- Date
- June 21, 2018, 10:20 local (18:20 UTC)
- Place
- Anchorage, AK
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Landing
- Aircraft
- N4427BCessna 170
- Defining event
- Landing: Loss of control on ground
- Weather
- Visual (VMC) · Day
- Status
- Completed · report March 18, 2019
- Report
- Approved by Office Director
- NTSB office
- General Aviation Accidents
- Parties
- FAA
- FAA report
- 20180621008349A
- Case key
- 97549
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 failure to maintain directional control during landing.
Findings · 3
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 pilot of the float-equipped airplane reported that, during landing, the touchdown on the water was smooth. While the airplane was on step, she reduced the flaps, and the airplane suddenly veered left. She applied right rudder and reduced engine power. The left float hit the concrete shore bank, the airplane spun to the left, and the right wing struck the shore. The airplane sustained substantial damage to the fuselage and both wings. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.
Factual narrative
The pilot of the float-equipped airplane reported that, during landing, the touchdown on the water was smooth. While the airplane was on step, she reduced the flaps and the airplane suddenly veered left. She applied right rudder and reduced engine power. The left float hit the concrete shore bank, the airplane spun to the left, and the right wing struck the shore. The airplane sustained substantial damage to the fuselage and both wings. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.
Aircraft
- Registration
- N4427B
- Reported as
- Cessna 170 (B)
- Category
- Airplane
- Serial number
- 26771
- Built
- 1955
- Airframe hours
- 4,352.9
- Engine
- Lycoming O-360-A1A, 180 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Annual · April 28, 2018
- Departed
- Skwentna, AK
- Destination
- LHD · Anchorage, AK
- Airport
- LHD · Lake Hood, runway W, 4,541 × 188 ft, water
- Equipment
- 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
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 57
- Injuries
- None
- Certificate
- Private
- Airplane ratings
- Single-engine land, Single-engine sea
- Medical
- Class 3, With waivers/limitations
- Last flight review
- October 6, 2017
- Seat
- Left
- Restraint
- None
- Flight hours
- 760 total · 670 in this make and model · 642 as pilot in command · 6 in the last 90 days · 6 in the last 30 days · 2 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- Calm
- Visibility
- 10 statute miles
- Temperature
- 61 °F, dew point 52 °F
- Altimeter
- 29.73 inHg
- Observed at
- PALH
Docket · 2
The files NTSB released with the investigation on October 2, 2018, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.2 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 N4427B · 1
Matched to the same aircraft by N-number and date.