An American Airlines A321 operating from Dallas/Fort Worth to San Diego was filmed making the familiar "whale noise" during flight.The sound is commonly associated with Pratt & Whitney PW1000-family engines, though CFM LEAP engines can produce a milder version too. It's caused by a low-power transient combustor tone—airflow passing through the combustor at just the right angle creates a resonance, similar to blowing across the top of a glass bottle.📹: aviationmaintenance

🚨#BREAKING: Watch as a Frontier Airlines aircraft forced to make an emergency after a pedestrian on the runway was struck and sucked into one of the jet’s engines

 📌#Denver | #ColoradoWatch as horrifying footage from earlier this morning shows the moment Frontier Flight 4345, departing from Denver International Airport and bound for Los Angeles, was forced into an emergency evacuation after a man reportedly walked onto the active runway and was sucked into one of the aircraft’s engines during