ASN Wikibase Occurrence # 30045
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: | Tuesday 29 August 2000 |
| Time: | 15:35 |
| Type: |  Bell 206L-1 LongRanger II |
| Owner/operator: | Los Angeles Co Sheriff's Department |
| Registration: | N5758H |
| MSN: | 45570 |
| Year of manufacture: | 1980 |
| Total airframe hrs: | 3317 hours |
| Engine model: | Allison 250-C30P |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | LAPD HQ Helipad, Los Angeles, CA -
 United States of America
|
| Phase: | Take off |
| Nature: | Unknown |
| Departure airport: | |
| Long Beach, CA (LGB) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
During takeoff from a heliport atop a 10-story parking structure, the pilot heard a 'loud pop or snapping sound' as the helicopter transitioned to forward flight and then sensed a main rotor imbalance and vibration. The pilot returned to the heliport and landed on the skids, however, the helicopter subsequently rolled over and came to rest on its left side. Subsequent examination of the helicopter showed the skid cross tubes were displaced approximately 2 inches to the right in their fuselage attachment bushings and the main rotor transmission was inclined approximately 20 degrees to the right and 10 degrees forward. Examination and testing of the hydraulic pump, three flight control servos and two hydraulic filters revealed no anomalies. The tip of one main rotor blade and part of one pitch change link were not located after the accident. The mating end of the pitch change link exhibited bending along its length and crippling at the separation point consistent with overload failure.
Probable Cause: The probable loss of the main rotor tip weight on the red blade for undetermined reasons resulting in main rotor vibration and oscillation. Sideward movement during the ensuing emergency landing resulted in a dynamic rollover.
Accident investigation:
 |
|
Sources:
NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20001212X21792&key=1
FAA register: 2. FAA: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=5758H
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 27-Sep-2008 01:00 | ASN archive | Added |
| 13-Apr-2015 20:09 | Dr. John Smith | Updated [Time, Cn, Total fatalities, Total occupants, Other fatalities, Location, Country, Phase, Nature, Departure airport, Destination airport, Source, Damage, Narrative] |
| 13-Apr-2015 20:10 | Dr. John Smith | Updated [Departure airport] |
| 21-Dec-2016 19:16 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 21-Dec-2016 19:20 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 12-Dec-2017 19:05 | ASN Update Bot | Updated [Operator, Nature, Departure airport, Destination airport, Source, Narrative] |
| 30-May-2023 01:27 | Ron Averes | Updated [[Operator, 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