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ASN Wikibase Occurrence # 194591
Last updated: 29 October 2019
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Date:05-APR-2017
Time:c. 13:00 LT
Type:Silhouette image of generic H53 model; specific model in this crash may look slightly different
Sikorsky CH-53E Super Stallion
Owner/operator:US Marine Corps (USMC), 3rd Marine Aircraft Wing
Registration: YK-59/164358
C/n / msn:
Fatalities:Fatalities: 0 / Occupants: 5
Other fatalities:0
Aircraft damage: Substantial
Location:Barry M. Goldwater Range, Yuma, AZ -   United States of America
Phase: Manoeuvring (airshow, firefighting, ag.ops.)
Nature:Military
Departure airport:MCAS Yuma (KNYL)
Destination airport:MCAS Yuma (KNYL)
Narrative:
The helicopter experienced a hard landing during a Weapons and Tactics Instructor training exercise. The five crew members survived the crash.

The mishap took place as the Super Stallion attempted a hard right turn at just 50 feet off the ground.

"[The pilot] was at the controls and rolled into a 73-degree angle of bank right-hand turn and simultaneously lowered the collective by four to six inches and added right pedal," the investigation states. The aircraft initially climbed to 125 feet and then began to descend, unable to gain enough power to overcome the steep angle. The helicopter hit the ground, bounced, and then hit again, according to the investigation. When it finally came to rest, it was nearly upside-down.

"The investigation ... reveals a breakdown in mission planning that is underpinned by inadequate risk management, inattention to detail, lack of understanding of aircraft systems and aerodynamics, and violation of [Angle of Bank] limitations and [Training and Readiness] program manual hard deck altitude for defensive maneuvering," the commanding officer of Marine Aircraft Group 16, Col. Craig LeFlore, wrote in an endorsement of the investigation.

"These culminating factors set dangerous conditions wherein the pilots put the aircraft into a high AOB turn in a reduced energy state close to the ground, ultimately resulting in power required exceeding power available and an unrecoverable rate of descent," he continued.

Sources:

www.marinecorpstime.com
https://www.military.com/daily-news/2017/04/06/five-marines-walk-away-ch53-hard-landing-yuma.html
https://www.military.com/daily-news/2017/09/04/pilot-error-caused-super-stallion-rollover-investigation-shows.html
https://fightersweep.com/8633/pilot-error-determined-cause-ch-53e-super-stallion-hard-landing-yuma-az/


Revision history:

Date/timeContributorUpdates
06-Apr-2017 17:38 gerard57 Added
06-Apr-2017 18:22 Geno Updated [Phase, Departure airport, Destination airport, Source, Narrative]
09-Apr-2017 09:43 Aerossurance Updated [Time, Aircraft type, Operator, Location]
05-Sep-2017 18:47 Aerossurance Updated [Time, Departure airport, Destination airport, Source, Damage, Narrative]
13-Oct-2017 08:04 sinfu2a Updated [Registration, Source]
22-Jul-2018 16:26 Anon. Updated [Phase]

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