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ASN Wikibase Occurrence # 37342
Last updated: 25 November 2021
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Date:20-JAN-1987
Time:12:28
Type:Beechcraft U-21A Ute
Owner/operator:United States Army Aviation
Registration: 67-18061
MSN: LM-62
Fatalities:Fatalities: 3 / Occupants: 3
Other fatalities:3
Aircraft damage: Written off (damaged beyond repair)
Category:Accident
Location:Independence, MO -   United States of America
Phase: En route
Nature:Military
Departure airport:Anniston, AL (ANB)
Destination airport:Ft. Leavenworth, KS (FLV)
Investigating agency: NTSB
Narrative:
About 12:28 central standard time, a US Army Beech U-21A airplane, (67-18061), and a Sachs Electric Company Piper PA-31-350, N60SE, collided at 7000 feet msl over the Lake City Army Ammunition Plant, Independence, Missouri, about 5 miles east of the eastern boundary of the Kansas City Terminal Control Area. The U-21 was level at 7000 feet and en route to Fort Leavenworth, Kansas, in accordance with instrument flight rules. The PA-31 was climbing eastbound to an unknown cruise altitude, having departed the Kansas City Downtown Airport in accordance with visual flight rules, en route to Saint Louis, Missouri. The airplanes collided nearly head-on in daylight and visual meteorological conditions. Although both airplanes were equipped with operating mode-C transponders, the radar controllers in communication with the U-21 did not observe and were not alerted to the conflict.
Therefore, traffic advisories were not provided. As a result of the accident, two pilots and one passenger aboard the U-21 and the pilot and two passengers aboard the PA-31 were fatally injured. Both airplanes were destroyed.

The National Transportation Safety Board determines that the probable cause of the accident was the failure of the radar controllers to detect the conflict and to issue traffic advisories or a safety alert to the flightcrew of the U-21; deficiencies of the see and avoid concept as a primary means of collision avoidance; and the lack of automated redundancy in the air traffic control system to provide conflict detection between participating and nonparticipating aircraft.

Sources:

https://www.ntsb.gov/aviationquery/brief.aspx?ev_id=20001213X30061&key=1
http://www.armyaircrews.com/fixed.html

Accident investigation:
cover
  
Investigating agency: NTSB
Status: Investigation completed
Duration:
Download report: Final report


Images:


Revision history:

Date/timeContributorUpdates
24-Oct-2008 10:30 ASN archive Added
04-Aug-2014 16:23 TB Updated [Aircraft type, Registration, Operator, Total fatalities, Total occupants, Other fatalities, Nature, Source, Narrative]
15-Feb-2020 18:12 harro Updated [Narrative, Photo, Accident report, ]

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