Where is the Spare POB Mask located?

The Spare POB (Portable Oxygen Bottle) Mask is typically located in the AFT Overhead Bin (OHB) on the aircraft's right side. This positioning is designed to optimize accessibility for crew members in emergency situations. The AFT OHB allows for quick retrieval, which is crucial during a cabin depressurization or other emergency that requires immediate oxygen supply for passengers or crew. Access to the Spare POB Mask in this location ensures that crew can reach it efficiently, facilitating safer emergency procedures.

The other choices, while they may refer to other locations where safety equipment or items might be found, do not correspond to the standard location for the Spare POB Mask within commercial aircraft. Thus, understanding the specific placement in the AFT OHB AC R is critical for effective response and preparedness in emergencies.