- Date
- June 26, 1984, 02:35 local (07:35 UTC)
- Place
- Chicago, IL
- Injuries
- 3 uninjured
- Damage
- Minor damage
- Phase of flight
- Landing
- Aircraft
- N8048UMcDonnell Douglas DC-8-54
- Weather
- Visual (VMC) · Night/dark
- Status
- Completed · report August 30, 1994
- Report
- Approved by Office Director
- FAA report
- 19840626035379I
- Case key
- 12454
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
During the landing roll, the left main gear swivel link pin failed allowing the rear set of tires to become detached from the main strut and drag along the rwy. The left main gear bogie was last overhauled in 1981. At the time of failure, it had 4459 hours since overhaul. Metallurgical study of the swivel pin revealed, 1) intergranular cracking thru 40% of pin cross-section, 2) evidence of stress corrosion from overtorquing the nut on threaded end of pin, 3) traces of copper, sometimes used before chromium plating during overhaul, found in crack, 4) no overload evidence in preexistant crack, and 5) indications that final fracture was due to overload.
Aircraft
- Registration
- N8048U
- Reported as
- McDonnell Douglas DC-8-54
- Category
- Airplane
- Serial number
- 45-881
- Engine
- P&W JT3D-3, 18,000 lbs thrust, turbo fan
- Damage
- Minor damage
- Flight
- Part 121
- Registered owner
- United Airlines
- Airworthiness certificate
- Standard, Transport
- Departed
- EWR · Newark, NJ
- Destination
- ORD · Chicago, IL
- Flight plan
- IFR
- Airport
- ORD · O'Hare, runway 14R, 11,600 × 200 ft, concrete
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Certificate
- Airline transport
- Airplane ratings
- Multi-engine land, Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 1, Valid Medical--no waivers/lim.
- Seat
- Left
Weather
- Conditions
- Visual (VMC) · Night/dark
- Wind
- 220° at 5 knots
- Visibility
- 15 statute miles
- Lowest ceiling
- 10,000 ft broken
- Temperature
- 66 °F, dew point 64 °F
- Altimeter
- 29.00 inHg
- Observed at
- ORD
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.