Where are the ELT type A/B located in BSI and NON BSI configurations?

The correct location for the Emergency Locator Transmitter (ELT) type A/B in both BSI and NON BSI configurations is indeed under the G4 left-hand side. This placement is critical as it ensures that the ELTs, which are vital for locating the aircraft in emergency situations, are secured yet easily accessible for crew members.

In the context of aircraft safety equipment, the strategic positioning of the ELT is designed for quick retrieval and deployment during emergencies. Ensuring it is located in an area that is systematically organized and logically accessible not only enhances the efficiency of emergency protocols but also aligns with regulations regarding safety equipment placement.

The other options may seem plausible but do not pertain to the actual configuration and established protocols for ELT placement. Placement near the exit doors or under the L1 jumpseat could potentially hinder accessibility. Similarly, overhead compartments are typically reserved for passenger belongings, making them an impractical choice for critical safety devices like the ELT. Thus, understanding the designated locations of safety equipment is essential for effective emergency response planning.