> ## 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 16L

> ILS or localizer approach to Sydney runway 16L.

## Set up the approach

Tune **ISS ILS/DME, 110.9 MHz**, with final course **155°**. The ILS requires **DME or GNSS**; a localizer-only approach requires **DME**.

The profile shows an initial **4,000 ft** level segment through **TONUX**, at **14.5 ISS DME / 14.3 NM from the threshold**. Follow the **3° glidepath** through **RENAM**, at **5.3 ISS DME / 5.1 NM from the threshold**, with a path altitude of **1,700 ft**. Reference datum height is **52 ft**.

## Speeds and holding

Cross **RENAM at no less than 150 kt indicated airspeed**. ATC approach speed ranges are **160–185 kt at 10 NM from touchdown** and **150–160 kt at RENAM**. Holding is as directed by ATC.

## Glidepath descent checks

These are altitudes on the **3° ILS glidepath**, referenced to **ISS DME**.

| DME distance | Path altitude |
| - | - |
| 12.5 NM | 4,000 ft |
| 11 NM | 3,520 ft |
| 10 NM | 3,200 ft |
| 9 NM | 2,880 ft |
| 8 NM | 2,560 ft |
| 7 NM | 2,250 ft |
| 6 NM | 1,930 ft |
| 5.3 NM | 1,700 ft |
| 4 NM | 1,290 ft |
| 3.5 NM | 1,130 ft |
| 3 NM | 970 ft |
| 2 NM | 650 ft |
| 1.5 NM | 500 ft |

## Localizer-only descent

Observe these minimum altitudes until reaching each step-down point. They are separate from the glidepath check values.

| Segment ending at | Minimum altitude on the segment |
| - | - |
| 12.5 ISS DME | 3,000 ft |
| 5.3 ISS DME | 1,700 ft |
| 3.5 ISS DME | 1,000 ft |

After the last step-down point, observe the localizer minimum descent altitude below. The localizer missed approach point is **0.6 ISS DME**.

## Straight-in minima

These minima apply to categories **A, B, C and D**. Runway visual range (**RVR**) is in metres.

| Approach | Minimum altitude | Published height | Visibility / RVR |
| - | - | - | - |
| ILS | Decision altitude 220 ft | 204 ft above threshold | 0.8 km / 550 m RVR |
| Localizer | Minimum descent altitude 500 ft | 479 ft above aerodrome | 1.8 km |

## Missed approach

Track **155°**. At **600 ft**, turn **left** onto track **125°**. Climb to **3,000 ft**, or as directed by ATC.

## Parallel approaches

Sydney has **closely spaced parallel runways**. Simultaneous approaches are authorized with runway **16R** under the [precision runway monitoring instructions](https://www.narev.ai/docs/irl-gym/airports/sydney/charts/precision-runway-monitoring.md). **Dual VHF communications are required during PRM operations**. Transmit on tower and monitor both tower and PRM frequencies listed below. Aircraft may be radar vectored to final approach.

## Circling and alternate minima

**Circling is not authorized.**

| Category | Alternate ceiling | Alternate visibility |
| - | - | - |
| A and B | 1,269 ft | 4.4 km |
| C | 1,479 ft | 6.0 km |
| D | 1,479 ft | 7.0 km |

The chart also prints a **special alternate minimum of 700 ft / 2.5 km**.

## Frequencies

All frequencies are MHz.

| Service | Frequency |
| - | - |
| ATIS | 118.55 |
| Approach north | 124.4 |
| Approach south | 128.3 |
| Director east | 125.3 |
| Director west | 126.1 |
| PRM | 133.95 |
| Tower | 124.7 |
| Surface movement east of runway 16R/34L | 121.7 |
| Surface movement west of runway 16R/34L | 126.5 |

## Terrain and chart conventions

Use **QNH**. Bearings are magnetic, with **13° east** variation. Altitudes and elevations are feet above mean sea level unless identified as radio-altimeter readings or heights. The map scale is **1:500,000**. Aerodrome elevation is **21 ft**; runway 16L threshold elevation is **16 ft**.

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

The map labels obstacle and spot elevations of **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 **SSYII03-187**, 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/), SSYII03-187.


This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.