Emergency and
Malfunction Procedures
CSP–520N–1
MD 520N (500N) ROTORCRAFT FLIGHT MANUAL
R
Original
3–27
FAA Approved
3–15. OTHER MALFUNCTIONS
ENGINE AIR PARTICLE SEPARATOR FILTER CLOGGED (IF INSTALLED)
Indications:
Yellow
AIR
FILTER
CLOGGED
indicator ON.
Conditions:
A predetermined pressure differential has been reached across the engine
air inlet.
Procedures:
F
FILTER BYPASS control handle: OPEN
F
SCAV AIR: OFF
F
Service particle separator prior to next flight (Ref. HMI).
To prevent compressor erosion avoid operation in a dirty or dusty
environment with the filter bypass door open.
CAUTION
