- Date
- August 11, 2019, 18:30 local (Aug 12, 2019, 02:30 UTC)
- Place
- Anchorage, AK
- Injuries
- 1 minor
- Damage
- Substantial damage
- Phase of flight
- Takeoff
- Aircraft
- N91402Cessna 180
- Defining event
- Takeoff: Collision during takeoff/land
- Weather
- Visual (VMC) · Day
- Status
- Completed
- Report
- Approved by Office Director
- Investigation class
- Class 3
- NTSB office
- Alaska Regional Office
- Parties
- FAA
- FAA report
- 20190812015599A
- Case key
- 100046
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 takeoff heading due to sun glare, which resulted in his inability to see an island adjacent to the water lane and subequent impact with the island.
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 airline transport pilot was taking off from a seaplane base. Once the airplane was on step during the takeoff run to the west, the sun was in the pilot’s line of sight and he was unable to distinguish the lake’s southern water channel or see a small island in the water lane because the glare was too bright. Subsequently, the airplane struck the southeastern side of the island, nosed over, and sustained substantial damage to the empennage, 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
On August 12, 2019, about 1830 Alaska daylight time, a float-equipped Cessna 180 airplane, N91402, impacted the southeastern shoreline of Gull Island during takeoff from the Lake Hood Seaplane Base (LHD) Anchorage, Alaska. The airline transport pilot, the sole occupant, sustained minor injuries, and the airplane sustained substantial damage. The airplane was registered to and operated by the pilot under the provisions of Title 14 Code of Federal Regulations Part 91 as a visual flight rules personal flight. Day visual meteorological conditions prevailed at the time of the accident, and no flight plan was filed. The flight originated from LHD, about 1830. The Lake Hood Seaplane base is comprised of two smaller lakes; Lake Hood to the west and Lake Spenard to the east, and the two lakes are connected by means of a canal. A small landmass situated within the canal, known as Gull Island, separates a water lane to the south, and a taxi lane to the north. Airplanes taking off and landing use the southern water lane. According to the pilot, during the takeoff run to the west from Lake Spenard, once the airplane was on step, the sun was in his line of sight. He added that, the glare was too bright, and he was unable to distinguish the southerly water channel or see Gull Island. Subsequently, the airplane struck the southeastern side of the island, nosed over, and sustained substantial damage to the empennage, fuselage, and both wings. The pilot added that, he believed that if the floatplane had not been so heavily loaded, the floats "might" have successfully cleared the island. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.
Aircraft
- Registration
- N91402
- Reported as
- Cessna 180 (H)
- Category
- Airplane
- Serial number
- 18052070
- Built
- 1969
- Airframe hours
- 4,031.7
- Engine
- Continental O-470-R, 230 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Annual · June 1, 2018
- Departed
- LHD · Anchorage, AK
- Destination
- Mat-Su Borough, AK
- Airport
- LHD · Lake Hood, runway W, 4,541 × 188 ft, water
- Equipment
- Handheld GPS, Stall warning system, ADS-B
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
- 84
- Injuries
- Minor
- Certificates
- Commercial, Airline transport
- Airplane ratings
- Single-engine sea, Single-engine land, Multi-engine land
- Instrument ratings
- Airplane
- Medical
- BasicMed, With waivers/limitations
- Seat
- Left
- Restraint
- 4-point
- Flight hours
- 8,453 total · 771 in this make and model
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 300° at 7 knots
- Visibility
- 10 statute miles
- Temperature
- 73 °F, dew point 55 °F
- Observed at
- PANC, 2 nm away
Docket · 2
The files NTSB released with the investigation on November 7, 2019, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.8 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 N91402 · 2
Matched to the same aircraft by N-number and date.