+-------------+-------------------------------+-----------------------+
| ![](me      |                               | **Advisory Circular** |
| dia/image1. |                               |                       |
| wmf){width= |                               |                       |
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| 33333333in" |                               |                       |
| height="    |                               |                       |
| 0.378472222 |                               |                       |
| 2222222in"} |                               |                       |
+-------------+-------------------------------+-----------------------+
| **U.S.      |                               |                       |
| D           |                               |                       |
| epartment** |                               |                       |
|             |                               |                       |
| **of        |                               |                       |
| Trans       |                               |                       |
| portation** |                               |                       |
|             |                               |                       |
| Federal     |                               |                       |
| Aviation    |                               |                       |
|             |                               |                       |
| Adm         |                               |                       |
| inistration |                               |                       |
+-------------+-------------------------------+-----------------------+

+-------------------------------+-------------------+-----------------+
| **Subject:** SPECIFICATION    | **Date:**         | **AC No.:**     |
| FOR DISCHARGE-TYPE FLASHING   | 09/19/05          | 150/5345-51A    |
| LIGHT EQUIPMENT               |                   |                 |
|                               | **Initiated by:** | **Change:**     |
|                               | AAS-100           |                 |
+-------------------------------+-------------------+-----------------+

1.  **PURPOSE.** This advisory circular (AC) contains the specifications
    for discharge-type flashing light equipment to be used for runway
    end identification lights (REIL) and for an omni-directional
    approach lighting system (ODALS).

2.  **EFFECTIVE DATES.** Effective six months after the issue date of
    this advisory circular, only equipment certified per the
    specifications herein will be listed per AC 150/5345-53, *Airport
    Lighting Equipment Certification Program.*

3.  **CANCELLATIONS.** Advisory Circular 150/5345-51, Change 1,
    *Specification for Discharge-Type Flashing Light Equipment*, dated
    01/04/82, is cancelled.

4.  **APPLICATION.** The specifications contained in this AC are
    recommended by the Federal Aviation Administration (FAA) in all
    applications involving development of this nature. For airport
    projects receiving Federal funds under the airport grant assistance
    program, the use of these standards is mandatory.

5.  **PRINCIPAL CHANGES.**

    a.  Added L-849V and L-859V to designate systems that can be
        operated from an airport 120/240 volt AC voltage source.

    b.  Added L-849I, and L-859I to designate systems that can be
        operated from a 6.6A constant current series circuit.

    c.  Expanded the criteria for control voltages.

    d.  Revised the lightning protection criteria.

    e.  Added a requirement for radiated and conducted emissions.

    f.  Upgraded environmental tests.

    g.  Due to availability problems associated with military
        temperature range components, changed the low temperature
        requirement to accommodate more commonly available industrial
        temperature range commercial integrated circuits and
        semiconductors.

    h.  Added a table to correlate equipment brightness levels with
        constant current regulator current steps.

    i.  Deleted the requirement for Sand and Dust environmental testing.

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

![](media/image2.png){width="2.5541666666666667in"
height="0.5923611111111111in"}

DAVID L. BENNETT

Director of Airport Safety and Standards

**TABLE OF CONTENTS**

[**1. SCOPE AND CLASSIFICATION. 1**](#scope-and-classification.)

[1.1 Scope. 1](#scope.)

[1.2 Classification. 1](#classification.)

[1.2.1 Types. 1](#types.)

[1.2.2 Styles. 1](#styles.)

[2. REFERENCED DOCUMENTS. 3](#referenced-documents.)

[2.1 General. 3](#general.)

[2.1.1 Federal Aviation Administration (FAA) Publications.
3](#federal-aviation-administration-faa-publications.)

[2.1.2 Military and Federal Publications.
3](#military-and-federal-publications.)

[2.1.3 Institute of Electrical and Electronics Engineers IEEE)/American
National Standards Institute (ANSI) Publications.
3](#institute-of-electrical-and-electronics-engineers-ieeeamerican-national-standards-institute-ansi-publications.)

[2.1.4 National Electrical Manufacturers Association (NEMA) Publication.
3](#national-electrical-manufacturers-association-nema-publication.)

[2.1.5 Powder Coating Institute (PCI) Publication.
3](#powder-coating-institute-pci-publication.)

[2.1.6 Illuminating Engineering Society of North America (IESNA)
Publication.
4](#illuminating-engineering-society-of-north-america-iesna-publication.)

[3. EQUIPMENT REQUIREMENTS. 7](#equipment-requirements.)

[3.1 Equipment to be Supplied by the Manufacturer.
7](#equipment-to-be-supplied-by-the-manufacturer.)

[3.1.1 Connecting Cables. 7](#connecting-cables.)

[3.2 System Description. 7](#system-description.)

[3.3 Environmental Requirements. 7](#environmental-requirements.)

[3.4 Photometric Requirements. 8](#photometric-requirements.)

[3.4.1 Effective Intensity. 8](#effective-intensity.)

[3.4.2 Flash Rate, Type L-849. 8](#flash-rate-type-l-849.)

[3.4.3 Flash Rate, Type L-859. 9](#flash-rate-type-l-859.)

[3.4.4 Color of Light. 9](#color-of-light.)

[3.5 Equipment Design Requirements. 9](#equipment-design-requirements.)

[3.5.1 General Operating Requirements.
9](#general-operating-requirements.)

[3.5.2 Optical Assembly. 9](#optical-assembly.)

[3.5.3 Control Unit. 10](#control-unit.)

[3.5.4 System Control. 12](#system-control.)

[3.5.5 Circuit Design. 13](#circuit-design.)

[3.5.6 Electrical Protection. 13](#electrical-protection.)

[3.6 Material and Parts. 14](#material-and-parts.)

[3.6.1 Light Covers. 15](#light-covers.)

[3.6.2 Gaskets. 15](#gaskets.)

[3.6.3 Special Component Requirements.
15](#special-component-requirements.)

[3.7 Finish. 15](#finish.)

[3.8 Assembly and Marking. 15](#assembly-and-marking.)

[3.9 System Nameplates. 15](#system-nameplates.)

[3.10 Instruction Manual. 16](#instruction-manual.)

[4. EQUIPMENT QUALIFICATION REQUIREMENTS.
17](#equipment-qualification-requirements.)

[4.1 Qualification Requirements. 17](#qualification-requirements.)

[4.1.1 Qualification Request. 17](#qualification-request.)

[4.2 Test Procedures. 17](#test-procedures.)

[4.2.1 Altitude Test. 17](#altitude-test.)

[4.2.2 Thermal Shock Test 17](#thermal-shock-test)

[4.2.3 Humidity. 17](#humidity.)

[4.2.4 Rain Test. 18](#rain-test.)

[4.2.5 Wind. 18](#wind.)

[4.2.6 Salt Fog Test. 18](#salt-fog-test.)

[4.2.7 Radiated and Conducted Emissions Tests.
18](#radiated-and-conducted-emissions-tests.)

[4.2.8 Transient Suppression Test. 19](#transient-suppression-test.)

[4.2.9 Solar Radiation (Sunshine) Test.
19](#solar-radiation-sunshine-test.)

[4.2.10 Visual Inspection. 19](#visual-inspection.)

[4.2.11 Photometric Tests. 19](#photometric-tests.)

[4.2.12 Dielectric Tests. 20](#dielectric-tests.)

[4.2.13 Lightning Protection Test. 20](#lightning-protection-test.)

[4.2.14 Operational Test. 20](#operational-test.)

[4.2.15 Eighty-hour Test. 20](#eighty-hour-test.)

[5. PRODUCTION TESTS. 23](#production-tests.)

[5.1 Visual Inspection. 23](#visual-inspection.-1)

[5.2 Photometric Tests. 23](#photometric-tests.-1)

[5.3 Dielectric Test. 23](#dielectric-test.)

[5.4 Operational Test. 23](#operational-test.-1)

[5.5 Five-And-One-Half-Hour Test. 23](#five-and-one-half-hour-test.)

[5.6 Failures. 23](#failures.)

[5.7 Production Test Equipment. 23](#production-test-equipment.)

[5.8 Production Test Records. 23](#production-test-records.)

LIST OF TABLES

[Table 1. Effective Intensity Requirements
8](#__RefHeading___Toc113252344)

[Table 2. Constant Current Regulator (CCR) Settings and Discharge
Lighting Equipment Intensity Levels 12](#__RefHeading___Toc113252345)

[Table 3. Single Intensity Switch Functions
12](#__RefHeading___Toc113252346)

[Table 4. Three Intensity Switch Functions
12](#__RefHeading___Toc113252347)

[Table 5. Conducted Emission Limits 19](#__RefHeading___Toc113252348)

[Table 6. Radiated Emission Limits 19](#__RefHeading___Toc113252349)

# 1. SCOPE AND CLASSIFICATION.

## 1.1 Scope.  {#scope. .Style-Heading-2-+-Black-Before:--3-pt-After:--6-pt}

The flashing light equipment in this specification is used for runway
end identification lights (REIL) and for an omni-directional approach
lighting system (ODALS).

## 1.2 Classification. {#classification. .Style-Heading-2-+-Black-Before:--3-pt-After:--6-pt}

Four types and six styles of flashing light equipment are in this
specification.

### 1.2.1 Types.

L-849V -- REIL powered by airport voltage power source

L-849I -- REIL powered by constant current 6.6 A power supply

L-859V -- ODALS powered by airport voltage power source

L-859I -- ODALS powered by constant current 6.6 A power supply

### 1.2.2 Styles.

A - Unidirectional, high intensity, one brightness step.

B - Omni-directional, high intensity, one brightness step.

C - Unidirectional, low intensity, one brightness step.

D - Omni-directional, low intensity, one brightness step.

E - Unidirectional, three brightness steps.

F - Omni-directional, three brightness steps.

All styles apply to Type L-849, only Style F applies to Type L-859.

**This page intentionally left blank.**

# 2. REFERENCED DOCUMENTS. 

## 2.1 General. {#general. .Style-Heading-2-+-Black-Before:--3-pt-After:--6-pt}

The following is a listing of documents referenced in this document.

### 2.1.1 Federal Aviation Administration (FAA) Publications. 

#### 2.1.1.1 FAA Advisory Circulars.  {#faa-advisory-circulars. .Style-Heading-4-+-Black}

> AC 150/5345-10 *Specification for Constant Current Regulators
> Regulator Monitors*
>
> AC 150/5345-43 *Specification for Obstruction Lighting Equipment*
>
> AC 150-5345-47 *Specification for Series to Series Isolation
> Transformers for Airport Lighting Systems*
>
> AC 150/5345-53 *Airport Lighting Equipment Certification Program*

#### 2.1.1.2 FAA Drawing. {#faa-drawing. .Style-Heading-4-+-Black}

> C-6046 *Frangible Coupling, Type 1 and 1A, Details*

#### 2.1.1.3 FAA Specifications. {#faa-specifications. .Style-Heading-4-+-Black}

> FAA-G-2100 *Electronic Equipment, General Requirements*
>
> FAA-E-1100 *Photometric Test Procedures for Condenser Discharge Lamps*

### 2.1.2 Military and Federal Publications.

#### 2.1.2.1 Military Specification and Standard. {#military-specification-and-standard. .Style-Heading-4-+-Black}

> MIL-C-**7**989 *General Specification for Light-transmitting Cover for
> Aeronautical Lights*
>
> MIL-STD-810 *Environmental Engineering Considerations and Laboratory
> Tests*

#### 2.1.2.2 Federal Standard. {#federal-standard. .Style-Heading-4-+-Black}

> FED-STD-595 *Colors Used in Government Procurement*

#### 2.1.2.3 Code of Federal Regulations (CFR). {#code-of-federal-regulations-cfr. .Style-Heading-4-+-Black}

> Code of Federal *Title 47*, *Telecommunications*, Part 15, *Radio
> Frequency*

Regulations (CFR) *Devices*

### 2.1.3 Institute of Electrical and Electronics Engineers IEEE)/American National Standards Institute (ANSI) Publications.

> IEEE C37.90 *Relays and Relay System Associated with Electric Power
> Apparatus*
>
> IEEE C62.41 *IEEE Recommended Practice on Surge Voltages in
> Low-Voltage AC Power Circuits*
>
> IEEE C62.45 *IEEE Recommended Practice on Surge Testing for Equipment*
>
> *Connected to Low-Voltage (1000 V and Less) AC Power Circuits*

### 2.1.4 National Electrical Manufacturers Association (NEMA) Publication.

> NEMA 250 *Enclosures for Electrical Equipment (1,000 Volts Maximum)*

### 2.1.5 Powder Coating Institute (PCI) Publication.

> PCI *Powder Coating - The Complete Finisher\'s Handbook, 3rd edition.*

### 2.1.6 Illuminating Engineering Society of North America (IESNA) Publication.

> IESNA *IESNA Handbook* (Document no. IESNA HB-9-2000)

**2.1.7 International Standardization Organization (ISO) Publication.**

> ISO-10012 *Measurement Management Systems -- Requirements for
> Measurement Processes*

Copies of FAA advisory circulars may be obtained from:

U.S. Department of Transportation\
Subsequent Distribution\
Office Ardmore East Business Center

3341 Q 75^th^ Ave.

Landover, MD 20785

> Tel: (301) 322-4961
>
> FAX: (301) 386-5394
>
> Website:
> [www.faa.gov/airports_airtraffic/airports/resources/advisory_circulars/]{.underline}

Copies of military standards and specifications publications may be
obtained from:

> DAPS/DODSSP
>
> Building 4, Section D
>
> 700 Robbins Avenue
>
> Philadelphia, PA 19111-5094
>
> Tel: (215)697-2179
>
> FAX: (215)697-1460
>
> Website: [dodssp.daps.dla.mil]{.underline}

Copies of Federal specifications and standards may be obtained from:

> Federal Supply Services
>
> Specification Section
>
> 470 L\'Enfant Plaza East
>
> SW Suite 8100
>
> Washington, DC 20407
>
> Tel: (202) 619-8925
>
> FAX: (202) 619-8985
>
> Website: [[www.dsp.dla.mil]{.underline}](http://www.dsp.dla.mil/)

Copies of Code of Federal Regulations (CFRs) may be obtained free of
charge from:

> Website: [www.gpoaccess.gov]{.underline}

Copies of International Electrical and Electronics Engineers standards
may be obtained from:

> IEEE Customer Service Center
>
> 445 Hoes Lane
>
> P.O. Box 1331
>
> Piscataway, NJ 08855-1331
>
> Tel: (800) 678-4333

FAX: (732) 981-0060 *(Worldwide)*

> FAX: (732) 981-9667
>
> E-mail: <storehelp@ieee.org>
>
> Website: [shop.ieee.org/ieeestore]{.underline}

Information about obtaining National Electrical Manufacturers
Association (NEMA) publications can be obtained from:

NEMA

1300 North 17th Street

Suite 1847

Rosslyn, VA 22209

Tel: (703) 841-3286

FAX: (703) 841 3386

Website: [www.nema.org]{.underline}

Copies of Powder Coating Institute documents may be obtained from:

PCI Publications

2121 Eisenhower Avenue

Suite 401

Alexandria, VA 22314

Tel: (800) 988-COAT

FAX: (703) 684-1711

Website: [www.powdercoating.org]{.underline}

Copies of Illuminating Engineering Society of North America documents
may be obtained from:

> IESNA
>
> 120 Wall Street, Floor 17
>
> New York, NY 10005
>
> Phone: (212) 248-5000
>
> FAX: (212) 248-5017/18
>
> Website: [www.iesna.org]{.underline}

Copies of the International Standardization Organization document is
available online from:

Website: [www.iso.ch]{.underline}

**This page intentionally left blank.**

# 3. EQUIPMENT REQUIREMENTS.

## 3.1 Equipment to be Supplied by the Manufacturer. {#equipment-to-be-supplied-by-the-manufacturer. .Style-Heading-2-+-Black-Before:--3-pt-After:--6-pt}

Each system must include the following items:

a\. Control Unit - one per system.

b\. Optical Assembly:

\(1\) Two optical heads for Type L-849I/V systems.

\(2\) Seven optical heads for Type L-859I/V systems.

c\. Power supply (as required for each system).

d\. Instruction manual - one per system.

### 3.1.1 Connecting Cables.

Cables for connecting between the control unit and optical assemblies or
between the optical head and power supply when installed remotely
(paragraph 3.5.2) are not included in this specification. However, the
instruction manual must provide sufficient information to guide the
installer in selecting the proper cables.

## 3.2 System Description. {#system-description. .Style-Heading-2-+-Black-Before:--3-pt-After:--6-pt}

The REIL system is used to identify the threshold (approach end) of a
visual or instrument non-precision runway and provides guidance to
pilots during approach for landing. The REIL consists of two
uni-directional or omni-directional simultaneous discharge-type flashing
lights. A light is located at each side of the runway threshold.

The ODALS system uses seven omni-directional discharge-type flashing
lights, five of which are installed on an extended runway centerline.
The lights flash in sequence and appear as a ball of light traveling
toward the runway threshold. This aids the pilot in determining which
runway is in use. In addition to the five centerline lights, two lights
are installed in a REIL configuration. The two REIL system lights flash
simultaneously after the last flash of the centerline lights.

## 3.3 Environmental Requirements. {#environmental-requirements. .Style-Heading-2-+-Black-Before:--3-pt-After:--6-pt}

The equipment must be designed for outdoor operation in the following
environmental conditions:

a\. Temperature: The equipment must operate at temperatures from (--40
to +131 degrees Fahrenheit (F) (--40 to +55 degrees Celsius (C)).

b\. Altitude: The equipment must operate at altitudes from sea level to
10,000 feet (3,000 meters).

c\. Temperature Shock: The equipment must operate and not be damaged by
the sudden application of cold water to the light emitting surface of an
optical assembly at its normal operating temperature.

d\. Humidity: The equipment must operate at a relative humidity of up to
100 percent, including conditions of dew or frost.

e\. Salt spray: The equipment must operate when exposed to a salt laden
atmosphere.

f\. Rain: The equipment must operate when exposed to windblown rain.

g\. Wind: The equipment must not be damaged when exposed to wind
velocities of 150 knots (278 kilometers per hour).

h\. Solar Radiation (Sunshine): If any non-metallic exterior components
or plastic/thermoplastic lenses are used, they must be resistant to
solar radiation.

## 3.4 Photometric Requirements. {#photometric-requirements. .Style-Heading-2-+-Black-Before:--3-pt-After:--6-pt}

### 3.4.1 Effective Intensity.

The optical assemblies must meet the effective intensity requirements
listed in Table 1 with a tolerance of plus or minus 50 percent for the
following beam patterns:

a\. Styles A, C, and E: 10 degrees vertical by 30 degrees horizontal.

b\. Styles B, D, and F: from 2 to 10 degrees vertical by 360 degrees
horizontal.

The effective intensity must be maintained when the equipment is
operated within plus or minus 10 percent of the design input voltage or
when operated at the design input voltage and subjected to the
temperature range per paragraph 3.3a. Light output below the vertical
cutoff points must be minimized.

[]{#__RefHeading___Toc113252344 .anchor}Table 1. Effective Intensity
Requirements

+-------------+-------------+-------------+-------------+-------------+
| Type        | Style       | Effective   |             |             |
|             |             | Intensity   |             |             |
|             |             | (candelas   |             |             |
|             |             | (cd))       |             |             |
|             |             |             |             |             |
|             |             | Brightness  |             |             |
|             |             | Step        |             |             |
+-------------+-------------+-------------+-------------+-------------+
|             |             | High        | Medium      | Low         |
+-------------+-------------+-------------+-------------+-------------+
| L-849       | A           | 15,000      | \--         | \--         |
+-------------+-------------+-------------+-------------+-------------+
| L-849       | B           | 5,000       | \--         | \--         |
+-------------+-------------+-------------+-------------+-------------+
| L-849       | C           | \--         | \--         | 700         |
+-------------+-------------+-------------+-------------+-------------+
| L-849       | D           | \--         | \--         | 700         |
+-------------+-------------+-------------+-------------+-------------+
| L-849       | E           | 15,000      | 1,500       | 300         |
+-------------+-------------+-------------+-------------+-------------+
| L-849       | F           | 5,000       | 1,500       | 300         |
+-------------+-------------+-------------+-------------+-------------+
| L-859       | F           | 5,000       | 1,500       | 300         |
+-------------+-------------+-------------+-------------+-------------+

**NOTE:** *For styles A, C, and E, corners may be rounded on a 5-degree
radius to determine compliance.*

c\. The effective intensity for flashing lights must be determined with
the following formula by the methods described in the IESNA Handbook.

> $$I_{e} = \left( \int_{t_{1}}^{t_{2}}\text{Idt} \right)\left( 0\text{.}2 + \left( t_{2} - t_{1} \right) \right)$$
>
> Where:
>
> I~e~ = Effective intensity (Candela)
>
> I = Instantaneous intensity (Candela)
>
> t~1~, t~2~ = Times in seconds of the beginning and end of that part of
> the flash when the value of I exceeds I~e~. This choice of the times
> maximizes the value of I~e~.

d\. If multiple pulses are used to form what is apparent to an observer
as a single flash, see AC 150/5345-43E, paragraph 3.4.1.1, for
additional descriptions and effective intensity measurement methods.

### 3.4.2 Flash Rate, Type L-849.

a\. For L-849V/I Style B, D, and F: the flash rate must be 60 flashes
per minute (fpm) plus or minus 10 percent.

b\. For L-849V/I Style A, C, and E: the flash rate must be 120 flashes
per minute plus or minus 10 percent.

c\. Both optical assemblies must flash simultaneously with no more than
20 milliseconds of difference between them.

### 3.4.3 Flash Rate, Type L-859.

a\. The optical heads must flash at a rate of 60 fpm, 10 percent
tolerance.

b\. The flash sequence must start with optical assembly located farthest
from the runway threshold. The remaining assemblies must flash in
sequence toward the runway threshold.

\(1\) The interval between flashes of the projected runway centerline
units must be 1/15 second.

\(2\) The interval between the flash of the last runway centerline
optical assembly and the simultaneous flashes of the REIL configuration
must be 4/15 second.

c\. The interval between the REIL configuration flash and the start of a
new cycle must be 7/15 second.

d\. All flash intervals must be within 10 percent of the specified time.

### 3.4.4 Color of Light.

The color of light emitted by the optical head assemblies must be
equivalent to that produced by an unfiltered xenon gas discharge lamp
(approximately 4,000-8,000 degrees Kelvin).

## 3.5 Equipment Design Requirements. {#equipment-design-requirements. .Style-Heading-2-+-Black-Before:--3-pt-After:--6-pt}

### 3.5.1 General Operating Requirements.

a\. The discharge-type flashing light systems must be capable of for
continuous operation.

b\. Style E and F equipment must have three intensity settings: high,
medium, and low.

c\. All systems must have provisions for remote control per paragraph
3.5.4.2

d\. Lamp intensity changes must be completed within 1.50 seconds after
initiating the command.

e\. The power input to the optical assembly may be interrupted during
intensity step changes.

f\. The system design must prohibit the occurrence of flashes other than
per paragraphs 3.4.2 and 3.4.3.

### 3.5.2 Optical Assembly.

a\. The optical assembly consists of an optical head and a power supply.

b\. The Type L-849 optical head must be attached to the power supply
enclosure.

c\. Type L-859 optical heads must be capable of being attached to the
power supply enclosure or installed remotely up to 150 feet (45 m) from
the power supply.

d\. Brackets must be provided for mounting the optical head directly to
the power supply enclosure or onto a single vertical 2-inch Electrical
Metallic Tubing (EMT) conduit for remote locations.

e\. The Type L-859 optical head must weigh no more than 12 pounds (5.5
kg).

f\. When installed, the overall height of the Type L-849 optical
assembly must not exceed 34 inches (0.85 m) above grade.

g\. Frangible mounting hardware per FAA Drawing C-6046 (or equivalent)
must be provided for Type L-849 optical assemblies and for Type L-859
optical heads mounted on 2-inch EMT conduit.

#### 3.5.2.1 Flash Tube. {#flash-tube. .Style-Heading-4-+-Black}

The flash tube must operate without failure or adjustment for a minimum
of 1,000 hours while meeting the flash rates and high intensity
requirements per paragraph 3.4.1. The effective intensity must not
decrease more than 30 percent during this time period and flash skipping
(misfiring) must be less than one percent with no skips occurring
consecutively.

#### 3.5.2.2 Power Supply. {#power-supply. .Style-Heading-4-+-Black}

The power supply provides power and triggering pulses to the optical
head.

a\. A power supply may power more than one optical head assembly.

b\. The power supply must be designed to operate safely and reliably
with the voltages and amperages required and with safety features
consistent with those required for the control unit.

c\. The power supply must be housed in a National Electrical
Manufacturers Association (NEMA) type 4 (or equal) enclosure with a
hinged access door and provision for padlocking.

d\. Frangible points per FAA Drawing C-6046 (or equivalent) and
associated hardware must be provided to mount the power supply enclosure
on its foundation

#### 3.5.2.3 Aiming and Leveling. {#aiming-and-leveling. .Style-Heading-4-+-Black}

a\. Style A, C, and E optical heads must be designed so the light beam
may be aimed in a vertical and horizontal plane.

b\. A positive locking device must be provided to prevent accidental
movement of the optical head after aiming.

c\. The optical head must be adjustable vertically from 0 to 15 degrees
and horizontally 15 degrees each side of a zero reference point.

d\. Aiming reference scales must be graduated in a maximum of one degree
increments.

e\. Style B, D, and F optical heads must have provisions to permit
adjustment, after installation, of up to 6 degrees for leveling.

### 3.5.3 Control Unit.

The control unit powers and controls the individual optical assemblies.

**NOTE:** *At the manufacturer\'s option, the control unit may be
integrated into a power supply enclosure; however, the following
requirements must still be met with regard to any power supply/control
unit.*

a\. The control unit must be designed to operate from a 120/240 volt AC
source or optionally from other standard commercial voltages.

b\. The control unit must be housed in a NEMA type 4 enclosure (or
equal) with a hinged door and have provisions for padlocking.

c\. Terminal blocks with a suitable voltage rating must be located near
the side or bottom of the enclosure for termination of external power
and control wires feeding into the control unit. The terminal blocks
must accommodate No. 8 through No. 20 American Wire Gauge (AWG) wires
with an insulation rating up to 600V.

d\. Mounting lugs or bolts must be provided on the back of the enclosure
to allow vertical mounting.

e\. If the control unit is not integrated with the power supply,
frangible points per FAA Drawing C-6046 (or equivalent) and associated
hardware must be provided to mount the control enclosure on its
foundation.

f\. A service entrance power disconnect switch must be furnished when
utilizing either a voltage or constant current power source.

g\. If the disconnect switch is mounted external to the control unit
enclosure, it must be weatherproof and have provisions for locking.

h\. A ground terminal must be provided on the outside of the control
unit enclosure.

#### 3.5.3.1 Elapsed Time Meter. {#elapsed-time-meter. .Style-Heading-4-+-Black}

The manufacturer may optionally offer elapsed time meters in either
L-849 or L-859 power supply assemblies.

a\. The meter elapsed time must be in hours up to 999.

b\. The meter must be a recycling type.

#### 3.5.3.2 Series Circuit Adapter {#series-circuit-adapter .Style-Heading-4-+-Black}

An optional adapter may be provided to allow the discharge-type lighting
system to be powered by an airport series lighting circuit (that may or
may not have other types of lighting on the same circuit) which is
energized by a constant current regulator as described in AC
150/5345-10, *Specification for Constant Current Regulators Regulator
Monitor*. When the runway edge lights are on, the discharge-type
lighting equipment must be on.

a\. The circuit adapter must be compatible with series to series
isolation transformer per AC 150/5345-47, *Specification for Series to
Series Isolation Transformers for Airport Lighting Systems.* The input
to the isolation transformer will be either from a 6.6 or 20 ampere
series lighting circuit. The output of the transformer must be 6.6A to
the series lighting circuit adapter. The manufacturer does not supply
the isolation transformer or any associated cabling.

b\. The discharge-type lighting system must operate and be compatible
with all approved constant current regulators. A series circuit adapter
must provide ON/OFF control of Type L-849I, Styles A,B,C, and D single
intensity equipment depending on the current level in the runway
lighting circuit. For Type L-849I Styles E and F and Type-L859 Style F
three intensity level equipments, see Table 2 to correlate regulator
current steps with discharge-type lighting equipment brightness levels.

c\. The series circuit adapter circuitry may be incorporated into the
control unit or housed in a separate enclosure. Any separate enclosure
must pass all the environmental tests in this specification.

d\. Approved regulator manufacturers (listed in AC 150/5345-53, *Airport
Lighting Equipment Certification Program*) will make available
oscilloscope photographs or digital images (e.g., JPG, TIF, BMP) of the
output waveforms of their regulators; the manufacturer of the flashing
light equipment is responsible for any lack of compatibility.

[]{#__RefHeading___Toc113252345 .anchor}Table 2. Constant Current
Regulator (CCR) Settings and Discharge Lighting Equipment Intensity
Levels

### 3.5.4 System Control.

#### 3.5.4.1 Local Control. {#local-control. .Style-Heading-4-+-Black}

All discharge-type lighting systems must have a local control capability
located in the control unit for maintenance purposes. For equipment
Styles A, B, C, and D, a three position switch must be per Table 3.

[]{#__RefHeading___Toc113252346 .anchor}Table 3. Single Intensity Switch
Functions

  ------------------------- --------------------------------------------------
  **[Switch                 **[Switch Function]{.underline}**
  position]{.underline}**   

  REMOTE                    System controlled by remote control
                            (ON/OFF/Intensity)

  ON                        System ON

  OFF                       System OFF
  ------------------------- --------------------------------------------------

For equipment Styles E and F, the switch must be a five position rotary
switch with mechanical detents, labeled as follows to perform the
indicated functions per Table 4.

[]{#__RefHeading___Toc113252347 .anchor}Table 4. Three Intensity Switch
Functions

  ------------------------- --------------------------------------------------
  **[Switch                 **[Switch Function]{.underline}**
  position]{.underline}**   

  REMOTE                    System controlled by remote control
                            (ON/OFF/Intensity)

  OFF                       Power and control circuits de-energized

  LOW                       System operating at LOW intensity flash

  MEDIUM                    System operating at MEDIUM intensity flash

  HIGH                      System operating at HIGH intensity flash
  ------------------------- --------------------------------------------------

#### 3.5.4.2 Remote Control.  {#remote-control. .Style-Heading-4-+-Black}

a\. The Control Unit for Types L-849V and L-859V must have provisions
for remote control by a switch or by a radio receiver/decoder unit. The
operating voltage for the remote control system must not exceed 120
volts AC or plus 48 volts DC and is applied only when the local control
is in the REMOTE position.

b\. For single intensity discharge-type lighting systems (Styles A, B,
C, and D), ON/OFF control is provided via 3 terminals (120 volts AC or
plus 48 volts DC, ON, and Neutral).

c\. For three intensity discharge-type lighting systems (Styles E and
F), five terminals must be provided for control, as follows:

\(1\) Low Intensity

\(2\) Medium Intensity

\(3\) High Intensity

\(4\) 120 volts AC or plus 48 volts DC

\(5\) Neutral

##### 3.5.4.2.1 Intensity-Step Switching.

a\. A 120-volt AC or plus 48 volts DC source terminal fused for a
150-watt load shall be provided to activate the remote-control switching
network.

b\. For single-step style systems, the remote switch will close a
circuit between the 120-volt or plus 48 volt DC source and an "on"
terminal; the system will turn on when this terminal receives the
120-volt AC or plus 48 volt DC potential.

c\. For multiple-step systems, the 120-volt AC or plus 48 volts DC
potential (terminal (4)) is provided only when the local control switch
is in the "remote" position.

d\. The remote switching network will return the 120-volt AC or plus 48
volts DC potential to terminal (1), (2), or (3), and the system will
turn on to the selected intensity.

e\. If more than one intensity terminal is energized, the system shall
operate at the highest intensity selected.

### 3.5.5 Circuit Design. 

The circuit design and construction must be in accordance with highest
standards, with emphasis on reliability and long life. The brightness
control circuit must be designed such that it will revert to the lowest
brightness setting in the event of failure.

### 3.5.6 Electrical Protection.

The system must be protected against electrical transients found in the
airport environment as described below.

#### 3.5.6.1 Transient Suppression.  {#transient-suppression. .Style-Heading-4-+-Black}

To protect against input power line surges, the system must withstand
without operational interruption or damage a 50-millisecond pulse with a
peak value of 500 volts superimposed on the input power lines.

#### 3.5.6.2 Dielectric Protection. {#dielectric-protection. .Style-Heading-4-+-Black}

When installed in an operational environment per the manufacturer\'s
instructions, the system must withstand repeated applications of a 5,000
volt potential between the equipment case (electrical ground) and any
control or power conductor for 10 milliseconds.

#### 3.5.6.3 Lightning Protection. {#lightning-protection. .Style-Heading-4-+-Black}

a\. Lightning arresters must be installed on all ungrounded conductors
as near as possible to their cabinet entry point.

b\. The arrester\'s spark-over voltage must be less than the unit\'s
dielectric withstand rating (paragraph 3.5.6.2). Telephone or gap-type
arresters must not be used.

#### 3.5.6.4 Radiated and Conducted Emissions. {#radiated-and-conducted-emissions. .Style-Heading-4-+-Black}

a\. The discharge light system must cause minimal conducted emissions
(power lines/interface cables) and radiated RF emissions that may cause
harmful interference to FAA or other airport equipment located on or
near the airport (see paragraph 4.2.7 for measurements).

b\. Discharge lighting equipment is classified as an incidental radiator
(47 CFR § 15.13). This applies to equipment that does not intentionally
generate any radio frequency energy, but may create such energy as an
incidental part of its intended operations.

c\. A discharge lighting system must employ sound engineering practices
to minimize the risk of harmful interference. Since the equipment is
operated in an environment where radiated RF and conducted emissions are
a concern, both the conducted and radiated limits must be tested.

#### 3.5.6.5 Electromagnetic Interference (EMI).  {#electromagnetic-interference-emi. .Style-Heading-4-+-Black}

EMI sensitive components, such as timers or controllers, must be
adequately shielded or otherwise protected.

#### 3.5.6.6 Interlock Switches. {#interlock-switches. .Style-Heading-4-+-Black}

a\. Interlock switches must be used in the control unit and power
supplies so that opening the enclosure will:

\(1\) Disconnect the input power.

\(2\) Safely discharge all voltages over 150 volts to 50 volts within 30
seconds. This discharge must occur, even if components that normally
draw current from the high voltage power supply are removed.

\(3\) Means must be provided to defeat the interlock with the door open
for maintenance purposes.

b\. The system design must include bleeder resistors to discharge the
high voltage (\>150V) power supply to 50 volts within 5 minutes after
input power is disconnected. This feature must serve as a back-up to the
interlock activated bleeder circuit.

c\. If an interlock is not provided on an optical assembly, a warning
label must be attached advising the maintainer not to open the optical
assembly until the system power has been disconnected and the high
voltage power supply is safely discharged.

## 3.6 Material and Parts. {#material-and-parts. .Style-Heading-2-+-Black-Before:--3-pt-After:--6-pt}

a\. All materials and parts used in the discharge lighting system must
be suitable for the intended purpose and adequately protected against
corrosion.

b\. All assembly hardware, including screws, bolts, nuts, washers, and
latches must be 18-8 stainless steel.

c\. All wiring and components must have adequate capacity and must not
be operated in excess of the manufacturer\'s ratings.

### 3.6.1 Light Covers.

a\. Light transmitting covers for the optical head assembly must be per
MIL-C-7989B (8 March 1971), paragraph 1.2, Class A for glass and Class D
for plastic. The light transmitted by the covers must not be noticeably
different in chromaticity from the illuminant.

b\. If plastic or thermoplastic light transmitting covers are used, they
must withstand prolonged exposure to ozone and ultraviolet radiation
with no degradation.

### 3.6.2 Gaskets.

a\. Gasket material used must withstand temperatures from --40 to +131
degrees F (--40 to +55 degrees C).

b\. Gasket materials used in the optical head assembly must withstand
prolonged exposure to ultraviolet radiation and ozone with no
degradation.

### 3.6.3 Special Component Requirements.

a\. All materials and components (including the insulation on wiring)
which are located in or near the optical head assembly must be resistant
to ultraviolet radiation and ozone.

b\. Flash capacitors must be suitable for the application and have a
service life greater than 1 year in continuous operation at the working
voltage.

## 3.7 Finish. {#finish. .Style-Heading-2-+-Black-Before:--3-pt-After:--6-pt}

a\. The exterior of all units must be painted with 3 coats of aviation
orange paint, matching color No. 12197, FED-STD-595.

b\. Interior surfaces must be painted white.

c\. Painting must be done per FAA-STD-012.

d\. Nonferrous enclosures will not require painting if the exterior
material color matches aviation orange; otherwise the exterior surfaces
must receive the 3 coats of paint.

e\. Powder coatings with equivalent color, appearance, and corrosion
protection properties may be substituted for paint. See Powder Coating
Institute publication: *Powder Coating -* *The Complete Finisher\'s
Handbook*, 3rd edition, for guidance about the selection, application,
and corrosion resistance.

## 3.8 Assembly and Marking. {#assembly-and-marking. .Style-Heading-2-+-Black-Before:--3-pt-After:--6-pt}

a\. All components must be properly assembled and marked.

b\. Each electrical component or part thereof must be identified by a
reference designation marked adjacent to the physical location of the
part of the equipment and readily visible to maintenance personnel.

c\. Identification markings must be identical to reference designations
used in instruction books for the equipment.

d\. All wiring must, where possible, be grouped, color coded, laced into
cables, neatly clamped, and properly marked.

e\. Wire marking must be per FAA-G-2100g, paragraph 3.3.1.3.10.2

## 3.9 System Nameplates. {#system-nameplates. .Style-Heading-2-+-Black-Before:--3-pt-After:--6-pt}

Identification data must be permanently affixed to each equipment unit
(optical head, power supply, control unit, etc.) and must contain at
least the following information:

a\. Name of unit (optical head, power supply, etc.).

b\. Type and style.

c\. Manufacturer's name and address.

d\. Manufacturer's part Number.

## 3.10 Instruction Manual. {#instruction-manual. .Style-Heading-2-+-Black-Before:--3-pt-After:--6-pt}

An instruction manual must be supplied as part of each system and must
contain the following information:

a\. Safety precautions used while maintaining the equipment.

b\. Theory of circuit and system operation.

c\. Complete schematics and interconnecting wiring diagrams.

d\. Complete parts list with each circuit component keyed to the
designation assigned on schematics or wiring diagrams. Complete
information shall be given for each part to permit ordering for
replacement purposes. This information shall include the component's
rating, name of the manufacturer, and the manufacturer's part number.

e\. Recommended preventive maintenance.

f\. Troubleshooting procedures.

g\. Physical characteristics (weight, size, mounting dimensions).

h\. Installation instructions.

i\. Operating instructions.

# 4. EQUIPMENT QUALIFICATION REQUIREMENTS. 

## 4.1 Qualification Requirements. {#qualification-requirements. .Style-Heading-2-+-Black-Before:--3-pt-After:--6-pt}

### 4.1.1 Qualification Request.

Procedures for qualifying equipment to be furnished under the Federal
grant assistance program for airports are contained in AC 150/5345-53B,
*Airport Lighting Equipment Certification Program*, Appendix 2.

## 4.2 Test Procedures.

The environmental tests specified in the following paragraphs must be
conducted on a system (a control unit and at least one optical
assembly). Operational tests required during or after environmental
tests per the particular test methods must consist of a least one
operational cycle per paragraph 4.2.14 with all test components
connected together.

Where tests are conducted on an abbreviated system (a system without a
complete complement of optical assemblies), the load imposed by the
missing components and their interconnecting cables must be simulated by
equivalent circuits.

A photometric test as described in this section must be performed before
conducting any environmental tests. The same units must be used
throughout the tests.

### 4.2.1 Altitude Test.

The equipment must be tested for low pressure (altitude) per
MIL-STD-810F (1 January 2000), Method 500.4, Procedure II, Operation/Air
Carriage.

a\. The maximum altitude must be 10,000 feet (2,000 meters).

b\. The maximum chamber ambient air temperature must be 131 degrees F
(55 degrees C).

c\. Allow the equipment to temperature stabilize.

d\. Perform an operational test of the equipment after one hour of
altitude and high temperature soak. Failure of the equipment to operate
properly will be cause for rejection.

e\. After the test chamber has depressurized and cooled, examine the
equipment components for evidence of discoloration, cracking, or
swelling. Any deterioration of materials will be cause for rejection.

### 4.2.2 Thermal Shock Test

The equipment must be installed as in normal use and operated at maximum
intensity until the temperatures have stabilized. At a temperature
between 32-41 degrees F (0-5 degrees C), water must be applied in
droplets, having a diameter range between 0.5 and 4.5 millimeters, to
the light face. There must be no cracking of glass, metal, or plastic as
a result of this test.

### 4.2.3 Humidity.

The equipment must be tested for humidity tolerance per MIL-STD-810F (1
January 2000), Method 507.4, Humidity.

a\. The chamber maximum temperature must be 131 degrees F (55 degrees C)
maximum for this test.

b\. Subject the equipment to five cycles (48 hours per cycle) at 95%
relative humidity at a maximum temperature per paragraph 4.2.1.4a. See
MIL-STD-810F (1 January 2000), Figure 507.4-1 for a graph of humidity
cycles. Perform an equipment operational test at hour 24 of the test
cycle.

c\. At the conclusion of testing, inspect the equipment and components.
Any evidence of water (condensation), corrosion, discoloration,
swelling, or cracking will be cause for rejection.

### 4.2.4 Rain Test. 

a\. The rain test must be conducted per Method 506.4, Procedure I,
paragraph 4.4.2 of\
MIL-STD-810F (1 January 2000).

\(1\) A simulated rainfall rate of 4 inches per hour or 1.7 millimeters
per minute must be used.

\(2\) Wind velocity must be 40 miles per hour or 18 meters per second.

\(3\) The EUT must be at ambient temperature for this test.

b\. Perform an operability test of the equipment under test (EUT) prior
to the rain test.

**CAUTION:** *Perform a preliminary inspection before energizing the
equipment to remove any accumulated water and prevent a potential shock
hazard to test personnel*.

c\. At the conclusion of rain testing and after a preliminary inspection
for water intrusion, perform an operational test of the equipment.

d\. If the EUT fails to operate or water has penetrated the equipment,
it is a cause for rejection.

**NOTE:** *If the housing is ventilated, small amounts of water may
penetrate the equipment during this test but must not be cause for
rejection. Water penetration must not prevent proper operation of the
equipment, and a path of egress for the water must be provided.*

### 4.2.5 Wind.

An optical head mounted to a power supply enclosure and one mounted to a
2-inch EMT conduit must be subjected to a 150-knot wind applied
perpendicular to the optical head face. Distress or damage to any part
of the assembly must be cause for rejection.

### 4.2.6 Salt Fog Test. 

a\. A salt fog test must be conducted to determine the discharge
lighting equipment resistance to a salt laden atmosphere. Tests must be
conducted per MIL-STD-810F (1 January 2000), Method 509.4, Salt Fog,
Paragraph 4.5.2, Procedure I.

b\. At the conclusion of salt fog testing, inspect the EUT for evidence
of corrosion, flaking paint/powder coating, gasket failure, and in
enclosed volumes for water damage where condensation may have occurred.
Any evidence of the preceding will be cause for rejection.

c\. Inspect circuit boards and components for evidence of corrosion,
swelling, or discoloration. Any evidence of the preceding will be cause
for rejection.

**CAUTION:** *Energize the EUT only after it has been determined there
will be no shock hazard.*

d\. Energize the EUT and perform an operational test. Failure of the
equipment to operate properly will be cause for rejection.

### 4.2.7 Radiated and Conducted Emissions Tests.

a\. The discharge lighting equipment must be in its normal operating
configuration for the following tests.

b\. The equipment tested must not exceed the conducted power line
emissions per 47 CFR § 15.107b:

[]{#__RefHeading___Toc113252348 .anchor}Table 5. Conducted Emission
Limits

+-----------------------+-----------------------+-----------------------+
| Frequency of Emission | Quasi-peak Emissions  | Average Emissions     |
|                       |                       | dB/μV                 |
| (MHz)                 | Decibels per          |                       |
|                       | microvolt             |                       |
|                       |                       |                       |
|                       | dB/μV                 |                       |
+-----------------------+-----------------------+-----------------------+
| 0.15 - 0.5            | 79                    | 66                    |
+-----------------------+-----------------------+-----------------------+
| 0.5 -30.0             | 73                    | 60                    |
+-----------------------+-----------------------+-----------------------+

c\. The equipment tested must not exceed the radiated emission limits
per 47 CFR § 15.109b for the following limits at 33 feet (10 meters):

[]{#__RefHeading___Toc113252349 .anchor}Table 6. Radiated Emission
Limits

+-----------------------------+----------------------------------------+
| Frequency of Emission       | Field Strength                         |
|                             |                                        |
| (MHz)                       | (microvolts per meter)                 |
+-----------------------------+----------------------------------------+
| 30-88                       | 90                                     |
+-----------------------------+----------------------------------------+
| 88-216                      | 150                                    |
+-----------------------------+----------------------------------------+
| 216-960                     | 210                                    |
+-----------------------------+----------------------------------------+
| Above 960                   | 300                                    |
+-----------------------------+----------------------------------------+

d\. If the equipment is not per the limits in paragraph 4.2.7b and c,
the manufacturer must be advised that there is a potential for harmful
interference with the operation of FAA or other airport equipment.

### 4.2.8 Transient Suppression Test.

The control unit and one optical assembly shall be tested for
conformance to the requirements specified in 3.5.6.1. The test method
shall be developed using IEEE C37.90 as a guide.

### 4.2.9 Solar Radiation (Sunshine) Test.

The equipment must be in its normal operational configuration for this
test.

a\. A sunshine test must be conducted in accordance with MIL-STD-810F (1
January 2000), Method 505.4, paragraph 4.4.3, Procedure II for all
discharge lighting equipment with nonmetallic exterior parts or
plastic/thermoplastic light covers.

b\. The discharge lighting equipment must be subjected to a minimum of
56 cycles.

c\. Perform an operational test of the equipment after 56 cycles.

d\. Any evidence of deterioration of plastic parts: chalking, bleaching,
cracking, hazing, or color changes (yellowing) to the thermoplastic
lenses of the test unit must be causes for rejection.

e\. For plastic/thermoplastic optical lenses or covers, the photometric
performance must be measured after this test.

### 4.2.10 Visual Inspection.

The equipment must be visually inspected for workmanship, fabrication,
finish, painting, and adequacy of selected parts.

### 4.2.11 Photometric Tests.

Photometric tests must be conducted on equipment to determine compliance
with 3.4. Photometric tests must be conducted per FAA-E-1100,
*Photometric Test Procedures for Condenser Discharge Lights.* Test
results must include a graph showing the isocandela curve of effective
intensity for each brightness setting and oscilloscope photographs or
digital image files (e.g., TIF, JPG, BMP) of the discharge pulse shape.

### 4.2.12 Dielectric Tests.

a\. A dielectric test must be made on power and control wiring of the
system.

b\. The test must be made by applying both positive and negative 5kV
pulses, 10 milliseconds minimum, between input power and control wires
and ground (equipment case).

c\. The test must continue until 10 pulses have been applied during a
10-second interval or until a 5kV DC voltage has been applied for 10
seconds.

d\. The equipment must be capable of normal operation after this test.

e\. After completion of the dielectric test, a 1,000-volt DC insulation
tester must be used to check the same points.

f\. The resistance to ground, as observed with the insulation tester,
must not be less than 300 megohms.

g\. Components not designed for the high voltage of the insulation
tester such as capacitors, rectifiers, printed circuit boards, transient
suppressors, etc., may be disconnected for this test.

h\. Production units need only be checked with the insulation tester.

### 4.2.13 Lightning Protection Test.

**NOTE**: *The equipment might be damaged by the following tests,
perform them only after all other testing is complete.*

a\. Subject the equipment power line and control line inputs to 3 pulses
at 15 second intervals to a standard 1.2/50 microsecond - 8/20
microsecond combination wave of 4,000 volts at 3,000 amps.

b\. See IEEE C62.41-1991 Section 9.3 for test condition and test
generator information.

c\. See IEEE C62.41-1991 Section 9.4 for a detailed combination and ring
wave generation and parameters discussion.

d\. See also IEEE C62.45, *IEEE Recommended Practice on Surge Testing
for Equipment Connected to Low-Voltage (1000 V and less) AC Power
Circuits* for guidance about equipment test methods.

### 4.2.14 Operational Test.

a\. All components that will be part of a particular system must be
connected together when undergoing operational tests.

b\. For qualification testing, the components must be interconnected
with the maximum length of interconnecting cable specified (paragraph
3.5.2c).

c\. Proper operation of the interlock switches must be verified.

d\. All operating requirements of the equipment must be checked over the
full range of input voltage variations at the control unit power input
terminal.

e\. The brightness switching operation of the components must be
verified through the remote control inputs provided in the control unit.

### 4.2.15 Eighty-hour Test.

An 80-hour continuous operation test must be performed on the system.
All intensities must be checked using the remote control to cycle the
system as described below, with a 10 percent tolerance on the time
intervals specified.

a\. Low Intensity - 5 minutes.

b\. Off - 2 seconds.

c\. Medium Intensity - 5 minutes.

d\. Off - 2 seconds.

e\. High Intensity - 5 minutes.

f\. Off - 60 seconds.

g\. Repeat Cycle, starting with a.

The local control switch must be manually cycled through the off, low,
medium, and high intensity step positions a minimum of 20 times at the
completion of the 80-hour test. Flashtubes used in the 80-hour test must
not be shipped as part of the equipment but must be replaced with new
flashtubes.

**This page intentionally left blank.**

# 5. PRODUCTION TESTS.

Production units must be subjected to the following tests:

## 5.1 Visual Inspection. 

Per paragraph 4.2.10.

## 5.2 Photometric Tests.

a\. Style A, C, and E production units shall be checked at the beam
center, ± 15 degrees horizontally from the beam axis, and ± 5 degrees
vertically from the beam axis.

b\. Style B, D, and F production units shall be checked at 2, 6, and 10
degrees vertically for maximum and minimum points to determine
compliance with 3.4.1.

## 5.3 Dielectric Test.

Per paragraph 4.2.12.

## 5.4 Operational Test.

Per paragraph 4.2.14.

## 5.5 Five-And-One-Half-Hour Test. 

All production units must have a 5½-hour continuous operational test
performed on them using the remote control inputs as follows:

a\. High Intensity - 5 hours, minimum.

b\. Per paragraph 4.2.15, cycle the equipment through steps a through
g - one-half hour, minimum.

c\. The local control switch must be manually cycled through the off,
low, medium, and high intensity positions a minimum of 20 times at the
completion of the 5½-hour test.

## 5.6 Failures.

Units failing any part of the production test must be repaired and
undergo a complete retest per paragraphs 5.1 through 5.5.

## 5.7 Production Test Equipment.

All measuring and test equipment used in the production of discharge
lighting equipment classified under paragraph 1.2 must have their
accuracy and precision maintained by a calibration program with
traceability to ISO-10012 *Measurement Management Systems --
Requirements for Measurement Processes* or current industry
accreditation criteria. The manufacturer must show that all production
photometric testing equipment correlates to the certifying laboratory\'s
equipment to within plus or minus 5 percent. Photometric testing must be
performed in a properly designed photometric range using a calibrated
photometer. All photometric measurements must be based on a minimum five
flash average.

## 5.8 Production Test Records.

The manufacturer shall maintain records showing actual test results of
all tests required by paragraphs 5.2 through 5.5 for a period of three
years. These records shall be traceable to the units tested by serial
number.

**This page intentionally left blank.**