ELTs on 787 aircraft may be located in which combination?

ELTs on 787 aircraft may be located in which combination?

• A. 1L closet only
• B. G7 storage space only
• C. Both 1L closet and G7 storage space
• D. Neither location

Answer: (C)

The situation tests redundancy and multiple-installation options for the ELT on the 787. This aircraft design allows the Emergency Locator Transmitter to be installed in either the 1L closet or the G7 storage space, and it supports having both locations equipped with ELTs. Using both sites means two independent ELT units are available, preserving distress beacon operation if one unit is damaged or offline during maintenance. Relying on a single location would reduce redundancy and increase the risk of not having a functioning ELT in an emergency, while not installing an ELT at all would be noncompliant with safety requirements.

The situation tests redundancy and multiple-installation options for the ELT on the 787. This aircraft design allows the Emergency Locator Transmitter to be installed in either the 1L closet or the G7 storage space, and it supports having both locations equipped with ELTs. Using both sites means two independent ELT units are available, preserving distress beacon operation if one unit is damaged or offline during maintenance. Relying on a single location would reduce redundancy and increase the risk of not having a functioning ELT in an emergency, while not installing an ELT at all would be noncompliant with safety requirements.