Flight Manual STEMME S6
Doc.-No.:P400-006.000 E Page: 3-33 Revision: ---
Date of Issue: 07. October 2008 Agency approved Date of Rev.: --.--.----
3.12.1.12 Repeating Increase and Decrease of Manifold-Air-Pressure MAP
and RPM
A periodic increase and decrease of MAP and RPM is most likely caused by
oscillations of the manifold-air-pressure-control (while the yellow TCU-caution-
light is not flashing). The following procedure is recommended:
1. TCU-isolation-switch
Switch to ACTIVATED position
(the switch is UP) to isolate
2. after max. 5 seconds TCU-isolation-switch to
DEACTIVATED position (the
switch is DOWN) to re-activate
If the system is not operating normally:
3. TCU-isolation-switch to ACTIVATED position (the
switch is UP) to isolate the
waste-gate-actuator
4. Manifold-air-pressure is not controlled automatically anymore. Control
MAP (red MAP-warning-light must remain OFF) with the throttle.
Recommended operating limits:
75% MCP
(MAP : ≤ 31 inHg, engine speed ≤ 5000 RPM)
Caution: If the waste-gate-actuator is switched OFF (TCU-isolation-
switch is ACTIVATED), lower engine-power has to be
expected. The manifold-air-pressure-control is only possible
with the throttle.
Caution: A exceeding of the allowed engine-limits and/or deactivation
of the waste-gate-actuator must be documented by the pilot
in the A/C-logbook with details like: nature of incident, date,
duration and the degree of exceeding.
To Next Page
Loading...
Need help?
General
