McDonnell Douglas DC-9-32 N941N
22 September 2002 · Minneapolis, Minnesota, United States · No injuries
Summary
On 22 September 2002 at about 23:52 local time, a McDonnell Douglas DC-9-32 registered N941N was involved in an accident near Minneapolis, Minnesota, United States. 85 people were on board and nobody was injured. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.
The record
- Date
- at 23:52
- Classification
- Accident
- Location
- Minneapolis, Minnesota, United States
- Nearest airport
- Minneapolis-St Paul Intl/Wold- (MSP)
- Coordinates
- 44.8806, -93.2169
- Aircraft
- McDonnell Douglas DC-9-32
- Registration
- N941N
- Category
- Airplane
- Engines
- 2
- Operator
- Not recorded
- Operating rule
- Part 121: Air Carrier
- Phase of flight
- Not recorded
- Route
- Minneapolis → Charlotte
- Aircraft damage
- Substantial
- Weather
- VMC
- Light
- Day
- NTSB number
- CHI02FA289
People
Nobody was injured.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 85 | 0 | 0 | 0 | 85 |
Probable cause
The fatigue failure of the main landing gear strut due to inclusions in the material, residual stresses, and dissolved hydrogen content.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
The airplane was damaged when the right main landing gear failed and collapsed during taxi for takeoff. A dark spot observed on the fracture surface showed a region with intergranular fracture features at the origin of the fracture with other areas of fatigue and intergranular fracture. Outside of the dark spot, the fracture features were consistent with overstress. Examination of the fractured landing gear revealed that small subsurface inclusions were present in the area near the fracture origin. Dissolved hydrogen content testing revealed hydrogen content ranging from 1 to 5 ppm. Residual stress tests show that the cylinder had compressive stress layers at the outer surface consistent with shot peening. The stress profiles showed maximum compressive stresses of 200 to 250 ksi transitioning to residual tensile stresses between 0.01 and 0.02 inch below the surface.
Quoted verbatim from the NTSB record.
Other McDonnell Douglas DC-9 accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 24 Jan 2002 | McDonnell Douglas DC-9-41 | Indianapolis, Indiana, United States | - | Serious injuries | - |
| 20 Jan 2002 | McDonnell Douglas DC-9-32 | Dulles, Virginia, United States | - | No injuries | - |
| 17 Jun 2002 | McDonnell Douglas DC-9-82 | Kansas City, Missouri, United States | Vanguard Airlines Inc. | No injuries | - |
| 1 Nov 2002 | McDonnell Douglas DC 9-32 | Monterrey, Mexico | Aerovias de Mexico S.A. | Minor injuries | - |
| 25 Jul 2001 | McDonnell Douglas DC-9-51 | Detroit, Michigan, United States | - | Serious injuries | - |
| 2 Sep 2003 | McDonnell Douglas DC-9-82 | Jamaica, New York, United States | American Airlines Inc | No injuries | - |
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 12 Jan 2002 | Wolter AVID FLYER | Rush City, Minnesota, United States | - | Fatal | 1 |
| 11 Jun 2002 | Bell 47G-2A-1 | Jordan, Minnesota, United States | - | Minor injuries | - |
| 5 Sep 2002 | Cessna 152 | Brooklyn Park, Minnesota, United States | - | No injuries | - |
| 4 Jul 2002 | Hale KITFOX MODEL III | Fairmont, Minnesota, United States | - | No injuries | - |
| 25 Aug 2002 | Mooney M20C | Warroad, Minnesota, United States | - | No injuries | - |
| 9 Nov 2002 | Beechcraft D35 | Dodge Center, Minnesota, United States | - | Serious injuries | - |