Event Details


Title:Overspeed And Loss Of Power On Both Engines During Descent And Power-Off Emergency Landing, Simmons Airlines, Inc., D/B/A American Eagle Flight 3641, N349SB False River Air Park, New Roads, Louisiana, February 1, 1994
Micro summary:This Saab 340 lost power in-flight and attempted a forced landing.
Event Time:1994-02-01 at 2140 CST
File Name:1994-02-01-US.pdf
Publishing Agency:National Transportation Safety Board (NTSB)
Publishing Country:USA
Report number:NTSB-AAR-94-06
Pages:78
Site of event:Approach to BTR
Latitude/Longitude:N3043'10" W09128'43"
Departure:Dallas-Fort Worth International Airport, Dallas, Texas, USA
Destination:
Airplane Type(s):Saab 340B
Flight Phase:Landing
Registration(s):N349SB
Operator(s):American Eagle (Simmons Airlines)
Type of flight:Revenue
Occupants:26
Fatalities:0
Serious Injuries:1
Minor/Non-Injured:25
Other Injuries:0
Executive Summary:On February 7, 1994, at 2140 central standard time, Simmons Airlines/American Eagle flight 3641 a Saab 340B, registration N349SB7 operating under Title 14 Code of Federal Regulations, Part 121 sustained substantial damage during a forced landing at False River Air Park, New Roads, Louisiana. Of the 23 passengers, 2 flightcrew, and 1 flight attendant aboard the airplane, there was one minor injury to the flight attendant during evacuation. There was no postcrash fire.

The National Transportation Safety Board determines that the probable causes of this accident were the captain's movement of the power levers below flight idle in flight, the inadequate certification requirements and consequent design of the airplane's power levers that permitted them to be moved below the flight idle position into the beta range, either intentionally or inadvertently, while in flight, and the inadequate action taken to require a positive means to prevent beta operation on airplanes for which such operation is prohibited.

The safety issues in this report focused on the safety hazards involved with the in-flight operation of propellers in the beta mode in airplanes for which such operation is prohibited. The Safety Board reiterated Safety Recommendation A-94-62, which is intended to prevent the in-flight beta operation unless the airplane is certificated for such use.
Learning Keywords:Operations - Deadstick/Power Loss
Operations - Evacuation
Systems - Engine - Contained Engine Failure
Systems - Engine - Engine Management
Other - Certification
Consequence - Flight Attendant Fatality - Injury
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