EDU message Fault condition Corrective action
# 1 (# 2) OVSP DET Failure of the over-
speed protection
system in the ECU.
Proceed with flight.
Make corrective action
before next flight.
MAIN UTIL PRES Failure of the main
utility hydraulic sys-
tem (pressure below
the minimum).
Check main utility sys-
tem pressure indicator.
Proceed with flight.
Emergency brake system
(PARK AND EMERG
BRAKE) may be re-
quired at landing.
WARNING
The utility hydraulic system services the landing gear exten-
sion system, the wheel brakes, the wheels lock and the rotor
brake, if installed.
There is sufficient pressure in the emergency accumulator for
one extension of the landing gear, after which there is
sufficient pressure to operate the emergency brakes. (The
parking brake handle is used for the emergency brake system
and does not provide differential braking). The toe brakes are
not connected to the emergency system.
EMER UTIL PRES Failure of the emer-
gency utility hydrau-
lic system.
Proceed with flight.
Correct trouble before
next flight.
MAIN UTIL CHRG Solenoid valve
locked open. The
main utility system
is operative.
Proceed with flight.
Correct trouble before
next flight.
RFM A109E
R.A.I. Approved 3-12A/(3-12B blank)
Rev. 16
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