Boeing 737-232 N322DL
7 January 1992 · Dfw Airport, Texas, United States · No injuries
Summary
On 7 January 1992 at about 19:32 local time, a Boeing 737-232 registered N322DL, operated by Delta Air Lines, Inc., was involved in an incident near Dfw Airport, Texas, United States. 49 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 19:32
- Classification
- Incident
- Location
- Dfw Airport, Texas, United States
- Nearest airport
- Dfw Airport (DFW)
- Coordinates
- Not recorded
- Aircraft
- Boeing 737-232
- Registration
- N322DL
- Category
- Airplane
- Engines
- 2
- Operator
- Delta Air Lines, Inc.
- Operating rule
- Part 121: Air Carrier
- Purpose of flight
- Unknown
- Phase of flight
- Not recorded
- Route
- Unknown → Houston
- Aircraft damage
- Minor
- Weather
- VMC
- Light
- Day
- NTSB number
- FTW92IA055
People
Nobody was injured.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 49 | 0 | 0 | 0 | 49 |
Probable cause
THE FAILURE OF THE AFT CONE BOLT AS RESULT OF PREEXISTING FATIGUE CRACKING DUE TO IMPROPER MAINTENANCE, AND THE FAILURE OF THE SECONDARY SUPPORT STRUCTURE AS A RESULT OF LOADS THAT EXCEEDED THE CAPACITY OF THE ATTACHING HARDWARE AND THE CRUSHABLE HONEYCOMB CORE.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
THE RIGHT ENGINE SEPARATED FROM THE WING AS THE AIRPLANE WAS CLIMBING THROUGH 200 FEET AFTER TAKEOFF. FOLLOWING THE ENGINE SEPARATION, THE CREW CONTINUED THE CLIMB AND WERE VECTORED FOR AN UNEVENTFUL LANDING WITHOUT FURTHER INCIDENT. ENGINE SEPARATION WAS THE RESULT OF THE FAILURE OF THE AFT CONE BOLT AND THE ENGINE SECONDARY SUPPORT ASSEMBLY. THE AFT CONE BOLT FAILED AS RESULT OF A PREEXISTING FATIGUE CRACK, WHILE THE ENGINE SECONDARY SUPPORT ASSEMBLY FAILED AS RESULT OF THE DYNAMIC LOADS THAT EXCEEDED THE DESIGNED CAPACITY OF THE MOUNTING BOLTS. THE TWO FORWARD CONE BOLTS FAILED IN OVERLOAD AS THE ENGINE SWUNG FORWARD DURING THE SEPARATION SEQUENCE. METALLURGICAL TESTING REVEALED THAT THE FATIGUE OF THE AFT CONE BOLT WAS A RESULT OF LUBRICANT INADVERTENTLY INTRODUCED INTO THE CONICAL SURFACE OF THE CONE BOLT.
Quoted verbatim from the NTSB record.
Other Boeing 737 accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 12 Oct 1992 | Boeing 737-300 | Pittsburgh, Pennsylvania, United States | Usair | No injuries | - |
| 27 Aug 1992 | Boeing 737-200 | Miami, Florida, United States | Carnival Airlines | Serious injuries | - |
| 8 Dec 1992 | Boeing 737-300LR | Flushing, New York, United States | Usair | Fatal | - |
| 15 May 1992 | Boeing 737-200 | Palacios, Texas, United States | Southwest Airlines Co. | Serious injuries | - |
| 7 Jun 1992 | Boeing 737-204 | Tucuti, Panama | Copa Airlines | Unknown | - |
| 3 Aug 1992 | Boeing 737-300 | Springfield, Missouri, United States | Southwest Airlines, Inc. | Serious injuries | - |
All 1,317 records for this type
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 3 Jan 1992 | Beechcraft B19 | Bonham, Texas, United States | ARI BEN Aviation | No injuries | - |
| 4 Jan 1992 | Alvin D Campbell KR-2 | San Marcos, Texas, United States | Alvin D. Campbell | Fatal | 2 |
| 14 Jan 1992 | Cessna 205A | Spring, Texas, United States | Owens, Grady | No injuries | - |
| 22 Jan 1992 | Mooney M20J | Austin, Texas, United States | Kissock, Darryl C. | Serious injuries | - |
| 22 Jan 1992 | Piper PA-28-140 | Denton, Texas, United States | Thomas A. Tweeddale | No injuries | - |
| 5 Sep 1992 | Robinson R22 | Alpine, Texas, United States | Helicopters International | Fatal | 1 |