Passengers on a United Airlines flight got a jolt Tuesday when an engine cover came off their Boeing 777 as it was en route to Honolulu from San Francisco.

No one was hurt and United Flight 1175 ultimately taxied to the gate where passengers deplaned normally, but not before some on board captured dramatic images that have since been shared to social media.

“There was a loud bang ... and then the plane really started shaking,” passenger Allison Sudiacal told Hawaii News Now. “There was a loud boom and then it was like rattling and the plane was kind of shaking like boom, boom, boom.”

THE ASSOCIATED PRESS'Plane really started shaking': United flight loses engine cover, makes emergency landing

This photo provided by passenger Haley Ebert shows damage to an engine of a Boeing 777 after parts came off the jetliner during its flight from San Francisco to Honolulu on Tuesday, Feb. 13, 2018. The plane landed safely as emergency responders waited nearby.
AP

Her husband Tim called the event “absolutely terrifying,” according to Hawaii News Now.

Another passenger, identified on Twitter as Maria Falaschi, echoed that sentiment.

“Scariest flight of my life,” she tweeted, along with photos of the engine and its missing cover.

Despite the scare, passengers said United’s crews handled the situation well.

“They let us know that we had to brace for impact in case there was a rough landing. It was scary. But they did a really good job,” Sudiacal added to the network. She was traveling with her 4-month-old son, her husband, Tim, and his parents.

One passenger even appeared to take a moment of levity, photographing the emergency exit card up against the window within view of the engine. 

"I don't see anything about this in the manual," Erik Haddad tweeted, along with the photo. 

Federal Aviation Administration spokesman Ian Gregor told The Associated Press that an emergency was declared due to a vibration in the right engine. The agency will investigate the incident.

"United flight 1175 traveling to Honolulu from San Francisco landed safely after the pilots called for an emergency landing because of an issue with the #2 engine," United said in a statement released to USA TODAY. "Our pilots followed all necessary protocols to safely land the aircraft. The aircraft taxied to the gate and passengers deplaned normally. United is fully cooperating with the NTSB and FAA investigation of the event."

Flight 1175 arrived to the gate in Honolulu at 1:02 p.m. local time (6:02 p.m. ET),  22 minutes later than scheduled, according to United's website.