2015 Eglin Air Force Base helicopter crash

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2015 Eglin Air Force Base helicopter crash
UH-60M of 25th Combat Aviation Brigade near Hawaii in 2014 (cropped).JPG
A UH-60M Black Hawk similar to the one involved
Accident
DateMarch 10, 2015 (2015-03-10), 2021:38  Central Standard Time (UTC-7:00) [1]
Summary Loss of control due to spatial disorientation resulting from entry into IMC
SiteOff the coast of the Florida Panhandle, United States
30°24′05″N86°48′05″W / 30.4013°N 86.8013°W / 30.4013; -86.8013 Coordinates: 30°24′05″N86°48′05″W / 30.4013°N 86.8013°W / 30.4013; -86.8013 [2]
Aircraft
Aircraft type Sikorsky UH-60M Black Hawk
Operator United States Army
Registration 13-20624 [1]
Occupants11
Passengers7
Crew4
Fatalities11
Survivors0

On March 10, 2015, a Sikorsky UH-60 Black Hawk helicopter of the United States Army crashed off the coast of the Florida Panhandle during a training exercise at Eglin Air Force Base, [3] killing all eleven people on board. The helicopter was reported missing during foggy conditions at 8:30 PM. [4] The helicopter was assigned to the 1-244th Assault Helicopter Battalion, based in Hammond, Louisiana. [5]

Contents

Flight

The UH-60M helicopter was on a night training flight on March 10, 2015 when it disappeared. The Marines on board the helicopter were supposed to be dropped off by the helicopter and make their way ashore to simulate an over-the-beach landing. They had conducted a similar exercise earlier in the day. [6] The helicopter flew into dense coastal fog that night and disappeared, [7] approximately five minutes after takeoff. [8]

Passengers and crew

There were eleven people on board the helicopter at the time, of whom seven were U.S Marines assigned to a special operations unit and four were U.S Army soldiers and members of the Louisiana National Guard. [5] [6] The Black Hawk helicopter was piloted by Chief Warrant Officer 4 (CW4) George Wayne Griffin Jr., 37, and CW4 George David Strother, 44; both were members of the 1st Battalion (Assault) of the 244th Aviation Regiment, a unit of the Louisiana Army National Guard (LAARNG). [8]

The Marines on the helicopter were assigned to Marine Corps Special Operations Command (MARSOC) Raiders Team 8231, based at Marine Corps Base Camp Lejeune in North Carolina. [8] [9]

Helicopter

The helicopter, assigned tail number 13-20624, was new. Sikorsky installed the engines in August 2014, completed flight tests on the aircraft that December, and maintenance personnel ferried it from NAES Lakehurst in Lakehurst, New Jersey to Hammond in January 2015. At the time of the accident, it had approximately 60 hours of flight time. [10]

Events

At approximately 1945  CST, CW4 Griffin was briefed on weather conditions prior to launch; the UH-60M piloted by CW4 Griffin and CW4 Strother (operating under callsign MOJO 69) took off with another LAARNG UH-60M at 2016 CST to perform the training exercise. [1] : 3  CW4 Strother was recorded saying "Gee, it's dark as (expletive). That don't help none," shortly after takeoff. [11] : Timestamp 7:35.538  Once MOJO 69 crossed the shoreline, they entered what the investigation later called a Degraded Visual Environment at approximately 173 seconds after takeoff; [1] : 4, 14  the other UH-60M did not follow MOJO 69 into the fog, choosing instead to turn east and hover. [1] : 4  Four seconds after one of the aircrew noted they were over the water, CW4 Griffin noted "Yeah, it's too dark to see the (expletive) water." [11] : 10:05.838 

Illustration showing MOJO 69 flight path, 10 Mar 2015 MOJO 69 Flight path (extracted from Exhibit 20).jpg
Illustration showing MOJO 69 flight path, 10 Mar 2015

After entering the fogbank, both pilots of MOJO 69 started exhibiting signs of spatial disorientation, according to both the flight data recorder and cockpit voice transmission transcripts; [1] : 4  MOJO 69 came to zero knots indicated airspeed and began flying backwards almost immediately after losing visual references. This deviated from the mission path, and CW4 Griffin, the pilot-in-command, failed to announce the deviation, providing evidence that he had become disoriented without realizing it. [1] : 14  MOJO 69 turned on their position light and asked the other helicopter's flight crew to put on their position light as well; the other helicopter's crew radioed back that they could not see MOJO 69. [11] : 10:10.554–10:36.576  During this time, MOJO 69 flew backwards for approximately 20 seconds before CW4 Griffin announced he was "coming back to the right ... pulling back to the East", [11] : 10:22.056  not realizing he had instead turned to the north. [1] : 14  As MOJO 69 continued backwards, it turned right about the yaw axis and took a nose-up pitch attitude of 20 degrees. [1] : 14 

Approximately 56 seconds after the first signs of spatial disorientation, CW4 Strother announced "we climbed up in it" and asked "where's our airspeed?" [1] : 14   [11] : 10:56.316, 10:59.142  Both pilots showed "increasingly erratic flight control inputs" and had "anxious verbal exchanges" at this point: [1] : 4  CW4 Griffin commanded rapid climb and descent maneuvers and put the aircraft into a spin. [1] : 14  CW4 Strother asked "G-Wayne, what are you doin'?" [11] : 11:03.980  and asked him to climb; [11] : 11:06.544  CW4 Griffin responded that he was "climbin' up" after approximately twenty seconds [11] : 11:26.780  and CW4 Strother warned him about the spin five seconds after that. [11] : 11:31.844 

Approximately 96 seconds after first showing spatial disorientation, CW4 Griffin asked CW4 Strother to take the controls, [1] : 14   [11] : 11:36.520  but both pilots were unable to regain control of the aircraft. [1] : 4  CW4 Griffin warned CW4 Strother to "watch the collective" twice [11] : 11:41.561, 11:44.067  and took the controls back 8 seconds after relinquishing them to CW4 Strother. [1] : 4  CW4 Strother suggested engaging the autopilot, [11] : 11:46.436  but this was not successful as the aircraft was already "outside the required flight parameters", [1] : 4   [8] and CW4 Strother first warned CW4 Griffin they were "in a bad right turn", [11] : 11:49.653  then to "watch your altitude, attitude G-Wayne attitude, level" in quick succession. [11] : 11:55.557 

The last recorded cockpit voice transmission was CW4 Strother urging "climb, climb". [11] : 12:00.695  MOJO 69 crashed into Santa Rosa Sound, [1] : 14  approximately 125 seconds after entering the fog. [1] : 4  Both the speed and angle of impact were not survivable. [1] : 14 

Adjutant general of the Louisiana National Guard, Maj Gen Glenn Curtis briefs the media about the accident on March 11, 2015 (photo by MSgt Toby Valadie) La. National Guard audio, quotes from press conference 150311-Z-VU198-001.jpg
Adjutant general of the Louisiana National Guard, Maj Gen Glenn Curtis briefs the media about the accident on March 11, 2015 (photo by MSgt Toby Valadie)

Debris from the crash was found on March 11 at 2 AM around Okaloosa Island. [4] The search for the passengers, which focused on waters east of Navarre, Florida, [4] was hindered by heavy fog in the area. [5] On the morning of March 11, a spokesman for the Eglin Air Force Base said that human remains had been found in the area of the search. [12] The wreckage was later found in 25 feet (7.6 m) of water off the coast of Navarre. [7]

By March 12, the bodies of two soldiers on board the helicopter had been recovered, [13] and by March 17, all 11 bodies from the crash had been recovered and identified. [14]

Investigation

A later investigation conducted by LAARNG and USSOC concluded that the cause of the crash was spatial disorientation, resulting in the pilots crashing into the Santa Rosa Sound. [15] Contributing causes included the pilots' choice to fly in weather and visibility that did not meet minimum requirements and a breakdown in aircrew communication, both before and during the mission. [1] : 15, 16 

CW4 Griffin had been briefed on March 7 that operations with night vision goggles could be conducted under visual meteorological conditions (VMC) only, establishing minimum requirements for the cloud ceiling [1,000 feet (300 m)] and visibility [3 miles (5 km)]; these requirements were subsequently included and acknowledged on all mission briefing sheets. [1] : 3  Contrary to these VMC minima requirements, both helicopters took off in conditions with low clouds and poor visibility; [1] : 3  Hurlburt Field, which was the closest weather facility to the accident site, was showing visibility of 1 mile (1.6 km) and a cloud ceiling of 300 feet (91 m) at 1958 and 2058 CST that night. [1] : 11  In addition, prior to takeoff, an observer at the drop zone called Hurlburt Field to receive a weather report at 1926 CST, concerned that he could not see the lights of the 300 feet (91 m) tall control tower, which was approximately 2.3 miles (3.7 km) from his position. The observer voiced his concerns about the visibility by telephone to Master Sergeant (MSgt) Thomas Saunders, one of the Marines assigned to fly on MOJO 69 that night. CW4 Griffin stated he was unconcerned, as his flight path would keep him away from the tower and that he had the required ceilings to fly the mission. [1] : 12 

CW4 Strother and the rest of the MOJO 69 aircrew did not challenge CW4 Griffin's decision to proceed with the mission in the face of deteriorating weather, because of their confidence in CW4 Griffin's judgment and piloting skill. This occurred despite individuals exhibiting trepidation about "the weather and the lack of ambient illumination". In addition, once CW4 Griffin began exhibiting spatial disorientation, the transfer of controls and assistance with interpreting flight instruments "were not adequately executed" and the two pilots were unable to assist each other to flight under instrument meteorological conditions effectively. [1] : 16–17 

Memorials

A year after the crash, friends and families of the crash victims participated in the Marine Raider Memorial March, carrying heavy rucksacks over a 770-mile long (1,240 km) course from Florida to North Carolina. Seven teams of two or three people participated; each team marched over a 11-mile (18 km) segment before being relieved by another team for the next segment, with the march scheduled to complete on March 21. [16] The marchers bore a paddle recovered from the wreck and upon arriving at Camp Lejune, presented it to the commanding officer of the 2nd Marine Raider Battalion. [17] A documentary film covering the march was released in October. [18]

A memorial sculpture was unveiled in Navarre Park in November 2016, with the names of the 11 servicemen engraved. The memorial, which was designed by local artist Randy New and built by Corey Swindle in Alabama, was organized by a group of 35 community leaders. [19] [20] [21] The memorial is the destination of the annual Rucking for Raiders march from Auburn University; the 210-mile (340 km) march started in 2017 to honor Raider Team 8231. [22] [23]

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References

  1. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 "Joint SOCOM and LAARNG Investigation: UH 60M (Model Tail Number 13-20624) Accident on 10 March 2015 Resulting in Fatalities" (PDF). Department of the Army, Joint Investigation Team: Louisiana Army National Guard | United States Special Operations Command. March 30, 2015. Retrieved March 1, 2021.
  2. ↑ Approximate times of communications, flight data parameters, and flight track (PDF) (Report). United States Special Operations Command. 2015.
  3. ↑ Botelho, Greg (March 11, 2015). "U.S. military helicopter crashes off northwest Florida; human remains found". CNN. Retrieved March 11, 2015.
  4. 1 2 3 Botelho, Greg (March 11, 2015). "U.S. military helicopter crashes off northwest Florida". CNN. Retrieved March 11, 2015.
  5. 1 2 3 "Eleven missing after US army helicopter crash in Florida". BBC. March 11, 2015. Retrieved March 11, 2015.
  6. 1 2 "Crash Victims Include Decorated Marine". The New York Times. March 14, 2015. Retrieved February 28, 2021.
  7. 1 2 "Hope of Finding Survivors in Army Helicopter Crash Fades". The New York Times. March 12, 2015.
  8. 1 2 3 4 Lilley, Kevin (November 1, 2015). "Black Hawk tragedy: Orders were ignored and 11 men died". Marine Corps Times. Retrieved March 1, 2021.
  9. ↑ "Louisiana National Guard helicopter accident" (Press release). Louisiana National Guard. March 2015. Retrieved March 1, 2021.
  10. ↑ 15-6 Maintenance Investigation Narrative (PDF) (Report). United States Special Operations Command. March 2015. Retrieved March 1, 2021.
  11. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Audio Transcription for Investigation of the 10 March 2015, Class A Accident, UH-60M, 13-20624, Case No. 20150310_2022_13-20624 (PDF) (Report). United States Special Operations Command. 2015. Retrieved March 1, 2021.
  12. ↑ Phillip, Abby (March 11, 2015). "Human remains found in search for 11 service members involved in helicopter crash". Washington Post. Retrieved March 11, 2015.
  13. ↑ Robinson, Kevin (March 12, 2015). "At least 2 bodies recovered from helicopter crash". USA Today. Retrieved March 12, 2015.
  14. ↑ Robinson, Kevin (March 17, 2015). "Last of soldiers killed in crash recovered". Pensacola News Journal . Retrieved March 22, 2015.
  15. ↑ "Reports: Cause of Black Hawk crash released". Pensacola News-Journal. June 3, 2015. Retrieved February 28, 2021.
  16. ↑ Lamothe, Dan (March 14, 2016). "Pain on the open road: How elite Marine Raiders are remembering their fallen friends". The Washington Post. Retrieved March 1, 2021.
  17. ↑ Lee, Donovan (March 21, 2016). "Marine Raiders march 770 miles in remembrance". United States Marine Corps. Retrieved March 1, 2021.
  18. ↑ Marine Raider Memorial March at IMDb   OOjs UI icon edit-ltr-progressive.svg
  19. ↑ Robinson, Kevin (November 18, 2016). "Black Hawk memorial unveiled in Navarre". Pensacola News Journal. Retrieved March 1, 2021.
  20. ↑ Judnich, Tony (November 18, 2016). "Officials unveil Navarre Black Hawk Memorial". NWF Daily News. Retrieved March 1, 2021.
  21. ↑ "In Memory of UH-60M Crew "Mojo 69"". The Historical Marker Database. Retrieved March 1, 2021.
  22. ↑ "Auburn University Navy ROTC members march to honor fallen Marines" (Press release). Auburn University. May 8, 2017. Retrieved March 1, 2021.
  23. ↑ Thompson, Jim (May 10, 2019). "Rucking for Raiders honors fallen Marines". NWF Daily News. Retrieved March 1, 2021.

Investigation

Selected exhibits
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