4-17. ASPSU - Test (Cont)
2. Operational test procedures (Cont).
b. ASPSU test preparation (Cont).
(4) Loosen two small screws with your cross tip
screwdriver, and swing cover open to expose test
(5) Connect the test set cable furnished with the
(6) Close the pressure chamber door.
(7) Set altimeter barometric setting to 29.92
inches of mercury.
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