- Date
- July 7, 2023, 17:00 local (23:00 UTC)
- Place
- Fremont Island, UT
- Injuries
- 2 uninjured
- Damage
- Substantial damage
- Phase of flight
- Landing
- Aircraft
- N1664DCessna 170B
- Defining event
- Landing-landing roll: Loss of control on ground
- Weather
- Visual (VMC) · Day
- Status
- Completed
- Report
- Approved by Office Director
- Investigation class
- Class 4 - Basic report with no Prelim publish
- NTSB office
- Western Pacific Region
- Parties
- FAA
- FAA report
- 20230707011689A
- Case key
- 192576
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
The pilot undergoing instruction’s excessive application of asymmetrical braking during landing, which resulted in a ground loop.
Findings · 2
NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.
Sequence of events
The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.
Analysis
According to the flight instructor, during the landing roll the pilot undergoing instruction applied asymmetrical braking and locked the left brake. This led to a ground loop. The airplane sustained substantial damage to the right wing. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.
Aircraft
- Registration
- N1664D
- Reported as
- Cessna 170B
- Category
- Airplane
- Serial number
- 20306
- Airframe hours
- 4,146.11
- Engine
- Continental O-300, reciprocating
- Damage
- Substantial damage
- Flight
- Instructional · Part 91
- Operator
- Scud Air Solutions LLC
- Registered owner
- Scud Air Solutions LLC
- Airworthiness certificate
- Standard, Normal
- Last inspection
- 100 hour · May 13, 2023
- Departed
- KOGD · Ogden, UT
- Destination
- KOGD · Ogden, UT
- Airport
- 89D · Freemont Island Lower, runway 09, 1,828 × 10 ft, gravel
- Equipment
- ADS-B, Video recording device, Handheld GPS, Stall warning system
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 · 2
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 39
- Injuries
- None
- Certificates
- Commercial, Flight instructor
- Airplane ratings
- Single-engine land, Multi-engine land
- Instrument ratings
- Airplane
- Medical
- Class 1, With waivers/limitations
- Last flight review
- August 31, 2022
- Seat
- Right
- Restraint
- Lap only
- Flight hours
- 5,890 total · 295 in this make and model · 3,610 as pilot in command · 118 in the last 90 days · 29 in the last 30 days · 4 in the last 24 hours
- Role
- Pilot
- Age
- 40
- Injuries
- None
- Certificate
- Commercial
- Airplane ratings
- Multi-engine land, Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 2, Without waivers/limitations
- Last flight review
- September 16, 2021
- Seat
- Left
- Restraint
- Lap only
- Flight hours
- 424 total · 8 in this make and model
Weather
- Conditions
- Visual (VMC) · Day
- Temperature
- 93 °F, dew point 34 °F
- Altimeter
- 29.85 inHg
- Observed at
- KOGD, 16 nm away
- METAR
- METAR KOGD 072253Z VRB05KT 10SM CLR 34/01 A2985
Docket · 2
The files NTSB released with the investigation on January 4, 2024, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.3 MB in all.
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.