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2. LOCATION (Figures 1, 1A, 1B, 1C and 2)
COMPONENT QTY AREA ACCESS DOOR REFERENCE
Advisory panel 1 251L / 31-50-01
Aural warnings 1 241 / 31-50-00
3. DESCRIPTION
A. Advisory panel
The advisory panel is located in the upper part of the L.H. instrument panel, directly in front of the pilot. The panel contains separate indicator lights which illuminate green, amber or red when a specific condition occurs in the associated aircraft system :
- a green light is illuminated to indicate a normal condition,
- an illuminated amber light indicates that a cautionary condition exists, but which may not require immediate corrective action,
- when a hazardous condition exists requiring immediate corrective action, a red light illuminates. To control the intensity of the advisory panel lights, a day / night toggle switch is installed. An indicator light test switch allows the testing of all indicator lights to ensure bulb operation. As an option, additional indicator lights, associated to the GPS, are installed in the central portion of the advisory panel.
B. Aural warnings
- Stall warning
The airplane is equipped with a vane-type stall warning unit in the leading edge of the left wing. The vane is electrically connected to an alarm box secured to the lower portion of frame C4.
The alarm box supplies electrical power to the buzzer
The vane of the stall warning unit senses any changes in airflow over the wing and triggers off the buzzer.
This warning tone begins between 5 and 10 knots (9 and 19 km/hr) before the stall in all configurations.
ADAC
Validity : S / N 1 - 9999 31 -50-00 (EA) SEP 02
Page 1
"Landing gear-not-extended" warning
The aircraft is equipped with a throttle microswitch secured into the pedestal and a wing flap microswitch secured to the flaps actuator support. Both microswitches are electrically connected to an alarm box secured to the lower part of frame C4.
The alarm box electrically supplies the buzzer in the following configurations :
in the "landing gear up" configuration (or landing gear down and not locked), when the throttle is retarded at approximately 0.47 in (12 mm) from its rear stop, the throttle microswitch is actuated, causing the buzzer to trigger,
in the "landing gear up" configuration (or landing gear down and not locked), when the flaps are
extended beyond 15° (+ 5° ; - 0°), the flaps microswitch is actuated, causing the buzzer to trigger.
- NP alarm (Option) - refer to 22-12-00.
4. OPERATION
A. Alarm box
The alarm box operates according to the following table :
AIRCRAFT CONFIGURATION LOW-PITCHED SOUND
600 Hz HIGH-PITCHED SOUND
900 Hz
Stall X
L / G up - Throttle retarded X
L / G up - Flaps in landing position X
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