Boeing B737 - Serialized Protocol (Long Message); Short Message Programmed Elt’s

B737
MAINTENANCE MANUAL
EFFECTIVITY
Post ELT STC ST03081AT
23-24-00
PAGE 212
JAN 02/07
3) Page 3 is a frequency and country code page. The frequency must read
between 406.030 and 406.020 MHz to pass. The programmed country code
must be the same country as the aircraft’s home base. Verify that the second
line of the display reads PASSE. Verify that the country code is the same as
the aircraft’s home base.
4) Page 4 contains the complete message in Hexadecimal notation. The third line
is an ID string that is unique to the beacon being tested. Verify that ID string on
the third line matches the ID printed on the product label of the 406 ELT.
NOTE: For ELT’s installed with an ELT/NAV Interface where the Interface is used to encode the
24 bit aircraft address, the ELT will be automatically re-programmed by the Interface
and will need to be relabeled with the new 15 digit hex ID string.
5) Page 5 describes the protocol type, the type of beacon , and the aircraft ID or
unit serial number. Verify that the aircraft ID matches the 24 bit address of the
aircraft (you will need to convert the aircraft’s Octal code to Hex).
6)
Page 6 contains information on the horning transmitter and error checking.
7) Page 7 contains information confirming that the long message (position data)
is present.
8) Page 8 contains the position data as received from the navigation system.
Verify that the position data is present for latitude amd longitude if using
ELT/NAV Interface.
9)
Page 9 is the main menu screen which is reached by pressing “Q”.
(g)
Serialized Protocol (Long Message)
1) For ELT’s that are programmed with serialized protocol verify that “S TEST
OK” is displayed on page 2, verify on page 3 that the frequency passes and
that the correct country is displayed.
2) Verify that the 15 digit hex code displayed on the bottom line of page 4
matches the 15 digit hex code printed on the ELT product label.
3)
If verifying received latitude/longitude, check page 8.
4)
All other information displayed may be disregarded.
(h)
Short Message Programmed ELT’s
1) For ELT’s that have been programmed for a Short Message protocol verify that
“S TEST OK” id displayed on page 2, verify on page 3 that the frequencies
passes and that the correct country is displayed.
2) Verify that the 15 digit hex code displayed on the bottom line of page 4
matches the 15 digit hex code printed on the ELT product label.
3)
All other information displayed may be disregarded.