Narco Avionics ELT 10 User manual

2, PlEOTS GUIDE
The ELT sbubl only C mtivtltod for tat ~SPX &tion t l) ar when m mqgmy &n&tg is
irndmt IfW pkt hols time priorro,tw& down, ht&buld us6 his kfsh pm c~mrnumett*
tions tnuwmiusr nrntd to 121.4 MHaandmake as maw MAYCIXY EhLU fapastiistameas
pmf6te &ag suurdartl MAYDAY pmdnes.
I, MAYbkY, MAWAY, MAYDAY
2.
Aircraft identification - 3 itbs
3, Txps of 4iri3Wfl
4. Pimititan ar ostimt6d positioa (s-tatc which)
5. Hearling (True lor Arlagnotbj (etare whidl)
6. True ar asfimatcrl airspeed tsZate 1~trioh)
7. AItitPrat
P, Fuel remaining. in hmm and dmtw
9. Naturt d distress
lo. Fjtotls int@n!ntioa (MI cat, fit&, mash kindins, -2:tc.f
f fa Asshtena desired
12. Tas 10 JecoM1 &&m dth mike button iEoltomd by airomft Odcnfhfeatim ad OVm-
acava4e the BLT tnpaualky until dl 00mmmIcadoa fat la possiMe b bm
carrrpleaed, After h&q the ELT caa be manually aetlvatCQ Bud SWOznD be
activated if the Mi* was ''safi''. and an etn%rgerrcy exists.
KNOW YDUR BLT AND 179 OPERATIDN!
All ELT IO trywndtrn con+ go imw "0" swift% ht will ~toarati~ aetiate the
transmitter when an mwcy landing d sufficW "G" fwce is p~countd.
The Bl~is an orany
box tbt wi~ be gemsalty lagated wit&n.urm bqgb ad ridblc
by the pitor OR mounted when it can% be m, ncar the tailasmmhly. Wlrta mwtltcd nesr
thetall It mt Ukdy dl1 be behind an(l~~tion plate and wkb BOinches ofthe fixed E%T
irnlenna, {in some airaft. thc ELT map be as fhr as I5 feet away.)
KNOW NOW AND WHEN TtJ MANUALLY AmVA'l% IT.
ELT 10 GOrnOL IaAD
FIGURE 1
The ELT ,,, , mnually actimtd by setting thc ON-OPP-ARM swltah btcd on the
*mtd Haad to OM and/or setting the EtT Romote Switch th& is located on the instrumcat

the IQLT b-ne,wh auy~Ilcrl t9 it, ,simp[ hOUI tbt BET WtN
k, veld td '
- htdlant~*&~~~~~~dchc~~s~&~~t.
~-the~~~has~li~wdt,h~~~Ca~~~~ba rem~~edhmtbcairo~an, R-W
thsIwge.winewilh th mraItby.pus%lfn$ it in,.tu~it~u~w&kwls~ CS , tkn
pus UP, The ~~tp MU In rm: his acsicw W~II ~IW pull wt the @astie ~onta~t
wpm~r +at is at-d to the 9~1ble. Th;e &zhw two wh mquh wmdriuer to
mawvk them. If a acmddwer b mwdkbkr wt u Bmak the wites.
FIGURE 2
Page 3

P in &I &iats%namia&ons yw don't hbb~ ymr BtWkW &epbttX)W tW&; for at
msvm you win nnt ~y~~Ttl&llSmi&n&w~tko"G*'lnvjtEhI&~d~W OF W$&
xw po9itioa me oN.QFF-ARy SWWH to ON. (Ifyout-rdw h bmtbniagr
the eeeirrr my bE tuned ts t215 MWa and. yo@ Ml tlMn bt? aWt@ %8~ YW isignat.)
When using the ELT in temperatuns Mow &~6Zh& keep the tramdttcr'insidc yourjacket
with the antenna ourside for Isngmt aperating tifc.
wilt extend battery p6wltr.
%.BL'T sh&ld operate inrswit$waturi?s OF 40 b + IWF atIlm& at the c~mefo, some
pwfmwme Is lost.
If the aimit irr ioc~t.cd ins v@'y, it isrxuaptutd taremiwe t& Wand pm&j,n ir@nEerma
paintkg skyward) In s clearing. an top of a knoll, I& tap d a W, a @tkw hhb &pot ta
provide EI'WQ hllsmissian WW,
ECT 1BJs watwh~si~tant and t notsffated fC~u*ddPg up to 1Yb '& sbckcrf
an, ernergmay landing - Ip.wnu ar water - @ltacEimte &cuni&. Sheulda wtrr fandiy ha
de, suampt to retrieve Me ELT 10 as saccn &st possibk, ~sp~eialty if the pht Ts
submmd.
tquippd &rsraTtb Ns~~a, Wtnsnt PmLmtbn~ can ad WBI brPaffl.
1 h*:
I, hwt ths atmu &u&y & 6clanecdws and ~~y dudlt iast&&h.
4. Cfmk tb sX.'S"m atrnurd swkb ad tm&ta 5wW h In tilc "ARM" pgoiriDa bcQDnr ffkht.

r. DESIGN FEATURES
Siegle unit hnmitt~r and power supply
"Reserve Power" battery pack
* MILITARY !me damage proof portable antenna
* Optimum performance fixed type antenna
Sealed "G" switch
Remote switch activation capability
4, TYPE DESIGNATION
The NARC0 ELT 16 is approved under TSO-C91 br
the following type categories:
........
Personnel Type (See Section 8)
ELT (.PI
Automatic Partable Type ............. ELT (AP)
Automtic Fixed Qpe .............. ELT (An
5. EQUIPMENT LIST
ORDER ITEMS AS APPLICABLE
Item No. Description Part No.
1 ELT 19 Emqency Locator
..........
Transmitter Assy 03716-0300
Complete With:
Battery Pack ............. 57674-0001
Mating Bracket Assy
Mounting Bracket Label . , 04476-6001
Mounting Bracket Strap. .. 57682-0101
Mounting Bra~kel ....... 9666-9001
ELT 10 Fixed Antenna
Assy (60" cable) .......... 016524101
ELT 10 Fixed Antenna
ASS^ (84" able) .......... 01652-0102
" -3
:iEc%-" * ly?&+g
+ Optha1 Remote Switfh Kit . . 0371645UQ
G3 A*
Complete with:
......... Switch, Locking 615884001
............ Switch, Plate 0448-1
..........
Label, Warning 04469-000 1
6. SPECIFICATIONS
The ELT 10 meets all the r~ir~ts of:
FAA TSWC91
FCC Part 87 (including 25 KHz occupied bandwidth)
Canadian Approval - DOC RSS 147 issue 2

7. PERFORMANCE DATA
Operatine Frequencies:
121.5 and 243.0 MHz 3~005%
Operating Life:
52 hours, minimum
Modulation Characteristics:
Type of emission
10% Amplitude Modulated (A9)
Audio Frequency downward sweep nnt less than 7M
'
Hz between the limits of 1BQO ad 300 Hz,
Sweep Repetjtion Rate ..... between 2 and 4 Hz
Modulation Iluty Cycle:
33% minimum to 55% maximum
Transmitter Duty Cycle: continuous
Peak Effective Radiated Power (PW):
75 MW minimum on ea~h frequency
Operating Temperature Rage:
-20°C to +SPC meets all performance requirements
~nviron4entwhich th~ ELT 10 is designed to with-
stand:
Temperature: 4S"G to 4-7 lBC
Altitude: 50,0&0, ft.
Vibration:
10G, S EEz to 2,069 Hz
Shack: W, 11 dswonds
Humidity: 93% fa+ 48 hum.
Automatic Activation:
automatically activated when
a farce in excess of 5
1 4-2, -0) Gs for a duration of 1 1 (+5, -0) mitlisecrunds
or greater is applied in a direction longituditial to the
aircraft axis from the front.
Manual Activation:
may be activated by switch located on transiiritter or
by remote switch.
Pattable Antenna -
Typ;e vertical rno~opole - storable in ELT 10 case.
Radiation Pattern ............. omnidirectianal
Fixed Antenna - ELT (AP) (Am:
Type , . . vertical monopole attached to outside of
aimaft - top loaded
..............
Radiation Pattern omnidirectional
Irnpcdance 50 ohms nominal at both frequencies

MU coax, with BNC connector termination.
System Weight:
Transmitker (including battery pack, portable ao-
tenna, and mounting bracket]. . -3.5 pounds (1.6 kg)
NARC0 Pixed Antenna (including attached coax
cable and connector) , . . . .. 0.2 pounds (91 grams)
Size: (exeludingantgnna)
8-13/16 x 2-9/16 x 3-1/8 (224 x 65 x 79mm) (Seie Figure71
8. INSTAtLAT1ON
Toinsurethe installerthat the ELT 10 is NOT transmit-
ting during installation, due to accidentalactivation, it
isrecommended that a nwby
VHF receiver be turned
ON and tunedto 121.5 or 243. MWz. Th% will allow the
in~tallertohear the signal and switch the unitto OFF.
The ELT is approved for use in the Personnel wnfig-
ymtion, however, should the Unit be activated within
the
aircraft; its antenna, extended or not, will not
radiate a god strong signal, Thereforetoinsuredesired
safctyandbest signal radiation,it is recommendedthat
the ELT 10 be iastalledanly in the ELT (AP) or (AF)
cor6gurarion , . . thus install with an external an-
tenna!
I. The instauation must be performed in accordance
with FAA requiremeats AC 43.13-2 or other appli-
cable airworthiness authority directives.
2, Mounting Location
ELT CAP') , .. . install iri area where unit is radily
~ccessibtefor portable deployment. Fixed an-
tenna must be mounted outside the aircraftbut
within 60 inches* of the transmitter.
ELT (Am . . . the hation of the ELT is impdrtant for
maximum protection in the event of a damaged
aircraft due to an emergency landing. Far aft
such as the centraltailcone section b a recom-
mended lacation. Tf possible, snount away from
the aimaft skin lo reduce the effects of me
due to external sources. DO NOT munt the
unit ia the bilge as plugged drain holes could
cause totail sustained submersion and possible
unit failure. The tixed antenna should k located
ontheout~ide of the akr& as dose as possible
to the
ELT 10. Aaaw slack in tbe coax cable if
possible.
* See Figure 3

3. The ELT 80 may b instdied .an a Mosimatd or
vertical surf= as lofig as. fie Ionaibriid tfeng2b-
wise) axis of the unit la padd (kf.Oq to ,the Iw-
gitudinal axis of the airen&.
4. Tbe: mow h&et must b-e insttrlt~d with the
mh)w gQbtfng .in the dhGtiQ81 of f&ht.
No. 6st-1 paahdJswews, gr-s h.ads$atat-eaat the
~@v&nt Ywarieg area, should be & fbr mowW
the bracket. The screws are irr8talbl &m &Q .lop dck?
of the bradprt.
Whm mounted to shekt r~eaS betweon. .D2W ad .@&l"
thick, lJ2" minimum diameter washem ohmld be
wsd at 4 munth@swew: Wen rntmnted
cthest
[email protected] than* 020" thick, the &&t metal&&% k
reinford with.030" thick pads a€ 1 square ieh
minimum IklW" Iti&tlse;ter washers) at each ammting
serew.
E the pad is baitid B W~aircmfksheet metaI arnd acts
.a @ozlbler plate, any wmbimdod tbaE bdm&s sbe bttd
cross ascthn thickness to .WV or greater ia accept.
able.
5. Install the ELT t0'tmnsmltter iffto the bra&&,
The mounting brrrcket and the ELT 10 case we ta*
pe~d thus the unit can fit the bracket but one way.
Install case with the ARROWED Idxl sideshawing.
bra~ket ~nw end unit arraw shwld win(
furward, 1
ELT I0
POSITIQ#ED IH
BRhClCn
6. Prqss the RESET impact switch button .. The impact
switch may have been activated during handling tar
shipping, howtver, a shipping @ard:Wks 4ke ON-
OFF-ARM ,switch in the OFF position preventing
undesired tranadssioa, . ,

If re**, 5 it. mtenm
cable m9y be Ierzgthm& by
adding one BNC termi-
nated extension whose
length is me of the f0110w-
B w
2ft.
4 R.
6 W.
I ft.
10 ft.
Max ove~all cable length 15 ft.

,.ua, and a warning label affixed adjacent to the
switek. NARCQ's Remote Switch Kit contains
such a switch
ad warning label. See Section 5.
Equipment List for kit paxt number.
I I. The final step of the installation of the ELT 10 is
that of positioning the ELT switch to ARM. This
compIetes the installation. *
* Should an installedcheckout be desired, refer to
Section
I I.
9. MAINTENANCE
Every three msnths or after 108 hours af aircraf!
flight time, whichever eonles fint, the battery pack
should be removed and inspected.
1. Check vbually for It%h@. L will show up as a
white residue w:hlch nmdy occurs 51% around $at-
tery leads.
2. Check visually for corrosion at battery terminals,
P.C: board and components..
3. Check for sewre battery leads.
General:
All shop maintenance tests should be perrwllneu I41 a
screen room.
Should the E-LT 10 transmitter be found defective by a
NARC0 Authorized Repair Station, a new replace-
ment pretested printed circuit board can be ~btained
fram NARC0 (PM 01651-0101).
The hard may be rerntsved by:
I, Set the ON-OFF-ARM switch to OFF.
2, Extend the portabtt antenna.
3. Unscrew the four screwsthat hold the control head
to
the battery casing.
4. Di'sconneft the battery by unsnapping the snap-off
battery pigtail terminals from the bottom of the
board.
5. Unsofderthe three lead connections.(SeeFigure b~
6. Remove the four screws that hold the board to the
control
head,
Reassemble in the reverse order of the above.Pressthe
reset button and then
set the ON-OFF-ARMswitch to
ARM. (Reinstall antenna as shown in Rwre 4,)
(Notethat the battery case mates the control hd only
one
way. match the screw holes.)
, -
Page 11

10, BA7TERY PACK REPLACEMENT
Replace battery (Narco PhJ 57674-0601) for any of the
following reasons:
A. Visual inspection shows signs of leakage, corrosiatr
or non-secure leads.
B. Past replacement dab noted on battery pack.
C. After ~lny emergency use.
D. After one ~utnulaEivc hour of use.
E, After operation of unknown duration.
F. If the tfadttwis stored in an area wkm the
temperature is normally abwe 38T (IOOPF), thebat-
tery shoutd bc reptaoed at no greater than 12 month
intervaIs. Battery storage at temperatureinexcess of
STC (130°F) must be avoided.
Replacement Pmwdure;
1. Sat the OWOFF-Aaha switch tu OFT.
2. Remo* the ELT 10 from ib mounting bracket.
3. Extend the portabk antema.
4. Unscrew the four scm that bid the mnmI
head to the battery casing.
Control Hcsd-Battery Case slide apart. Battery
connection leads - approximately 3" long.)
Page 12

5, Disconnect the battery by unsnapping the
srtap-off battery pigtail terminals from the bot-
tom
of the transmittar printed circuit board.
6. Dimd the old battery pack, DO NOT DIS-
CARD BATTERY IN FIRE!
7.
Apply a bcad of sealant (supplied with each bat-
tery pack) around joint of Control Head (Trans-
mitter Module)with a smd stiff bristlebrush or
stick.
8. Connect new battery pack terminals to thebot-
tom of the transmitter printed circuit board. '
9. Reinsert thecontrol head section into the battery
pack being careful not to pinch wires, and re-
place the four screws. If tY1.e four holes do not
line up, rotate the battery pack 18P andreinsert.
10. Reinstall the portable antenna as shown in Fig-
ure 4.
1 1. If applicable:
a. check that the fixed antenna connector is
secure.
b. oheck that contact separator is inserted be-
tween the antenna contact finger and the
portable antenna.
(See Figure 4)
c. check that the screws attaching the remote
switch leads are secure.
12. Press the RESET button and set the ON-OFF-
ARM switch to ARM.

11, RQUTfEIE OPERATlON CHECKS
The ELT 30 is POR AVIATION EMERGENCY US&
ONLY, However shsufd an operational check of the
ECT be desired, fallow the prmedure outlined here.
a. Cmdtl~tthetest only withinthetime perid made up
of thefirst 5 minutes, AFTER any hour or erdvise the
nearest FAA Air TMtc Control Facility (Tower,
F$S;etc.) prior to the test.
b. Modtor the transmission with the VHF ur UHF
receiver in yourdmaft or that in a nearby aircraft. If
neither is availablerequest the FAA Facility tolisten
for
your transmission.
c. The monitoring VHF or UHF receiver should be
turned ON and channeled to 121.5 or 243 MHz, its
volume controlshould
be positioned to the centerof
ib range.
d, A distinctivedownwardswept tone should be heard
fmm the monitoringreceiverwhen the switch of the
ELT, or she ELT *mote switch is set to ON,
G. Setthe switch to ON for approximately one second
then return it to ARM.
f. The ELT 10 should have been activated. If the tone
was heard the ELT 10 is functioningproperly. If the
tone was not heard the problem could be one of the
fallowing.
Check that the external antenna connector and
thecontact separator are secure. [ ELT (Am and
(Am units only)] . . . retest.
Check that
the remote switch connections are
secure and that the unit's ON-OFF-ARM switch
is set to ARM .. . retest.
* Check that the battery is still within itsdated use
period.
g. If the unit still does not transnit, obrdn services
from a NARCO Authorized Repair Station for
furthertest andlor
repair.
Page 14

12. LICENSE DATA"
me FehI Camm~nicaoims Comisbiou ~equfras
that the operator of the transmitter in this equipment
bid rr Restricted Radio-Tebphone Opefat~r Fennit, or
higher cIws limse. A penit may be obt&hieb by my
Ud. citizen from the nearest field office of the P.C.C. :
no examination is requhed.
If the aircraft has a current Private AircM Radw Sta-
tion Liceme no further Station kerning is required for
the installation ufthe Ewrgemy tocator Tmsmitter.
If the aimaft does not have a Private Aid Radio
Stittion License one must be oW*ned by RIiq F.C.C.
Form 454.
The ELT 10 may be installed, used, and tmted for up to
30 days without a s&tir)n license &er filin8 theF.C,C.
Fonn and while awaitia receipt of the station Iicense,
ptovidhq a copy of the submitted F.C.C. Fosm 4011 is
kept in the aircraft.
*Them ru;eseverd proposed rub changes pertaining to
ELTs under cunsidsration by the F.C.C, that &feet
licensing.
It ws proposed that Section 87.183 (1) be mdfied to
permit the single frequency assignment of 321.5 MHz to
aircraft stations when used only for an emergency
lbcatar transmitter. No application filing fee would be
required if an as~thohSion for an BLT dy is re-
quesyd. The presentrule making fequirine radio opera-
tian only, by a person holding an operator's permit
would be eliminated with respect to EL=rs.
I
The limnsee should inquire at the time af licensing to
see if these mIes are in effect.

'.C>
it
A.
r ELT 10 Emergency Locator ~raasmitter is for "A
9, ,Testing the E%T 10 must be performed accardirrg to the latest FAA a
aFf
d&Ectiveb.
3. When the transmitter is activated, it miy be Bccessaryl to c6nfIns vaiue coslr
munications to channels several megdiwtx rt?movad &om the esheqewy fi-
suenctts af 121.5 and 243. Interference with eommunIcationa a occur due to
tbe unique modulation characteristics rquhd,
:
3. The remote QNhRM switch must be installed with a GUARD and kfl in the
ARM position except for testing and emergency use. 4 ,*
5.
Only the fallawing ELT whip anteaw are mO*d and approvd hv NARC0 tp
'I
be used with the ELT 10:
Nrrrco Fixed Mnna - 60" - 0 1652-010 1
Nam Futed Antenna - 84" - 0 1652-0 102
Dome and Mtrcgoiin - DMQ I &l/A
~arnmunicationa Components Corp.. *,
ELT-10-214-2 and ELT-10-209 (cwix cable not to exceed 60").
ELT:10-1234 (Cwx cable not to exceed 48").
8 I= rrbove CCC antennas, can only be used with Nm's ELT 10 Chassis
Level BBB or later,
NOTE: A contact separator, such as that shown in FQure 4, page 9 should
be used with ALL installations of whip (remote) antennas.
/I
P. The barow pact must be replaced accordiop to the date marked on the EL7 10
.
label orrrptcr anc (I) cumulativehourof use. This conforms witb thehalf-life and
.
- use requimmwts~of FAA' TSO-C91.
O. The bhery pack must be replaced with NARC0 battery pack pa&nutnber
576760001.
!, -The anteitria contrrct separator must be in place Chen the fixed antenna cable
c~anector is connected to&-&LT,
-1
FIGURE 7
Page 16
(Changed - 3/80)