ENSTROM 480/480B RFM SUPPLEMENT
1-1
FAA Approved: Mar 11/11
Report No. 28-AC-042
Feb 24/11
CHAPTER 1. OPERATING LIMITATIONS
1-1. General
NOTE
The use of this device does not alter the
published aircraft limitations in any way.
Refer to Section 1 of the basic Rotorcraft
Flight Manual.
1. The Powerline Detection System is designed for
either 50 Hz or 60 Hz power lines. The aircraft must be
equipped with the appropriate system for the power lines in
its operational area.
2. The Powerline Detection System will not warn
against lines, wires or strike hazards that do not emit an
electric field at a power line frequency. Some examples are:
a.
Guy
wires.
b.
Telecommunications
cables.
c. Direct Current (DC) power lines.
d. Unenergized power lines.
e. 50 Hz power lines if equipped with a 60 Hz detector.
f. 60 Hz power lines if equipped with a 50 Hz detector.
3. Due to static electrical build up on the aircraft, the
system may be unreliable at dew points below 0°C (32°F)
and should not be relied upon.
1-2. Marking and Placard
1. The following placard is required to be installed in
the aircraft, adjacent to the Powerline Detection System:
WARNING: THE PDS IS A PILOT AID ONLY
AND SHOULD NOT BE RELIED UPON AS A
SOLE MEANS OF AVOIDING POWER LINES
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