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The turbo-machinery includes two independent, coaxially mounted, centrifugal compressors, each driven by a single stage turbine, and a two-stage power turbine that drives the reduction gearbox by means of a coaxial shaft that passes through the compressor shaft. The witnesses stated that the aircraft appeared to be in normal flight, on a downwind approach to runway 7.

Therefore, it is most likely that the pilots of flight 2311 did not notice a problem with the airplane until the propeller began to overspeed and roll control was affected." A surviving passenger later assisted by pulling the axe out of the cockpit through the hole Warmerdam had created and struck the glass from the outside in order to increase the size of the hole and help Warmerdam escape.

The flight departed at 1347, 20 minutes after the sch…
On April 5, 1991 an Atlantic Southeast Airlines (ASA) Embraer EMB-120 operating as Flight 2311 departed Atlanta, Georgia in route to Brunswick, Georgia with 20 passengers and three crew members (captain, first officer and a flight attendant). A key recommendation of the SCR report was to redesign the propeller system to include fail-safe features. The airplane received its U.S. standard airworthiness certificate on December 20, 1990. Investigators concluded that this sound would be consistent with the sound of a propeller over-speed.


The purpose of this review was to assess potential airworthiness deficiencies of the propeller and identify opportunities for improvements.

At 1448:10, the flight crew notified Jacksonville air route traffic control center they had the airport in sight. The flight was a scheduled commuter flight from Atlanta to Brunswick, Georgia, and was being conducted under instrument flight rules. The aircraft had accumulated about 816 flying hours prior to the accident. They stated that the airplane would have "become very difficult to control after the propeller reached the 22-degree stop.

This aircraft had three previous flights that day with no reported problems. 0000002773 00000 n If this were to happen in flight, and the bad engine were completely shut down, would that reduce the drag enough to recover control? Gannaway was a skilled pilot with 9,876 total hours of flying experience, including 7,374 flight hours in the Embraer Brasilia.Business travelers, ranging from 18 to 69 years of age, comprised most of the aircraft's passengers. Flight 529 was a regularly scheduled passenger flight from On August 21, 1995, the flight was operated using an Embraer EMB 120RT Brasilia (registration number The captain of the flight was Edwin "Ed" Gannaway, age 45, and the first officer was Matthew "Matt" Warmerdam, age 28.

The aircraft continued a turn from the base leg in about a 20-degree bank and a gradual descent. 0000015541 00000 n The 1991 crash of Atlantic Southeast Airlines Flight 2311 to Brunswick, Georgia claims the lives of a NASA astronaut and a former U.S. senator and becomes an international media sensation. 0000021300 00000 n 402 0 obj << /Linearized 1 /O 404 /H [ 1348 939 ] /L 879749 /E 29836 /N 52 /T 871590 >> endobj xref 402 47 0000000016 00000 n

The PCU governor provides metered oil pressure to operate a ball-screw drive which imparts rotary motion to the transfer tube by means of a splined quill. Here are the names and hometowns of the victims from Atlantic Southeast Airlines Flight 2311, which crashed and burned Friday outside Brunswick, Ga., killing all 23 people on board. 0000011726 00000 n It was learned during the investigation that if the transfer tube and quill become disengaged, the propeller can change pitch (in either increase pitch or decrease pitch) independent of PCU control.In the absence of flight data and cockpit voice recorders, the investigation assumed a specific accident sequence. But in order to prove the detectives' theory, they'll need to take a huge and potentially lethal gamble.

Nine of the 29 passengers and crew on board were killed as a result of the accident.

Investigators determined that the propeller control system failure was the result of a disengagement between the transfer tube spline and the quill spline. The inquiries of both crashes concluded that design flaws in the aircraft's propellers were to blame. 0000013407 00000 n 0000019324 00000 n Atlantic Southeast Airlines Flight 529, registration N256AS, was an Embraer Brasilia aircraft that crashed near Carrollton, Georgia on August 21, 1995 while on a flight from the Hartsfield-Jackson Atlanta International Airport to Gulfport-Biloxi International Airport in Gulfport, Mississippi. 0000015519 00000 n The propeller pitch continued to decrease and propeller rotational speed continued to increase, resulting in very high asymmetric drag. 0000028765 00000 n

0000003508 00000 n The aircraft was not equipped with a flight data recorder (FDR) or a cockpit voice recorded (CVR) as there were no requirements for either device at the time.The flight deviated around weather in route and arrived in the Brunswick area approximately 1444. 0000012830 00000 n

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