NTSB CAROL · Event
Event CHI93IA069
Registry · N433AW
FAA Aircraft Registry record.
Make / Model
BOMBARDIER INC CL-600-2B19
Year of manufacture
1999
Engine
GE CF34 SERIES
Seats / Engines
55 seats · 2 engines
Last airworthiness date
19990127
ADS-B equipped
Yes — Mode-S A52E58
Registrant of record
AIR WISCONSIN AIRLINES LLC
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
THE TOTAL FAILURE OF THE INBOARD RIGHT MAIN LANDING GEAR WHEEL AXLE DURING THE INITIAL CLIMB.
Factual narrative
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. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1993_CHI93IA069.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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