ASN Aircraft accident Cessna 560 Citation V N500AT Pueblo Memorial Airport, CO (PUB)

Home » Database » 2005

Status:	Accident investigation report completed and information captured
Date:	Wednesday 16 February 2005
Time:	09:13
Type:	Cessna 560 Citation V
Operator:	Circuit City Stores
Registration:	N500AT
MSN:	560-0146
First flight:	1991
Total airframe hrs:	3657
Engines:	2 Pratt & Whitney Canada JT15D-5A
Crew:	Fatalities: 2 / Occupants: 2
Passengers:	Fatalities: 6 / Occupants: 6
Total:	Fatalities: 8 / Occupants: 8
Aircraft damage:	Destroyed
Aircraft fate:	Written off (damaged beyond repair)
Location:	6,5 km (4.1 mls) from Pueblo Memorial Airport, CO (PUB) ( United States of America)
Phase:	Approach (APR)
Nature:	Executive
Departure airport:	Columbia Regional Airport, MO (COU/KCOU), United States of America
Destination airport:	Pueblo Memorial Airport, CO (PUB/KPUB), United States of America

Narrative:
Citation N500AT was one of two company planes flying from Richmond to Pueblo. A refueling stop was made at Columbia. N500AT received clearance to land at runway 26R and descended through IMC. The flight continued to lose height until the left wing contacted the ground. The Citation crashed in prairie land and caught fire.

Probable Cause:

PROBABLE CAUSE: "The National Transportation Safety Board determines that the probable causes of this accident were the flight crew's failure to effectively monitor and maintain airspeed and comply with procedures for deice boot activation on the approach, which caused an aerodynamic stall from which they did not recover. Contributing to the accident was the FAA's failure to establish adequate certification requirements for flight into icing conditions, which led to the inadequate stall warning margin provided by the airplane's stall warning system. "

Accident investigation:

Investigating agency:	NTSB
Status:	Investigation completed
Duration:	1 year and 11 months
Accident number:	NTSB AAR-07-02
Download report:	Final report

Classification:

Icing
Loss of control

Sources:

» AP
» NTSB

METAR Weather report:

15:53 UTC / 08:53 local time:
KPUB 161553Z 06008KT 8SM BKN009 OVC014 M03/M05 A3016 RMK AO2 CIG 007V011 SLP236 T10281050=
wind 060 at 8 kts, visibility 8 miles, 5-7 oktas cloud at 900 feet, overcast cloud at 1400ft temperature -3C

Follow-up / safety actions

NTSB issued 8 Safety Recommendations

Issued: 15-AUG-1996	To: NTSB	A-96-54
Revise the icing criteria published in 14 Code of Federal Regulations Parts 23 and 25, in light of both recent research into aircraft ice accretion under varying conditions of liquid water content, drop size distribution, and temperature, and recent developments in both the design and use of aircraft. Also, expand the Appendix C icing certification envelope to include freezing drizzle/freezing rain and mixed water/ice crystal conditions, as necessary. (Open - Acceptable Response)
Issued: 30-NOV-1998	To: FAA	A-98-92
With the National Aeronautics and Space Administration and other interested avation organizations, conduct additional research to identify realistic ice accumulations, to include intercycle and residual ice accumulations and ice accumulations on unprotected surfaces aft of the deicing boots, and to determine the effects and criticality of such ice accumulations; further, the information developed through such research should be incorporated into aircraft certification requirements and pilot training programs at all levels. (Closed - Acceptable Action)
Issued: 27-FEB-2007	To: FAA	A-07-12
Require that operational training in the Cessna 560 airplane emphasize the airplane flight manual requirements that pilots increase the airspeed and operate the deice boots during approaches when ice is present on the wings. (Closed - Acceptable Action)
Issued: 27-FEB-2007	To: FAA	A-07-13
Require that all pilot training programs be modified to contain modules that teach and emphasize monitoring skills and workload management and include opportunities to practice and demonstrate proficiency in these areas. (Open - Acceptable Response)
Issued: 27-FEB-2007	To: FAA	A-07-14
Require manufacturers and operators of pneumatic deice boot-equipped airplanes to revise the guidance contained in their manuals and training programs to emphasize that leading edge deice boots should be activated as soon as the airplane enters icing conditions. (A-07-14) (This safety recommendation supersedes Safety Recommendation A-98-91 and is classified Open Unacceptable Response. (Open - Unacceptable Response)
Issued: 27-FEB-2007	To: FAA	A-07-15
Require that all pneumatic deice boot-equipped airplanes certified to fly in known icing conditions have a mode incorporated in the deice boot system that will automatically continue to cycle the deice boots once the system has been activated. (Closed - Acceptable Alternate Action)
Issued: 27-FEB-2007	To: FAA	A-07-16
When the revised icing certification standards (recommended in Safety Recommendations A-96-54 and A-98-92) and criteria are complete, review the icing certification of pneumatic deice boot-equipped airplanes that are currently certificated for operation in icing conditions and perform additional testing and take action as required to ensure that these airplanes fulfill the requirements of the revised icing certification standards. (A-07-16) (This safety recommendation supersedes Safety Recommendation A-98-100 and is classified Open Unacceptable Response. (Open - Unacceptable Response)
Issued: 27-FEB-2007	To: FAA	A-07-17
Require modification of the Cessna 560 airplanes stall warning system to provide a stall warning margin that takes into account the size, type, and distribution of ice, including thin, rough ice on or aft of the protected surfaces. (Closed - Acceptable Action)

Show all...

Photos

accident date: 16-02-2005
type: Cessna 560 Citation V
registration: N500AT

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 Columbia Regional Airport, MO to Pueblo Memorial Airport, CO as the crow flies is 1061 km (663 miles).
Accident location: Exact; deduced from official accident report.

This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.

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