ASN Wikibase Occurrence # 150939
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| Date: | Friday 19 August 1994 |
| Time: | 16:20 LT |
| Type: |  Bell 230 |
| Owner/operator: | Mayo Medical Center |
| Registration: | N230EM |
| MSN: | 23011 |
| Year of manufacture: | 1993 |
| Total airframe hrs: | 536 hours |
| Engine model: | ALLISON 250-C30G/2 |
| Fatalities: | Fatalities: 0 / Occupants: 4 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Albert Lea Municipal Airport, MN -
 United States of America
|
| Phase: | Approach |
| Nature: | Unknown |
| Departure airport: | Rochester, MN (KRST) |
| (KAEL) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PILOT OF A MEDICAL EVACUATION HELICOPTER WAS MANEUVERING THE HELICOPTER TO LAND ON THE AIRPORT RAMP TO PICK UP A PATIENT FROM THE AWAITING AMBULANCE. IN ORDER TO AVOID OVERFLYING TREES, A HANGAR, AND AN UNTIED AIRPLANE, THE PILOT EXECUTED A STEEP APPROACH AT LOW AIRSPEED WHILE SIDE SLIPPING THE HELICOPTER TO MAINTAIN ALIGNMENT ON A TRACK OF 175 DEGREES. WHEN THE PILOT BEGAN TO ADJUST THE COLLECTIVE TO ARREST HIS RATE OF DESCENT, AND SLOW HIS RATE OF CLOSURE, THE RPM DROPPED AND THE AIRCRAFT MADE AN UNUSUAL NOISE ACCOMPANIED WITH AIRFRAME SHUTTERING. THE PILOT REDUCED COLLECTIVE PITCH AND LOWERED THE NOSE IN AN ATTEMPT TO EXECUTE A RUNNING LANDING TO A GRASS AREA ADJACENT TO THE INTENDED LANDING AREA. THE HELICOPTER LANDED HARD AND BOUNCED TWICE. THE LEFT LANDING GEAR CROSSTUBE COLLAPSED WHEN THE HELICOPTER CONTACTED THE SHOULDER OF THE TAXIWAY. A POST-IMPACT FIRE STARTED WITHIN 2 MINUTES, CONSUMING THE TOP OF THE CABIN. THE WINDS AT THE TIME OF THE ACCIDENT WERE FROM 310 DEGREES AT 15 KNOTS, GUSTING TO 20. EXAMINATION OF THE HELICOPTER AND ENGINES DID NOT DISCLOSE ANY MECHANICAL ANOMALIES.
Probable Cause: THE PILOT'S FAILURE TO EXECUTE THE PROPER APPROACH AND THE ENSUING SETTLING WITH POWER. FACTORS WERE THE TAILWIND, AND THE CONGESTION AROUND THE AIRPORT.
Accident investigation:
 |
|
Sources:
NTSB FTW94FA274
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 30-Nov-2012 05:55 | TB | Added |
| 21-Dec-2016 19:28 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 09-Apr-2024 19:43 | ASN Update Bot | Updated [Time, Operator, Other fatalities, Phase, Nature, Departure airport, Destination airport, Source, Narrative, Category, Accident report] |
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