If the ISS is in BOTH, what happens when an unpinned ejection handle is pulled?

• A. Only the pilot's seat ejects
• B. Both seats will eject
• C. The seat remains pinned
• D. Emergency procedures are initiated

Answer: (B)

When the ISS (Inter-seat Sequencing System) is configured to BOTH, this means that the system is set to allow both the pilot and copilot seats to function simultaneously in the event of an ejection. If an unpinned ejection handle is pulled while in this configuration, it triggers the ejection sequence for both seats. This condition provides a safety mechanism that ensures that if one crew member needs to eject, both can do so without having to reconfigure the system or worry about unwanted delays.

The other options do not accurately reflect the operation of the ejection system in this scenario. For example, stating that only the pilot's seat ejects would imply that the ISS is set to a specific configuration that doesn't allow for simultaneous ejection, which contradicts the BOTH setting. The option suggesting that the seat remains pinned does not align with the actions that would occur when the unpinned handle is pulled since the intent of pulling the handle is to initiate ejection. Finally, while emergency procedures might be part of the broader context in which an ejection takes place, the specific action of pulling an unpinned ejection handle in the BOTH configuration directly results in both seats ejecting rather than merely initiating emergency procedures.