28 Years ago today: On 5 April 1991 an Atlantic Southeast Embraer 120 Brasilia crashed near Brunswick, GA, U.S.A. following a loss of control, killing all 23 occupants.

Date:Friday 5 April 1991
Time:14:51
Type: Embraer EMB-120RT Brasilia
Operated by:Atlantic Southeast Airlines – ASA
On behalf of:Delta Connection
Registration:N270AS
C/n / msn:120218
First flight:1990
Total airframe hrs:816
Cycles:845
Engines:Pratt & Whitney Canada PW118
Crew:Fatalities: 3 / Occupants: 3
Passengers:Fatalities: 20 / Occupants: 20
Total:Fatalities: 23 / Occupants: 23
Aircraft damage:Destroyed
Aircraft fate:Written off (damaged beyond repair)
Location:3 km (1.9 mls) W of Brunswick-Glynco Jetport, GA (BQK) (   United States of America)
Phase:Approach (APR)
Nature:Domestic Scheduled Passenger
Departure airport:Atlanta-William B. Hartsfield International Airport, GA (ATL/KATL), United States of America
Destination airport:Brunswick-Glynco Jetport, GA (BQK/KBQK), United States of America
Flightnumber:2311

Narrative:
Flight 2311 was scheduled initially for airplane N228AS to depart at 13:24 EST. Because of mechanical problems an airplane change was made to N270AS. The flight departed Atlanta at 13:47 and arrived in the Brunswick area about 14:44. At 14:48 the flight was cleared for a visual approach to runway 07. The Embraer had just turned from base leg to final approach when the aircraft was seen to pitch up about 5deg and roll to the left until the wings were vertical. The airplane then nosed down into the ground, 9975 feet short of the runway

Probable Cause:

PROBABLE CAUSE: “The loss of control in flight as a result of a malfunction of the left engine propeller control unit which allowed the propeller blade angles to go below the flight idle position. Contributing to the accident was the deficient design of the propeller control unit by Hamilton Standard and the approval of the design by the Federal Aviation Administration. The design did not correctly evaluate the failure mode that occurred during this flight, which resulted in an uncommanded and uncorrectable movement of the blades of the airplane’s left propeller below the flight idle position.”