- Date
- August 16, 1990, 15:30 local (19:30 UTC)
- Place
- Frederick, MD
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Landing
- Aircraft
- N8239ACessna 170B
- Weather
- Visual (VMC) · Day
- Status
- Completed · report December 30, 1992
- Report
- Approved by Office Director
- FAA report
- 19900816033219A
- Case key
- 11609
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
Fatigue failure of the left main gear wheel axle.
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 plt was doing his eleventh touch and go landing when the left main gear axle failed during the landing roll, causing the acft to ground loop. Examination of the acft revealed the axle was fractured at its flange junction. Metallurgical examination revealed fatigue corrosion on the fracture surface.
Aircraft
- Registration
- N8239A
- Reported as
- Cessna 170B
- Category
- Airplane
- Serial number
- 25091
- Airframe hours
- 3,200
- Engine
- Franklin O-300, 163 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Instructional · Part 91
- Operator
- Jon R. Shomer, Jr
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Unknown · April 23, 1990 · 0 hours before
- Departed
- FDK
- Destination
- FDK
- Airport
- FDK · Frederick, runway 23, 5,200 × 100 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
- 22
- Certificate
- Student
- Airplane ratings
- Single-engine land
- Medical
- Class 3, Valid Medical--no waivers/lim.
- Seat
- Left
- Flight hours
- 45 total · 13 in this make and model · 13 in the last 90 days · 1 in the last 30 days
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 150° at 5 knots
- Visibility
- 7 statute miles
- Lowest ceiling
- None
- Temperature
- 82 °F, dew point 64 °F
- Altimeter
- 30.10 inHg
- Observed at
- MRB, 28 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.