Service Bulletin SB-2014NM460011 July 5, 2014. - Ameri

(Total No. of Pages = 5)
SERVICE BULLETIN
SERVICE BULLETIN No. SB-2014-2014NM460011 dated July 5, 2014
Reference: UPN No.: 2014-2014NM460011 dated May 1, 2014
AFFECTED PRODUCTS
Optional Multi-axis G-switch P/N 450000-1 and its mounting tray P/N PL-AK450-1, used with Ameri-King Corp.
emergency locator transmitters (ELTs), for installation on helicopters only.
PURPOSE
This notification is to advise all aircraft owners, operators, maintenance organizations, and distributors regarding the
unapproved non-TSO status, of multi-axis G-switches and its mounting tray produced and sold by Ameri-King
Corp. , via Ameri-King Web Site www.ameri-king.net Web Link http://ameriking.net/documents/approval_documents
BACKGROUND
The Optional Multi-axis G-switch and its mounting tray, are optional accessories, non-TSO items. They may be
connected to Helicopter ELT, to allow the Helicopter ELT to activate in additional directions (-X, +/-Y and +Z
axes), whereas the TSO requires ELT to activate in +X axe direction only.
Lack of the Optional Multi-axis G-switch and its mounting tray, has no effect to the TSO ELT operation.
The ELT and all related accessories are classified as a non essential Equipment. (See FAA letter dated 4/16/08)
RECOMMENDATIONS
Ameri-King Corp recommends the optional Multi Axes G Switch 450000-1, to be disconnected from the Helicopter
ELT system as follows:
1. Moving the Remote Cable Assy 4500041 from: Muti Axes G Switch Receptacle P2 to: ELT main Unit
Receptacle P-1.
For General Installation Connection (Existing Configuration), Refer to Doc IM-451, App A, Fig 2.3 (Page 107).
For Wiring Diagram (New Configuration), refer to Doc IM-451, Fig 14.1a (Page 62)
2. For Direction Determination for Helicopter, refer to Doc IM-451, Fig 1.1 (Page 29)
3. Perform Quick Operation Check per Doc IM-451, App A.1 (Page 114)
If these articles are found in existing inventory, it is recommended that they be quarantined to prevent installation
until a determination can be made as to their disposition.
FURTHER INFORMATION
Further information concerning this Service Bulletin can be obtained from:
Ameri-King Corp.
17881 Sampson Lane, Huntington Beach, CA 92648, USA
Phone (714) 842-8555______Fax (714) 842-4235
[email protected]_________www.ameri-king.com
Attention: Keith Van
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Doc IM-451, Appendix A, Figure 2.3 (Page 107)
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Doc IM-451, Figure 14.1a, Wiring Diagram for AK-451 with 4-wire interconnecting
ELT Main Unit and Remote Switch Unit, Page 62,
Doc IM-451, Fig 1.1 (Page 29)
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APPENDIX A.1
QUICK OPERATION CHECK
ELT ON LEDs
(Main Unit +
Remote Unit)
Buzzer sound
Swept tone on 121.5 MHz
VHF Radio
1. ELT switch at ON position *
4 sec off
1 sec on
On continuously
2. ELT switch at ARM position
4 sec on
None
3. ELT switch at ARM position
for another 25 sec **
(Self Test Mode)
Self Test takes 25 sec
4. ELT switch at ARM position.
Shake
ELT hard Forward and Backward
(G Switch Test) *
None
NOTE: If the LEDs flash there is a problem.
Please refer to “Installation and Operation manual” paragraph 2.4 for
details.
4 sec off
5. Press RESET button
on Main Unit
6. Press ON button
on Remote Unit *
On continuously
1 sec on
None
4 sec off
1 sec on
On continuously
7. Press RESET button
None
on Remote Unit
Now the ELT switch on the Main Unit should be left at ARM position and the ELT is ready to go.
Note 1: The ELT switch is “make before break.” Return to OFF for at least 1 sec before changing
positions.
Note 2: Press RESET anytime to turn off unwanted transmission.
*WARNING Do not allow ELT On test duration and G Switch test duration, to exceed 5-10
seconds. A false alarm may be generated.
Any time the ELT is activated, it is transmitting a 121.5 MHz and 243.0 MHz distress signal.
If the ELT operates for approximately 50 seconds, a “live” 406 MHz distress signal is transmitted
and is considered valid by the Cospas-Sarsat satellite system.
**WARNING Any time that the ELT Main Switch is lifted and flipped from “OFF” to “ARM”, a 406
MHz self test burst is transmitted (after 25 seconds), however it is specially coded as a “self test,
Bit reversal” signal that is ignored by the COSPAS-SARSAT satellites.
Doc IM-451, APPENDIX A.1, QUICK OPERATION CHECK (Page 114)
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