What is the correct sequence and duration for the PADS systems checkout?

• A. PBIT - 15 seconds; IBIT - 45-60 seconds; Grips - N/A; Boresighting - 90 seconds; PADS BIT - N/A
• B. PBIT - 15 seconds; IBIT - 40-50 seconds; Grips - N/A; Boresighting - 90 seconds; PADS BIT - N/A
• C. PBIT - 15 seconds; IBIT - 45-60 seconds; Grips - N/A; Boresighting - 60 seconds; PADS BIT - N/A
• D. PBIT - 20 seconds; IBIT - 45-60 seconds; Grips - N/A; Boresighting - 90 seconds; PADS BIT - N/A

Answer: (A)

The PADS checkout follows a fixed sequence of built-in tests and alignment steps with specific durations to verify readiness. Start with the quick power-on built-in test, which is about 15 seconds. Next run the internal built-in test to exercise the system’s internal subsystems, lasting roughly 45 to 60 seconds. Grips aren’t involved in this portion, so they’re not applicable. Then perform boresighting to align the optical/sensor axis, which takes about 90 seconds. The PADS BIT check isn’t part of this checkout, so it’s not applicable. This matches the option that lists PBIT 15 seconds, IBIT 45-60 seconds, Grips N/A, boresighting 90 seconds, PADS BIT N/A. The other options differ in one of those durations, so they don’t align with the standard procedure.