McDonnell Douglas DC-9-82 N409AA
23 March 1987 · Minneapolis, Minnesota, United States · No injuries
Summary
On 23 March 1987 at about 15:58 local time, a McDonnell Douglas DC-9-82 registered N409AA was involved in an incident near Minneapolis, Minnesota, United States. 114 people were on board and nobody was injured. The aircraft was slightly damaged. No probable cause statement is available for this record.
The record
- Date
- at 15:58
- Classification
- Incident
- Location
- Minneapolis, Minnesota, United States
- Coordinates
- 44.7410, -93.1893
- Aircraft
- McDonnell Douglas DC-9-82
- Registration
- N409AA
- Category
- Airplane
- Engines
- 2
- Operator
- Not recorded
- Operating rule
- Part 121: Air Carrier
- Purpose of flight
- Unknown
- Phase of flight
- Not recorded
- Route
- Chicago → Minneapolis
- Aircraft damage
- Minor
- Weather
- Unk
- Light
- Day
- NTSB number
- CHI87IA100
People
Nobody was injured.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 114 | 0 | 0 | 0 | 114 |
Probable cause
The NTSB has not published a probable cause for this record. No probable cause statement is present in the source data.
Nothing about the cause is stated here that is not in the source record.
Read the full NTSB narrative
THE AIRCRAFT LANDED UNEVENTFULLY AFTER THE RIGHT ENGINE FAILED DURING A DESCENT. THE SHUTDOWN OCCURRED AFTER FAILED ANTIROTATION PINS ALLOWED GAS LOADS TO DRIVE NORMALLY STATIONARY THIRD STAGE VANE CLUSTERS IN THE LOW PRESSURE TURBINE AREA. ROTATION OF THE CLUSTERS IN THEIR CHANNEL ALLOWED THE CLUSTERS TO MACHINE THEMSELVES OUT THROUGH THE LOW PRESSURE TURBINE CASE. EVIDENCE INDICATES THAT 23 OF THE 44 THIRD STAGE VANE ANTI-ROTATION PINS RUPTURED FOLLOWED BY FRACTURE OF THE REMAINING PINS FROM SHEAR OVERLOAD. THE PIN STRESS RUPTURE WAS THE RESULT OF BENDING STRESSES ON THE VANE PINS FROM VANE TWIST & PIN MATERIAL CREEP. A DESIGN TASK WAS INITIATED IN 1986 TO PROVIDE A MORE DURABLE PIN AND IN MAY 1987 P&W RELEASED A NEW MATERIAL, INCO 901 NON-STEPPED, ANTI-ROTATION PIN, PN 803995, TO REPLACE THE PN 599714 TINIDUR PIN.
Quoted verbatim from the NTSB record.
Other McDonnell Douglas DC-9 accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 1 Nov 1987 | McDonnell Douglas DC-9-82 | Newark, New Jersey, United States | Continental Airlines | No injuries | - |
| 17 Aug 1987 | McDonnell Douglas DC-9-82 | Romulus, Michigan, United States | - | Fatal | 154 |
| 15 Nov 1987 | McDonnell Douglas DC-9-14 | Denver, Colorado, United States | - | Fatal | 28 |
| 9 Oct 1987 | McDonnell Douglas DC-9-82 | Ontario, California, United States | American Airlines, Inc. | No injuries | - |
| 30 May 1987 | McDonnell Douglas DC-9-82 | Chicago, Illinois, United States | - | No injuries | - |
| 28 Dec 1987 | McDonnell Douglas DC-9-31 | Pensacola, Florida, United States | Eastern Air Lines | Minor injuries | - |
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 28 Mar 1987 | Aeronca 15AC | Hibbing, Minnesota, United States | Swan Lake Flyers | No injuries | - |
| 19 Nov 1987 | Bellanca 7GCAA | Belle Plaine, Minnesota, United States | - | No injuries | - |
| 5 Dec 1987 | Cessna 180 | Carlton, Minnesota, United States | - | No injuries | - |
| 26 Dec 1987 | Cessna 150M | Redwood Falls, Minnesota, United States | Sun Aviation | No injuries | - |
| 15 May 1987 | Cessna 152 | Minneapolis, Minnesota, United States | Flying Scottsman, Inc. | No injuries | - |
| 29 May 1987 | Cessna U206C | Grand Rapids, Minnesota, United States | - | No injuries | - |