ASN Wikibase Occurrence # 214860
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: | Friday 26 September 2014 |
| Time: | 07:45 |
| Type: |  Robinson R22 Beta |
| Owner/operator: | Vertical Limit Aviation |
| Registration: | N7026J |
| MSN: | 2856 |
| Year of manufacture: | 1998 |
| Engine model: | Lycoming O-360-J2A |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Destroyed |
| Location: | near Double Eagle II Airport, Albuquerque, New Mexico -
 United States of America
|
| Phase: | Landing |
| Nature: | Private |
| Departure airport: | Double Eagle II Airport, Albuquerque, New Mexico (AEG/KAEG) |
| Double Eagle II Airport, Albuquerque, New Mexico (AEG/KAEG) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
On September 26, 2014, about 07:45 MDT (Mountain Daylight Time), a Robinson R22 Beta helicopter, N7026J, sustained substantial damage when it impacted the ground and rolled over during landing. The pilot was not injured and the passenger received minor injuries. The aircraft was registered to Redhills Corp and operated by Vertical Limit Aviation, LLC., under the provisions of 14 Code of Federal Regulations Part 91 as personal flight. Visual meteorological conditions prevailed for the flight, which was not on a flight plan. The local flight originated from the Double Eagle II Airport, Albuquerque, New Mexico, about 20 minutes prior to the accident.
The pilot reported that he was making a second practice approach to a pinnacle in the helicopter when the mishap occurred. The helicopter was slowing gradually and when it was about 15 feet above the ground and 20- 25 knots forward speed, the low rotor RPM horn sounded. The pilot attempted lowering collective and pulling "gentle" aft cyclic to increase rotor RPM and turned to egress the area. The helicopter continued to descend and the pilot executed an auto rotation. During the landing, the left skid struck a hill and the helicopter rolled over on its side. The pilot did not report any mechanical anomalies with regard to the operation of the helicopter.
According to the pilot's statement, before the flight he had asked that the auxiliary fuel tank be filled, but line service personnel instead filled the main fuel tank. Upon initiating the flight, the pilot noted that the helicopter was "heavy".
According to the Federal Aviation Administration Rotorcraft Flying Handbook, FAA-H-8083, certain conditions of high weight, high temperature, or high density altitude, can result in a situation where rotor RPM is low even when using maximum throttle. It further stated that this usually results from the main rotor blades having an angle of attack that has created so much drag that engine power is not sufficient to maintain or attain normal operating RPM.
According to Google Earth and the accident location provided by the pilot, the ground elevation was determined to be about 5,900 feet above mean sea level. The density altitude was calculated to be about 7,000 feet, based on this elevation and the weather conditions reported at the departure airport. A post-accident examination of the helicopter did not reveal any pre-impact anomalies.
The National Transportation Safety Board determines the probable cause(s) of this accident as follows: The pilot's failure to maintain main rotor rpm during a pinnacle approach, which resulted in a loss of helicopter control and collision with terrain. Contributing to the accident was the pilot's decision to attempt the approach given the helicopter's weight and the high-density altitude.
Helicopter presumably written off (damaged beyond repair) as the registration N70126J was cancelled by the FAA on December 9, 2014
Accident investigation:
 |
|
Sources:
NTSB
2. FAA Registration: https://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=N7026J
3. http://helihub.com/2014/09/26/26-sep-14-n7026j-robinson-r22-albuquerque-us-new-mexico/
4. https://en.wikipedia.org/wiki/Double_Eagle_II_Airport
Location
Media:
Robinson R22 Beta N7026J on a training flight 23 December 2011 at Las Vegas, Nevada
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 30-Aug-2018 22:30 | Dr.John Smith | Added |
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