+-----------------------+-----------------------+-----------------------+
| ![](medi              |                       | **Advisory Circular** |
| a/image1.wmf){width=" |                       |                       |
| 0.4097222222222222in" |                       |                       |
| height="0             |                       |                       |
| .3972222222222222in"} |                       |                       |
|                       |                       |                       |
| **Federal Aviation\   |                       |                       |
| Administration**      |                       |                       |
+-----------------------+-----------------------+-----------------------+

+---------------------------------+-----------------+-----------------+
| **Subject:** Change 4 to        | **Date:**       | **AC No:**      |
| MEASUREMENT, CONSTRUCTION, AND  | 02/03/2005      | 150/5320-12C    |
| MAINTENANCE OF SKID-RESISTANT   |                 |                 |
| AIRPORT PAVEMENT SURFACES       | **Initiated     | **Change:** 4   |
|                                 | by:** AAS-100   |                 |
+---------------------------------+-----------------+-----------------+

1.  **PURPOSE.** Appendix 4 has been revised to update contact
    information regarding FAA approved Continuous Friction Measuring
    Equipment.

2.  **PRINCIPAL CHANGES.** The following principal changes have been
    made:

    a.  To update information in Appendix 4.

**PAGE CONTROL CHART**

  ----------------- ----------------- ----------------- -----------------
  **Remove Pages**  **Dated**         **Insert Pages**  **Dated**

  Appendix 4\       08/25/04          Appendix 4\       02/03/05
  Chg 3                               Chg 4             
  ----------------- ----------------- ----------------- -----------------

![](media/image2.jpeg){width="2.0520833333333335in"
height="0.8020833333333334in"}

DAVID L. BENNETT

Director of Airport Safety and Standards

#  {#section .unnumbered}

# APPENDIX 4. FAA APPROVED CFME

+----------------------------------------+-----------------------------+
| **AIRPORT SURFACE FRICTION TESTER      | **AIRPORT SURFACE FRICTION  |
| INDUSTRIES AB\                         | TESTER\                     |
| **Metallgatan 7\                       | **+46 0 411 651 00\         |
| 271 39 Ystad, Sweden\                  | FAX +46 0 411 190 12\       |
| SWEDEN                                 | <sales@asft.se>             |
+----------------------------------------+-----------------------------+
| **AIRPORT TECHNOLOGY USA\              | ###                         |
| **NO LONGER AVAILABLE                  | ## SAFEGATE FRICTION TESTER |
+----------------------------------------+-----------------------------+
| **DYNATEST CONSULTING, INC.,\          | **RUNWAY FRICTION TESTER    |
| (FORMERLY K.J. LAW ENGINEERS, INC**.)\ | (M6800)\                    |
| 13952 US Highway 301 South\            | **(904) 964-3777\           |
| Starke, FL 32091                       | FAX (904) 964-3749          |
+----------------------------------------+-----------------------------+
| **FINDLAY, IRVINE, LTD.\               | **GRIPTESTER FRICTION       |
| **42-44 Bog Road, Penicuik\            | TESTER\                     |
| Midlothian EH 26 9 BU\                 | **+44 1968 672111\          |
| SCOTLAND                               | FAX +44 1968 671237\        |
|                                        | [www.findlayirvine.com](htt |
|                                        | p://www.findlayirvine.com/) |
+----------------------------------------+-----------------------------+
| **INTERTECH ENGINEERING\               | **TATRA FRICTION TESTER**   |
| **NO LONGER AVAILABLE                  |                             |
+----------------------------------------+-----------------------------+
| **DOUGLAS EQUIPMENT LTD**\             | **MU METER**\               |
| Douglas House, Village Road\           | +44 1242 531219\            |
| Arle, Cheltenham\                      | FAX +44 1242 571667\        |
| Gloucestershire\                       | email:                      |
| GL51 0AB UK                            | <spd@douglas-equipment.com> |
+----------------------------------------+-----------------------------+
| **NORSEMETER\                          | **RUNAR RUNWAY ANALYSER AND |
| **P.O. Box 125\                        | RECORDER\                   |
| Bogstadvien\                           | **+47 23 20 1270\           |
| 0323 0310\                             | FAX + 47 23 20 1271         |
| NORWAY                                 |                             |
+----------------------------------------+-----------------------------+
| **PATRIA VAMMAS AEC\                   | **BV-11 SKIDDOMETER\        |
| **P.O. Box 18 Vammaksentie\            | **+ 358 20 4694041\         |
| FIN-38201 Vammala\                     | FAX +358 20 4694250\        |
| FINLAND                                | [www.patria                 |
|                                        | .fi](http://www.patria.fi/) |
+----------------------------------------+-----------------------------+