Embraer EMB145 Operation Manual page 295

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ON GROUND OPERATIONS
The following recommendations apply to starting and operating
engines on airports where volcanic ash has fallen and ground
contamination is present:
When the airplane is parked install engine covers or reposition
the airplane to limit blowing ash accumulation from wind and jet
blasts from other airplane.
During preflight, check that the engine inlet and exhaust areas
have been cleared of volcanic ash;
Check that all volcanic ash has been cleaned away from the
area within 25 ft of the engine inlets;
Use APU for engine starting only, not for air conditioning;
Prior to starting, dry motor the engine for one minute in order to
blow out any ash that may have entered the engine bypass
duct area;
Use minimum required thrust for breakaway and taxi; Avoid
single engine taxi;
Keep bleed valves closed during taxi. Use the cleanest
taxiways whenever possible;
Be aware of loose ash being blown by the exhaust wake of
other airplane. Maintain adequate ground separation and allow
for dust to set on the runway before starting the takeoff roll;
Use a rolling takeoff technique. Avoid setting high thrust at low
airspeeds;
After landing at an airport contaminated with volcanic ash,
minimize the use of reverse thrust to prevent any recirculation
ingestion;
Avoid static engine operation above idle;
Use APU for engine starting only, not for air conditioning.
REVISION 41
AIRPLANE
OPERATIONS
MANUAL
Copyright © by Embraer. Refer to cover page for details.
SUPPLEMENTARY
PROCEDURES
ENVIRONMENTAL
Page
23
1-02-79
Code
01

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