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Accident Report Detail

 
Safety Recommendation Report: Preventing Catastrophic Failure of Pratt & Whitney Canada JT15D-5 Engines Following Birdstrike or Foreign Object Ingestion

Executive Summary

‚ÄčThe National Transportation Safety Board (NTSB) is providing the following information to urge Transport Canada to take action on the safety recommendation in this report. This recommendation is intended to prevent catastrophic failure of Pratt & Whitney Canada (PWC) JT15D-5 engines installed on Beechcraft Beechjet 400A airplanes following a birdstrike or foreign object ingestion.1 It is derived from three NTSB investigations of incidents in which liberated fan blades breached engine cases and cowlings after bird species well below the weight required for certification testing were ingested. Subsequent testing and analysis identified a failure mode in the event of a birdstrike or foreign object ingestion at a certain engine speed. As a result of these investigations, the NTSB is issuing one safety recommendation to Transport Canada.


Probable Cause

‚ÄčRecommendation

To Transport Canada:

Require that all JT15D-5 engines installed on Raytheon/Hawker Beechjet 400A airplanes be modified to dampen the rub-induced excitation that can occur between the engine fan and fan case during birdstrike or foreign object ingestion events. (A-17-7)


Accident Location: Multiple , Multiple    
Accident Date:  
Accident ID: ENG14IA013, ENG14IA011, CEN09IA481

Date Adopted: 2/28/2017
NTSB Number: ASR1703
NTIS Number:  

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A-17-007

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