Accident
Last updated: 31 October 2014
Status:Schlussbericht
Datum:Dienstag 4 März 2008
Zeit:15:15
Flugzeugtyp:Silhouette image of generic C500 model; specific model in this crash may look slightly different
Cessna 500 Citation I
Fluggesellschaft:Interstate Helicopters
Kennzeichen: N113SH
Werknummer: 500-0285
Baujahr: 1975
Triebwerk: 2 Pratt & Whitney Canada JT15D-1A
Besatzung:Todesopfer: 2 / Insassen: 2
Fluggäste:Todesopfer: 3 / Insassen: 3
Gesamt:Todesopfer: 5 / Insassen: 5
Sachschaden: Zerstört
Konsequenzen: Written off (damaged beyond repair)
Unfallort:6,5 km (4.1 Meilen) SW of Oklahoma City-Wiley Post Airport, OK (PWA) (   USA) show on map
Flugphase: Während des Fluges (ENR)
Betriebsart:Geschäftsflug
Flug von:Oklahoma City-Wiley Post Airport, OK (PWA/KPWA), USA
Flug nach:Mankato Municipal Airport, MN (MKT/KMKT), USA
Unfallbericht:
A twin-engine Cessna 500 airplane, N113SH, was destroyed upon impact with terrain following a loss of control shortly after takeoff from runway 17L at the Wiley Post Airport (PWA), in Oklahoma City, Oklahoma. The airplane was registered to the Southwest Orthopedic and Sports Medicine Clinic and operated by Interstate Helicopters.
At the time of the accident, Interstate Helicopters was operating the accident airplane in commercial service contrary to its Federal Aviation Administration-issued 14 Code of Federal Regulations Part 135 operating certificate, which, at the time, did not authorize operation of the accident airplane or any other fixed-wing aircraft.
The Cessna Citation took off from Wiley Post Airport, OK at 15:13 and climbed to an altitude of 3,100 feet while on a southwesterly heading. While in the
airspace near the Lake Overholser dam the airplane started a steep descent. The airplane impacted wooded terrain approximately one mile south of the dam. There were no reported radio calls of distress from the flight crew.
Investigation revealed that departure from controlled flight likely resulted from wing structure damage sustained during an in-flight collision with a flock of American white pelicans, which far exceeded the airframe’s design certification limit. Also, the right engine failed as a result of the collision with these birds.


PROBABLE CAUSE: "The National Transportation Safety Board determines that the probable cause of this accident was airplane wing-structure damage sustained during impact with one or more large birds (American white pelicans), which resulted in a loss of control of the airplane."

Informationsquelle:
» FAA
» NTSB id. DFW08FA076

Official accident investigation report
investigating agency: National Transport Safety Bureau (NTSB) - United States of America
report status: Final
report number: NTSB AAR-09/05
report released:28-JUL-2009
duration of investigation:511 days (1 year 4.9 months)
download report: Crash of Cessna 500, N113SH, Following an In-Flight Collision with Large Birds, Oklahoma City, Oklahoma, March 4, 2008 (NTSB AAR-09/05)
cover

Sicherheitsempfehlungen

NTSB issued 21 Safety Recommendations

Show all AD's and Safety Recommendations

Fotos

photo of Cessna 500 Citation I N113SH
Bird splatter, top right side of horizontal stabilizer
photo of Cessna 500 Citation I N113SH
Flight data recorder
photo of Cessna 500 Citation I N113SH
Bird splatter, top right side of horizontal stabilizer
photo of Cessna 500 Citation I N113SH
Bird splatter, top right side of horizontal stabilizer
photo of Cessna 500 Citation I N113SH
Bird splatter, top right side of horizontal stabilizer
photo of Cessna 500 Citation I N113SH
Bird splatter, top right side of horizontal stabilizer
photo of Cessna 500 Citation I N113SH
Bird splatter, top right side of horizontal stabilizer
photo of Cessna 500 Citation I N113SH
Final flight path
photo of Cessna 500 Citation I N113SH
Final flight path, 3D
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Map
This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Oklahoma City-Wiley Post Airport, OK to Mankato Municipal Airport, MN as the crow flies is 1010 km (631 miles).

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