- Date
- November 15, 2020, 12:00 local (18:00 UTC)
- Place
- Francis, OK · Sand bar on the Canadian River
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Landing
- Aircraft
- N9111Zlin Savage Cub-S
- Defining event
- Landing-landing roll: Nose over/nose down
- Weather
- Visual (VMC) · Day
- Status
- Completed
- Report
- Approved by Office Director
- Investigation class
- Class 4 - Basic report with no Prelim publish
- NTSB office
- Central Region
- Parties
- FAA Will Rogers FSDO, Air Accidents Investigation Institute
- FAA report
- 20201115021709A
- Case key
- 102372
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’s selection of unsuitable terrain for the landing, which resulted in a nose over when the airplane encountered soft sand during the landing roll.
Findings · 4
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
The private pilot reported that he was landing on a sand bar near a river, where he had previously landed several times before. During the landing roll after traveling about 100 ft, the airplane encountered soft sand, nosed over, and came to rest inverted. The airplane sustained substantial damage to both wings and the empennage. The pilot reported there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation.
Aircraft
- Registration
- N9111
- Reported as
- Zlin Savage Cub-S
- Category
- Airplane
- Serial number
- 260
- Built
- 2015
- Airframe hours
- 196.4
- Engine
- Continental Aerospace Technologies Titan X340, 180 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Airworthiness certificate
- Special, Experimental light sport (Special)
- Last inspection
- Annual · June 22, 2020
- Departed
- ADH · Ada, OK
- Destination
- Same as departure
- Airport
- None · Sand Bar - Canadian River
- Equipment
- Electronic multifunction display, Angle of attack indicator, ADS-B, Handheld GPS, Electronic primary flight display
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
- 54
- Injuries
- None
- Certificate
- Private
- Airplane ratings
- Single-engine land
- Medical
- BasicMed, With waivers/limitations
- Last flight review
- January 20, 2019
- Seat
- Front
- Restraint
- 4-point
- Flight hours
- 238 total · 101 in this make and model · 200 as pilot in command · 5 in the last 90 days · 3 in the last 30 days · 0.5 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 360° at 11 knots, gusting 16
- Visibility
- 10 statute miles
- Temperature
- 59 °F, dew point 18 °F
- Altimeter
- 30.31 inHg
- Observed at
- KADH, 8 nm away
- METAR
- KADH 020615Z AUTO 15009KT 10SM CLR 05/M05 A3008 RMK AO2
Docket · 2
The files NTSB released with the investigation on August 17, 2021, on NTSB’s docket system: statements, records, photos and specialists’ reports. 8.8 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.
Other investigations on N9111 · 1
Matched to the same aircraft by N-number and date.