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| 84-24156 |
| "The one the rolled inverted" |
| 84-24156, Boeing D model kit number M3060, was a CH-47D helicopter. The U.S. Army acceptance date was 27 February 1985. As of 27 February 2000, 84-24156 had accumulated 1,430.2 D model hours and 4,895.4 total aircraft hours. 84-24156 was a conversion from the original A model Chinook 64-13113. On 31 January 1984, 84-24156 was inducted into the D model program and assigned to an unknown unit. At some point, 84-24156 was delivered to Corpus Christi Army Depot (CCAD), Corpus Christi, Texas, for modification, and then assigned to the 160th Special Operations Aviation Regiment (SOAR) - "Nightstalkers", United States Army Special Operations Command (USASOC), Fort Campbell, Kentucky. At some point, 84-24156 was damaged during a ground run (details unknown) and sent to CCAD for repair. In 1989, 84-24156 was subsequently assigned to B Company - "Hercules", 2nd Battalion, 159th Aviation Regiment, Hunter Army Airfield, Savannah, Georgia, as a replacement for 85-24325, a B Company - "Hercules" helicopter that was lost due to a mid air collision with an AH-1 Cobra near Wright Army Airfield, Georgia, on 9 April 1986. B Company was the former 132nd Assault Support Helicopter Company (ASHC). The 132nd ASHC was redesignated B Company in approximately November 1988. In September 1996, 2nd Battalion was deactivated and the unit was redesignated B Company, 159th Aviation Regiment. B Company became a subordinate unit to the 18th Aviation Brigade. As of 5 March 2001, the 18th Aviation Brigade was located at Simmons Army Airfield, Fort Bragg, North Carolina, and was subordinate to the 18th Airborne Corps. The 18th Airborne Corps was subordinate to Forces Command (FORSCOM), which was a major command (MACOM) of 2nd Army. In 1990, 84-24156 was assigned to the 160th SOAR. On a ferry flight from CCAD, 84-24156 rolled inverted in flight and was severely damaged. At some point, 84-24156 was assigned to Aberdeen Proving Grounds (APG), Maryland, and utilized as a ballistic evaluation device. Tied to the ground, projectiles were fired at 84-24156 while it was running. On an unknown date, 85-24156 experienced ground resonance and disintegrated while tied to the ground at Aberdeen. As of 1 January 2001, this aircraft was 35.9 years old. As of 27 February 2000, the last known location of 84-24156 was at Aberdeen, Maryland. Aircraft status: Destroyed. |
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| Some of the crew working on 84-24156 at the Aberdeen Proving Grounds in Maryland, date unknown. Second from the right is Gerry Baker, a pilot on CH-47 helicopters. Kneeling is Niko Vandevoorhee, Flight Engineer. |
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| 84-24156 at Abeerdeen Proving Grounds in Maryland, date unknown. |
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| 84-24156 at Aberdeen Proving Grounds. This photograph shows how the aircraft was secured to the planet in preparation for the ground run tests, date unknown. |
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| 84-24156 at Aberdeen Proving Grounds secured to the ground ready for testing. |
| Ground Resonance |
| One of the disadvantages of a fully articulated rotor system, such as that found on the CH-47 Chinook helicopter, is the susceptibility to ground resonance. Items to consider in limiting the chances of encountering ground resonance include ensuring that all tires are inflated to 88 psi and all landing gear struts and blade dampeners are properly serviced. The two videos below show the result of Chinook helicopter 84-24156 falling victim to ground resonance (date unknown). Click-N-Go on the link below to view the videos, or right click and select "Save Target As" to download the files to your computer. |
| Ground Resonance | Side View (11.5 Mb.) |
| Ground Resonance | Rear View (13.2 Mb.) |
| This aircraft was piloted by: |
| Your Name Here. |
| This aircraft was crewed by: |
| SPC Jim (Frog) Wallingford, Crew Chief, 1987 - 1988 |
| Your Name Here. |
| Related Information |
| Final Descents |
| A Flight Fax article concerning the roll incident |
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