+-------------------------------------------+--------------------------+
| ![](media/                                | **Advisory**             |
| image1.wmf){width="0.38472222222222224in" |                          |
| height="0.3645833333333333in"}            | **Circular**             |
|                                           |                          |
| **U.S. Department**                       |                          |
|                                           |                          |
| **of Transportation**                     |                          |
|                                           |                          |
| **Federal Aviation**                      |                          |
|                                           |                          |
| **Administration**                        |                          |
+-------------------------------------------+--------------------------+

+--------------------------------+-----------------+------------------+
| **Subject:** SPECIFICATION FOR | **Date:**       | **AC No:** AC    |
| AIRPORT LIGHT BASES,           | October 17,     | 150/5345-42F     |
| TRANSFORMER HOUSINGS, JUNCTION | 2006            |                  |
| BOXES, AND ACCESSORIES         |                 | **Change:**      |
|                                | **Initiated     |                  |
|                                | by:** AAS-100   |                  |
+--------------------------------+-----------------+------------------+

**1. PURPOSE.** This advisory circular (AC) contains the specifications
for containers designed to serve as airport light bases, transformer
housings, junction boxes, and accessories. This AC is not intended to be
a compilation of currently available product designs. This AC provides
the basic standard requirements for critical dimensions and performance
requirements to which all manufacturers must demonstrate compliance.

**2. EFFECTIVE DATE.** Effective October 17, 2006, only that equipment
qualified in accordance with this specification will be listed in AC
150/5345-53, *Airport Lighting Equipment Certification Program*.

a.  Manufacturers who, prior to the effective date of this AC, were
    certified manufacturers of Class I, Type L‑867 and Type L‑868 bases
    and extensions under AC 150/5345-42C may maintain their
    certification under this new AC for the Class IA providing they
    satisfactorily complete any additional qualification testing
    required as part of this AC.

b.  Manufacturers who, prior to the effective date of this AC, were
    certified manufacturers of Class II, Type L‑867 bases and extensions
    under AC 150/5345-42C may maintain their certification under this
    new AC for Class IIA providing they satisfactorily complete any
    additional qualification testing required as part of this AC.

c.  Manufacturers who, prior to the effective date of this AC, were
    certified manufacturers of metallic Class II, Type L-867 and Type
    L-868 bases and extensions under AC 150/5345-42C may maintain their
    certification under this new AC for Class IA providing they
    satisfactorily complete any additional qualification testing
    required as part of this AC.

d.  Manufacturers who were certified to manufacture 10 inch (254 mm)
    diameter Type L‑868 bases may maintain their 150/5345-42C
    certification listing for spacers and extensions under Class IA in
    this revised AC in order to service those airports with existing 10
    inch (254 mm) diameter taxiway centerline fixtures. These items must
    be fabricated and certified to the appropriate Class as defined in
    this AC. Appendix figure A-1 provides the design dimensional
    details. New base installations [should not have]{.underline} 10
    inch (254 mm) diameter L‑868 bases.

**3. CANCELLATION.** AC 150/5345-42E, *Specification for Airport Light
Bases, Transformer Housings, Junction Boxes, and Accessories*, dated May
8, 2006, is canceled.

**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 FROM 42E**:

a.  Figure 8, increase inner diameter of extension bottom flange from
    9.25 inches to 10 inches.

b.  Figure A-1, decrease outer diameter of spacer ring from 10.5 inches
    to 10 inches.

c.  Rescind torque testing of L-867s by deleting paragraphs 4.1.7 and
    4.2.8.

d.  Reduce required cycles for fatigue testing from 5 × 10^8^ to 5 ×
    10^7^.

**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.

**7. COMMENTS OR SUGGESTIONS** for improvements to this AC should be
sent to:

> Manager, Airport Engineering Division
>
> Federal Aviation Administration
>
> ATTN: AAS-100
>
> 800 Independence Avenue, S.W.
>
> Washington, DC 20591

**8. COPIES OF THIS AC.** The Office of Airport Safety and Standards is
in the process of making ACs available to the public through the
Internet. These ACs may be found through the FAA home page
(www.faa.gov). A printed copy of this AC and other ACs can be ordered
from the U.S. Department of Transportation, Subsequent Distribution
Office, Ardmore East Business Center, 3341 Q 75th Avenue, Landover, MD
20785.

![](media/image2.png){width="2.5541666666666667in"
height="0.5965277777777778in"}

DAVID L. BENNETT

Director of Airport Safety and Standards

TABLE OF CONTENTS

[SECTION 1. SCOPE 1](#section-1.-scope)

[1.1 Type. 1](#__RefHeading___Toc149024653)

[1.2 Class. 1](#__RefHeading___Toc149024654)

[1.3 Size. 2](#__RefHeading___Toc149024655)

[SECTION 2. APPLICABLE DOCUMENTS 3](#section-2.-applicable-documents)

[2.1 FAA Advisory Circulars. 3](#__RefHeading___Toc149024657)

[2.2 Military Standard and Specification.
3](#__RefHeading___Toc149024658)

[2.2.1 Military Standard. 3](#military-standard.)

[2.2.2 Military Specification. 3](#military-specification.)

[2.3 American Society for Testing and Materials (ASTM) Specifications,
Test Methods, Standard Practices, and Recommended Practices.
3](#__RefHeading___Toc149024661)

[2.4 American Society of Mechanical Engineers (ASME).
4](#__RefHeading___Toc149024662)

[2.5 American Society for Quality Control (ASQC).
4](#__RefHeading___Toc149024663)

[2.6 Miscellaneous Documents. 4](#miscellaneous-documents.)

[SECTION 3. REQUIREMENTS 5](#section-3.-requirements)

[3.1 General Description and Intended Use.
5](#general-description-and-intended-use.)

[3.1.1 Type L‑867 Bases. 5](#__RefHeading___Toc149024667)

[3.1.2 Type L‑868 Bases. 5](#__RefHeading___Toc149024668)

[3.1.3 General Accessories. 5](#__RefHeading___Toc149024669)

[3.2 Fabrication and Materials. 7](#__RefHeading___Toc149024670)

[3.2.1 Type L‑867, Class IA and Class IB Bases and Extensions.
7](#__RefHeading___Toc149024671)

[3.2.2 Type L‑867, Class IIA and Class IIB Bases and Extensions.
9](#__RefHeading___Toc149024672)

[3.2.3 Type L‑867 Accessories. 10](#__RefHeading___Toc149024673)

[3.2.4 Type L‑868, Class IA and Class IB Bases and Extensions.
10](#__RefHeading___Toc149024674)

[3.2.5 Type L‑868 Accessories. 12](#__RefHeading___Toc149024675)

[3.2.6 Grounding Lugs. 12](#__RefHeading___Toc149024676)

[3.2.7 Drains. 12](#__RefHeading___Toc149024677)

[3.2.8 Protective Coating. 12](#__RefHeading___Toc149024678)

[SECTION 4. QUALITY ASSURANCE PROVISIONS
13](#section-4.-quality-assurance-provisions)

[4.1 Type L‑867, Class IA and Class IB Certification Testing.
13](#__RefHeading___Toc149024680)

[4.1.1 Type L‑867, Class IA and Class IB Load Test.
13](#__RefHeading___Toc149024681)

[4.1.2 Type L‑867, Class IA and Class IB Weld Integrity Test.
14](#__RefHeading___Toc149024682)

[4.1.3 Type L‑867, Class IA and Class IB Dimensional Tests.
14](#__RefHeading___Toc149024683)

[4.1.4 Type L‑867, Class IA and Class IB Protective Coating Thickness
Test. 14](#__RefHeading___Toc149024684)

[4.1.5 Type L‑867, Class IA and Class IB Visual Inspection.
14](#__RefHeading___Toc149024685)

[4.1.6 Type L‑867, Class IB Potassium Acetate Test.
14](#__RefHeading___Toc149024686)

[4.2 Type L‑867, Class IIA and Class IIB Certification Testing.
14](#__RefHeading___Toc149024687)

[4.2.1 Type L‑867, Class IIA and Class IIB Load Test.
14](#__RefHeading___Toc149024688)

[4.2.2 Type L‑867, Class IIA and Class IIB Weld Integrity Test.
15](#__RefHeading___Toc149024689)

[4.2.3 Type L‑867, Class IIA and Class IIB Temperature Shock Test.
15](#__RefHeading___Toc149024690)

[4.2.4 Type L‑867, Class IIA and Class IIB Dimensional Tests.
15](#__RefHeading___Toc149024691)

[4.2.5 Type L‑867, Class IIA and Class IIB Protective Coating Thickness
Test. 15](#__RefHeading___Toc149024692)

[4.2.6 Type L‑867, Class IIA and Class IIB Visual Inspection.
15](#__RefHeading___Toc149024693)

[4.2.7 Type L‑867, Class IIB Potassium Acetate Test.
15](#__RefHeading___Toc149024694)

[4.3 Type L‑868, Class IA and Class IB Certification Testing.
15](#__RefHeading___Toc149024695)

[4.3.1 Type L‑868, Class IA and Class IB Load Test.
15](#__RefHeading___Toc149024696)

[4.3.2 Type L‑868, Class IA and Class IB Fatigue Test.
15](#__RefHeading___Toc149024697)

[4.3.3 Type L‑868, Class IA and Class IB Impact Test.
16](#__RefHeading___Toc149024698)

[4.3.4 Type L‑868, Class IA and Class IB Flange Bolt Torque Test.
16](#__RefHeading___Toc149024699)

[4.3.5 Type L‑868, Class IA and Class IB Weld Integrity Test.
16](#__RefHeading___Toc149024700)

[4.3.6 Type L‑868, Class IA and Class IB Dimensional Tests.
16](#__RefHeading___Toc149024701)

[4.3.7 Type L‑868, Class IA and Class IB Protective Coating Thickness
Test. 16](#__RefHeading___Toc149024702)

[4.3.8 Type L‑868, Class IA and Class IB Visual Inspection.
16](#__RefHeading___Toc149024703)

[4.3.9 Type L‑868, Class IB Potassium Acetate Test.
16](#__RefHeading___Toc149024704)

[4.3.10 Type L-868, Class IA and Class IB Torque Test for Adjustable
Height Bases and Extensions. 16](#__RefHeading___Toc149024705)

[4.4 Production Testing 17](#production-testing)

[4.4.1 Lot Size. 17](#__RefHeading___Toc149024707)

[4.4.2 Sample Size and Acceptance Criteria.
17](#__RefHeading___Toc149024708)

[4.4.3 Retesting. 17](#__RefHeading___Toc149024709)

[4.4.4 Type L‑867, Class IA and Class IB.
17](#type-l867-class-ia-and-class-ib.)

[4.4.5 Type L‑867, Class IIA and Class IIB.
17](#type-l867-class-iia-and-class-iib.)

[4.4.6 Type L‑868, Class IA and Class IB.
17](#type-l868-class-ia-and-class-ib.)

[SECTION 5. PREPARATION FOR DELIVERY.
19](#section-5.-preparation-for-delivery.)

[5.1 Packing 19](#__RefHeading___Toc149024714)

[5.2 Marking 19](#__RefHeading___Toc149024715)

LIST OF FIGURES

Figure 1. Flange, Type L-867, Class IA, Class IB, Class IIA, Class IIB
[21](#__RefHeading___Toc145243849)

Figure 2. Body, Type L-867, Class IA, Class IB, Class IIA, Class IIB
[22](#__RefHeading___Toc145243850)

Figure 3. Extensions, Type L-867, Class IA, Class IB, Class IIA, Class
IIB [23](#__RefHeading___Toc145243851)

Figure 4. Accessories, Type L-867 [24](#__RefHeading___Toc145243852)

Figure 5. Flange, Type L-868, Class IA, Class IB
[25](#__RefHeading___Toc145243853)

Figure 6. Body, Type L-868, Class IA, Class IB
[26](#__RefHeading___Toc145243854)

Figure 7. Sectional Body, Type L-868, Class IA, Class IB
[27](#__RefHeading___Toc145243855)

Figure 8. Extensions, Type L-868 Class IA, Class IB
[28](#__RefHeading___Toc145243856)

Figure 9. Accessories, Type L-868 [29](#__RefHeading___Toc145243857)

Figure A-1. Extensions and spacers for 10-inch (254 mm) Diameter Type
L-868 base, for Maintenance of Existing Installations Only A-1

# SECTION 1. SCOPE {#section-1.-scope .Style-Heading-1-+-Centered-Before:--0-pt-After:--12-pt .unnumbered}

This specification sets forth the requirements for light bases,
transformer housings, junction boxes, and related accessories. This
specification covers several types, classes, and sizes of bases.

[]{#__RefHeading___Toc149024653 .anchor}**1.1 Type.** The type
designation of the bases and extensions distinguishes their application
as follows:

Type L‑867 Bases and extensions for applications subject to occasional
light vehicular loading but no aircraft or other heavy vehicular
loading.

> Type L‑868 Bases and extensions for applications subject to aircraft
> and other heavy vehicular loading.

[]{#__RefHeading___Toc149024654 .anchor}**1.2 Class.** The class
designation applies as follows:

Class IA Bases and extensions that are fabricated from metal in exact
conformance to the critical dimensions and requirements necessary for
standardization between parts specified herein.

Class IB Bases and extensions that are fabricated from metal in exact
conformance to the critical dimensions and requirements necessary for
standardization between parts specified herein and which have been
subjected to corrosion testing and found resistant to deicing fluids
containing potassium acetate.

Class IIA Bases and extensions that are fabricated from non-metallic
materials in exact conformance to the critical dimensions and
requirements necessary for standardization between parts specified
herein.

Class IIB Bases and extensions that are fabricated from non-metallic
materials in exact conformance to the critical dimensions and
requirements necessary for standardization between parts specified
herein and which have been subjected to corrosion testing and found
resistant to deicing fluids containing potassium acetate.

Note 1 Bases and extensions that meet the Class IB or Class IIB
requirements are also considered to meet Class IA or Class IIA
requirements, respectively.

Note 2 Bases and extensions that are fabricated as either Class IA or
Class IB are to perform the same exact function. The only difference
between the two classes of bases and extensions is the possible
difference in metal or metal surface treatment required to meet the
Class IB level of testing.

Note 3 Bases and extensions that are fabricated as either Class IIA or
Class IIB are to perform the same exact function. The only difference
between the two bases and extensions is the possible difference in
material or material surface treatment required to meet the Class IIB
level of testing.

[]{#__RefHeading___Toc149024655 .anchor}**1.3 Size.** Five base size
designations are assigned. The size refers to the nominal diameter of
the base. Sizes and applicable types are as follow:

> **Size Type**
>
> Size A - 8 inch (203 mm) Type L‑868
>
> Size B - 12 inch (305 mm) Type L‑867 and Type L‑868
>
> Size C - 15 inch (381 mm) Type L‑868
>
> Size D - 16 inch (406 mm) Type L‑867
>
> Size E - 24 inch (610 mm) Type L‑867

# SECTION 2. APPLICABLE DOCUMENTS {#section-2.-applicable-documents .Style-Heading-1-+-Centered-Before:--0-pt-After:--12-pt .unnumbered}

The following documents are referenced or complement the information
presented in this AC:

[]{#__RefHeading___Toc149024657 .anchor}**2.1 FAA Advisory Circulars.**
The FAA AC listed below contains information pertinent to this
specification. Copies of the current edition of the AC may be obtained
at no charge from the following FAA website:

> http://www.faa.gov/
>
> AC 150/5340-30 *Design and Installation Details for Airport Visual
> Aids*

[]{#__RefHeading___Toc149024658 .anchor}**2.2 Military Standard and
Specification.** The following Military Standard and Specification (in
effect on the date of application for qualification) form a part of this
specification and are applicable to the extent specified herein. Copies
of military standards and specifications may be obtained at no charge
from: DoDSSP, Building 4, Section D, 700 Robbins Ave, Philadelphia, PA
19111-5098, or from the following website:

> http://dodssp.daps.mil/

### **2.2.1 Military Standard**.

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

### **2.2.2 Military Specification**.

> MIL-PRF-26915 *Primer Coating, for Steel Surfaces*

[]{#__RefHeading___Toc149024661 .anchor}**2.3 American Society for
Testing and Materials (ASTM) Specifications, Test Methods, Standard
Practices, and Recommended Practices.** The following specifications,
test methods, standard practices, and recommended practices (in effect
on the date of application for qualification) form a part of this
specification and are applicable to the extent specified herein. Copies
of ASTM specifications, test methods, and recommended practices may be
obtained from the American Society for Testing and Materials, or from
the website:

> [http://www.astm.org](http://www.astm.org/)/
>
> A 36 *Standard Specification for Carbon Structural Steel*
>
> A 123/A 123M-02 *Standard Specification for Zinc (Hot-Dip Galvanized)
> Coatings on Iron and Steel Products*
>
> A 153 *Standard Specification for Zinc Coating (Hot-Dip) on Iron and
> Steel Hardware*
>
> A 385-03 *Standard Practice for Providing High-Quality Zinc Coatings
> (Hot-Dip)*
>
> B 633 *Standard Specification for Electrodeposited Coatings of Zinc on
> Iron and Steel*
>
> C 109 *Test Method for Compressive Strength of Hydraulic Cement
> Mortars*
>
> C 617 *Standard Practice for Capping Cylindrical Concrete Specimens*
>
> C 827 *Early Volume Change of Cementitious Mixtures*
>
> D 2240 *Standard Test Method for Rubber Property-Durometer Hardness*
>
> E 23 *Standard Test Methods for Notched Bar Impact Testing of Metallic
> Materials*

[]{#__RefHeading___Toc149024662 .anchor}**2.4 American Society of
Mechanical Engineers (ASME).** The following standard (in effect on the
date of application for qualification) forms a part of this
specification and is applicable to the extent specified herein. Copies
of ASME standards may be obtained from the American Society of
Mechanical Engineers, or from the website:

> [[http://www.asme.org](http://www.asme.org/)/]{.underline}
>
> B46.1 *Surface Texture, Surface Roughness, Waviness and Lay*

[]{#__RefHeading___Toc149024663 .anchor}**2.5 American Society for
Quality Control (ASQC).** The following standard (in effect on the date
of application for qualification) forms a part of this specification and
is applicable to the extent specified herein. Copies of ASQC standards
may be obtained from the American Society for Quality Control, or from
the website:

> [http://www.asqc.org/]{.underline}
>
> Z1.4 *Sampling Procedures and Tables for Inspection by Attributes*

## 2.6 Miscellaneous Documents.

[The Design, Installation and Maintenance of In-Pavement Airport
Lighting]{.underline} by Arthur S. Schai, F.I.E.S. Library of Congress
Catalog Card Number 86-81865. This document does not form a part of this
specification but is listed as valuable resource material on the design
and installation of light bases. (Reference AC 150/5340-30 for
installation details and options.)

# SECTION 3. REQUIREMENTS {#section-3.-requirements .Style-Heading-1-+-Centered-Before:--0-pt-After:--12-pt .unnumbered}

## 3.1 General Description and Intended Use.

[]{#__RefHeading___Toc149024667 .anchor}**3.1.1 Type L‑867 Bases.** Type
L‑867 is used as a mounting base for airport lights, as a transformer
housing and as an electrical junction box. The Type L‑867 base must be
designed to withstand occasional light vehicular loads. It is subject to
direct earth burial with and without concrete backfill.

[]{#__RefHeading___Toc149024668 .anchor}**3.1.2 Type L‑868 Bases.** Type
L‑868 is used as a mounting base for in-pavement airport lights, as
housing for series circuit transformers, and as an electrical junction
box. It must be designed to withstand aircraft and other heavy vehicular
loadings. The design must allow the installation of any in-pavement
fixture. 

The Type L‑868 top flange and base must be designed to meet the
dimensional requirements and performance requirements, as detailed in
this document, in order to assure proper mating between base and
in-pavement lighting fixture.

[]{#__RefHeading___Toc149024669 .anchor}**3.1.3 General Accessories.**
Accessories are used to make corrections, and adjustments to Type L‑867
and Type L‑868 bases, and to facilitate proper performance of the
lighting fixture which the base supports. Examples of accessories are
listed below, and when used in conjunction with a base specified in this
AC, must not reduce the performance capabilities of that base.

**3.1.3.1 Spacer Rings.** Spacer rings are available in various designs
depending on the application and are available in various thicknesses
and diameters and are generally installed between the base flange and
the light fixture or other accessory. See Figures 3 and 8 for minimum
and maximum height. In order to preserve the base integrity and proper
bolt torque, a maximum of three spacer rings may be stacked together.
Each type of L‑868 spacer ring, when interfaced to the fixture housing,
may be provided with a protective dam that encircles the spacer ring.
The protective dam is ⅛ inch shorter than the fixture housing it
protects and has an inner diameter (ID) that is a maximum 1/4 inch
greater than the outer diameter (OD) of the fixture housing. The OD of
the protective dam must not exceed the OD of the base flange ring. The
various types of spacer rings are noted in paragraphs 3.1.3.1.1 through
3.1.3.1.4.

**NOTE 1:** *The protective dam prevents grout, sealant, or other
pavement material from sealing the fixture in place and preventing easy
maintenance access to the fixture or base.*

**NOTE 2:**   *On field adjustable bases and extensions, the protective
dam may be integral to the base or extension top flange ring as long as
the requirements noted above and the base or extension top flange ring
dimensions comply with the dimensional requirements of this AC.*

**3.1.3.1.1 Flat Spacer Ring.** A flat spacer ring is used to provide
height adjustment for Type L‑867 or Type L‑868 bases.

**3.1.3.1.2 Grooved Spacer Ring.** A grooved spacer ring, when used with
a provided "O" ring gasket, is used to provide a seal between the
in-pavement fixture and spacer ring for the purpose of minimizing the
entrance of surface water and other liquids into the Type L-868 base.

**3.1.3.1.3 Tapered Spacer Ring.** Tapered spacer rings are used to
provide level and/or height correction for out-of-level Type L‑868 and
L-867 bases.

**3.1.3.1.4 Azimuth Correction Spacer Ring.** Azimuth correction spacer
rings are used to correct the alignment of light fixtures attached to
misaligned Type L-868 bases.

**3.1.3.2 Conduit Connections.** Conduit connections permit connection
of underground conduit to the bases. Conduit connections (number, type,
size, and location) are to be provided as specified and must meet the
environmental requirements of the Class base with which they are
utilized. Conduit connections may include hubs, grommets, or other
devices suited for the application.

**3.1.3.3 Adapter Rings**. Adapter rings are used for converting the
bolt circle of an existing base to that of a fixture having a different
bolt circle or to that of a threaded adaptor ring for adjustable
threaded extensions. No modification of the existing base should be
required. All fixture mounting bolts must have at least ½ inches (13 mm)
of thread engagement into the ring.

**3.1.3.4 Base Extensions, Fixed and Adjustable.** Base extensions are
used to provide height adjustments to both Type L‑867 and Type L‑868
bases. They are used with bases when the required new elevation exceeds
the capability of spacer rings to obtain it.

Base extension capability can be provided by installing either a fixed
extension or a field adjustable extension that conforms to the top
flange of an existing type base and that has the same dimensional top
flange and fixture clearance as the existing base. Care should be taken
to ensure that the proper Class of extension is utilized. Extensions are
equal to or greater than 1‑3/4 inches (44 mm) for Type L‑867 and 2
inches (51 mm) for Type L‑868. Extensions and spacers will be
dimensioned as shown in Figures 3 and 8. Note that fixed extensions are
shown for dimensional purposes only. Various methods of providing
adjustable heights are possible (including proprietary stainless steel
adjustable threaded extensions), but all must meet the applicable
dimensions of these figures.

Type L‑867 bases with provisions for height adjustment may be specified
to meet local conditions. These base extensions, which rely on the top
flange and the embedment material to support the load, are not suitable
for direct earth burial. If the adjustable height base is intended to
support the load without top flange and embedment assistance, it is
suitable for direct earth burial and must be capable of withstanding the
full load test requirement at its maximum extension.

All bases that utilize a method of height adjustment that is integral to
the base or extension and is intended for field adjustment must, during
qualification testing, be subjected to a torque test to ensure there
will be no top flange rotation under normal operating conditions.
Reference paragraphs 4.1.7, 4.2.8, and 4.3.10.

**3.1.3.5 Covers.** Various covers are available to facilitate the
proper installation of bases. All covers must utilize manufacturer
furnished fully threaded 18-8 stainless steel, hex head 3/8″ (10 mm)
bolts long enough to provide full thread engagement into the mounting
surface.

**3.1.3.5.1 Blank Covers.** Blank covers are used to provide a cover for
bases when no light fitting is to be installed. They must be metallic
and meet the applicable dimensional requirements of the type base to
which they are attached. For Type L‑868 load bearing bases, the cover
must be equal in thickness to the light fixture. For Type L‑867B and
Type L‑867D non-load bearing bases, the cover must be a minimum of 3/8
inches (10 mm). For Type L‑867E bases, the cover must be a minimum of ½
inch (13 mm). Covers thicker than ¾ inch (19 mm) must have (2) opposite
holes of the (6) 7/16 inch (11 mm) through holes tapped ½\"-13 as a
means to affix a lifting eye for ease of removal. All cover plates ½
inch (13 mm) or thicker must have all bolt holes counter-bored 1-1/8
inches × 3/8 inches (29 mm × 10 mm) deep.

**3.1.3.5.2 Mud Covers.** Mud covers may stand alone or may be used in
conjunction with plywood covers on Type L‑867 and Type L‑868 bases to
protect the base flange during construction, and to include surface
marking to facilitate locating the center of the base when coring out to
locate the base after pavement overlay. Mud covers are appropriately
sized for the specific bases they are to protect.

**3.1.3.5.3 Shipping Covers.** Plywood covers are used to protect bases
during shipping and installation and are to be installed on all base or
base extension shipments. For all galvanized bases, a 3 mil poly
shipping gasket may be installed between the base and plywood cover or,
as an alternative, the plywood cover should be waxed on the bottom
surface to eliminate the bonding action of the plywood and zinc. The
Type L‑868 plywood cover should also be waxed on the OD edge to
facilitate easy removal from any surrounding embedment material. Plywood
should be exterior grade ½ inch (13 mm) thick bb/cc or other material of
equal strength and weather resistance (reference figure 9) for Type
L‑867 and equal to the thickness of the light fixture \[3/4 inch (19 mm)
or 1-3/4 inch (44.5 mm)\] to be installed on the Type L-868 base. When
shipped with a mud cover on top, the total thickness of mud cover and
plywood cover must equal the thickness of the light fixture.

**NOTE:** *The thickness of the fixture is determined to be the height
of fixture flange at the OD of the fixture.*

**3.1.3.6 Grounding Lugs.** For the purpose of enhancing safety, each
base must have installed, by the manufacturer, an internal and external
ground strap that is available for the purpose of attaching a ground lug
that is connected to an earth ground or a safety ground conductor
installed in the series circuit conduit. For Class I bases, a metallic
ground connector or strap must be welded to the interior and exterior
wall of each base before applying surface protection. The details and
location of the ground connectors are shown in Figures 2 and 6. The
location of the connector may be varied to meet specific conditions. A
bronze or copper ground connector should not be fastened to the ground
connector or strap until after the base surface protection is applied.
For Class II bases, the ground connector or strap must provide a
positive ground connection path to a light fixture mounting bolt.

**3.1.3.7 Drains**. The conduit/base system, which protects the series
circuit cable, should have drains installed in the bases at low points
in the system to provide for drainage of water and deicing fluids away
from the base and conduit system, which if allowed to pool for long
periods of time, will hasten corrosion of the conduit/base system.

[]{#__RefHeading___Toc149024670 .anchor}**3.2 Fabrication and
Materials.** Bases and related accessories, designed to function as
light bases, transformer housings, and junction boxes, must be
fabricated of suitable material to meet the following standards.
Appropriate separation material must be used between dissimilar metals
to prevent galvanic action between flange rings, spacer rings etc.
 Copper ground components and stainless steel bolts are exempted. This
separation material must not deform at 450 psi (a load equivalent to the
L-868 load test) to prevent compression and subsequent loosening of
bolts.

[]{#__RefHeading___Toc149024671 .anchor}**3.2.1 Type L‑867, Class IA and
Class IB Bases and Extensions.** Type L‑867 Class IA bases and
extensions must be fabricated from an appropriate metal using
fabrication techniques that will produce units meeting the appropriate
testing requirements of paragraph 4.1. Class IB bases must be fabricated
from metal using fabrication techniques that will produce units meeting
the appropriate testing requirements of paragraph 4.1. All bases and
extensions (excluding spacers and covers) must be labeled using a
suitable long lasting contrasting color ink stamp with either the letter
A or B to indicate the Class suffix under which the certification has
been obtained. The stamp must be a minimum of one inch (25 mm) in height
and placed on the exterior wall of the base, no more than 6 inches (152
mm) below the base flange. All components described in this paragraph
must be manufactured such that their use does not require existing
bases, extensions or any existing components installed in the ground to
be cut or modified in any manner.  The modification of standard,
certified components renders them non-standard and voids their
certification. The only exception to this is the cutting of additional
conduit holes during installation and the installation of threaded
inserts in the flange as these do not affect the structural integrity of
a standard unit.

**3.2.1.1 Flange.** The dimensions of the flange must be as shown in
Figure 1. The flat surface of the flange must be installed at an angle
of 90 ±0.25 degrees to the axis of the cylindrical body. The flange must
be continuously attached to the body to provide a watertight seal.

**3.2.1.2 Body.** The body, including the sides and bottom, must be
fabricated from one or more pieces. The standard dimensions of the body
must be as shown in Figure 2. Two conduit entrances must be provided and
installed near the bottom of the base. The location and size, as shown
in Figure 2, is considered standard. However, the location, number,
type, and size can be altered to meet project requirements. Any sharp
edges formed on the inside of the body must be removed to prevent
cutting or chafing of the cable insulation. The length of the body
section as shown in Figure 2 is considered standard, but the length may
be varied to meet special conditions.

**3.2.1.3 Extensions.** The dimensions of the extensions and spacer
rings must be as shown in Figure 3. Extensions for Type L‑867 bases must
be ordered to length with a minimum length of 1-3/4 inches (44.5 mm) and
a tolerance of ±l/16 inch (1.5 mm). Flat spacer rings are utilized for
height adjustments from l/16 inch (1.5 mm) through l‑11/16 inches (42.86
mm) in l/16 inch (1.5 mm) increments. In order to preserve the base
integrity, a maximum of three spacer rings may be stacked together.

**3.2.1.4 Adjustable Height Type L‑867, Class IA and Class IB Bases and
Extensions.** Adjustable height Type L‑867, Class IA and IB bases and
extensions must have a provision inherent to their design for adjusting
the height of the top flange. Various methods of providing height
adjustment are possible (including proprietary stainless steel
adjustable threaded extensions). The top flange must have the identical
dimensions as the top flange of the standard base. For adjustable bases,
the body must also have the identical dimensions as the standard base.
For adjustable extensions, the top flange and body of the extension must
also be compatible with lighting fixtures and with existing parts in the
ground without field modifications to certified parts. The adjustable
top flange and supporting wall may mate into the base body either
externally or internally of the base supporting wall. If the adjustable
base is designed for installation in earth (no embedment support
required), the base must be load tested fully extended in free space. If
the base requires portland cement concrete (PCC) embedment in order to
meet the loading requirements, it may be tested with supporting PCC
embedment to simulate actual installation as directed by the testing
laboratory. The manufacturer must indicate by the suffix "PCC" to the
catalog number that the base does not meet the load requirements of Type
L‑867, unless the top base flange is embedded and supported by PCC.
These bases must be dimensioned as shown in Figure 2 with regard to
fixture interface and critical dimensions.

**3.2.1.5 Bolts.** Bolts suitable for use in threaded holes, as shown in
Figures 1 and 2, must be supplied with each base and extension assembly.
The bolts must conform to the dimensions specified in the notes in
Figures 1, 2, and 3 and must be fully threaded and fabricated from 18-8
stainless steel.

[]{#__RefHeading___Toc149024672 .anchor}**3.2.2 Type L‑867, Class IIA
and Class IIB Bases and Extensions.** Type L‑867 bases and extensions,
Class IIA and IIB, must be fabricated from suitable materials and
dimensioned so as to produce units meeting the appropriate testing
requirements of paragraph 4.2. All bases and extensions (excluding
spacers and covers) must be labeled using a suitable long lasting
contrasting color ink stamp with either the letter A or B to indicate
the Class suffix under which the certification has been obtained. The
stamp must be a minimum of one inch (25 mm) in height and placed on the
exterior wall of the base, no more than 6 inches (152 mm) below the base
flange. All components described in this paragraph must be manufactured
such that their use does not require existing cans, extensions, or any
existing components installed in the ground to be cut or modified in any
manner.  The modification of standard certified components renders them
non-standard and voids their certification. The only exception to this
is the cutting of additional conduit holes during installation and the
installation of threaded inserts in the flange as these do not affect
the structural integrity of a standard unit.

**3.2.2.1 Flange.** The flange must be fabricated from suitable
materials and must meet the same critical lighting fixture interface
dimensions specified for Class I in Figure 1. Flange thickness and
material should be sufficient to pass the load test specified in
paragraph 4.1.1. The flange must be continuously attached to the body to
provide a watertight seal.

**3.2.2.2 Body.** The body, sides, and bottom may be fabricated from one
or more pieces. The sides and bottom must be fabricated from suitable
materials sufficient to pass the load test described in paragraph 4.2.1.
Two conduit entrances must be installed near the bottom of the base. The
location and size, as shown in Figure 2, must be considered standard.
However, the location, number, type, and size may be altered to meet
project requirements. Any sharp edges formed on the inside of the body
must be removed to prevent cutting or chafing of the cable insulation.
The length of the body section as shown in Figure 2 must be considered
standard, but the length may be varied to meet special conditions.

**3.2.2.3 Extensions.** The dimensions of the extensions and spacer
rings must be as shown in Figure 3. Extensions must be fabricated of the
same materials and dimensions specified in paragraphs 3.2.2.1 and
3.2.2.2. Extensions must be ordered to length with a minimum length of
l-3/4 inches (44.5 mm) and a tolerance of ±l/16 inch (1.5 mm). Flat
spacer rings are utilized for height adjustments from l/16 inch (1.5 mm)
through l-11/16 inches (42.86 mm) in l/16 inch (1.5 mm) increments. In
order to preserve the base integrity, a maximum of three spacer rings
may be stacked together.

**3.2.2.4 Adjustable Height Type L‑867, Class IIA and Class IIB Bases
and Extensions.** Adjustable height Type L‑867, Class IIA and IIB bases
and extensions must have a provision inherent to their design for
adjusting the height of the top flange. Various methods of providing
height adjustment are possible (including proprietary stainless steel
adjustable threaded extensions). The top flange must have the identical
dimensions as the top flange of the standard base. The top flange must
have the identical dimensions as the top flange of the standard base.
For adjustable bases the body must also have the identical dimensions as
the standard base. For adjustable extensions the top flange and body of
the extension must also be compatible with lighting fixtures and with
existing parts in the ground without field modifications to certified
parts. The adjustable top flange and supporting wall may mate into the
base body either externally or internally of the base supporting wall.
If the adjustable base is designed for installation in earth (no
embedment support required) the base must be load tested fully extended
in free space. If the base requires PCC embedment in order to meet the
loading requirements, it may be tested with supporting PCC embedment to
simulate actual installation as directed by the testing laboratory. The
manufacturer must indicate by the suffix "PCC" to the catalog number
that the base does not meet the load requirements of Type L‑867 unless
the top base flange is embedded and supported by PCC. These bases must
be dimensioned as shown in Figure 2 with regard to fixture interface and
critical dimensions.

**3.2.2.5 Bolts.** Bolts suitable for use in threaded holes as shown in
Figures 1, 2, and 3 must be supplied with each base and extension
assembly. The bolts must conform to the dimensions specified in the
notes in Figures 1, 2, and 3, and must be fully threaded and fabricated
from 18-8 stainless steel.

[]{#__RefHeading___Toc149024673 .anchor}**3.2.3 Type L‑867
Accessories.** Various accessories are necessary to facilitate
construction involving Type L‑867 bases or to make corrections or
adjustments to Type L‑867 bases. These accessories are detailed in
Figure 4.

[]{#__RefHeading___Toc149024674 .anchor}**3.2.4 Type L‑868, Class IA and
Class IB Bases and Extensions.** Type L‑868, Class IA bases and
extensions, must be fabricated from an appropriate metal\* and
constructed in such a manner as to meet the appropriate testing
requirements given in paragraph 4.3. Class IB bases and extensions must
be fabricated from an appropriate metal\* and constructed in such a
manner as to meet the appropriate testing requirements specified in
paragraph 4.3.

\**If a material other than ASTM A36 steel is used for a major load
bearing structural component, the material must meet the mechanical
property yield and tensile values of A36 steel. A material with yield
and tensile stress values lower than the minimum specified values of A36
steel may be used if the manufacturer can demonstrate conformance to the
requirements set forth in section 4 of this specification.*

All bases and extensions (excluding spacers and covers) must be labeled
using a suitable long lasting contrasting color ink stamp with either
the letter A or B to indicate the Class suffix under which the
certification has been obtained. The stamp must be a minimum 1 inch (25
mm) in height and placed on the exterior wall of the base, no more than
6 inches (152 mm) below the base flange.

All components described in this paragraph must be manufactured such
that their use does not require existing cans, extensions or any
existing components installed in the ground to be cut or modified in any
manner.  The modification of standard, certified components renders them
non-standard and voids their certification. The only exception to this
is the cutting of additional conduit holes during installation and the
installation of threaded inserts in the flange as these do not affect
the structural integrity of a standard unit.

**3.2.4.1 Flange.** The dimensions of the flange must be as shown in
Figure 5. The flat surface of the flange must be installed at an angle
of 90 degrees, ±0.125 degree, to the axis of the cylindrical body of the
base. The flange must be continuously attached to the body to provide a
watertight seal. The flange faces, outside and inside diameter, must be
finished in accordance with ASME B 46.1. Bolt hole size and placement
must be as shown in Figure 5. Bolt hole may be integral to the flange or
contained in metal insert located in the flange. A specified bolt
installed in the flange bolt hole must be capable of accepting a bolt
torque test as indicated in paragraph 4.3.4. As part of the base
testing, any insert or remedial device used for correcting threads
damaged while in service must be tested in the base flange as part of
the base in which it is intended for service.

**3.2.4.2 Body**. The body section, sides and bottom, may be formed from
one or more pieces. One piece body sections must have an anchor ring
(mid-ring) attached to the body by a continuous weld applied to the
upper side and lower side of the ring as shown in Figure 6. The length
of the one piece body section shown in Figure 6 must be considered a
standard, but the overall length may vary to meet specific conditions.
Two 2-inch (51 mm) conduit entrances must be provided near the bottom of
the body. The location, number, and size of conduit entrances shown in
Figure 6 must be considered standard, but the size, location, and number
of connections may be varied to meet specific conditions. Any sharp
edges at the conduit entrances must be removed to prevent cutting or
chafing of the cable insulation. When sectional bases are specified, the
sections must be dimensioned as shown in Figure 7.

**3.2.4.3 Extensions.** Extensions must be fabricated from the
appropriate metal for either Class IA or Class IB bases. The dimensions
of extensions must be as shown in Figure 8. The minimum extension length
must be 2 inches (51 mm) flat spacer rings must be used for height
corrections of l/16 inch (1.6 mm) to l-15/16 inches (49 mm) in l/l6 inch
(1.6 mm) increments. Flat spacer ring dimensions are shown in Figure 8.
If specified, grooved spacer rings may be used for height corrections of
l/4 inch (3.2 mm) to l-15/16 inches (49 mm) in l/16 inch (1.6 mm)
increments.

**3.2.4.4 Adjustable Height Type L‑868, Class IA and Class IB Bases and
Extensions.** Adjustable height Type L‑868, Class IA and IB bases and
extensions must have a provision inherent to their design for adjusting
the height of the top flange. Various methods of providing height
adjustment are possible (including proprietary stainless steel
adjustable threaded extensions). The top flange must have the identical
dimensions as the top flange of the standard base. For adjustable bases
the body must also have the identical dimensions as the standard base.
For adjustable extensions the top flange and body of the extension must
also be compatible with lighting fixtures and with existing parts in the
ground without field modifications to certified parts. The adjustable
top flange and supporting wall may mate into the base body either
externally or internally of the base supporting wall.

**3.2.4.5 Bolts.** Bolts suitable for use in the threaded holes as shown
in Figures 5, 6, and 7 must be supplied with each spacer ring. These
bolts must be of sufficient length to provide a full thread connection
with the base flange when the spacer ring is inserted between the light
fixture and the base flange. If bases or extensions are ordered without
spacer rings, bolts conforming to the dimensions specified in the notes
in Figures 5, 6, and 7 must be supplied. All bolts must be fully
threaded and fabricated from 18-8 stainless steel and supplied with
stainless steel locking washers.

**NOTE:** *Anti-seize material is recommended to be furnished and
utilized by the installing contractor when installing bolts (Reference
AC 150/5340-30). Anti-seize material is normally not supplied by the
base manufacturer due to the various airport preferences for different
brands of material.*

[]{#__RefHeading___Toc149024675 .anchor}**3.2.5 Type L‑868
Accessories.** Various accessories are necessary to facilitate
construction involving Type L‑868 bases or make corrections or
adjustments to Type L‑868 bases. These accessories are detailed in
Figure 9.

[]{#__RefHeading___Toc149024676 .anchor}**3.2.6 Grounding Lugs.** Ground
connectors or straps must be supplied with each base. A metallic ground
connector or strap must be welded to the interior and exterior wall of
each base before applying surface protection. The details and location
of the ground connectors are shown in Figure 6. The location of the
connector may be varied to meet specific conditions. A bronze or copper
ground connector should not be fastened to the ground connector or strap
until after the base surface protection is applied.

[]{#__RefHeading___Toc149024677 .anchor}**3.2.7 Drains.** If specified,
a drain should be provided in the bottom of the base prior to applying
surface protection. When not otherwise specified, the drain should be
3/4 inch (19 mm) in diameter.

[]{#__RefHeading___Toc149024678 .anchor}**3.2.8 Protective Coating.**
After fabrication, burrs and sharp edges must be removed, and all
ferrous metal parts must be treated for corrosion protection. Prior to
tapping operations, all parts of Class I bases, extensions, and spacer
rings in excess of l/4 inch (6.35 mm) in thickness must be hot-dip
galvanized, as specified in ASTM A123/A123M-02 , and applied in
accordance with ASTM A 385-03 . Flanges, covers, and rings must be wiped
smooth to a flatness of ±0.010 inch (0.254 mm). Plates and rings l/4
inch (6.35 mm) or less in thickness, grooved extensions, and grooved
spacer rings when made of ferrous metal must be plated with zinc in
accordance with the requirements of ASTM B 633, Type II, Class I or hot
dip galvanized in accordance with ASTM A123/A123M-02. Tapped holes for
conduit must be protected with a polyurethane varnish or equivalent. A
zinc dust primer meeting MIL-PRF-26915 must be permitted for touchup.
The area covered by zinc dust primer must not exceed 10 percent of the
total treated area. Any cast iron may be coated with a minimum of 2.0
mils of oxyplast powder in lieu of galvanizing. Class IA base extensions
and spacer rings must utilize surface protection, as required, meeting
the appropriate testing requirements stated in paragraph 4.4.

# SECTION 4. QUALITY ASSURANCE PROVISIONS {#section-4.-quality-assurance-provisions .Style-Heading-1-+-Centered-Before:--0-pt-After:--12-pt .unnumbered}

Equipment produced under this specification may be eligible for funding
for installation on airports under Federal grant assistance programs for
airports. In order to be eligible for installation under Federal grant
assistance programs, manufacturers of the types of equipment specified
herein are required to certify or furnish proof to the airport sponsor,
or the sponsor's representative, that the equipment is certified by an
FAA-approved Third Party Certification Body to meet the following test
specimen, and production provisions established in paragraphs 4.1, 4.2
and 4.3 Certification Testing. Certification testing is intended to
assure that the materials and fabrication methods are adequate to
provide acceptable in-service performance of bases. Certification
testing is required for each type, class, and size of base produced. The
third party certification body must make a permanent record (for up to
seven years beyond the life of the certification) of the exact material
and fabrication process used for the prototype submitted for
certification. Any change in material or fabrication process requires
the certification of the resultant product as a new product being
submitted for certification. After testing and qualification are
complete, the prototype accepted for qualification must serve as the
dimensional and workmanship model for all subsequent production units.

[]{#__RefHeading___Toc149024680 .anchor}**4.1 Type L‑867, Class IA and
Class IB Certification Testing.** Type L‑867, Class IA and Class IB
bases and extensions fabricated in accordance with the materials and
dimensions specified herein must be capable of passing the following
tests:

[]{#__RefHeading___Toc149024681 .anchor}**4.1.1 Type L‑867, Class IA and
Class IB Load Test.** Sample bases and extensions must be subject to the
load test described below. The base and cover assembly or assemblies
including spacer rings, extensions, and multi-section bodies must be
bolted together and placed on a flat steel plate mounted in a standard
testing machine. The test section must be a unit in height deemed to be
the maximum height to be furnished by the manufacturer with four 2 inch
(51 mm) conduit entrances located in the body section, located at 90
degree increments, 2-l/2 inches (64 mm) from the bottom of the base. A
load must be applied to the top part of the base through a block of
rubber l-1/2 inches (38 mm) thick, with a diameter equal to the cover
plate, and having a durometer hardness of 55 to 70. A load of 250 psi
(1724 kPa) must be applied uniformly over the area of the rubber block
at a rate not to exceed 10,000 pounds (4536 kg) per minute. The base or
any of the components will be considered unsatisfactory if there is any
permanent deformation or cracking of material or coating. The above test
will be repeated three times. After each loading, bolts must be checked
for loss of tension. The bolts must be torqued to the manufacturer's
recommended service torque after the first two loadings. The base and/or
assembly will be considered unsatisfactory if there is any loss of
torque in the bolts or permanent deformation of the flange or coating
after the third loading. Load testing is to be performed on free
standing units.

**4.1.1.1 Type L‑867, Class IA and Class IB Load Test, Adjustable Height
Bases and Extensions.** If the adjustable base or extension is designed
for installation in earth (no embedment support required), the base or
extension must be tested fully extended in free space and must be
subject to the load test in paragraph 4.1.1. If the base or extension
requires PCC embedment in order to meet the loading requirements, it may
be tested to the requirements in paragraph 4.1.1 with supporting PCC
embedment to simulate actual installation as directed by the testing
laboratory.

[]{#__RefHeading___Toc149024682 .anchor}**4.1.2 Type L‑867, Class IA and
Class IB Weld Integrity Test.** This test must be performed after each
assembly has undergone the load test described in paragraph 4.1.1. An
internal air or hydraulic pressure of 12 psi, ±2 psi, (83 kPa, ±14 kPa)
must be maintained within the assembly using pressure fittings. The
conduit entrances must include a sample of the conduit interfaces (hub,
grommet etc.) that are offered by the manufacturer for interfacing to
the conduit. The conduit entrances must include conduit stubs suitably
plugged during the conducting of the test. A high foam soap or detergent
solution of low surface tension must be brushed on welds, seams, and
joints to detect leakage. Alternatively, the assembly may be submerged
in a tank of water while pressurized to detect any air leakage. The
assembly will be considered unsatisfactory if leakage is evident. The
conduit entrances must be placed at least 24 inches (0.6 m) below the
water surface. Any leakage of water into the assembly will be cause for
rejection.

**NOTE:** *This test is also to be performed on bases designed to be
field height adjustable, but the extension itself does not have to be in
place.*

[]{#__RefHeading___Toc149024683 .anchor}**4.1.3 Type L‑867, Class IA and
Class IB Dimensional Tests.** Specimens must be measured for conformance
to the dimensions specified in Figures 1, 2, 3, and 4, as applicable.
Should any new product be introduced that does not exactly conform to
the fixed products shown, the applicable dimensions necessary to ensure
compatibility with certified light fixtures and bases must be applied.

[]{#__RefHeading___Toc149024684 .anchor}**4.1.4 Type L‑867, Class IA and
Class IB Protective Coating Thickness Test.** When utilized, the
thickness of protective coatings must equal or exceed those specified
herein. The weight of hot-dip galvanizing must be tested according to
the method described in ASTM A 153. Zinc plating thickness must be
tested by a method described in ASTM B 633.

[]{#__RefHeading___Toc149024685 .anchor}**4.1.5 Type L‑867, Class IA and
Class IB Visual Inspection.** Each unit must be visually inspected for
quality of workmanship and materials. The specified Class marking must
be inspected for correctness. Particular attention must be given to
smoothness and continuity of welds and seams, flatness and smoothness of
the flange surface, complete and uniform application of the protective
coating, freedom from excess zinc when applicable, and absence of burrs,
sharp edges, cracks, voids, penetrations or any other imperfection that
could potentially affect the structural integrity or performance of the
product.

[]{#__RefHeading___Toc149024686 .anchor}**4.1.6 Type L‑867, Class IB
Potassium Acetate Test.** Those bases and extensions certified to Type
L‑867 Class IB requirements must be subjected to testing to determine if
they are resistant to corrosion caused by deicing fluids containing
potassium acetate. The test consists of taking a test base and filling
it half full with a potassium acetate deicing fluid composed of 50
percent potassium acetate and 50 percent water, by weight. The test base
will have conduit connecting devices identical to that to be furnished
with the base with conduit stubs plugged and the top of the base must be
covered with an appropriate blank cover and gasket. The test base will
remain for 21 days at an elevated temperature of 194°F (90ºC). After the
test period the base and spacer ring must be inspected. There must be no
evidence of corrosion or leakage.

[]{#__RefHeading___Toc149024687 .anchor}**4.2 Type L‑867, Class IIA and
Class IIB Certification Testing.** Type L‑867, Class IIA and Class IIB
bases and extensions fabricated from materials to dimensions as
specified herein must be capable of passing the following tests.

[]{#__RefHeading___Toc149024688 .anchor}**4.2.1 Type L‑867, Class IIA
and Class IIB Load Test.** Sample bases and extensions must be subjected
to the load test described in paragraph 4.1.1.

[]{#__RefHeading___Toc149024689 .anchor}**4.2.2 Type L‑867, Class IIA
and Class IIB Weld Integrity Test.** Sample bases and extensions must be
subjected to the leakage test described in paragraph 4.1.2.

**NOTE:** *This test is also to be performed on bases designed to be
field height adjustable, but the extension itself does not have to be in
place.*

[]{#__RefHeading___Toc149024690 .anchor}**4.2.3 Type L‑867, Class IIA
and Class IIB Temperature Shock Test.** Temperature shock test
requirements apply only to Class II, non-metallic, Type L‑867 bases. A
temperature shock test must be conducted on a completed non-metallic
base assembly. The test must be performed according to MIL-STD-810,
Method No. 503.2, Paragraph II, Procedure I. The high test temperature
must be conducted at +130ºF (+54ºC) and the low test temperature must be
conducted at -65ºF (-54ºC). This test must be conducted on the assembly
after the load test described in paragraph 4.1.1 has been concluded. Any
cracking or joint separation of the materials making up the base
assembly will be cause for rejection.

[]{#__RefHeading___Toc149024691 .anchor}**4.2.4 Type L‑867, Class IIA
and Class IIB Dimensional Tests.** Specimens must be measured for
conformance to the dimensions specified in Figures 1, 2, 3, and 4, as
applicable. Mounting flange and base wall thicknesses must be measured
and must be equal to or greater than those required to pass the load
test and torque test described in paragraph 4.1.1. Should any new
product be introduced that does not exactly conform to the fixed
products shown, the applicable dimensions necessary to ensure
compatibility with certified light fixtures and bases must be applied.

[]{#__RefHeading___Toc149024692 .anchor}**4.2.5 Type L‑867, Class IIA
and Class IIB Protective Coating Thickness Test.** For components of the
base or assembly requiring protective coatings, the thickness of
protective coatings must be tested in accordance with paragraph 4.1.4.

[]{#__RefHeading___Toc149024693 .anchor}**4.2.6 Type L‑867, Class IIA
and Class IIB Visual Inspection.** Bases must be visually inspected in
accordance with paragraph 4.1.5.

[]{#__RefHeading___Toc149024694 .anchor}**4.2.7 Type L‑867, Class IIB
Potassium Acetate Test.** Those bases and extensions certified to Type
L‑867 Class IIB requirements must be subjected to testing to determine
if they are resistant to corrosion caused by deicing fluids containing
potassium acetate. The test must be conducted in accordance with
paragraph 4.1.6.

[]{#__RefHeading___Toc149024695 .anchor}**4.3 Type L‑868, Class IA and
Class IB Certification Testing.** Type L‑868, Class I bases and
extensions fabricated in accordance with the materials and dimensions
specified herein must be capable of passing the following tests.

[]{#__RefHeading___Toc149024696 .anchor}**4.3.1 Type L‑868, Class IA and
Class IB Load Test.** Sample bases and extensions must be subject to the
load test described in paragraph 4.1.1 with the following exception. A
load of 450 psi (3,103 kPa) must be applied uniformly over the area of
the rubber block at a rate not to exceed 10,000 pounds (4,536 kg) per
minute. The test section must be a unit in height deemed to be the
maximum height, to be furnished by the manufacturer. For 8 inch (203 mm)
Type L‑868, one inch (25 mm) conduit entrances must be used.

[]{#__RefHeading___Toc149024697 .anchor}**4.3.2 Type L‑868, Class IA and
Class IB Fatigue Test.** If a material other than ASTM A36 steel is used
for a major load-bearing structural component, the material must have a
fatigue limit or endurance limit no less than 27 ksi (186 MPa).
Specimens from the proposed material must be able to withstand a minimum
of 5 × 10^7^ cycles at 27 ksi (186 MPa) by a standard R.R. Moore
rotating beam fatigue test using polished specimens. No less than three
tests must be conducted to validate the material's fatigue properties.

[]{#__RefHeading___Toc149024698 .anchor}**4.3.3 Type L‑868, Class IA and
Class IB Impact Test.** If a material other than ASTM A36 steel is used
for a major load-bearing structural component, the material must have an
impact toughness equal to or greater than 15 ft-lb (20 J) at 20°F
(-7°C), per the Charpy V-notch test specified in ASTM E 23. No less than
three tests must be conducted to validate the material's impact
properties.

[]{#__RefHeading___Toc149024699 .anchor}**4.3.4 Type L‑868, Class IA and
Class IB Flange Bolt Torque Test.** Flanges must be tested by inserting
18-8 stainless steel fixture mounting bolts in all 6 bolt holes and
torquing all bolts to failure. Any cracking or permanent deformation of
the flange material will be cause for rejection. Any rotation or
distortion of installed remedial devices or replaceable inserts will
also be cause for rejection.

[]{#__RefHeading___Toc149024700 .anchor}**4.3.5 Type L‑868, Class IA and
Class IB Weld Integrity Test.** Sample bases and extensions must be
subjected to the leakage test described in paragraph 4.1.2.

**NOTE:** *This test is also to be performed on bases designed to be
field height adjustable, but the extension itself does not have to be in
place.*

[]{#__RefHeading___Toc149024701 .anchor}**4.3.6 Type L‑868, Class IA and
Class IB Dimensional Tests.** Specimens must be measured for conformance
to the dimensions specified in Figures 5-9, as applicable. Should any
new product be introduced that does not exactly conform to the fixed
products shown, the applicable dimensions necessary to ensure
compatibility with certified light fixtures and bases must be applied.

[]{#__RefHeading___Toc149024702 .anchor}**4.3.7 Type L‑868, Class IA and
Class IB Protective Coating Thickness Test.** For components of the base
or assembly requiring protective coatings, the thickness of protective
coatings must be tested in accordance with paragraph 4.1.4.

[]{#__RefHeading___Toc149024703 .anchor}**4.3.8 Type L‑868, Class IA and
Class IB Visual Inspection.** Specimens must be subject to visual
inspection as described in paragraph 4.1.5.

[]{#__RefHeading___Toc149024704 .anchor}**4.3.9 Type L‑868, Class IB
Potassium Acetate Test.** Bases and Extensions must be subjected to
testing to determine if they are resistant to corrosion caused by
deicing fluids containing potassium acetate. The test must be conducted
in accordance with paragraph 4.1.6.

[]{#__RefHeading___Toc149024705 .anchor}**4.3.10 Type L-868, Class IA
and Class IB Torque Test for Adjustable Height Bases and Extensions.**
All L-868 bases and extensions that utilize a method of height
adjustment that is inherent to their design that are designed for field
adjustment must be subjected to a torque test. The test base must be
held in the maximum adjustable height position utilizing the locking
method that will be utilized in the actual installation. A torque of
100,000 in-lbs (11,000 Newton-meters (N-m)) must be applied
perpendicular to the vertical axis of the base utilizing a steel cover
plate. The maximum torque must be achieved within 60 seconds of the
start of the test. The torque load must be applied three times. Upon
completion of the third torque loading, a measurement must be taken to
determine if the base top flange has been displaced in azimuth. An
azimuth displacement of 0.25 degree or greater will be cause for
rejection. All welds or seams must be examined for integrity and any
failure will be cause for rejection.

**NOTE:** *The locking method is defined as the method of locking that
is inherent to the device itself. This does not include any type of
embedment material that is used as a part of the installation - grout,
concrete, asphalt, etc. In the past, torque testing in embedment
material was permitted providing that production testing included random
samples being torque tested in the field following installation to
verify that the proper grout, etc., was applied in the proper manner as
was done in the lab. History has shown that it is not possible to ensure
that the appropriate production testing will be performed in the field
for this verification to be made. Therefore, devices are to be tested
free standing and the requirement to perform torque testing of random
samples in the field is rescinded.*

## 4.4 Production Testing

[]{#__RefHeading___Toc149024707 .anchor}**4.4.1 Lot Size.** The lot size
must be equal to the daily production rate.

[]{#__RefHeading___Toc149024708 .anchor}**4.4.2 Sample Size and
Acceptance Criteria.** Production testing must be based on the
procedures given in ASQC Z1.4*.* Sample size and acceptance criteria
must be based on Table 1 (Sample Size Code Letters), General Inspection
Level I, Table II-A (Single Sampling Plans for Normal Inspection), and
an Acceptable Quality Level (AQL) of 2.5. Note that normal inspection
may be switched to reduced inspection provided the conditions set forth
in ASQC Z1.4 are met.

[]{#__RefHeading___Toc149024709 .anchor}**4.4.3 Retesting.** If the lot
is rejected, the remainder of the lot may be tested and inspected on an
individual basis. As an alternative to individual testing and
inspection, the remainder of the lot may be tested using criteria in
ASQC Z1.4 for multiple sampling. Table IVB, Multiple Sampling Plans for
Tightened Inspection, using the appropriate sample size and an AQL of
2.5, must be used. Should the lot fail under the multiple sampling plan
criteria, all units must be inspected and tested individually and
repaired as necessary. Any samples that fail under any of the above
criteria must be repaired prior to shipment.

### **4.4.4 Type L‑867, Class IA and Class IB**.

**4.4.4.1 Dimensional Tests.** Random samples from each lot must be
subjected to dimensional tests as described in paragraph 4.1.3.

**4.4.4.2 Visual Inspection.** Random samples from each lot must be
subjected to visual inspection as described in paragraph 4.1.5.

**4.4.4.3 Weld Integrity Test.** Random samples from each lot must be
subjected to the leakage test described in paragraph 4.1.2, except that
load testing of production samples is not required.

### **4.4.5 Type L‑867, Class IIA and Class IIB**.

**4.4.5.1 Dimensional Tests.** Random samples from each lot must be
tested in accordance with paragraph 4.2.4.

**4.4.5.2 Visual Inspection.** Random samples from each lot must be
visually inspected in accordance with paragraph 4.1.5.

**4.4.5.3 Weld Integrity Test.** Random samples from each lot must be
subjected to the leakage test described in paragraph 4.1.2, except that
load testing of production samples is not required.

### **4.4.6 Type L‑868, Class IA and Class IB**.

**4.4.6.1 Dimensional Test.** Random samples from each lot must be
tested for conformance to the dimensional test described in paragraph
4.3.6.

**4.4.6.2 Visual Inspection.** Random samples from each lot must be
inspected for conformance to the requirements in paragraph 4.3.8.

**4.4.6.3 Weld Integrity Test.** Random samples from each lot must be
subjected to the leakage test described in paragraph 4.1.2, except that
load testing of production samples is not required.

**Intentionally left blank.**

# SECTION 5. PREPARATION FOR DELIVERY. {#section-5.-preparation-for-delivery. .Style-Heading-1-+-Centered-Before:--0-pt-After:--12-pt .unnumbered}

[]{#__RefHeading___Toc149024714 .anchor}**5.1 Packing.** Equipment must
be carefully packaged for shipment and delivery to avoid damage and/or
corrosion. Protective covers are to be included on all bases. (See
paragraph 3.1.3.5.3)

[]{#__RefHeading___Toc149024715 .anchor}**5.2 Marking.** Equipment must
be marked for shipment with the consignee's name and address, and other
pertinent information as needed by the installer. Marking must include
the following statement, "Installer: These products have been packed and
shipped in accordance with FAA recommendations. Products are to be
handled carefully so no damage to the structure or finish will occur
during the installation process."

**Intentionally left blank.**

![](media/image3.wmf){width="6.347222222222222in" height="8.2625in"}

[]{#__RefHeading___Toc145243849 .anchor}Figure 1. Flange, Type L-867,
Class IA, Class IB, Class IIA, Class IIB

![](media/image4.wmf){width="6.347222222222222in" height="8.2625in"}

[]{#__RefHeading___Toc145243850 .anchor}Figure 2. Body, Type L-867,
Class IA, Class IB, Class IIA, Class IIB

![](media/image5.wmf){width="6.347222222222222in" height="8.2625in"}

[]{#__RefHeading___Toc145243851 .anchor}Figure 3. Extensions, Type
L-867, Class IA, Class IB, Class IIA, Class IIB

![](media/image6.wmf){width="6.347222222222222in" height="8.2625in"}

[]{#__RefHeading___Toc145243852 .anchor}Figure 4. Accessories, Type
L-867

![](media/image7.wmf){width="5.7659722222222225in" height="8.25in"}

[]{#__RefHeading___Toc145243853 .anchor}Figure 5. Flange, Type L-868,
Class IA, Class IB

![](media/image8.wmf){width="6.347222222222222in" height="8.2625in"}

[]{#__RefHeading___Toc145243854 .anchor}Figure 6. Body, Type L-868,
Class IA, Class IB

![](media/image9.wmf){width="5.7659722222222225in" height="8.25in"}

[]{#__RefHeading___Toc145243855 .anchor}Figure 7. Sectional Body, Type
L-868, Class IA, Class IB

![](media/image10.wmf){width="5.7659722222222225in" height="8.25in"}

[]{#__RefHeading___Toc145243856 .anchor}Figure 8. Extensions, Type L-868
Class IA, Class IB

![](media/image11.wmf){width="5.7659722222222225in" height="8.2625in"}

[]{#__RefHeading___Toc145243857 .anchor}Figure 9. Accessories, Type
L-868

**Intentionally left blank.**

APPENDIX

![](media/image12.wmf){width="5.760416666666667in"
height="8.25763888888889in"}

**Figure A-1. Extensions and Spacers for 10-inch (254 mm) Diameter Type
L-868 Base, for Maintenance of Existing Installations Only**

**Intentionally left blank.**