ASN Wikibase Occurrence # 30471
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| Date: | Wednesday 14 July 1999 |
| Time: | 21:51 LT |
| Type: |  Hughes 269C |
| Owner/operator: | City Of Houston |
| Registration: | N7491F |
| MSN: | 350400 |
| Year of manufacture: | 1975 |
| Total airframe hrs: | 11393 hours |
| Engine model: | Lycoming HIO-360-D1A |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Houston Hobby Airport, TX -
 United States of America
|
| Phase: | Landing |
| Nature: | Training |
| Departure airport: | (KHOU) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
During a night instructional flight, the helicopter landed hard during a practice autorotation following a simulated engine failure during takeoff. The operator stated that the toe of the right landing gear skid sank into the ground, and the helicopter made a 90 degree turn. The main rotor blades made contact with and severed the tailboom of the helicopter. The operator reported that the maneuver was entered below the recommended airspeed of 60 knots, and consequently a high rate of sink developed during the landing flare, which the pilot receiving instruction was unable to arrest. No mechanical malfunction or failure was reported by either the pilot or the operator.
Probable Cause: The hard landing as a result of the flight instructor's failure to attain the proper airspeed before simulating an engine failure, which resulted in the development of a high sink rate. Factors were the night illumination and the soft ground.
Accident investigation:
 |
|
Sources:
NTSB FTW99TA190
FAA register: FAA register: 3. http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=7491F
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 27-Sep-2008 01:00 | ASN archive | Added |
| 28-Nov-2014 23:03 | Dr. John Smith | Updated [Time, Aircraft type, Total fatalities, Total occupants, Other fatalities, Location, Country, Phase, Nature, Departure airport, Destination airport, Source, Damage, Narrative] |
| 14-Dec-2017 08:43 | ASN Update Bot | Updated [Time, Cn, Departure airport, Destination airport, Source, Damage, Narrative] |
| 31-May-2023 05:19 | Ron Averes | Updated [[Time, Cn, Departure airport, Destination airport, Source, Damage, Narrative]] |
| 07-Apr-2024 19:11 | ASN Update Bot | Updated [Time, Operator, Other fatalities, Departure airport, Source, Narrative, Category, Accident report] |
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