ACR&Artex ELT to Nav Interface Boeing - Manual (Page 34)

ACR ELECTRONICS, INC / ARTEX PRODUCTS
ABBREVIATED COMPONENT MAINTENANCE MANUAL
-B (453-6501)
25-69-11
Page 34 of 58
JUL 28/11
TASK 25-69-11-750-804
4. Post-Installation Functional Testing
SUBTASK 25-69-11-990-001
A. General
CAUTION: ANY ELT RUNNING V133 SOFTWARE (SEE PRODUCT LABEL) MUST BE TESTED IN AN
RF CONTAINER, SCREEN ROOM, OR CONNECTED TO A DUMMY LOAD VIA THE
ANTENNA COAX CONNECTION, BECAUSE THE V133 SOFTWARE TRANSMITS A FIXED
TEST MESSAGE AT ELT RESET, NECESSITATING A “LIVE” BROADCAST TO READ THE
ACTUAL MESSAGE. ANY ELT RUNNING V134 OR V135 SOFTWARE TRANSMITS THE
ACTUAL 406 MHZ MESSAGE AT RESET AND MAY BE TESTED IN SITU.
(1) This task consists of three subtask testing requirements:
(a) A position data test, which verifies ELT/NAV Interface -B position data functionality by
reading and validating position data broadcast by the ELT.
(b) 24-bit address programming test, which verifies ELT/NAV Interface -B 24-bit address
reprogramming functionality by initiating reprogramming and checking for an error
indication.
(c) 15-digit hex ID determination, which reads the programmed hex ID, country, and
country code broadcast in the 406 MHz message and provides instructions for relabeling
and re-registering the ELT, as applicable.
SUBTASK 25-69-11-750-001
B. Position Data Verification Test
CAUTION: DO NOT ALLOW THE ELT TO STAY ACTIVE LONGER THAN 40 SECONDS DURING THIS
TEST. AFTER APPROXIMATELY 50 SECONDS THE ELT WILL BROADCAST A 406 MHZ
BURST AND THIS SIGNAL WILL BE INTERPRETED AS A VALID EMERGENCY SIGNAL BY
THE COSPAS-SARSAT SATELLITE SYSTEM.
(1) Perform the following procedure within the first 5 minutes after the hour (UTC), as required by
AC 43.13-1, Chapter 12, § 12-22, Note 3.
(a) Notify any nearby control tower of your intentions.
(b) Turn on the aircraft navigation system and verify it is receiving valid position data.
(c) Verify the ELT/NAV Interface -B is powered up and has at least 30 seconds to initialize.
(d) Set the 453-1000 ELT Test Set (ETS) beacon reader to receive and decode the ELT
digital message. Refer to the ETS operating manual (570-1000) for ETS operating
instructions and additional details.
NOTE: The ETS antenna should be within 30 feet of the aircraft 406 MHz antenna.
NOTE: A beacon reader equivalent to the ETS may be used, provided it is capable of
receiving and decoding the 406 MHz digital message.
(e) Activate the ELT by placing the local control switch or remote control panel switch in the
“ON” position.