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| UNAPPROVED PARTS\                                   |   | ![](me      |
| NOTIFICATION                                        |   | dia/image1. |
|                                                     |   | png){width= |
| SUSPECTED UNAPPROVED PARTS PROGRAM OFFICE, AVS-20   |   | "0.72986111 |
|                                                     |   | 11111111in" |
| 13873 PARK CENTER ROAD, SUITE 165                   |   | height="    |
|                                                     |   | 0.741666666 |
| HERNDON, VA 20171                                   |   | 6666667in"} |
|                                                     |   |             |
|                                                     |   | U.S.        |
|                                                     |   | Department  |
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|                                                     |   | of          |
|                                                     |   | Tra         |
|                                                     |   | nsportation |
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|                                                     |   | **Federal   |
|                                                     |   | Aviation**  |
|                                                     |   |             |
|                                                     |   | **Admin     |
|                                                     |   | istration** |
|                                                     |   |             |
|                                                     |   | **          |
|                                                     |   | *REVISED*** |
|                                                     |   |             |
|                                                     |   | *No.        |
|                                                     |   | 2006-00083* |
|                                                     |   |             |
|                                                     |   | *May 30,    |
|                                                     |   | 2007*       |
+-----------------------------------------------------+---+-------------+

***http://www.faa.gov/aircraft/safety/programs/sups/upn/***

*(See Background paragraph for highlighted revisions. Photos of antenna
adapters now included.)*

# AFFECTED PART

KX-99A antenna adapters.

# PURPOSE

The purpose of this notification is to advise all aircraft owners,
operators, manufacturers, maintenance organizations, and parts suppliers
and distributors regarding antenna adapters produced without Federal
Aviation Administration (FAA) production approval.

# BACKGROUND

Information received during an FAA suspected unapproved parts
investigation revealed that Aerospace Instrument Support, Inc.
(Aerospace Instrument), located at 1750 Westcourt Road, Denton, TX
76207, manufactured and sold KX-99A antenna adapters. The adapters were
not produced according to FAA requirements for manufacturing
modification parts and are therefore considered unapproved.

Evidence indicated that Aerospace Instrument failed to inform those who
purchased the KX-99A antenna adapters that the units were not
FAA-approved. At least 372 unapproved adapters were sold [between 2004
and 2006. Click [here](../UPN%202006%2000083photo.doc) for photos of
KX-99A antenna adapters.]{.mark}

**RECOMMENDATIONS**

Regulations require that type-certificated products conform to their
type design. Aircraft owners, operators, manufacturers, maintenance
organizations, and parts suppliers and distributors are encouraged to
inspect their aircraft and/or parts inventories for the adapters
manufactured by Aerospace Instrument, whether procured directly from
Aerospace Instrument or through intermediary sources. If any adapters
are found installed on aircraft, appropriate action should be taken. If
any are found in existing inventory, it is recommended that they be
quarantined to prevent installation until a determination can be made
regarding their origin and eligibility for installation.

 

**FURTHER INFORMATION**

Further information concerning this investigation and guidance regarding
the above-referenced adapters may be obtained from the FAA Manufacturing
Inspection District Office (MIDO) shown below. In addition to the above
recommendations, the FAA would appreciate any information concerning the
discovery of the referenced adapters, the means used to identify the
source, and the actions taken to remove the adapters from aircraft
and/or parts inventories.

*page 2 2006-00083*

This notice originated from the Fort Worth MIDO, 2601 Meacham Blvd.,
Fort Worth, TX 76137, telephone (817) 222-5819, fax (817) 222-5995; and
was published through the FAA Suspected Unapproved Parts Program Office,
AVS-20, telephone (703) 668-3720, fax (703) 481-3002.