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ANC24LA057

2024-06-28 · Juneau, Alaska, United States · None · 1 aircraft · Status: Completed

Airport JNU

Current FAA registration · N590DB

Make / Model
DEHAVILLAND-KENMORE DHC-2
Year of manufacture
1959 · 65 years old at event
Engine
P & W R-985-AN-14B (400 hp)
Seats / Engines
8 seats · 1 engine
Last airworthiness date
20210107
ADS-B equipped
Yes — Mode-S A79DB4

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

A partial loss of engine power during initial climb due to a cracked cylinder.

Factual narrative

The pilot reported after a normal takeoff in a float-equipped airplane, about treetop height, there was a loud bang and pulsing sensation, and the engine lost partial power. Unable to maintain altitude and return to the airport, the pilot performed a forced landing to the mud flats. The airplane sustained substantial damage to the elevator and horizontal stabilizer. Postaccident examination revealed the No. 9 cylinder was cracked. The last maintenance performed was about 90 hours before the accident, there were no anomalies noted at that time. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12

NTSB Findings

FAA avdata. C = Cause, F = Factor.

  • — Aircraft-Aircraft power plant-Engine (reciprocating)-Recip eng cyl section-Failure

Verbatim from NTSB's published report. Source file NTSB_2024_ANC24LA057.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

Search this event elsewhere

External sources are reported, not agency: signal that something happened, not fact about what happened.

Related research

Matched on aircraft type or causal vocabulary (maintenance). All research papers