Narrative:The flight was cleared for a visual approach to runway 17C. The approach was flown visually, backed up with the localizer and Precision Approach Path Indicator (PAPI). The approach was stable and the touchdown was normal. The captain reported that upon initial touchdown, a "loud bang" was heard, the right wing went down, and the aircraft started to move to the right. The pilots were able to maintain control of the airplane with rudder control and brought the airplane to a stop on the runway. Initial examination of the airplane and runway revealed that the lower portion of the right main landing gear assembly separated from the airplane. Fractured portions of the outer case of the gear strut assembly were found on the runway. The inner piston was found on the right side of the runway with the scissor and wheel assembly attached to it. The airplane came to rest 4,300 feet from its initial touchdown point. The right wing sustained structural damage. The forward spar of the right wing between stations 12,375 and 13,550 was damaged.
Probable Cause:
PROBABLE CAUSE: "A forging fold that was introduced during the manufacture of the right main landing, which resulted in a fatigue crack in the right main landing gear cylinder, and its subsequent failure during landing."
Accident investigation:
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Investigating agency: | NTSB |
Status: | Investigation completed |
Duration: | 2 years and 6 months | Accident number: | FTW01FA127 | Download report: | Summary report
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Sources:
» NTSB
Follow-up / safety actions
NTSB issued 5 Safety Recommendations
Issued: 20-AUG-2001 | To: FAA | A-01-30 |
Require all operators of Fokker F.100 series airplanes equipped with the main landing gear (MLG) that are identified in Messier-Dowty Service Bulletin (SB) F100-32-100 Revision 1 to immediately conduct an eddy current inspection of the MLG cylinders for forging folds and fatigue cracks as described in the most recent revision of Fokker Services SBF100-32-128 and to remove from service all landing gear in which such forging folds or cracks are found until they are returned to an airworthy condition. (Closed - Acceptable Action) |
Issued: 20-AUG-2001 | To: FAA | A-01-31 |
Require Fokker Services to immediately determine a repetitive inspection interval that will prevent structural cracks in main landing gear that are identified in Messier-Dowty Service Bulletin F100-32-100 Revision 1 from propagating to failure between inspections. (Closed - Acceptable Action) |
Issued: 20-AUG-2001 | To: FAA | A-01-32 |
Require all operators of Fokker F.100 series airplanes equipped with the main landing gear (MLG) that are identified in Messier-Dowty Service Bulletin (SB) F100-32-100 Revision 1 to periodically conduct eddy current inspections of MLG cylinders for forging folds or fatigue cracks, as described in the most recent revision of Fokker Services SBF100-32-128, at the interval identified in response to Safety Recommendation A-01-31. (Closed - Acceptable Action) |
Issued: 20-AUG-2001 | To: FAA | A-01-33 |
Require Fokker Services to review the current forging processes and inspection procedures for the main landing gear (MLG) that are identified in Messier-Dowty Service Bulletin F100-32-100 Revision 1 and to modify those processes and procedures, as appropriate, to ensure that forging folds do not occur in MLGs that are to be installed on its airplanes. (Closed - Acceptable Action) |
Issued: 20-AUG-2001 | To: FAA | A-01-34 |
Review the processes by which Messier-Dowty manufacturers and inspects its landing gear and require modification of these processes as necessary. (Closed - Acceptable 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 Charlotte-Douglas Airport, NC to Dallas/Fort Worth International Airport, TX as the crow flies is 1493 km (933 miles).
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.