Aerial search teams located the wreckage of a U.S. Navy plane after a full day scouring the mountains and forests east of Mount Rainier.

Two crew members flying the EA-18G Growler of Electronic Attack Squadron (VAQ) 130 were still missing as of Wednesday afternoon, more than 24 hours after Tuesday afternoon’s crash into the side of a mountain during of a routine training flight. The identities of the crew members have not been released and the causes of the accident are under investigation.

Search efforts continue, according to a Naval Air Forces press release.

An emergency operations center was established at Naval Air Station Whidbey Island to coordinate response efforts. The U.S. Navy prepared to deploy personnel to secure the remote site of the $67 million plane crash. It is not accessible to motorized vehicles.

The Federal Aviation Administration imposed a four-day flight restriction around Mount Aix in Yakima County “to provide a safe environment for research.”

Mount Aix is ​​a 7,766-foot peak located in the William O. Douglas Wilderness, 24 miles southeast of Mount Rainer.

“I am grateful for the tremendous teamwork demonstrated by the NAS Whidbey Island squadrons – VAQ, VP, VQ, TOCRON 10 and SAR – as Team Whidbey continues to respond to our tragic accident,” said Capt. David Ganci, commander of the US Pacific. Fleet electronic attack wing. “I am also grateful to local law enforcement, responders and tribal communities whose partnership has been essential in planning our critical next steps to access the site.”

Multiple search and rescue teams, including a US Navy MH-60S helicopter, were launched from Naval Air Station Whidbey Island “to locate the crew and examine the crash site,” according to an earlier statement .

Flight operations continued Wednesday evening, with launches from NAS Whidbey Island and searches in the area 30 miles west of Yakima. Responders faced mountainous terrain, cloudy weather and low visibility during the search.

Additional units that supported the search included the US Navy’s First Fleet Aerial Reconnaissance Squadron (VQ-1), Patrol Squadron (VP-46), NAS Whidbey Island Search and Rescue, and the 4 -6 Air Cavalry Squadron of the United States Army from Joint Base Lewis-McChord. .

The 92nd Air Refueling Wing’s 36th Rescue Squadron, based at Fairchild Air Force Base, also responded to support efforts, said Lt. Sidney Walters, 92nd Air Refueling Wing public affairs chief.

Search teams found the crash site shortly after 12:30 p.m. Wednesday, about 21 hours after the plane crashed, according to the Naval Air Force.

The cause of the accident remains under investigation.

The VAQ-130, also known as “Zappers,” is based at Naval Air Station Whidbey Island and recently completed a combat deployment on the aircraft carrier USS Dwight D. Eisenhower, according to the U.S. Navy.

The EA-18G Growler is a variant of the F/A-18 family of aircraft that combines the F/A-18F Super Hornet platform with an electronic warfare suite, according to the US Navy website. All EA-18G squadrons are stationed at NAS Whidbey Island, with the exception of VAQ-141, which is based at Marine Corps Air Station Iwakuni, Japan.

The first Growler test aircraft entered production in 2004 and made its first flight in 2006, according to the US Navy.

In 2010, three squadrons, VAQ-132, 141 and 138, transitioned to the Growler. Since then, the Growler has been deployed around the world.

In 2013, a US Navy EA-6B Prowler, based at Naval Air Station Whidbey Island, crashed during a routine training flight in a farm field west of Harrington, killing three aviators on board. An investigation into the accident determined that it was caused by pilot error.