ASN Wikibase Occurrence # 371978
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| Date: | Sunday 25 October 1987 |
| Time: | 17:25 LT |
| Type: |  Enstrom F-28C |
| Owner/operator: | Copters Unlimited, Inc. |
| Registration: | N51699 |
| MSN: | 416 |
| Year of manufacture: | 1977 |
| Total airframe hrs: | 2753 hours |
| Engine model: | LYCOMING HIO-360-E1AD |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Laconia, NH -
 United States of America
|
| Phase: | Landing |
| Nature: | Private |
| Departure airport: | (KLCI) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PLT RPRTD HE WAS DEMONSTRATING A FULL TOUCHDOWN AUTOROTATION IN WINDS THAT WERE FROM 290 DEG AT 15 GUSTING 20 KTS. HE STATED THE TOUCHDOWN WAS SOFT WITH A LOT OF PITCH PULLED IN; HOWEVER, AS HE LOWERED THE COLLECTIVE AFTER TOUCHDOWN, THE RETREATING BLADE FLEXED DOWNWARD & SEVERED THE AFT PORTION OF THE TAIL BOOM & THE TAIL ROTOR DRIVE SHAFT. THE PLT BELIEVED HE HAD LOWERED THE COLLECTIVE TOO FAST AFTER TOUCHDOWN, WHICH WOULD HAVE ALLOWED THE BLADES TO FLAP DOWNWARD. ALSO, HE BELIEVED THE HIGH WIND & REDUCED RPM FROM THE AUTOROTATION WOULD HAVE ATTRIBUTED TO EXCESSIVE FLAPPING OF THE RETREATING ROTOR BLADES.
Probable Cause:
Accident investigation:
 |
|
Sources:
NTSB NYC88LA018
History of this aircraft
Other occurrences involving this aircraft
| 20 July 2003 | N51699 | P And N Corp | 0 | Waverly, Iowa | |
sub |
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 26-Mar-2024 12:09 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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