Section 3 – Emergency procedures
POWERPLANT EMERGENCIES
4. POWERPLANT EMERGENCIES
4.1. PROPELLER OVERSPEEDING
The aircraft is fitted with propeller/governor set by MT-Propeller such a way that
the maximum propeller rpm exceedance is prevented. In case of propeller over-
speeding in flight, apply following procedure:
1. Throttle Lever REDUCE power to minimum practical
2. Propeller Lever REDUCE as practical (not in feathering)
3. RPM indicator CHECK
If it is not possible to decrease propeller rpm, apply engine securing procedure
(see Para. 3) and land as soon as possible applying one engine inoperative land-
ing procedure (See Para. 6.6).
Maximum propeller rpm exceedance may cause engine components
damage. Propeller and engine shall be inspected in accordance with
related Operators Manuals.
4.2. CHT/CT LIMIT EXCEEDANCE
If CHT/CT exceeds its limit, apply following procedure:
1. Check affected engine CHT/CT
If CHT is above 135°C or CT is above 120°C
Reduce power setting to reduce CHT/CT up to
the minimum practical
3. Land as soon as practical
If CHT/CT continues to rise and engine shows roughness or power loss
SECURE (securing procedure on Para. 4)
5. Land as soon as possible applying one engine inoperative landing proce-
dure. See Para. 6.6
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