DOCUMENT NUMBER:
L500-912.820 ISSUE JUL 20, 2016
AMENDMENT: 00
DATE:
CHAPTERPAGE 748
MAINTENANCE MANUAL STEMME S12
7.6.1 CALIBRATION OF STALL WARNING SYSTEM OPTIONAL
INFLIGHT CALIBRATION
• Fly with a center of gravity position in the rear range with a total weight of 900 kg / 1985 lb.
•
Conguration for the calibration: Wing ap position 0°, landing gear and air brakes
retracted, throttle 0%, propeller pitch T/O, wings level, not above 1000 m / 3300 ft MSL.
Maintain a speed of 87 km/h / 47 kt.
• Turn adjustment screw until the acoustic warning is actuated.
• Check several times.
SECOND CHECK CONFIGURATION
•
Change wing ap position to L and throttle to IDLE°, the warning must operate at
80 km/h ± 3 km/h / 43 ± 1.5 kt
7.6.2 MAINTENANCE ON THE STATIC PRESSURE SYSTEM
See gure 3.6.a
INSPECT AND CLEAN THE PRESSURE PORTS
Removable probe on the nose-cone (three ports: Static pressure, dynamic pressure, and TE-pressure)
and the opening in the nose-cone for the stall warning positioned below the removable probe.
• Check pressure system for proper condition of air hoses and hose connections to instru-
ments, to pressure ports and to each other.
• The exible hoses and the lters/water separators must be replaced in case of contami-
nation, embrittlement or cracks.
• If moisture has accumulated in the hoses, they must be removed and can be reused after
they have been dried completely.