Narrative:Westwind N50SK departed Dallas-Redbird Airport at 18:56 CST under an IFR flightplan bound for Teterboro.
Upset at FL370 as a result of clear air turbulence associated with a VIP level 6 thunderstorm; entered an uncontrolled descent through the cell. Left main landing gear door broke off due to overstress striking the left horizontal stabilizer which separated.
Probable Cause:
PROBABLE CAUSE:
flight/nav instruments,weather radar system..failure,partial
weather condition..thunderstorm
weather condition..turbulence,clear air
weather condition..gusts
weather condition..downdraft
preflight briefing service..improper..atc personnel(fss)
hazardous weather advisory..not issued..atc personnel(fss)
in-flight weather advisories..not issued..atc personnel(fss)
information unclear..atc personnel(fss)
CONTRIBUTING FACTORS:
operation with known deficiencies in equipment..continued..pilot in command
light condition..dark night
excessive workload (task overload)..pilot in command
excessive workload (task overload)..copilot/second pilot
Accident investigation:
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Investigating agency: | NTSB  |
Status: | Investigation completed |
Duration: | 1 year and 10 months | Accident number: | FTW86MA058 | Download report: | Summary report
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Classification:
Turbulence
Loss of control
Sources:
» NTSB
Follow-up / safety actions
NTSB issued 4 Safety Recommendations
Issued: 16-FEB-1988 | To: FAA | A-88-20 |
AMEND CHAPTER 2, SECTION 6, PARAGRAPH 2-101, OF THE AIR TRAFFIC CONTROL HANDBOOK, 7110.65E, TO REQUIRE AIR TRAFFIC CONTROLLERS TO FREQUENTLY BROADCAST THE SIGNIFICANT HAZARDOUS WEATHER REPORTS THAT ARE IN EFFECT. (Closed - Unacceptable Action) |
Issued: 16-FEB-1988 | To: FAA | A-88-21 |
AMEND CHAPTER 4, SECTION 7, PARAGRAPH 343, SUBPARAGRAPH (1)(H) OF THE AIRMAN\'S INFORMATION MANUAL TO INCLUDE AIRBORNE WEATHER RADAR AS AN ITEM OF EQUIPMENT WHOSE COMPLETE OR PARTIAL LOSS OF CAPABILITY SHOULD BE REPORTED TO AIR TRAFFIC CONTROL. (Closed - Acceptable Action) |
Issued: 16-FEB-1988 | To: FAA | A-88-22 |
AMEND CHAPTER 2, PARAGRAPH 2-7 OF THE AIR TRAFFIC CONTROL HANDBOOK, 7110.65E, TO INCLUDE AIRBORNE WEATHER RADAR EQUIPMENT AS AN IN-FLIGHT EQUIPMENT LOSS OR MALFUNCTION COVERED BY THIS PARAGRAPH. (Closed - Acceptable Action) |
Issued: 16-FEB-1988 | To: FAA | A-88-23 |
EXPEDITE THE IMPLEMENTATION OF THE HAZARDOUS IN-FLIGHT WEATHER ADVISORY SERVICE PROGRAM IN ALL AIR ROUTE TRAFFIC CONTROL CENTERS WITHIN THE CONTERMINOUS UNITED STATES, PRIOR TO THE SUMMER CONVECTIVE WEATHER SEASON OF 1988. (Closed - Acceptable Alternate Action) |
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Photos
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 Dallas-Redbird Airport, TX to Teterboro Airport, NJ as the crow flies is 2202 km (1376 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.