ASN Wikibase Occurrence # 294674
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| Date: | Monday 9 August 2004 |
| Time: | 17:00 LT |
| Type: |  Eurocopter EC 130B4 |
| Owner/operator: | Air Methods |
| Registration: | N910U |
| MSN: | 3470 |
| Year of manufacture: | 2001 |
| Total airframe hrs: | 85 hours |
| Engine model: | Turbomeca Arriel 2B1 |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Englewood, Colorado -
 United States of America
|
| Phase: | Unknown |
| Nature: | Test |
| Departure airport: | Denver-Centennial Airport, CO (APA/KAPA) |
| Denver-Centennial Airport, CO (APA/KAPA) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
According to the pilot, the helicopter had just undergone maintenance and was preparing for a second test flight. The helicopter had departed approximately 15 minutes prior to the accident and returned due to an inoperative horizontal situation indicator. A thorough preflight had been conducted for the first test flight. While the HSI was being repaired, another maintenance technician opened the transmission cowling. The pilot and two avionics technicians boarded the helicopter from the left side, without performing an additional preflight or walk around. The pilot performed a run-up and lifted the helicopter to a hover when an individual on the ground noticed that the cowling was open. The lead mechanic then signaled to the pilot for him to land. As the helicopter set back down, the transmission cowling detached and impacted a main rotor blade and the tail boom, causing substantial damage.
Probable Cause: the pilot's failure to perform a preflight inspection. Contributing to the accident was the transmission cowling that disconnected during the landing.
Accident investigation:
 |
|
Sources:
NTSB DEN04CA122
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 12-Oct-2022 07:49 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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