MD Helicopters MD900 with PW206E, Flight Manual

Page: 352 / 450

CSP–900RFM206E–1
ROTORCRAFT FLIGHT MANUAL
MD900 With PW 206E
Handling Servicing
and Maintenance
Original
8–42
HYDRAULIC SYSTEM CHECK
F
With the aircraft operating at IDLE or FLY (100%):
F F
IIDS secondary display CHECK ‘‘1 HYD 2” CAUTION SEGMENTS ARE NOT
ILLUMINATED
F
With the aircraft operating at FLY (100%):
F F
HYD TEST switch SET AND HOLD TO ‘‘SYS 1”
F F
IIDS secondary display
CHECK ‘‘1 HYD” CAUTION SEGMENT ILLUMINATES
F F
IIDS alphanumeric display VERIFY 250 PSI MAXIMUM FOR HYD 1 AND 1,000
+100/–50 PSI FOR HYD 2
F F
HYD TEST switch
RELEASE AND CHECK ‘‘1 HYD” CAUTION
SEGMENT OFF
F F
HYD TEST switch SET AND HOLD TO ‘‘SYS 2”
F F
IIDS secondary display
CHECK ‘‘HYD 2” CAUTION SEGMENT ILLUMINATES
F F
IIDS alphanumeric display VERIFY 250 PSI MAXIMUM FOR HYD 2 AND 1,000
+100/–50 PSI FOR HYD 1
F F
HYD TEST switch RELEASE AND CHECK ‘‘HYD 2” CAUTION
SEGMENT OFF
VSCS CHECK
NOTE
: This functional check may be performed with the engines off.
F
Left and right VSCS switches OFF
F
IIDS alphanumeric display
VERIFY CAUTION SEGMENT ON AND ‘‘TOTAL STAB
FAIL” INDICATION
F
VSCS indicator needles CENTERED
F
Left VSCS switch ON
F
Right VSCS switch MOMENTARILY TO ‘‘TEST” AND THEN TO ‘‘ON’’
F
IIDS alphanumeric display VERIFY ‘‘RIGHT STAB FAIL” INDICATION FOR 5 TO 8
SECONDS, THEN OUT
F
Left VSCS switch
MOMENTARILY TO ‘‘TEST” AND THEN TO ‘‘ON’’
F
IIDS alphanumeric display VERIFY ‘‘LEFT STAB FAIL” INDICATION FOR 5 TO 8
SECONDS, THEN OUT
F
VSCS indicator needles VERIFY NEEDLES ARE APPROXIMATELY 55% RIGHT
OF CENTER WITH 0% CLP AND AIRCRAFT LEVEL
NOTE
: If the selected VSCS system fails the test, the failure annunciation will remain
on
the IIDS alphanumeric display.