- Date
- January 3, 1986, 07:22 local (13:22 UTC)
- Place
- Dallas, TX
- Injuries
- 44 uninjured
- Damage
- Minor damage
- Phase of flight
- Takeoff
- Aircraft
- N86SWBoeing 737-2H4
- Weather
- Visual (VMC) · Day
- Status
- Completed
- Report
- Approved by Office Director
- FAA report
- 19860103068529I
- Case key
- 22165
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the incident.
On this page
Sequence of events
NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.
Analysis
This incident occurred when the no. 2 engine experienced an aft engine mount cone bolt failure and the subsequent failure of the secondary support link (stainless steel cable). The failure of both aft engine support assemblies during the takeoff roll allowed the aft section of the eng to hang down to within 4' of the ground. As a result, the no.2 thrust reverser actuator assembly drug the runway on rotation. In addition, one leading edge flap and the forward engine fairing were slightly damaged. The acft subsequently returned to the arpt and landed without further incident. Metallurgical examination of the cone bolt revealed that it failed as a result of fatigue, most probably due to improper installation of the bolt, specifically, that it was under torqued when the operator re-installed the eng. The safety cable failed as a result of overstress, probably induced when the acft encountered a rough stretch of runway during the takeoff roll.
Aircraft
- Registration
- N86SW
- Reported as
- Boeing 737-2H4
- Category
- Airplane
- Serial number
- 22827
- Airframe hours
- 12,341
- Engine
- P&W JT-8D-9A, 14,500 lbs thrust, turbo fan
- Damage
- Minor damage
- Flight
- Part 121
- Registered owner
- Southwest Airlines Co.
- Airworthiness certificate
- Standard, Transport
- Last inspection
- AAIP · December 28, 1985 · 77 hours before
- Departed
- DAL
- Destination
- AUS · Austin, TX
- Flight plan
- IFR
- Airport
- DAL · Love Field, runway 31R, 7,753 × 150 ft, asphalt
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 45
- Certificate
- Airline transport
- Airplane ratings
- Multi-engine land, Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 1, Valid Medical--no waivers/lim.
- Seat
- Left
- Flight hours
- 13,050 total · 8,550 in this make and model · 1 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- Calm
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Temperature
- 37 °F, dew point 30 °F
- Altimeter
- 30.00 inHg
- Observed at
- DAL
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.