Jetting off on vacation can be a comforting experience. A quick check, you know there will be food, aisle seats, and ever-smiling air hosts. You know that isn’t all. Aircraft is packed with features that are secretly keeping you safe.

1. Ash Trays in the Washroom

Are you mulling on why have ashtrays in the washrooms on a plane? FAA reiterates that lavatory doors have to be fitted with ashtrays. As cited by British Airways in 2009, if someone were to light a cigarette on board, there should be a safe place to extinguish it.

2. Handles by the Emergency Exit door

When passengers panic, they may pull or push crew out with them in the case of an emergency evacuation. The handles offer the staff something to hold on to.

3. Black Triangles on the Wall

The mysterious black triangles indicate the position from which the wings can be spotted by staff from the cabin. It extends the best angle to check the status of flaps and slats.

4. Axes in Cockpit

Axes in the cockpit could be a lifesaver. The doors can be cut with axes, as it was done on German Wings Airbus A320. It can also be used as firefighting equipment. Most carriers are considering replacing axes with crowbars.

5. Wing Hooks

The wing hooks can come in very handy in case of water evacuation or an escape; the hooks can be attached to ropes for people to hold on to. Tying lifeboats to the wings can also be considered.

6. Tiny Holes in Plane Windows

All plane windows are featured with three different acrylic layers, and the middle one has a breather hole. The tiny gap helps to regulate the pressure changes.