ASN Wikibase Occurrence # 379269
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: | Monday 11 June 1984 |
| Time: | 07:00 LT |
| Type: |  Hiller UH-12E |
| Owner/operator: | Hoffman Pilot Center, Inc. |
| Registration: | N504HA |
| MSN: | |
| Total airframe hrs: | 1700 hours |
| Engine model: | Lycoming VO-540-C2A |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Granby, CO -
 United States of America
|
| Phase: | Approach |
| Nature: | Unknown |
| Departure airport: | Granby, CO |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE HELICOPTER PLT WAS ON A RECONNAISSANCE FLT TO SURVEY A HILLTOP LANDING SITE IN MOUNTAINOUS TERRAIN. WHEN HE ARRIVED, HE MADE A HIGH RECONNAISSANCE PASS, THEN BEGAN A LOW RECONNAISSANCE APCH. HE ESTIMATED THE WIND WAS FROM 210 DEG AT 10 TO 15 KTS WITH LIGHT TURBULENCE. HIS APCH WAS MADE ON A HEADING OF 200 DEG. HE BEGAN HIS APCH AT APRX 40 KTS & WITH A DESCENT RATE OF 200 FT/MIN. WHEN THE HELICOPTER WAS ABOUT 150 FT FROM THE HILLTOP & APRX 50 FT ABOVE IT, THE AIRSPEED DROPPED TO ZERO & THE RATE OF DESCENT INCREASED. THE PLT APPLIED FULL POWER & TURNED DOWN A VALLEY TO THE RIGHT, BUT COULD NOT STOP THE DESCENT. THE HELICOPTER THEN HIT A TREE, TOUCHED DOWN ON SLOPING TERRAIN & ROLLED OVER. THE ELEVATION & DENSITY ALT WERE ABOUT 9200 & 10,040 FT, RESPECTIVELY. THE HELICOPTER'S HOVER CEILING OUT OF GROUND EFFECT WAS ABOUT 8500 FT; IN GROUND EFFECT, THE HOVER CEILING WAS APRX 11,800 FT.
Probable Cause:
Accident investigation:
 |
|
Sources:
NTSB DEN84LA177
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 31-Mar-2024 17:33 | ASN Update Bot | 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