CODE RED is used by the flight attendants to alert fellow crew members that a passenger is experiencing cardiac arrest and to grab certain medical equipment.
Former pilot Bubb told Newsweek that two dings mean the plane is climbing through 10,000 feet and/or the pilots are asking flight attendants to prepare the cabin for landing. A whoosh sound means the landing gear is extending in preparation for landing, Bubb added.
What does it mean to get “flagged” by TSA? Getting “flagged” by TSA could mean a few different things. But for the most part getting flagged by TSA just means that you or your personal belongings will experience some type of additional screening when going through the airport.
It's performative and the pilot can't hear you anyway! Whether you love to clap or not, know that the pilots likely can't hear you. This is due to the soundproof-nature of the cockpit.
People, that stand up right when the plane lands, why? Most of the passengers that stand up as soon as the plane arrives at the gate are in a hurry to get their stowed items from the overhead bins and deplane the aircraft.
When the pressure drops, the PTU kicks in. The PTU is located near the main landing gear, and that's why passengers can hear the noise seemingly coming from mid-way down the aisle, under the floor. The barking happens most frequently at the gate and taxi, where most aircraft will run only one engine to save fuel.
After a rough flight, either because of turbulence or delays, it's not unusual for Americans to sarcastically applaud upon landing. But other nationalities, primarily from Central and South America and the Caribbean, commonly clap every time the wheels touch down to show respect to the pilots and flight attendants.