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RTZL Runway Touchdown Zone Lights
SALS Simple Approach Lighting System
SFL Sequenced Flashing Lights
STWL Stopway Light(s)
T -VASIS T pattern Visual Approach Slope Indicator System
Taxiways Centreline lights are green and edge lights are blue
23.2 Lights may be described by the following abbreviations:
ALTN Alternating
B Blue
FLG Flashing
G Green
GP FLG (number) Group flashing (number)
OCC Occulting
R Red
W White
Y Yellow
23.3 Lighting provided by kerosene lamps may not be available during fire ban periods, except
in emergencies.
23.4 Operation of VHF Pilot Activated Lighting (PAL)
a. ON DEPARTURE: Before taxi
b. ON ARRIVAL: Within 15 NM of AD, and at or ABV LSALT select the appropriate
VHF FREQ:
3 SEC 3 SEC 3 SEC
1 SEC 1 SEC
(i) Transmit pulse must be between 1 and 5 SECS
(ii) Three pulses must be transmitted within 25 SECS. Ensure that the third pulse
ends before the 25th second.
(iii) Break between transmissions can be more or less than 1 SEC - (no limit)
Lights to illuminate for a minimum of 30 MINS. If not
- keep transmitting 3 SEC pulses
- check frequency
(iv) When runway lights are about to extinguish, the wind indicator light will flash
continuously. REPEAT OPERATING PROCEDURE.
23.5 Aerodrome Frequency Response Unit With PAL Option (AFRU + PAL)
a. PAL operation may be provided as an optional function of the AFRU (see CTAF
section) on the associated aerodrome CTAF. Aerodrome lighting enabled by AFRU
+ PAL is AVBL only during night hours or at other times of low natural light levels.
During periods of daylight, when the light intensity is above a preset level, the system
will not activate the lights.
b. Where a discrete PAL FREQ is also provided, actuation of the aerodrome lights may
be effected either by using the PAL system on the discrete PAL FREQ or the AFRU
+ PAL system on the CTAF.
c. On receipt of the required ACFT transmission the AFRU will operate the aerodrome
lighting circuitry (RWY and wind indicator lights).The AFRU will transmit the standard
reply (the aerodrome name and CTAF) immediately followed by the additional
confirming message, "RUNWAY LIGHTS ON". If the lights do not illuminate, the
AFRU will transmit the message, "NO RUNWAY LIGHTS". In this case, pilots should
key the required transmission again or, alternatively, change to the PAL FREQ and
operate the lights via the PAL.
© Airservices Australia, 2005 Licensed to: Preview Licence MyAIP678901234567890 SeqId
ERSA INTRODUCTION 24-Nov-2005 INTRO - 14
d. AFRU + PAL required transmission is:
1 SEC MAX 1 SEC MAX 1 SEC MAX
1 SEC MAX 1 SEC MAX
e. After actuation, the aerodrome lights will remain illuminated for 30 minutes. After 20
minutes, the windsock lights will flash at 1 second intervals and the AFRU will transmit
the message, "RUNWAY LIGHTS 10 MINUTES REMAINING". At any time, keying
of the required transmission will reset the lights for a period of 30 minutes.
f. Aerodromes which have the AFRU + PAL option will have the entry "AFRU + PAL"
included under the "LIGHTING" heading.
23.6 T-VASIS/AT-VASIS
a. The T-VASIS consists of twenty light units symmetrically disposed about the RWY
centre line in the form of two wing bars of four light units each, with bisecting
longitudinal lines of six lights.
b. The AT-VASIS consists of ten light units arranged on one side of the RWY in the
form of a single wing bar of four light units with a bisecting longitudinal line of six
lights.
c. The cross-bar represents 'on glide-slope' and deviations appear as one, two or three
lights ABV or BLW the crossbar. The sensitivity is similar to flying within the
'three-dot-up' or 'three-dot-down' positions of an ILS glidepath.
d. The T-VASIS is designed so that with only the cross-bar lights visible, the glide-slope
is 3DEG and the pilot's eye-height over the THR is APPROX 47 FT. The height
quoted in FT is the MNM EYE HEIGHT at THR, i.e. the lowest height at which an
"on glidepath" indication will be seen. If increased eye-height over the THR is required
(e.g. long/wide bodied ACFT) this can be achieved by flying the approach with the
cross-bar and one or more of the 'fly-down' lights visible as required. In this manner
variable vertical distances between the pilot's eyes and the THR can be obtained.
e. APPROACH SLOPE INDICATION EYE HEIGHT ABOVE THRESHOLD
I THREE LIGHTS FLY UP Ground level to 7FT
I TWO LIGHTS FLY UP 8FT to 25FT
I ONE LIGHT FLY UP 25FT to 41FT
I ON GLIDE SLOPE 49FT
I ONE LIGHT FLY DOWN 57FT to 75FT
I TWO LIGHTS FLY DOWN 75FT to 94FT
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