Robin DR400 Series, Pilot Operating Handbook

Page: 63 / 104

Supplement POH DR400/120D, DR400/140B,
DR400/180R, DR400/200R, DR400/RP
Issue 3
– July 2014
Page 3 - 13
Oil temperature too high
(1) Increase airspeed and reduce power as quickly as possible
(2) Check oil pressure. If the oil pressure is lower than normal (<2.3 bar
in cruise or <1.2 bar at idle),
i) Land as soon as possible
ii) Be prepared for an emergency landing
iii) Expect engine failure
(3) If the oil pressure is in the normal range
i) Land as soon as practical

Note : During hot weather operation or prolonged
climbs at low airspeed, engine temperatures could rise
into the yellow range and trigger the caution light. This
warning allows the pilot to avoid overheating of the
engine as follows:
1. Increase the climbing airspeed
2. Reduce power if the engine temperature approaches
the red area.
Coolant temperature too high
1) Check coolant level light
2) Increase airspeed and reduce the power.
3) Check cabin heat ................................................................... OFF
If coolant level light is on, or an obvious malfunction is suspected
(because airspeed was maintained above Vy, non-hot weather
conditions, cabin heat OFF) or if this does not cause the coolant
temperature to drop,
i) Land as soon as practical
ii) Be prepared for an emergency landing
iii) Expect an engine failure