Whelen 71163 User Manual
2.56 ± .06
DIA. AT BASE
2.28 ± .06
.09
®
ENGINEERING COMPANY INC.
MADE IN THE U.S.A.
.180 DIA. (3) HOLES
EQUALLY SPACED ON A
3.125 ± .010 DIA.
TOP VIEW
C
L
C
L
+28V
GROUND, NEG. (-)
Terminal Posts
#6-32NC-3A
#6-32 Self-Locking Nut
MS21043-06
(2) Incl.
Crew Call Horn
POS. (+) 28VDC
Route 145, Winthrop Road,
Chester, Connecticut 06412
Phone: (860) 526-9504
Fax: (860) 526-2009
Internet: www.whelen.com
Sales/Service e-mail: aviation@whelen.com
INSTALLATION PROCEDURES: The following information is
to assist in the installation of a Whelen Ground Crew Call Horn.
1. Using approved connectors, wire the unit as shown (Fig.1).
Tighten the hardware until a maximum torque value of 6
in./lbs. is achieved.
2. Install the unit using the mounting diagram shown (Fig.2).
Insure that the wire leads are clear of any obstructions and
ty-wrap as required.
Installation Guide:
Ground Crew Call Horn
P/N 01-0771163-00
3. Check all avionics systems for interference from the
installation.
4. A flight check should be performed by a properly certified
pilot.
5. Update aircraft records, complete Form 337 and obtain
FAA field approval for installation, if necessary.
Fig.1 Fig.2
GENERAL NOTES
• VOLTAGE - 28V NOM. (18VDC MIN TO 32VDC MAX.)
• CURRENT @ 28V - 55ma TYP. / 600ma MAX
• SOUND INTENSITY - The signal provides a sound intensity of 105dB (+13dB - 3dB) as indicated on a standard meter at a distance
of 3 feet when operated at 28VDC under conditions encountered in a sound-proof room.
• FREQUENCY - 25-20,000 HZ
Aviation
• WEIGHT - 0.65 lbs. (MAX)
For warranty information regarding this product, visit www.whelen.com/warranty
©2007 Whelen Engineering Company Inc.
Form No.14113A (082813)
Page 1
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