09/01/2013
RANS S-20 RAVEN
TEXT MANUAL
00-29
AIRCRAFT INSTRUMENT MARKINGS & COCKPIT
PLACARDS
Your reference is FAR Part 91.9 Civil Aircraft Operating Limitations and Marking
Requirements
GENERAL
To insure that each person operating an aircraft does so within the operating
limitations prescribed for it, the FAA requires that there is available in it a
current Flight Manual, appropriate instrument marking and placards,
or any
combination thereof
.
The purpose of the flight manual, markings and placards is to detail for the
operator of the aircraft, the operational limitations prescribed for the aircraft.
In lieu of a flight manual, most amateur builders prefer to mark their instruments
and to affix the necessary placards to the instrument panel as the primary
means for complying with these requirements.
MARKINGS AND PLACARDS
The markings and placards necessary for the safe operation and handling of the
aircraft should be displayed in a conspicuous place and may not be easily
erased, disfigured, or obscured. Such placards and markings should include but
not necessarily be limited to the following criteria: Special emphasis on fuel
system markings are very important; such as fuel valves-on-off fuel octane
quantity, unusable fuel, minimum fuel for take-off, minimum fuel for inverted
flight, etc.
POWERPLANT INSTRUMENT MARKINGS
Each required powerplant instrument should be marked to indicate the
maximum and, if applicable, minimum safe operating limits with a
red radial
line
.
Each normal operating range is to be marked with a
green arc
not extending
beyond the maximum and minimum continuous safe operating limits.
Each engine speed range that is restricted because of excessive vibration
should be marked with a
red arc
.
