ASN Wikibase Occurrence # 185153
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| Date: | Friday 27 September 1991 |
| Time: | |
| Type: |  Mitsubishi MU-2B-60 Marquise |
| Owner/operator: | Air 500 Ltd |
| Registration: | C-FFSS |
| MSN: | 783SA |
| Year of manufacture: | 1980 |
| Total airframe hrs: | 4756 hours |
| Engine model: | GARRETT TPE331-10511M |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | near Utica County Airport, Whitestown, Oneida County, New York -
 United States of America
|
| Phase: | Initial climb |
| Nature: | Cargo |
| Departure airport: | Oneida County Airport, Whitestown, Oneida County, New York (UCA/KUCA) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
During the climb, one of the four propeller blades on the No.2 engine separated from the propeller hub, damaging another propeller blade and the fuselage. Shortly thereafter, the engine shut down. The rotational unbalance was accompanied by extreme vibration and resulted in distortion and damage to the engine/cowl assembly and the wing.
The upper portion of the engine cowl was deflected upward over the wing at an angle of about 30 degrees, resulting in distortion of airflow, buffeting and degradation of roll control. Due to excessive drag, maximum power was required on the No.1 engine in order to control the rate of descent and land successfully. A metallurgical examination disclosed evidence of fatigue cracking of the propeller hub arm.
The NTSB determined the probable cause to be: Fatigue cracking of the propeller hub. The two persons board (pilot and co-pilot) were uninjured. Aircraft repaired and returned to service
Accident investigation:
 |
|
Sources:
1. NTSB Identification: NYC91LA250 at https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20001212X18180&key=1_
2. NTSB Safety Recommendation A-92-081: https://www.ntsb.gov/_layouts/ntsb.recsearch/Recommendation.aspx?Rec=A-92-081
3. http://www.aircraftdomain.com/tail-number/cffss.html
4. http://rzjets.net/aircraft/?page=13&typeid=247
Media:
%2C_Air_500_AN0145743.jpg)
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 05-Mar-2016 01:23 | Dr.John Smith | Added |
| 07-Dec-2016 22:01 | wf | Updated [Aircraft type] |
Corrections or additions? ... Edit this accident description
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