Which statement correctly describes airbelt distribution on the 777-200ER?

Which statement correctly describes airbelt distribution on the 777-200ER?

• A. All BC seats have airbelts.
• B. Airbelts are installed only at bulkhead BC seats.
• C. Airbelts are installed on all BC seats except bulkhead.
• D. Airbelts are never used on BC seats.

Answer: (B)

Airbelts are placed where they can provide the most protective benefit without adding unnecessary cost or interfering with the exit row area. On the 777-200ER, that targeted benefit is achieved by installing airbelts only at the bulkhead BC seats. The bulkhead location sits near the exit and involves seat geometry that can benefit from the extra restraint without cluttering the aisle or complicating the door and slide area. Extending airbelts to all BC seats would add weight and maintenance burden with diminishing returns in safety gain. Non-bulkhead BC seats continue to use the standard restraint system, so airbelts aren’t required there. Therefore, the statement that airbelts are installed only at bulkhead BC seats best matches how the system is actually implemented.

Airbelts are placed where they can provide the most protective benefit without adding unnecessary cost or interfering with the exit row area. On the 777-200ER, that targeted benefit is achieved by installing airbelts only at the bulkhead BC seats. The bulkhead location sits near the exit and involves seat geometry that can benefit from the extra restraint without cluttering the aisle or complicating the door and slide area. Extending airbelts to all BC seats would add weight and maintenance burden with diminishing returns in safety gain. Non-bulkhead BC seats continue to use the standard restraint system, so airbelts aren’t required there. Therefore, the statement that airbelts are installed only at bulkhead BC seats best matches how the system is actually implemented.