Trail Ridge Air de Havilland DHC2 I accident
de Havilland DHC2 I · Accident during takeoff
From Lake Hood Seaplane Base (PALH) to Lake Hood Seaplane Base (PALH)
Event
- NTSB case
- ANC24LA060
- Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
- Accident
- InvestigationHow far the investigation had got when the record was published: preliminary, ongoing, final or completed. Unknown where the source does not say. Glossary
- Completed
- Event fatalities
- Unknown
- Ground fatalities
- Unknown
- OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
- Charter & commuter
- WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
- Visual Meteorological Cond
de Havilland DHC2 I
- Aircraft type
- de Havilland DHC2
- Category
- Airplane
- RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
- N6LU
- Operator
- Trail Ridge Air
- Onboard fatalities
- Unknown
- Route
- From Lake Hood Seaplane Base (PALH), Anchorage, AKTo Lake Hood Seaplane Base (PALH), Anchorage, AK
- Aircraft age
- About 68 years (built 1956)
- Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
- Part 135: Air Taxi & Commuter
- Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
- Takeoff
- Defining eventThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
- Miscellaneous/other
- Also codedOther events the NTSB coded in the sequence, such as a wire strike after a loss of power. Flight Findings uses them for its kinds of event. Glossary
- Tree(s)
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- Substantial
Cause areas
- Aircraft › Aircraft oper/perf/capability
- Environmental issues › Physical environment
- Personnel issues › Psychological
Approximate · Coordinates from the NTSB case API, which marks them as estimated or does not say; no uncertainty radius is established.
NTSB narrative
The pilot was departing from a shallow river in a float-equipped airplane. She reported that she was almost on step when the airplane suddenly veered to the left toward the riverbank. She reduced engine power to abort the takeoff, however the airplane impacted the riverbank and trees. The airplane sustained substantial damage to the left wing and fuselage. The pilot reported no pre-impact mechanical malfunctions or failures with the airplane that would have precluded normal operation. In the pilot’s written statement, she reported that the airplane’s floats likely encountered the shallow river bottom during the takeoff run, resulting in the sudden left veer.
Probable cause
The pilot’s selection of an unsuitable takeoff area, resulting in the floats contacting the shallow river bottom during takeoff, and a subsequent loss of control.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record ANC24LA060
- Event ID
- 20240703194608
- Case number
- ANC24LA060
- Dataset
- full-current
- Source SHA-256
- 5cf380f0061817c0331a6b2d8cc7e0ee3a79bea469a1001dc5c10e56f35f5ab3
Source notes (4)
- Unreviewed is an editorial label, not an investigation status. API-sourced is not report-checked or human-reviewed. Explicit event totals are used without summing aircraft injury tables; onboard allocation is withheld. Unknown values remain unknown. The operation category is mapped from the NTSB-reported FAR part and has not been reviewed.
- Filled from the NTSB case API where the bulk record had no value: investigation status, coordinates, cause areas. Values present in the bulk record are kept.
- The date is the local date, which is the same as the UTC date the NTSB stores.
- API snapshot SHA-256: 0da6213496cc2b8e90b95e0b60f550e3037915b99477bffa64659bae879be31b; retrieved 2026-09-16T19:00:13.120Z.