Beschrijving:Empire Airlines flight CFS8284 departed Fort Worth Alliance Airport, TX (AFW) at 03:21 CST on a cargo flight to Lubbock Preston Smith International Airport, TX (LBB). Weather at Lubbock was poor with an overcast at 500 feet, freezing drizzle and mist.
|Datum:||dinsdag 27 januari 2009|
|Vloog voor:||Empire Airlines|
|Motoren:|| 2 Pratt & Whitney Canada PW121|
|Bemanning:||slachtoffers: 0 / inzittenden: 2|
|Passagiers:||slachtoffers: 0 / inzittenden: 0|
|Totaal:||slachtoffers: 0 / inzittenden: 2 |
|Gevolgen:|| Written off (damaged beyond repair)|
|Plaats:||Lubbock Preston Smith International Airport, TX (LBB) ( Verenigde Staten)
|Fase:|| Landing (LDG)|
|Vliegveld van vertrek:||Fort Worth Alliance Airport, TX (AFW/KAFW), Verenigde Staten|
|Vliegveld van aankomst:||Lubbock Preston Smith International Airport, TX (LBB/KLBB), Verenigde Staten|
The aircraft encountered icing conditions while en route to Lubbock. And although the airplane accumulated some ice during the flight that degraded its performance, the NTSB determined that the aircraft could have landed safely had the airspeed been maintained.
During the approach to Lubbock runway 17R, at about 1400 feet above the ground and about 90 seconds from the runway, the captain indicated a flight control problem saying, "We have no flaps." Although the crewmembers had been trained to perform a go-around and refer to a checklist if a flap problem occurred during an approach, the captain chose to continue the approach as he attempted to troubleshoot the flap anomaly while the first officer flew the plane. Neither flight crewmember adequately monitored the airspeed, which decayed to the extent that the stick shaker activated, which warned of an impending aerodynamic stall.
The captain continued the unstabilized approach even though he received additional stick shaker activations and an aural "pull up" warning from the terrain awareness and warning system (TAWS). At that point, the plane was descending at a rate of over 2,000 ft per minute.
Although procedures for responding to either the stick shaker or the TAWS warning require the immediate application of maximum engine power, the captain did not apply maximum power until 17 seconds after the TAWS warning. Seconds after maximum power was applied, the airplane entered an aerodynamic stall and crashed.
Probable Cause:PROBABLE CAUSE: "The National Transportation Safety Board determines that the probable cause of this accident was the flight crew's failure to monitor and maintain a minimum safe airspeed while executing an instrument approach in icing conditions, which resulted in an aerodynamic stall at low altitude. Contributing to the accident were 1) the flight crew's failure to follow published standard operating procedures in response to a flap anomaly, 2) the captain's decision to continue with the unstabilized approach, 3) the flight crew's poor crew resource management, and 4) fatigue due to the time of day in which the accident occurred and a cumulative sleep debt, which likely impaired the captain's performance."
METAR Weather report:
09:53 UTC / 03:53 local time: KLBB 270953Z 01014KT 3SM -FZDZ BR OVC005 M08/M09 A3013 RMK AO2 PRESRR SLP227 P0000 T10781094=
wind at 10 degrees, 14 kts, visibility 3 miles in mist and freezing drizzle, ceiling 500 feet overcast, temperature -7.8 deg C, dewpoint -9.4 deg C
10:53 UTC / 04:53 local time: KLBB 271053Z 02011G18KT 2SM -FZDZ BR OVC005 M08/M09 A3013 RMK AO2 CIG 004V009 SLP228 P0000 T10781094=
wind at 20 degrees, 11 kts gusting to 18 kts, visibility 2 miles in mist and freezing drizzle, ceiling 500 feet overcast, temperature -7.8 deg C, dewpoint -9.4 deg C
N15827 was converted to cargo plane and bought by FedEx as N902FX in May 2003
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Deze kaart geeft het vliegveld van vetrek weer en de geplande bestemming van de vlucht. De lijn tussen de vliegvelden geeft niet
de exacte vliegroute weer.
De afstand tussen Fort Worth Alliance Airport, TX en Lubbock Preston Smith International Airport, TX bedraagt 422 km (264 miles).