ASN Wikibase Occurrence # 36063
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| Date: | Thursday 1 December 1994 |
| Time: | 12:07 LT |
| Type: |  Agusta A109A Mk II |
| Owner/operator: | Metro Aviation, Inc. |
| Registration: | N1QF |
| MSN: | 7311 |
| Year of manufacture: | 1984 |
| Total airframe hrs: | 1890 hours |
| Engine model: | ALLISON 250-C20B |
| Fatalities: | Fatalities: 3 / Occupants: 3 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Ann Arbor, MI -
 United States of America
|
| Phase: | En route |
| Nature: | Ferry/positioning |
| Departure airport: | , MI (NONE) |
| Howell, MI (NONE) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE FLIGHT HAD BEEN AIRBORNE FOR TWO MINUTES WHEN THE PILOT REQUESTED LANDING PERMISSION STATING, IN PART, 'I'D LIKE TO PROCEED INBOUND...SINGLE ENGINE LANDING, PLEASE.' HE CANCELLED THIS REQUEST IMMEDIATELY AND REPORTED '...I'M GOING DOWN AT THIS TIME.' HE THEN CONTACTED THE DISPATCH WHERE HE HAD DEPARTED AND REPORTED THE POSITION OF HIS INTENDED LANDING. AFTER THIS RADIO CALL, 23 TO 25 SECONDS PASSED BEFORE HIS LAST COMMUNICATION INDICATING AN IMMINENT CRASH. WITNESSES REPORTED THAT THE HELICOPTER WAS NEARLY SILENT JUST PRIOR TO GROUND IMPACT AND THAT THERE WAS NO ENGINE NOISE AT ALL AFTER IMPACT. SUBSEQUENT INVESTIGATION REVEALED THAT NEITHER ENGINE WAS OPERATING AT THE TIME OF THE ACCIDENT; HOWEVER, NO MECHANICAL REASON FOR THE LOSS OF ENGINE POWER OR NECESSITY FOR AN ENGINE SHUTDOWN BY THE PILOT WAS DETERMINED. DAMAGE TO THE ROTOR SYSTEM INDICATED THAT RPM WAS EXTREMELY LOW AT THE TIME OF IMPACT.
Probable Cause: the pilot's failure to obtain/maintain a successful autorotation. Factors were: a loss of engine power of one engine for undetermined reasons, and the pilot's shutdown of the wrong engine.
Accident investigation:
 |
|
Sources:
NTSB CHI95FA050
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 27-Jan-2010 10:13 | Alpine Flight | Updated [Aircraft type, Other fatalities] |
| 21-Dec-2016 19:22 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 09-Apr-2024 18:02 | ASN Update Bot | Updated [Time, Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative, Category, Accident report] |
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