- Date
- January 9, 1993, 07:19 local (13:19 UTC)
- Place
- Savoy, IL
- Injuries
- 40 uninjured
- Damage
- Minor damage
- Phase of flight
- Takeoff
- Aircraft
- N433AWde Havilland DHC-8-311
- Weather
- Visual (VMC) · Dawn
- Status
- Completed · report November 3, 1993
- Report
- Approved by Office Director
- FAA report
- 19930109000959I
- Case key
- 15593
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the incident.
On this page
Probable cause
The total failure of the inboard right main landing gear wheel axle during the initial climb.
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
The flight was delayed on the runway after the flight crew exceeded the power nosewheel steering range during a tight 180 degree turn into position. After several unsuccessful attempts to straighten the (castoring) nosewheel using differential power and brakes, the crew called for ground personnel to assist. Ground personnel reported the inboard wheel of the right main landing gear (#3 wheel) appeared to be leaning against the strut. The co-pilot stated the landing gear appeared normal and the flight departed. Shortly after liftoff, the #3 wheel fell to the ground. Postaccident examination revealed the fracture of the axle was the result of the degradation and failure of the #3 inner wheel bearing. There was evidence of water contamination in the wheel bearing grease.
Aircraft
- Registration
- N433AW
- Reported as
- de Havilland DHC-8-311
- Category
- Airplane
- Serial number
- 305
- Airframe hours
- 1,771
- Engine
- P&W PW123, 2,380 horsepower, turbo prop
- Damage
- Minor damage
- Flight
- Part 121
- Operator
- Air Wisconsin, Inc., doing business as United Express
- Registered owner
- Air Wisconsin, Inc.
- Airworthiness certificate
- Standard, Transport
- Last inspection
- Continuous airworthiness · January 7, 1993 · 7 hours before
- Departed
- CMI
- Destination
- ORD · Chicago, IL
- Flight plan
- IFR
- Airport
- CMI · U. Of I. Willard Apt, runway 4, 5,301 × 150 ft
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 42
- 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
- 10,676 total · 424 in this make and model · 152 in the last 90 days · 17 in the last 30 days · 4 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Dawn
- Wind
- 70° at 15 knots, gusting 25
- Visibility
- 20 statute miles
- Lowest ceiling
- 6,500 ft broken
- Temperature
- 27 °F, dew point 21 °F
- Altimeter
- 30.00 inHg
- Observed at
- CMI, 1 nm away
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.