Specifications

NOTE: The TSO ap proval of the ELT
does not con sti tute in stal la tion ap proval.
All ELT in stal la tions are sub ject to field
ap proval for a given air frame by ei ther an
ap proved FAA DER or FSDO. For in stal
-
la tions out side of the US, con tact your lo -
cal civil avi a tion au thor ity rep re sen ta tive
for de tails.
WARNING
The signer of the FAA Form 337 is re
-
spon si ble for the ac cu rate and com plete
in stal la tion of this ELT as de fined pre-
viously.
Ad di tional in for ma tion re gard ing the com
-
ple tion of FAA Form 337 can be found
in Ad vi sory Cir cu lar AC 43.9-1E. Para
-
graph h (2) of this ad vi sory cir cu lar de
-
fines what is con sid ered to be ap proved
data for ma jor a l ter ations as fol lows:
“Data used as a ba sis for ap prov ing
major re pairs or al ter ations for re turn to
ser vice must be FAA-approved prior to
its use for that pur pose and in cludes:
FAR (e.g., air wor thi ness di rec tives), AC’s
(e.g., AC 43.13-1A un der cer tain cir cum -
stances), TSO’s, parts man u fac tur ing ap-
proval (PMA), FAA-approved
man u fac turer’s in struc tions, kits and ser-
vice hand books, type cer tif i cate data
sheets and air craft spec i fi ca tions. Other
forms of ap proved data would be those
ap proved by a des ig nated en gi neer ing
rep re sen ta tive (DER), a man u fac turer hold -
ing a del e ga tion op tion au tho ri za tion
(DOA), STC’s and, with cer tain lim i ta tions,
pre vi ous FAA field ap prov als. Sup porting
data such as stress anal y ses, test re
-
ports, sketches, or pho to graphs should be
sub mit ted with the FAA Form 337. These
sup port ing data will be re turned to the
ap pli cant by the lo cal FAA dis trict of fice
since only FAA Form 337 is re tained as
a part of the air craft re cords at Oklahoma
City.”
3.6.6. Buzzer In stal la tion
A warn ing buzzer is re quired for TSO
C126 ap proval. The buzzer (p/n
130-4004), is pow ered by the ELT unit
and there fore is not de pend ent upon the
air craft bat tery for op er a tion. It is not de -
signed to op er ate con tin u ously, but
sounds at pre de ter mined in ter vals, and
runs for shorter pe ri ods to ward the end
of bat tery life.
While the buzzer may be lo cated any
-
where on the air craft, it is rec om mended
that the buzzer be placed near the ELT
unit, as it is loud enough to be heard
out side the air craft when the en gine(s) is
(are) off. It is as sumed that if the en
-
gine(s) is (are) run ning then the cock pit
light will warn the pi lot. Placing the
buzzer in the cock pit is not rec om mended
due to the very dis tract ing, loud, si-
ren-type sound it pro duces when the ELT
is in ten tion ally or in ad ver tently ac ti vated.
Since the buzzer op er ates in tan dem with
the ELT cock pit switch panel light, it
would only serve as a re dun dant warn ing
in di ca tor in the cock pit en vi ron ment.
One way of mount ing the buzzer is to
fab ri cate a right an gle bracket us ing .092
inch alu mi num as shown in fig ure 3-12.
Wire the buzzer to the ELT as shown
in the wir ing di a gram (Fig ure 3-10). Con
-
nect the pos i tive (+) ter mi nal to pin 2 of
the ELT con nec tor and the neg a tive (-)
ter mi nal to ground.
3.7. Trans mit ter Test
1. Al ways per form the tests within the
first 5 min utes of the hour (UTC) as re
-
quired by AC 43.13-1B, 12-21 & 12-22
Note 3. Be sure to no tify any nearby
con trol tower of your in ten tions.
ARTEX AIRCRAFT SUPPLIES DOCUMENT #570-5000
12/10/02 PAGE 3-17