ASN Wikibase Occurrence # 163623
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information.
If you feel this information is incomplete or incorrect, you can submit corrected information.
| Date: | Wednesday 29 January 2014 |
| Time: | 14:32 |
| Type: |  Diamond DA20-C1 Eclipse |
| Owner/operator: | Doss Aviation Inc |
| Registration: | N959DA |
| MSN: | C0469 |
| Year of manufacture: | 2007 |
| Total airframe hrs: | 3597 hours |
| Engine model: | Continental IO240B3B |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Butts Army Airfield, Fort Carson, CO -
 United States of America
|
| Phase: | Take off |
| Nature: | Unknown |
| Departure airport: | Colorado Springs-Butts AAF, CO (FCS/KFCS) |
| Pueblo Memorial Airport, CO (PUB/KPUB) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
**This report was modified on 1/22/2015. Please see the public docket for this accident to view the original report.**
According to air traffic control (ATC) audio recordings, a tower controller cleared an airplane for takeoff about 23 seconds after a UH-60 helicopter was cleared for takeoff from a midfield location. The tower controller ensured that a runway separation standard of 3,000 feet was present and did not give a wake turbulence advisory. The flight instructor reported that she was aware of the helicopter's takeoff and that she perceived adequate separation from the helicopter. The flight instructor incorrectly identified the helicopter as a Bell UH-1, which weighs less than the UH-60. Shortly after takeoff, the airplane encountered the wake vortex of the helicopter and entered a steep left bank. The flight instructor attempted to counteract the left roll with full right aileron inputs, but she was unable to maintain control. The airplane impacted terrain near midfield and came to rest inverted. A review of ATC audio recordings and airplane performance data revealed that the airplane trailed the helicopter by about 48 to 63 seconds at the midfield location and was about 150 to 200 feet above ground level when it encountered the helicopter's wake vortex.
Current Federal Aviation Administration (FAA) ATC guidance does not require specific wake turbulence separation criteria for a small airplane following a helicopter nor does it require a controller to give a wake turbulence advisory for a small airplane following a helicopter. Current FAA pilot guidance, including the Airman's Information Manual and an advisory circular on aircraft wake turbulence, also do not recommend separation criteria for a small airplane following a helicopter.
Probable Cause: The flight instructor's loss of control after takeoff following a wake turbulence encounter from a preceding helicopter. Contributing to the accident were the flight instructor's misidentification of the helicopter type and a lack of Federal Aviation Administration wake turbulence separation criteria for a small airplane following a helicopter.
Accident investigation:
 |
|
Sources:
NTSB
FAA register: http://registry.faa.gov/AircraftInquiry/NNum_results.aspx?NNumbertxt=959DA
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 30-Jan-2014 03:40 | Geno | Added |
| 30-Jan-2014 23:10 | Geno | Updated [Registration, Cn, Phase, Destination airport, Source, Damage, Narrative] |
| 07-Feb-2014 23:06 | Geno | Updated [Phase, Departure airport, Destination airport, Source, Narrative] |
| 21-Dec-2016 19:28 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 29-Nov-2017 13:21 | ASN Update Bot | Updated [Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative] |
| 22-Sep-2023 08:16 | Ron Averes | Updated [[Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative]] |
Corrections or additions? ... Edit this accident description
The Aviation Safety Network is an exclusive service provided by:
Quick Links:
| ASN Home | Send Correction / Feedback |
| FSF Home | Disclaimer | Copyright |
| Contact Us | Privacy Policy |
| Press / Media |
CONNECT WITH US:
©2024 Flight Safety Foundation