ft**. Their geographic placement still requires a complete text description.

Chart **SSYII06-187**, revised **9 July 2026**, from the fixed publication cycle effective **3 September 2026**.

Source: © Airservices Australia, [Departure and Approach Procedures](https://www.airservicesaustralia.com/aip/current/dap/), SSYII06-187.


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