SEA94LA092

NTSB accident investigation · Grumman-Schweizer G-164B · Levan, UT · March 30, 1994

Accident · No injuriesLimited investigationFinal report
Date
March 30, 1994, 09:00 local (16:00 UTC)
Place
Levan, UT
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N6754QGrumman-Schweizer G-164B
Weather
Visual (VMC) · Day
Status
Completed · report December 7, 1994
Report
Approved by Office Director
FAA report
19940330007249A
Case key
41903

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

The left main landing gear wheel bearing broke resulting in the wheel jamming and the airplane nosing over.

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.

Airframe/component/system failure/malfunctionLanding - roll
Landing gear,wheel - jammedCause
Nose overLanding - roll
Aircraft control - not possiblePilot in command

Analysis

During landing the left wheel outer bearing broke and separated from the wheel axle. This allowed the brake caliper assembly to jam and restrict rotation of the wheel. The pilot was unable to maintain control of the aircraft and it nosed over.

Factual narrative

On March 30, 1994, approximately 0900 hours mountain standard time (MST), a Grumman-Schweizer G-164B "AgCat", N6754Q, registered to ATR, being operated by Spanish Fork Flying Service, and being flown by Rex Woodhouse, a certificated commercial pilot, nosed over while landing on a road approximately 10 miles south-southwest of Levan, Utah. The aircraft was substantially damaged and the pilot was uninjured. Visual meteorological conditions existed and no flight plan had been filed. The flight, which was engaged in aerial application, was to have been operated in accordance with 14CFR137.

The pilot reported that upon landing he heard a "snap" and the aircraft nosed over. Post crash examination by FAA inspector Jerry E. Roberts revealed that the left main wheel outer bearing (rollers and retainer cups) had broken apart (photograph 01). The outer bearing then separated from the wheel axle. The left brake caliper assembly subsequently released lodging against the left gear strut which restricted rotation of the wheel (photograph 02).

Aircraft

Registration
N6754Q
Reported as
Grumman-Schweizer G-164B
Category
Airplane
Serial number
265B
Airframe hours
4,155
Engine
P&W R-985-AN14B, 450 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
Spanish Fork Flying Service
Registered owner
Atr
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · July 20, 1993 · 35 hours before

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
50
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Center
Flight hours
15,000 total · 6,000 in this make and model · 14,900 as pilot in command · 45 in the last 90 days · 40 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
50 statute miles
Lowest ceiling
None
Temperature
41 °F, dew point 14 °F
Observed at
U24, 23 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.

Other investigations on N6754Q · 2

Matched to the same aircraft by N-number and date.