Boeing 727-247 N296WA
24 May 1989 · Denver, Colorado, United States · No injuries
Summary
On 24 May 1989 at about 14:05 local time, a Boeing 727-247 registered N296WA, operated by Delta Air Lines, was involved in an incident near Denver, Colorado, United States. 121 people were on board and nobody was injured. The aircraft was slightly damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.
The record
- Date
- at 14:05
- Classification
- Incident
- Location
- Denver, Colorado, United States
- Nearest airport
- Stapelton Int'l (KDEN)
- Coordinates
- 39.7598, -104.9203
- Aircraft
- Boeing 727-247
- Registration
- N296WA
- Category
- Airplane
- Engines
- 3
- Operator
- Delta Air Lines
- Operating rule
- Part 121: Air Carrier
- Purpose of flight
- Unknown
- Phase of flight
- Not recorded
- Route
- Unknown → Atlanta
- Aircraft damage
- Minor
- Weather
- VMC
- Light
- Day
- NTSB number
- DEN89IA124
People
Nobody was injured.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 121 | 0 | 0 | 0 | 121 |
Probable cause
FAILURE OF THE LEFT MAIN LANDING GEAR FORWARD TRUNNION BEARING SUPPORT FITTING DUE TO A CRACK INITIATING AT THE FORWARD EDGE OF THE BORE AND PROPAGATING BY INTERGRANULAR STRESS CORROSION INTO THE BORE SURFACE THAT RESULTED IN AN EVENTUAL DUCTILE FRACTURE.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
THE LEFT MAIN LANDING GEAR COLLAPSED AS THE AIRCRAFT WAS PULLED FORWARD SLIGHTLY TO BRING THE NOSEWHEEL OFF THE CHOCKS PRIOR TO PUSHBACK. INSPECTION DISCLOSED A FRACTURE OF THE FORWARD TRUNNION BEARING SUPPORT FITTING (P/N 65-16206-11) AND HEAVY SURFACE CORROSION. MICROSCOPIC EXAMINATION DISCLOSED EXTENSIVE INTERGRANULAR STRESS CORROSION, AND A CRACK THAT HAD DEVELOPED 0.1 INCHES INBOARD FROM THE FORWARD EDGE OF THE BORE, WHICH HAD PROPAGATED APPROXIMATELY 2.1 INCHES AFT INTO THE BORE SURFACE. THE FINAL FRACTURE RESULTED FROM DUCTILE SEPARATION.
Quoted verbatim from the NTSB record.
Other Boeing 727 accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 10 Aug 1989 | Boeing 727-224 | Los Angeles, California, United States | Continental Airlines | No injuries | - |
| 15 Dec 1989 | Boeing 727 | Ormond Beach, Florida, United States | - | No injuries | - |
| 23 May 1989 | Boeing 727-100 | Guantanamo | Gulf Air Transport | No injuries | - |
| 27 Dec 1989 | Boeing 727-225B | Miami, Florida, United States | Eastern Air Lines, Inc | Fatal | 1 |
| 14 Oct 1989 | Boeing 727-232 | Salt Lake City, Utah, United States | - | Minor injuries | - |
| 9 Dec 1989 | Boeing 727-31 | Newark, New Jersey, United States | - | No injuries | - |
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 4 Jan 1989 | Cessna 172 | Longmont, Colorado, United States | Denver Air Center | No injuries | - |
| 6 Jan 1989 | Piper PA-31T | Craig, Colorado, United States | Cummins Power Inc | No injuries | - |
| 18 Jan 1989 | Beechcraft V35B | Broomfield, Colorado, United States | - | Minor injuries | - |
| 28 Jan 1989 | Cessna P210N | Durango, Colorado, United States | - | No injuries | - |
| 8 Feb 1989 | Piper PA-18-150 | Boulder, Colorado, United States | Boulder Flying Service | No injuries | - |
| 9 Feb 1989 | Cessna 152 | Gill, Colorado, United States | - | No injuries | - |