ASN Wikibase Occurrence # 157398
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| Date: | Monday 13 December 1999 |
| Time: | 15:35 LT |
| Type: |  Hughes 269C |
| Owner/operator: | Bbi Inc. |
| Registration: | N58408 |
| MSN: | 1090837 |
| Total airframe hrs: | 1458 hours |
| Engine model: | Lycoming HIO-360-D1A |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | 4 miles S of Salina Municipal Airport, Salina, KS -
 United States of America
|
| Phase: | Landing |
| Nature: | Unknown |
| Departure airport: | (KSLN) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot was performing a practice autorotation. He stated that he began the practice autorotation by '...lowering the collective all the way and reducing the throttle setting to a point where the engine RPM and rotor RPM needles split. I verified that the needles split, but something didn't feel normal.' The pilot elected to abandon the maneuver and added power to recover. The pilot stated: 'As best I can remember, the engine and rotor RPM needles had syncronized [sic] and were at approximately the right clock position on the tach face.' The pilot said that at this time he was '...becoming aware of an extremely high descent rate.' The pilot flight manual for the aircraft describes the procedure for practice autorotation as follows: 'Split the needles by lowering the collective while maintaining throttle setting. The throttle correlation will establish a high idle rpm (approximately 2000 rpm) which will aid in preventing the engine from loading up or stalling during recovery. No apparent preexisting anomalies were detected with respect to the aircraft or systems. The pilot listed no mechanical malfunction in his written report.
Probable Cause: The pilot's failure to follow the published practice autorotation procedures, the improper use of throttle, and the inadequate flare.
Accident investigation:
 |
|
Sources:
NTSB CHI00LA044
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 02-Jul-2013 02:42 | JINX | Added |
| 21-Dec-2016 19:28 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 14-Dec-2017 09:59 | ASN Update Bot | Updated [Operator, Nature, Departure airport, Destination airport, Source, Narrative] |
| 07-Apr-2024 16:17 | ASN Update Bot | Updated [Time, Other fatalities, Phase, Departure airport, Source, Narrative, Category, Accident report] |
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