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a third integrity test; thereby, producing an approach
aid which has integrity capable of providing Level 3
service.
3. The remote status sensing unit, when
installed in the tower cab, will give immediate
indications of localizer out‐of‐tolerance conditions.
The alarm in the FFM remote status sensing unit
indicates an inoperative or an out‐of‐tolerance
localizer signal; e.g., the course may have shifted due
to equipment malfunction or vehicle/aircraft
encroachment into the critical area.
b. Procedures.
1. Operation of the FFM remote sensing unit
will be based on the prevailing weather. The FFM
remote sensing unit shall be operational when the
weather is below CAT I ILS minimums.
2. When the weather is less than that required
for CAT I operations, the GRN-27 FFM remote status
sensing unit shall be set at:
(a) “CAT II” when the RVR is less than
2,400feet.
(b) “CAT III” when the RVR is less than
1,200 feet.
3. When the remote status unit indicates that the
localizer FFM is in alarm (aural warning following
the preset delay) and:
(a) The aircraft is outside the middle marker
(MM), check for encroachment those portions of the
critical area that can be seen from the tower. It is
understood that the entire critical area may not be
visible due to low ceilings and poor visibility. The
check is strictly to determine possible causal factors
for the out‐of‐tolerance situation. If the alarm has not
cleared prior to the aircraft's arriving at the MM,
immediately issue an advisory that the FFM remote
status sensing unit indicates the localizer is
unreliable.
(b) The aircraft is between the MM and the
inner marker (IM), immediately issue an advisory
that the FFM remote status sensing unit indicates the
localizer is unreliable.
PHRASEOLOGYCAUTION,
MONITOR INDICATES RUNWAY (number)
LOCALIZER UNRELIABLE.
(c) The aircraft has passed the IM, there is no
action requirement. Although the FFM has been
modified with filters which dampen the effect of false
alarms, you may expect alarms when aircraft are
located between the FFM and the localizer antenna
either on landing or on takeoff.
REFERENCEFAAO
JO 7110.65, Para 4-7-12, Airport Conditions.
2/14/08 JO 7110.65S
Airport Lighting 3-4-1
Section 4. Airport Lighting
3-4-1. EMERGENCY LIGHTING
Whenever you become aware that an emergency has
or will occur, take action to provide for the operation
of all appropriate airport lighting aids as required.
REFERENCEFAAO
JO 7110.65, Para 10-4-2, Lighting Requirements.
3-4-2. RUNWAY END IDENTIFIER LIGHTS
When separate on-off controls are provided, operate
runway end identifier lights:
a. When the associated runway lights are lighted.
Turn the REIL off after:
1. An arriving aircraft has landed.
2. A departing aircraft has left the traffic pattern
area.
3. It is determined that the lights are of no
further use to the pilot.
b. As required by facility directives to meet local
conditions.
c. As requested by the pilot.
d. Operate intensity setting in accordance with the
values in TBL 3-4-1 except as prescribed in
subparasb and c above.
TBL 3-4-1
REIL Intensity Setting-Three Step System
Settings Visibility
Day Night
3 Less than 2 miles Less than 1 mile
2 2 to 5 miles inclusive 1 to but not including 3
miles
1 When requested 3 miles or more
3-4-3. VISUAL APPROACH SLOPE
INDICATORS (VASI)
VASI systems with remote on-off switching shall be
operated when they serve the runway in use and
where intensities are controlled in accordance with
TBL 3-4-2 and TBL 3-4-3 except:
a. As required by facility directives to meet local
conditions.
b. As required by the pilot.
TBL 3-4-2
VASI Intensity Setting-Two Step System
Step Period/Condition
High Day-Sunrise to sunset.
Low Night-Sunset to sunrise.
TBL 3-4-3
VASI Intensity Setting-Three Step System
Step Period/Condition
High Day-Sunrise to sunset.
Medium Twilight-From sunset to 30 minutes after
sunset and from 30 minutes before sunrise
to sunrise,* and during twilight in Alaska.
Low Night-Sunset to sunrise.
*During a 1 year period, twilight may vary 26 to 43 minutes between
25 and 49N latitude.
NOTEThe
basic FAA standard for VASI systems permits
independent operation by means of photoelectric device.
This system has no on-off control feature and is intended
for continuous operation. Other VASI systems in use
include those that are operated remotely from the control
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