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| ![](media/image1.                 |   | **Advisory  |               |   |
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| U.S. Department                   |   |             |               |   |
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| of Transportation                 |   |             |               |   |
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| #### Federal Aviation             |   |             |               |   |
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| **Administration**                |   |             |               |   |
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| **Subject:** SPECIFICATION FOR    | * |             | **AC No.:**   |   |
| L-821, PANELS FOR THE CONTROL OF  | * |             | 150/5345-3F   |   |
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**1. PURPOSE.** This advisory circular (AC) provides the specified
manufacturing requirements for panels used for remote control of airport
lighting and auxiliary systems.

**2. EFFECTIVE DATE.** Effective six months after the issue date of this
AC, only that equipment qualified in accordance with the specifications
herein will be listed in accordance with AC 150/5345-53, *Airport
Lighting Equipment Certification Program*.

**3. CANCELLATION.** AC 150/5345-3E, *Specification for L-821 Panels for
Remote Control of Airport Lighting*, dated September 1, 1998, is
canceled.

**4.** **APPLICATION.** The FAA recommends the guidelines and standards
in this AC for L-821 Airport Lighting Panels. This AC does not
constitute a regulation and in general is not mandatory. However, use of
these guidelines is mandatory for L-821 Airport Lighting Panels funded
under the Airport Improvement Program (AIP) or Passenger Facility Charge
(PFC) Programs. Mandatory terms such as "must" apply only to those who
purchase L-821 Airport Lighting Panels using AIP or PFC funds and/or to
those who intend to meet this specification for any other reason.

**5. PRINCIPAL CHANGES.** The following principal changes have been
incorporated into this AC:

-   Updated "Referenced Documents" section.

**6. METRIC UNITS.** To promote an orderly transition to metric units,
this AC includes both English and metric dimensions. The metric
conversions may not be exact equivalents, and until there is an official
changeover to the metric system, the English dimensions will govern.

![](media/image2.png){width="2.5881944444444445in"
height="0.6041666666666666in"}

DAVID L. BENNETT

Director of Airport Safety and Standards

**This page intentionally blank.**

**FAA SPECIFICATION FOR L-821 PANELS**

###### FOR THE CONTROL OF AIRPORT LIGHTING

**1. SCOPE AND CLASSIFICATION.**

**1.1 Scope.** This specification sets forth the manufacturing
requirements for panels to be used to control various airport lighting
and auxiliary systems.

**1.2 Equipment Classification.** Two types, three classes, two styles,
and three modes of panels are covered by this specification.

**1.2.1 Type.** Panels of the following types are covered by this
specification:

  ------------------ ----------------------------------------------------
  **Type**           **Description**

                     

  I                  Conventional panels. (See illustrations in Appendix
                     IV, Figures 2, 3, 4, 5, and 6A).

  II                 Facsimile panels. (See illustrations in Appendix IV,
                     Figures 6B and 7).
  ------------------ ----------------------------------------------------

**1.2.2 Class.** Panels of the following classes are covered by this
specification:

  ------------------ ----------------------------------------------------
  **Class**          **Description**

                     

  F                  Flush mounted panels. Class F panels consist of a
                     top plate attached to a case which is installed in a
                     console in the airport control station (desk,
                     counter, etc.) with the top plate flush with the
                     surface of the control station. A typical case is
                     shown in Appendix IV, Figure 8.

  S                  Surface mounted panels. Class S panels consist of a
                     top plate and case for installation on an airport
                     control station (desk, counter, etc.). A typical
                     case is shown in Appendix IV, Figure 8.

  W                  Wall or surface mounted panels. Class W panels
                     consist of a top plate and a commercial outlet or
                     pull box for mounting in an electrical vault or
                     other convenient control point at a small airport. A
                     typical panel top plate is shown in Appendix IV,
                     Figure 4.
  ------------------ ----------------------------------------------------

**1.2.3 Style.** Panels of the following styles are covered by this
specification:

  ------------------ ----------------------------------------------------
  **Style**          **Description**

                     

  1                  Unlighted.

  2                  Backlighted.
  ------------------ ----------------------------------------------------

**1.2.4 Mode.** Panels of the following modes are covered by this
specification:

  ------------------ ----------------------------------------------------
  **Mode**           **Description**

  1                  Generic Panel. I.e. main lighting control panel.
                     (See sample panels in Appendix IV, Figures 2 through
                     7).

  2                  Land and Hold Short Operations (LAHSO) Control
                     Panel. (See illustration in Appendix IV, Figure 11).

  3                  Stop Bar Control Panel. (See illustration in
                     Appendix IV, Figure 12).
  ------------------ ----------------------------------------------------

**2. REFERENCED DOCUMENTS.**

**2.1 General.** The following is a listing of documents referenced in
this AC.

**2.2 FAA Advisory Circulars.**

AC 150/5340-30C *Design* *and Installation Details for Airport Visual
Aids*

AC 150/5345-53 *Airport Lighting Equipment Certification Program*

AC 120-57A *Surface Movement Guidance and Control Systems*

*Notes:* Electronic copies of FAA Advisory Circulars may be obtained
from:

> [www.faa.gov/airports_airtraffic/airports/resources/advisory_circulars/](http://www.faa.gov/airports_airtraffic/airports/resources/advisory_circulars/)
>
> or all FAA documents by standard mail from:
>
> U.S. Department of Transportation\
> Subsequent Distribution Office\
> Ardmore East Business Center\
> 3341Q 75th Avenue\
> Landover, MD  20785\
> \
> Phone:  (301) 322-4961\
> FAX:    (301) 386-5394

**2.3 Federal Standards.**

FED-STD-595 *Colors*

*Notes:* Electronic copies of Federal standards and specifications may
be obtained from:

[www.gsa.gov/fss](http://www.gsa.gov/fss)

**2.4 Military Standards.**

MIL-STD-810F *Environmental Engineering Considerations and Laboratory
Tests*

**Notes:** Copies of Military Standards may be obtained from:

> [dodssp.daps.dla.mil/](http://dodssp.daps.dla.mil/)
>
> or compact discs (CDs) on website order form by standard mail from:
>
> DAPS / DODSSP
>
> Building 4/Section D
>
> 700 Robbins Ave.

Philadelphia, PA 19111-5094

**3. GENERAL EQUIPMENT REQUIREMENTS.**

**3.1 General Requirements.** The panels specified herein are intended
for use in controlling various lighting and auxiliary systems as
described in the documents listed in paragraph 2.2.

**3.2 Location.** The panels are generally installed in airport traffic
control towers (ATCT). Airports without ATCTs should install panels at a
convenient control location such as a hangar, office, or electrical
vault.

**3.3 Panel Configurations.** Each control panel layout must clearly
identify the "ON" and "OFF" position of each switch or push button, the
system each switch or push buttons controls, and, where appropriate, the
intensity of the lighting system. Panel layouts are airport specific and
must be configured to accommodate unique user requirements at a
particular airport. Panel lighting, including panel backlighting and
illuminated switches, must be illuminated such that they are visible
when direct sunlight falls on the panel. Some examples of typical panel
layouts using different switches and arrangements are shown in Appendix
IV of this specification. The figures are provided to show examples;
physical conformance to the figures may not ensure that the panels
comply with all applicable portions of this specification.

**3.2.1 Type I, Conventional Panels.** Switching of airport lighting and
auxiliary systems may be accomplished in several ways. Figures are
provided in Appendix IV of this AC to show some typical control panels.
Other panel configurations will comply with this specification. The
following table includes a description of the sample control panels
illustrated in this AC:

  ------------------ ----------------------------------------------------
  **Figure**         **Description**

  2 and 6A           Panel layouts with toggle switches for system
                     controls with the exception of some intensity
                     setting controls. Some of the system intensity
                     settings are controlled with the five-position
                     rotary switches.

  3 and 4            Panel layouts with rotary switches for runway and/or
                     taxiway lighting systems controls, including
                     intensity settings, and toggle switches for other
                     system controls.

  5                  Panel layout with all push button switches for
                     system controls.
  ------------------ ----------------------------------------------------

**3.2.2 Type II, Facsimile Panels.** Type II panels will primarily be
Class F (flush mounted) panels. The layout of airport operating surface
being controlled must be engraved, painted, or overlaid by decal on the
panel. Such surfaces include, but are not limited to, runways and
taxiways. Other methods of labeling panel plates may be acceptable but
must be approved by the FAA or the third party certification bodies
listed in AC 150/5345-53 providing certification of the particular
panel. (Approval method is described in Appendix III). Type II, Style 2,
panel plates must have appropriate facsimile sections of the airport
surface back-lighted as the switch that controls a particular system is
activated (turned "ON"). When the system is de-activated (turned "OFF")
the backlighting must not be illuminated. Individual lighting sections
controlled by various switches must be color coded. Appendix IV, Figures
6A and 7 illustrate examples of the Type II, Style 2 panels. The shaded
taxiways would appear in various colors and illuminate when the
associated lighting circuit is activated.

**3.3 Panel Components.**

**3.3.1 Panel Plate.** Class F and S panel plates must be made of
0.094‑inch (2.5 mm) steel or of other material of thickness or design
that will provide like stiffness. The plate is to be attached to the
case with a continuous hinge along its top edge. A latch must be mounted
inside the case to provide support when the panel plate is open and at a
near vertical position. No part of the plate or its attachments should
project behind the plane of the back of the case during opening or
closing. The panel plate for Class W panels may be a commercially
available utility or outlet box cover that is usually attached to the
case or box with screws. Therefore, for Class W, panels a latch and/or
hinge is not required.

**3.3.2 Case or Box.** Class F and S panels must have a suitable case
made of not less than 0.078‑inch (2 mm) (nominal) sheet steel or
aluminum of equal rigidity (see Figure 8 for examples). Commercially
available outlets or pull boxes may be provided in lieu of a
manufactured case for Class W panel plates. A grounding lug, capable of
handling no. 12 AWG or larger conductor, must be supplied in each case
or box.

**3.3.3 Switches.** Switches are used to turn "ON" and "OFF" airport
lighting regulators, beacons, obstruction lights, lighted wind
indicators, apron lights, emergency power generators, and various
lighting systems. Additionally, switches are used to control the
intensity of intensity controlled lighting systems. The switches may be
wired, programmed, or ganged for simultaneous operation of several
lighting system circuits. Switches must have a contact rating of 125% of
the load current and must be rated to meet the circuit voltage
requirements. The life expectancy of the switches, at rated load, must
be at least 25,000 operations. Switches must have screw, solder, or
push-on type terminals. Typical switches are shown on panel layouts in
Figures 2 through 7 and Figures 11 and 12.

**3.3.3.1 Toggle Switches.** Toggle switches must have either two or
three positions and, for most applications, be detented to provide
positive-feel switching. Switches must be mounted to operate left to
right and wired such that when the switch is in the far left position
the lighting system is either "OFF" or "ON" with the intensity set to
the lowest available intensity. Switches must be mounted on the panel
plate with a hexagonal nut above and below the panel plate using an
internal-tooth lock-washer and a locking ring or keyed punched panel to
assure permanent mounting.

**3.3.3.2 Rotary Switches.** Rotary switches, used for the control of
lighting systems, must have three to six distinct positions with the
appropriate number of poles to control the lighting system intensity. If
required by the user, the rotary switch must provide a pole to turn the
systems "OFF." The switches must have a minimum angular throw of 30
degrees between detents and be equipped with a stop to prevent rotation
past the last position. The switches must rotate between detents in
either direction without stopping.

**3.3.3.3 Push Button Switches.** Momentary or alternate action push
button switches may be used to control any or all functions of airport
lighting and auxiliary systems. The use of push button switches for
intensity control will require auxiliary relays or non-radio
interference solid state circuitry. Switches must be wired so that when
initially energized, the intensity setting of an intensity controlled
lighting system is the lowest available intensity. When an intensity
controlled lighting system is de-energizing, the intensity setting must
automatically return to the lowest intensity available. Illuminated push
buttons should be softly backlit in an "OFF" position, and glow
noticeably brighter in the "ON" position. A sample panel illustrating
push button controls is shown in Appendix IV, Figure 5.

**3.3.4 Backlighting.** Backlighting of facsimile panels, switches, or
switch designations must be made with light sources with a life
expectancy of at least 10,000 hours. A control to reduce the brightness
of the panel backlighting up to 90 percent must be provided. This
brightness control must not cause radio interference. A control must be
provided on each panel to test the panel lamps and illuminated switches.

**3.3.5 Emergency Generator Control.** Airport main lighting control
panels must include an emergency generator control switch that will
transfer the power load from the main power supply to the emergency
generator and a red pilot light that illuminates when the power load has
been switched to the emergency generator.

**3.3.6 Wire and Wiring.** The wire must have stranded copper conductors
with adequate current capacity and a minimum rated insulation of 90° C.
The wire size and insulation voltage rating must be suitable for the
design voltage and load. For identification purposes, all wires must be
either color coded or identified with wire markers. Wire markers must be
fixed such that they can not be accidentally removed and that they
remain legible under normal conditions. All leads must be properly
strained and long enough to allow the plate to be raised to the extent
permitted by the latch. All panels must be wired with terminal
connections in accordance with the applicable combination of components.
Figure 9 shows the wiring diagram of the sample panel shown in Figure 2.

**3.3.7 Terminal Blocks.** Terminal blocks must be pressure type
terminal blocks and have a minimum rating equal to or greater than the
rating of the wire. Each individual terminal must be identified with
permanent marks in accordance with the wiring diagram furnished with the
unit. Terminal blocks may be omitted in Class W panels.

**3.3.8 Marking.** Switch designations must be marked in characters not
less than 3/16 inch (0.5 cm) and not over 5/16 inch (0.8 cm) high,
formed by engraving, etching, or stamping. Unlighted characters must

be permanently marked. Markings must be a contrasting color from the
marked surface, i.e. white surface with black marking, or black surface
with white marking. Markings must be placed either on the panel or on a
small separate plate securely fastened to the panel. When push button
switches are used, the marking may be on the switch itself but must be
visible when the push button is in the "ON" or "OFF" position.

**3.3.9 Painting.** For Type F and S panels, the color and gloss of the
case and panel plate must conform to Federal Standard 595, brown No.
30372. Apply a hard, paint finish having a smooth texture, i.e. powder
coating, baked epoxy, etc. The finished surface of the panel must be
suitable for indoor use and provide protection against circulating dust,
falling dirt, and dripping non-corrosive liquids. An acceptable finish
surface must be free of runs, sags, etc. For Class W panels, the
commercially applied finish to the utility box and cover will be
acceptable.

**3.3.10 Wiring Diagram.** The manufacturer must supply three copies of
a wiring diagram with each panel. The wiring diagram must show the color
code or number identification of each wire and the proper connections.

**3.3.11 Parts List and Installation Instructions.** A component parts
list and installation instructions must be furnished with each control
panel along with sufficient drawings or illustrations to indicate
clearly the method of installation.

**3.3.12 Nameplate.** A nameplate showing the following information must
be attached to each panel:

a\. Airport Lighting Control Panel.

b\. Identification: FAA L-821.

c\. Type \_\_\_\_, Class \_\_\_\_, Style \_\_\_\_\_, Mode \_\_\_\_\_.

d\. Manufacturer's Part no. \_\_\_\_\_.

e\. Manufacturer's name or trademark.

f\. Date manufactured \_\_\_\_\_\_.

**4. MODE 2, LAND AND HOLD SHORT OPERATIONS (LAHSO) CONTROL PANELS.**

**4.1 LAHSO Lighting Systems**. Land and hold short lighting systems are
lights used to provide visual reference to pilots during LAHSO. The
details of the lighting system are in AC 150/5340-30. Control panels for
the control of LAHSO lighting systems must comply with the applicable
requirements in paragraph 4.1 through 4.4 in addition to the other
details in this AC which are not related to a specific panel.

**4.2 General Requirements.** The control panel must be located in the
ATCT. The panel must contain an \"ON/OFF\" push button and a red fault
indicator lamp for each LAHSO lighting system controlled at the panel.
The LAHSO controls may be located on the airport's main lighting control
panel. The fault light must illuminate if any one of the faults defined
in AC 150/5340-30 occurs. If the LAHSO panel is a dedicated panel
separate from the main lighting control panel, panel backlighting must
comply with paragraph 3.3.4 of this AC and lighting system intensity
controls must not be provided on the LAHSO panel.

**4.3 Multiple LAHSO Systems on Separate Runways.** A control panel used
to control multiple LAHSO lighting systems installed on separate runways
must provide one push button on the control panel for each system. A
typical panel layout for this configuration is shown in Appendix IV,
Figure 11A.

**4.4 Multiple LAHSO Systems on the Same Runway.** A control panel used
to control multiple LAHSO

lighting systems installed on the same runway must provide one push
button for each system and a master switch. The master switch must be a
separate "ON/OFF" push button which turns the LAHSO control panel "ON"
and "OFF". When the master switch is "ON", push buttons controlling the
systems must be energized, and when the master switch is "OFF", push
buttons controlling the systems must be de-energized. The push buttons
used to activate the LAHSO lighting systems must be interlocked allowing
only one LAHSO lighting systems to be operating at any given time. The
interlock design must not allow simultaneous operations of controlled
LAHSO lighting systems controlled from the same panel. Thus, when a push
button for a LAHSO lighting system on a control panel is pressed and
locked in the "ON" position the associated system is activated, all
other LAHSO lighting system controlled from the same panel must become
inactive. However, the interlock must not de-activate a lighting system
when another system push button has been partially depressed and
released prior to locking in the "ON" position. A typical panel layout
for this configuration is shown in Appendix IV, Figure 11B.

**5. MODE 3, STOP BAR CONTROL PANELS.** Control panels for the control
of stop bar lighting systems must comply with the applicable
requirements in 5.1 through 5.3.4.3 in addition to the other details in
this AC which are not related to a specific panel.

**5.1 General Requirements.** The control panel must be located in the
ATCT. The stop bar control panel must be a dedicated panel separate from
the main airport lighting control panel. The panel must include an
"ON/OFF" switch for each stop bar to be controlled from the panel. Each
switch on the panel must be clearly labeled to indicate the function of
the switch. The panel must be activated and de-activated with a master
control switch specified in 5.1.1.

**5.1.1 Master Controls.** A master control switch must be located on
the main lighting control panel to transition the applicable taxiway
centerline lights, taxiway edge lights, runway guard lights, clearance
bars, and stop bars to the appropriate SMCGS settings for low visibility
operations. (See Surface Movement Guidance and Control System (SMCGS)
operations in Appendix II for more information on low visibility
operations). The master control switch must also activate the associated
stop bar control panels. If the airport is approved for low visibility
operations that do not require stop bars, it is recommended that the
master switch be installed. The master switch must various transition
the applicable taxiway centerline lights, taxiway edge lights, runway
guard lights, clearance bars, and stop bars to the appropriate SMCGS
settings when switched. For example, the switch settings may be "No
SMCGS", "Below 1200 RVR", and/or "Below 600 RVR". When the switch is in
the "No SMCGS" position, the applicable taxiway centerline lights,
taxiway edge lights, runway guard lights, clearance bars, and stop bars
must conform to the setting on the main lighting control panel, and all
associated stop bars and stop bar control panels must be de-energized.
The appropriate SMCGS setting for the applicable lighting systems should
be outlined in the airport's SMCGS plan.

**5.1.2 Stop Bar Controls.** The stop bar control panel must have a
separate stop bar control switch to activate or de-activate each
controlled stop bar on the airfield. A single stop bar control switch
must be for each runway on the panel to temporarily de-activate the
uncontrolled stop bars on the applicable runway. The stop bar control
switches must be push buttons that comply with paragraph 5.3.1 of this
AC.

**5.2 Stop Bar Panel Configuration.**

**5.2.1 Dimensions.** The minimum dimensions for the panel must be 4
inches x 12 inches (100 mm x 300 mm) and the maximum dimensions must be
12 inches x 16 inches (300 mm x 400 mm).

**5.2.2 Location.** The exact location of control panels are site
specific with respect to operations, space, etc. The local air traffic
facility should be consulted about the appropriate location for the
control panel.

**5.2.3 Display.** The stop bar control panel must include a diagram of
the airport where the stop bars are located. The diagram must be limited
to relevant portions of the airport surface movement area; runways and
associated taxiways must be included. Where appropriate, designated taxi
routes for low visibility operations should be included on the diagram.
The diagram should allow for inclusion of additional stop bar controls
and displays, if possible. Each stop bar position should be represented
on the panel by three lights (per paragraph 5.3.2) which will indicate
the "ON/OFF" status of the actual stop bar. A time delay may exist
between actual status of airfield lights and panel lights in accordance
with control methods described in AC 150/5340-30. The panel must also
include an alert control in the upper right hand corner. The alert
control must be a single push button, backlit red. Where applicable,
lead-on lights will be represented by one green panel light located on
the diagram for each segment of lead-on lights in a position relative to
their position on the airfield. A typical panel is shown in Appendix IV,
Figure 11 and the panel push button functions are described in Appendix
I, Table 1.

**5.3 Stop Bar Control Panel Design.**

**5.3.1 Push Buttons.** Push buttons must be used to control stop bar
lighting systems and must be located on the stop bar control panel. The
push buttons should be softly backlit in an "OFF" position and glow
noticeably brighter in the "ON" position. All push buttons, with the
exception of "ALERT", "SENSOR OVERIDE", "UC STOPBARS", and "LAMP TEST",
must be alternate action push buttons with tactile feedback. The
"ALERT", "SENSOR OVERIDE", "UC STOPBARS", and "LAMP TEST" push buttons
must be momentary action push buttons with tactile feedback. The push
button controls and the panel layout should be designed to minimize the
possibility of inadvertent activation; protective raised edges on at
least two opposite sides, such that the push button will not be
activated if a flat object weighing 2 pounds is dropped on it from a
height of 3 inches. The ranges below are general guidelines for such
controls; however, actual values to be used in a particular control
tower are to be determined by the system designer/engineer. Air Traffic
Control (ATC) personnel at the airport must be consulted prior to final
design and installation to verify that the control panel will meet the
ATC requirements identified at that particular airport. The ranges are
as follows:

Push Button Dimensions: Minimum 3/8 inch (9.5 mm) - Maximum 1 inch (25
mm).

Lamp to Button Separation: Minimum 1/2 inch (13 mm) - Maximum 2 inches
(50 mm).

Button to Button Separation: Minimum 1/2 inch (13 mm)

Resistance: Minimum 10 oz. (2.8 N) - Maximum 40 oz. (11 N).

Displacement Height: Minimum 5/64 inch (2 mm) - Maximum 1/4 inch (16
mm).

**5.3.2 Panel Illumination.** All panel lights must be light emitting
diodes (LED) or lamps with a minimum lamp life of 5,000 hours. The
intensity must provide a noticeable difference between "ON" and "OFF"
under typical ATCT lighting conditions and when viewed between 0 degrees
and 45 degrees from vertical. When the panel is activated, diagrams,
indicator lamps, and push buttons must be backlit. Backlighting must not
be more than 30% of the panel full lighting intensity. A panel lighting
intensity switch must be provided to vary the panel intensity between
50% and 100% intensity.

**5.3.3 Labeling.** The panel labels must be in a simple, unadorned font
and must be located in consistent locations relative to each
control/display. The relationship between the label and its associated
control/display should be clear by virtue of their relative locations.
All movement areas represented on

the panel must be labeled according to the airport nomenclature on the
airport layout charts and signs. If necessary, to clarify the
relationship between controls and displays, a line can be drawn around
each associated pair of controls and stop bar indicators in a
contrasting, neutral color. The stop bar alert control will be clearly
labeled. The minimum character height is to be 0.18 inch (.7 mm). All
characters should be capital letters and clearly viewed from 19.7 inches
(.5 m) - 39.4 inches (1 m).

**5.3.4 Panel Functions.** Control push buttons on the stop bar control
panel must comply with the applicable functional descriptions in this
section and Table 1, Stop Bar Panel Push Button Descriptions, in
Appendix I.

**5.3.4.1 Controlled Stop Bars.** Panel functions of the panel buttons
and status indicator lights are described in Appendix I, Table 1. AC
150/5340-30 contains more information on the normal operations of stop
bars and the performance of the stop bar sensors.

**5.3.4.2 Uncontrolled Stop Bars.** When the panel is initially
energized, the uncontrolled stop bars must be energized. The
uncontrolled stop bars must be de-energized when the "UC STOP BARS" push
button is pushed and must become re-energized automatically in 30
seconds. If the push button is pushed again before the 30 second delay
has expired, the uncontrolled stop bars must become re-energized. The
uncontrolled stop bars must be electronically monitored if the status of
uncontrolled stop bars is indicated with panel lights on the control
panel (as shown in Figure 11).

**5.3.4.3 Alert.** Each stop bar control panel must have an alert
function, which indicates system malfunctions as described in the
section of AC 120-57 that specifies the monitoring and visual inspection
of lighting aids. This function must be a red push button. To signal an
alert condition is present, the alert push button must be lighted and
blinking, the appropriate red (stop bar) or green (lead-on) panel lights
must be blinking, and an audible tone must sound. If the monitoring
system is unable to detect and/or indicate which particular stop bar is
malfunctioning, the alert push button must be lighted and blinking, and
an audible tone must sound. A depression of this push button will
indicate acknowledgement of the alert, and the push button will stop
blinking and remain lighted and the tone must cease. When the problem is
corrected, the alert push button along with the stop bar and lead-on
panel lights must return to normal status.

**6. EQUIPMENT QUALIFICATION REQUIREMENTS.**

**6.1 Qualification Procedures.** Procedures for qualifying equipment to
be furnished under the Federal grant assistance program for airports are
contained in AC 150/5345-53.

**6.2 Qualification Tests.** The following tests must be conducted on
each panel to be qualified.

**6.2.1 Examination.** In this examination, use a check list to certify
that the material used, dimensions, component parts, calibration,
quantities, etc., are in accordance with the requirements of this
specification as it applies.

**6.2.2 Operation.** Connect the panel to a test board consisting of
pilot lights to check each component and switch for proper operation.
Panels must demonstrate compliance to all applicable operational
requirements.

**6.2.3 Dielectric.** Subject all terminals on the terminal block to a
potential of at least 500 volts rms, 60

Hz, applied between the terminal and the grounded case for a period of
one minute. Any breakdown of the insulation will be cause for rejection.

**6.2.4 Humidity.** Subject all panels to a humidity test in accordance
with MIL-STD-810E, Method 507.3, Procedure I. The equipment must be
subjected to three cycles (72 hours) according to Table 507.3-I, except
the maximum temperature at cycle 1 must be +130°F (±5°) (+55°C). Failure
of the equipment to operate as specified or any deterioration in
material must be cause for failure.

**7. PRODUCTION TEST REQUIREMENTS.**

**7.1 Production Tests.** The following tests must be conducted on each
production panel.

**7.1.1 Examination.** In this examination, use a check list to certify
that the material used, dimensions, component parts, calibration,
quantities, etc., are in accordance with the detail requirements of this
specification, as it applies, and the purchase order.

**7.1.2 Operation.** Connect the panel to a test board consisting of
pilot lights to check each component and switch for proper operation.
Panels must demonstrate compliance with all applicable operational
requirements.

**7.1.3 Dielectric.** Subject all terminals on the terminal block to a
potential of at least 500 volts rms, 60 Hz, applied for a period of one
minute between the terminal and the grounded case. No breakdown of the
insulation will be acceptable.

**This page intentionally blank.**

**APPENDIX 1. TABLE.**

**Table 1. Stop Bar Panel Push Button Descriptions.**

The following table describes the functions and characteristics of the
controls shown on the typical stop bar control panel shown in Figure 12.
The table also describes the system and panel status operations
associated with the system sensors. The sensors are described in detail
in AC 150/5345-28.

+----------------+----------+---------------------+-------------------+
| **Activation   | ### Ap   | **Function**        | **Airfield        |
| or**           | pearance |                     | Lighting**        |
|                |          |                     |                   |
| **DE-A         |          |                     | **and Panel Light |
| CTIVATION^1^** |          |                     | Status^2,3^**     |
+----------------+----------+---------------------+-------------------+
| **ALERT^4^     |          |                     |                   |
| (Red)**        |          |                     |                   |
+----------------+----------+---------------------+-------------------+
| Automatic      | Blinking | Indicates the       | *Related Stop Bar |
|                |          | system is           | -- Blinking*      |
|                |          | malfunctioning.     |                   |
|                |          | Malfunctions are    | *Related Lead On  |
|                |          | defined in AC       | -- Blinking*      |
|                |          | 120-57.             |                   |
+----------------+----------+---------------------+-------------------+
| MANUAL         | Ill      | Indicates           | *Related Stop Bar |
|                | uminated | acknowledgment of   | -- Blinking*      |
|                |          | the malfunction.    |                   |
|                |          |                     | *Related Lead On  |
|                |          |                     | -- Blinking*      |
+----------------+----------+---------------------+-------------------+
| AUTOMATIC      | Un-Ill   | Indicates the       | *Related Stop Bar |
|                | uminated | system malfunctions | -- Blinking*      |
|                |          | have been           |                   |
|                |          | corrected.          | *Related Lead On  |
|                |          |                     | -- Blinking*      |
+----------------+----------+---------------------+-------------------+
| **GO (Green)** |          |                     |                   |
+----------------+----------+---------------------+-------------------+
| Manual         | Back     | Turns "OFF"         | *Stop Bar -       |
|                | -lighted | associated Stop Bar | "OFF"*            |
|                |          |                     |                   |
|                |          |                     | *Lead On          |
|                |          |                     | (segment 1) -     |
|                |          |                     | "ON"*             |
|                |          |                     |                   |
|                |          |                     | *Lead On (segment |
|                |          |                     | 2) - "ON"*        |
+----------------+----------+---------------------+-------------------+
| AUTOMATIC      | Ill      | Turns "ON"          | ####              |
| (sensor)       | uminated | associated Stop Bar | # Stop Bar - "ON" |
|                |          |                     |                   |
| Or             |          |                     | Lead On           |
|                |          |                     | (segment 1) -     |
| MANUAL         |          |                     | "OFF"             |
|                |          |                     |                   |
|                |          |                     | Lead On (segment  |
|                |          |                     | 2) - "ON"         |
|                |          |                     |                   |
|                |          |                     | Lead On (segment  |
|                |          |                     | 2) - "OFF"        |
|                |          |                     |                   |
|                |          |                     | when aircraft     |
|                |          |                     | clears sensor #2  |
|                |          |                     |                   |
|                |          |                     | *Stop Bar - "ON"* |
|                |          |                     |                   |
|                |          |                     | *Lead On          |
|                |          |                     | (segment 1) -     |
|                |          |                     | "OFF"*            |
|                |          |                     |                   |
|                |          |                     | *Lead On (segment |
|                |          |                     | 2) - "OFF"*       |
+----------------+----------+---------------------+-------------------+
| **LAMP TEST^3^ |          |                     |                   |
| (White)**      |          |                     |                   |
+----------------+----------+---------------------+-------------------+
| Manual         | Ill      | Illuminates all     | Airfield          |
|                | uminated | push buttons and    | Lighting -        |
|                |          | indicator lights on | unchanged         |
|                |          | the panel to full   |                   |
|                |          | intensity.          | Panel lights -    |
|                |          |                     | full intensity    |
+----------------+----------+---------------------+-------------------+

^1^ First letter CAPITAL indicates Activation and ALL CAPITAL LETTERS
indicate De-activation.

^2^ Italics indicate a change in lighting status.

^3^ A time delay may exist between airfield lighting changes and panel
indicator changes, per AC 150/5340-30.

^4^ Momentary action push buttons.

**Table 1. Stop Bar Panel Push Button Descriptions (continued).**

+----------------+----------+---------------------+-------------------+
| **Activation   | **Appe   | **Function**        | **Airfield        |
| or**           | arance** |                     | Lighting**        |
|                |          |                     |                   |
| **DE-A         |          |                     | **and Panel Light |
| CTIVATION^1^** |          |                     | Status^2,3^**     |
+----------------+----------+---------------------+-------------------+
| **SENSOR       |          |                     |                   |
| OVERIDE ^3^    |          |                     |                   |
| (White)**      |          |                     |                   |
+----------------+----------+---------------------+-------------------+
| Manual         | Ill      | Overrides sensor    | *Stop Bar -       |
|                | uminated | commands when       | "OFF"*            |
|                |          | pressed along with  |                   |
|                |          | the GO push button. | *Lead On          |
|                |          |                     | (segment 1)       |
|                |          |                     | -"ON"*            |
|                |          |                     |                   |
|                |          |                     | *Lead On (segment |
|                |          |                     | 2) -"ON"*         |
+----------------+----------+---------------------+-------------------+
| MANUAL         | Back     | Resets the          | *Stop Bar - "ON"* |
|                | -lighted | associated Stop     |                   |
| Or             |          | Bar.                | Lead On           |
|                |          |                     | (segment 1)       |
| AUTOMATIC      |          |                     | -"OFF"            |
|                |          |                     |                   |
| (timed)        |          |                     | *Lead On (segment |
|                |          |                     | 2) -"OFF"*        |
+----------------+----------+---------------------+-------------------+
| **UC STOPBARS  |          |                     |                   |
| (Yellow)**     |          |                     |                   |
+----------------+----------+---------------------+-------------------+
| Manual         | Ill      | All associated      | [Controlled Stop  |
|                | uminated | uncontrolled stop   | Bars]{.underline} |
|                |          | bars turned "OFF".  |                   |
|                |          |                     | Stop Bars --      |
|                |          |                     | unchanged         |
|                |          |                     |                   |
|                |          |                     | Lead On (all) --  |
|                |          |                     | unchanged         |
|                |          |                     |                   |
|                |          |                     | [Uncontrolled     |
|                |          |                     | Stop              |
|                |          |                     | Bars]{.underline} |
|                |          |                     |                   |
|                |          |                     | Stop Bar - "OFF"  |
|                |          |                     |                   |
|                |          |                     | Lead On           |
|                |          |                     | (segment 1) -     |
|                |          |                     | "ON"              |
|                |          |                     |                   |
|                |          |                     | Lead On (segment  |
|                |          |                     | 2) - "ON"         |
+----------------+----------+---------------------+-------------------+
| AUTOMATIC      | Back     | All associated      | [Uncontrolled     |
|                | -lighted | uncontrolled stop   | Stop              |
| (timed)        |          | bars turned "ON".   | Bars]{.underline} |
|                |          |                     |                   |
| or             |          |                     | Stop Bars - "ON"  |
|                |          |                     |                   |
| MANUAL         |          |                     | [Uncontrolled     |
|                |          |                     | Stop              |
|                |          |                     | Bars]{.underline} |
|                |          |                     |                   |
|                |          |                     | Stop Bar - "ON"   |
|                |          |                     |                   |
|                |          |                     | Lead On (all) --  |
|                |          |                     | unchanged         |
|                |          |                     |                   |
|                |          |                     | Sensor #1         |
+----------------+----------+---------------------+-------------------+
| #### Sensor #1 |          |                     |                   |
+----------------+----------+---------------------+-------------------+
| Aircraft       |          | Turns "OFF" segment | Stop Bar - "ON"   |
| Crossing       |          | 1 of Lead on        |                   |
|                |          | lights.             | Lead On           |
|                |          |                     | (segment 1) -     |
|                |          |                     | "OFF"             |
|                |          |                     |                   |
|                |          |                     | Lead On (segment  |
|                |          |                     | 2) - "ON" Sensor  |
|                |          |                     | #2                |
+----------------+----------+---------------------+-------------------+
| #### Sensor #2 |          |                     |                   |
+----------------+----------+---------------------+-------------------+
| Aircraft       |          | Turns "OFF" segment | Stop Bar - "ON"   |
| Crossing       |          | 2 of Lead on        |                   |
|                |          | lights.             | Lead On           |
|                |          |                     | (segment 1) -     |
|                |          |                     | "OFF"             |
|                |          |                     |                   |
|                |          |                     | Lead On (segment  |
|                |          |                     | 2) - "OFF"        |
+----------------+----------+---------------------+-------------------+

^1^ First letter CAPITAL indicates Activation and ALL CAPITAL LETTERS
indicate De-activation.

^2^ Italics indicate a change in lighting status.

^3^ A time delay may exist between airfield lighting changes and panel
indicator changes, per AC 150/5340-30.

^4^ Momentary action push buttons

**APPENDIX 2. Terms.**

A.  [Airport Grant Assistance Program.]{.underline} Programs that
    provide funding for airport planning and development projects at
    airports in the National Plan of Integrated Airport Systems (NPIAS).

B.  [Alert Control.]{.underline} A single red back-lighted push button
    control, that when pressed indicates that the controller has
    acknowledged the "ALERT" and is aware that a malfunction has
    occurred.

C.  [Alternate Action (push buttons or toggle switches).]{.underline}
    When pushed in (push buttons) or toggled (toggle switches), the
    circuit locks in position. An additional push or toggle locks the
    circuit in the alternate position.

D.  [Controlled Stop Bars.]{.underline} Stop Bars controlled
    individually by controls located on the stop bar control panel.

E.  [Conventional Panel.]{.underline} Panels with switches and
    characters identifying the lighting system each switch controls.

F.  [Facsimile Panel.]{.underline} Panels that include a graphic layout
    of the airport surface for the lighting systems controlled from the
    panel.

G.  [Main Lighting Control Panel.]{.underline} The lighting control
    panel usually located in the airport traffic control tower which
    controls the airport lighting systems that do not require a
    dedicated panel.

H.  [Momentary Push Button.]{.underline} Push buttons which close the
    circuit and turn "ON" the system simultaneous with the manual push
    of the button.

I.  [RVR.]{.underline} Runway Visual Range

J.  [Stop Bar.]{.underline} Stop bar lights consist of elevated and
    in-pavement red fixtures that are installed at the runway holding
    position or ILS critical area holding position marking. Stop bars
    may be controllable by ATC and will include a system of in-pavement
    green taxiway centerline/lead-on lights at locations where aircraft
    will enter or cross a runway.

K.  [Surface Movement Guidance and Control System (SMCGS).]{.underline}
    A SMGCS system consists of the provision of guidance to, and control
    or regulation of, all aircraft, ground vehicles and personnel on the
    movement area of an aerodrome. Guidance relates to facilities,
    information and advice necessary to enable the pilots of aircraft,
    or the drivers of ground vehicles to find their way on the
    aerodrome, and to keep the aircraft or vehicles on the surfaces or
    within the areas intended for their use. Control or regulation means
    the measures necessary to prevent collisions and to ensure that the
    traffic flows smooth and freely.

L.  [Tactile Feedback.]{.underline} Providing a tangible reaction as a
    result of action, for example a "click" feel.

M.  [Uncontrolled Stop Bars.]{.underline} Stop bars designated by the
    SMCGS plan to remain "ON" during SMCGS operation below 1200 RVR
    which are not individually controlled by ATC. Uncontrolled stop bars
    are turned "ON" and "OFF" by the SMCGS Master switch, located on the
    main lighting control panel, and may be temporally turned "OFF" from
    the stop bar control panel when a special need arises.

**This page intentionally blank.**

**APPENDIX 3. Approval of Alternative Panel Labeling.**

The manufacturer must submit to the Federal Aviation Administration,
Airport Engineering Division, AAS-100, 800 Independence Avenue SW,
Washington, DC 20591 and, if applicable, the certification body
providing the initial qualification of the panel, a request for approval
of the alternative panel labeling method not mentioned in this
specification. Requests must include a complete description of the
labeling method, typical drawings, and other detailed information. The
third party certification body will then evaluate the alternative
labeling, with the necessary input from the FAA, to determine if it is
acceptable. All alternate methods receiving approval will be shared with
each of the approved third party certification bodies.

**This page intentionally blank.**

**APPENDIX 4. FIGURES.**

![](media/image3.wmf)

> **[Figure 1]{.underline}**. **Abbreviations, Legend and Brightness
> Steps**

![](media/image4.wmf)

**[Figure 2]{.underline}**. **Typical Conventional Lighting Control
Panel Layout I**

![](media/image5.wmf)

**[Figure 3]{.underline}**. **Typical Conventional Lighting Control
Panel Layout II**

![](media/image6.wmf)

**[Figure 4]{.underline}**. **Sample Class W Control Panel Layout**

![](media/image7.wmf)

**[Figure 5]{.underline}**. **Sample Control Panel with Push Button
Switches**

![](media/image8.wmf)

**[Figure 6]{.underline}**. **Sample Customized Lighting Control Panels\
**

![](media/image9.wmf)

**[Figure 7]{.underline}**. **Sample Back-lighted Facsimile Lighting
Control Panel**

![](media/image10.wmf)

**[Figure 8]{.underline}**. **Typical Case Layouts**

![](media/image11.wmf)

**[Figure 9]{.underline}**. **Typical Wiring Diagram for Conventional
Lighting Control Panels**

![](media/image12.wmf)

**[Figure 10A]{.underline}**. **Typical Switch Connections for Lighting
Control Panels**

![](media/image13.wmf)

**[Figure 10B]{.underline}**. **Typical Switch Connections for Lighting
Control Panels (cont.)**

![](media/image14.wmf)

**[Figure 11]{.underline}**. **Typical Land and Hold Short Lighting
Control Panel**

![](media/image15.wmf)

**[Figure 12.]{.underline}** **Typical Stop Bar Control Panel**