Section 3 – Emergency procedures
POWERPLANT EMERGENCIES
4.3. OIL TEMPERATURE LIMIT EXCEEDANCE
If oil temperature exceeds maximum limit (130°C):
If oil pressure is within limits
Reduce power setting to minimum applicable
Keep propeller speed higher than 2000 RPM
If oil pressure does not decrease
If oil temperature does not come back within limits, the
thermostatic valve, regulating the oil flow to the heat ex-
changers, could be damaged or an oil leakage can be
present in the oil supply line.
5. Land as soon as practical keeping the affected engine to the mini-
mum necessary power
6. Monitor OIL PRESS and CHT/CT
if engine roughness / vibrations or erratic behaviour is detected:
SECURE (see engine securing procedure
on Para. 3)
8. Land as soon as possible applying one engine inoperative landing pro-
cedure. See Para. 6.6
Excessive oil pressure drop leads to a high pitch propel-
ler configuration with consequent propeller feathering
and engine stopping.
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