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Atlas / NTSB / GAA18CA581

NTSB CAROL · Event

Event GAA18CA581

2018-09-23 Kukaklek Lake, Alaska, United States Minor 1 aircraft Status: Completed

Registry · N9RW

FAA Aircraft Registry record.

Make / Model

DEHAVILLAND DHC-2 MK. I(L20A)

Engine

P&W R-985 SERIES (450 hp)

Seats / Engines

8 seats · 1 engine

Last airworthiness date

20011022

ADS-B equipped

Yes — Mode-S AC6C06

Registrant of record

RAINBOW RIVER LODGE AVIATION LLC

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

The pilot’s failure to see and avoid a sand bar during a water takeoff, which resulted in the airplane impacting a river bank.

Factual narrative

The pilot of the float-equipped airplane reported that, during landing on a river to pick up passengers, he observed that the river was low, and sand bars were visible. During takeoff, the left float contacted a sand bar in shallow water and the airplane impacted the river bank. The airplane sustained substantial damage to the left wing. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. The pilot of the float-equipped airplane reported that, during landing on a river to pick up passengers, he observed that the river was low and that sand bars were visible. During takeoff, the left float contacted a sand bar in shallow water, and the airplane impacted the river bank. The airplane sustained substantial damage to the left wing. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12

NTSB Findings

Hierarchical cause / factor breakdown from the FAA bulk avdata database. Each finding tagged C (Cause) or F (Factor).

  • C Personnel issues-Psychological-Attention/monitoring-Monitoring environment-Pilot - C
  • Environmental issues-Physical environment-Runway/land/takeoff/taxi surface-(general)-Effect on operation

Verbatim from NTSB's published report. Source file NTSB_2018_GAA18CA581.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.