During stall warning system testing, the master test switch must remain in which position until the column shaker and stall annunciator lights/horn actuate twice?

During stall warning system testing, the master test switch must remain in which position until the column shaker and stall annunciator lights/horn actuate twice?

• A. LH STALL WARN
• B. RH STALL WARN
• C. LH STALL WARN or RH STALL WARN
• D. OFF

Answer: (C)

The Beechjet 400A stall warning system is dual-channel, with a separate left and right channel driving the column shaker and the annunciator lights/horn. During a self-test, you energize the test circuit by selecting either the left or right stall-warn position on the master test switch. You keep the switch in that position until you observe the column shaker and the stall annunciator lights/horn actuating twice. This twice action confirms the test cycle has run and both warning paths are functioning as intended, verifying redundancy and proper operation of the entire warning system. Using either side for the test is acceptable because the procedure ensures the full test is completed and the indicators respond correctly.

The Beechjet 400A stall warning system is dual-channel, with a separate left and right channel driving the column shaker and the annunciator lights/horn. During a self-test, you energize the test circuit by selecting either the left or right stall-warn position on the master test switch. You keep the switch in that position until you observe the column shaker and the stall annunciator lights/horn actuating twice. This twice action confirms the test cycle has run and both warning paths are functioning as intended, verifying redundancy and proper operation of the entire warning system. Using either side for the test is acceptable because the procedure ensures the full test is completed and the indicators respond correctly.