Accident
Last updated: 23 November 2014
Status:Definitief
Datum:dinsdag 27 januari 2009
Tijd:04:37
Type:Silhouette image of generic AT43 model; specific model in this crash may look slightly different
ATR-42-320
Vloog voor:Empire Airlines
Gehuurd van:FedEx
Registratie: N902FX
Constructienummer: 175
Bouwjaar: 1990
Aantal vlieguren:28768
Aantal vluchten:32379
Motoren: 2 Pratt & Whitney Canada PW121
Bemanning:slachtoffers: 0 / inzittenden: 2
Passagiers:slachtoffers: 0 / inzittenden: 0
Totaal:slachtoffers: 0 / inzittenden: 2
Schade: Vernield
Gevolgen: Written off (damaged beyond repair)
Plaats:Lubbock Preston Smith International Airport, TX (LBB) (   Verenigde Staten) show on map
Fase: Landing (LDG)
Soort vlucht:Vracht
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
Vluchtnummer:8284
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.
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: "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."

Bronnen:
» NTSB

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

Official accident investigation report
investigating agency: National Transport Safety Bureau (NTSB) - United States of America
report status: Final
report number: NTSB/AAR-11-02
report released:26-APR-2011
duration of investigation:819 days (2 years 3 months)
download report: Crash During Approach to Landing Empire Airlines Flight 8284 Avions de Transport Regional Aerospatiale Alenia ATR 42-320, N902FX (NTSB/AAR-11-02)

Veiligheidsmaatregelen

NTSB issued 13 Safety Recommendations

Show all AD's and Safety Recommendations

Foto's

photo of ATR-42-320 N902FX
photo of ATR-42-320 N902FX
photo of ATR-42-320 N902FX
photo of ATR-42-320 N902FX
photo of ATR-42-320 N902FX
photo of ATR-42-320 N902FX
photo of ATR-42-320 N15827
N15827 was converted to cargo plane and bought by FedEx as N902FX in May 2003
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Video/animation

Kaart
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).

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