Incident Saab 340A N146CA, Thursday 21 November 1991
ASN logo
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:Thursday 21 November 1991
Type:Silhouette image of generic SF34 model; specific model in this crash may look slightly different    
Saab 340A
Registration: N146CA
MSN: 340A-146
Total airframe hrs:6698 hours
Engine model:GE CT7-5A2
Fatalities:Fatalities: 0 / Occupants: 29
Other fatalities:0
Aircraft damage: Minor
Location:near Buffalo, NY -   United States of America
Phase: En route
Nature:Passenger - Scheduled
Departure airport:Cincinnati/Northern Kentucky Airport, KY (CVG/KCVG)
Destination airport:Toronto-Pearson International Airport, ON (YYZ/CYYZ)
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
The flight crew detected vibration coming from the right propeller and made a decision to shut the engine down. During the shutdown process the propeller separated from the airplane. Examination of both portions of the failed propeller shaft revealed the shaft failed due to fatigue. Metallurgical examination found a slag inclusion just below the fracture surface. This defect occurred during the melting of the original ingot.

A fatigue fracture on the propeller shaft, that originated at a subsurface slag inclusion, which remained in the material used to manufacture the shaft.

Accident investigation:
Investigating agency: NTSB
Report number: NYC92IA035
Status: Investigation completed
Download report: Final report


Revision history:

20-Jan-2018 18:55 harro Added
20-Jan-2018 18:56 harro Updated [Narrative]

Corrections or additions? ... Edit this accident description

The Aviation Safety Network is an exclusive service provided by:
Quick Links:

CONNECT WITH US: FSF on social media FSF Facebook FSF Twitter FSF Youtube FSF LinkedIn FSF Instagram

©2024 Flight Safety Foundation

1920 Ballenger Av, 4th Fl.
Alexandria, Virginia 22314