Stall System Test - BOMBARDIER LEARJET 40 Pilot's Manual

Pilot's Manual

STALL SYSTEM TEST

A self-test mode is available when the weight-on-wheels signal indi-
cates that the airplane is on the ground and no system failure is detect-
ed. When the system test switch is rotated to the STALL position and
held down for approximately 7 to 10 seconds, the stall warning com-
puter shall demonstrate that the stall warning system is fully opera-
tional by performing the following events in the order listed:
(1) L AOA HT FAIL message appears in CAS.
(2) Low Speed Awareness (LSA) bar will begin to sweep
up the pilot side airspeed tape, the left (pilot's) column
will shake when the LSA bar approximately reaches
the indicated airspeed pointer, and the aural voice
warning "STALL" will be repeated through the cockpit
speakers and crew headphones.
(3) L AOA HT FAIL message extinguishes from the CAS
window, the LSA bar scrolls down the airspeed tape,
the left column stops shaking and the aural warning
stops.
(4) R AOA HT FAIL message appears in CAS. (Note: Mas-
ter caution tone may not sound when the R AOA HT
FAIL is annunciated. If the master caution tone is not
heard, then the STALL aural warning will be heard as
called out in the next step below).
(5) The LSA bar will begin to sweep up the copilot side
airspeed tape, the right (copilot's) column will shake
when the LSA bar approximately reaches the indicated
airspeed pointer, and the aural voice warning "STALL"
will be repeated through the cockpit speakers and crew
headphones (if the master caution tone was not heard
in the previous step).
(6) R AOA HT FAIL message extinguishes from the CAS,
the LSA bar scrolls down the airspeed tape, the right
column stops shaking and the aural warning stops (if
the aural warning was present in the previous step).
The left and right stall warning failure discretes are not checked during
self-test. It was necessary to inhibit the output of the left and right
failure discretes in order to permit display of the LSA bar on the PFDs
during test.
5-28
PM-132A