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Atlas / NTSB / ANC98LA038

NTSB CAROL · Event

Event ANC98LA038

1998-04-15 DUTCH HARBOR, Alaska, United States None 1 aircraft Status: Completed

Registry · N22932

FAA Aircraft Registry record.

Make / Model

GRUMMAN G-21A

Year of manufacture

1946 · 52 years old at event

Engine

P&W R-985 SERIES (450 hp)

Seats / Engines

8 seats · 2 engines

Last airworthiness date

19780717

ADS-B equipped

Yes — Mode-S A2054C

Registrant of record

RUNYON AVIATION LLC

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

The pilot-in-command's failure to identify the swells prior to landing. A factor was the water swells.

Factual narrative

On April 15, 1998, at 1145 Alaska daylight time, a Grumman G-21 amphibious seaplane, N22932, sustained substantial damage during a water landing five miles northwest of the Unalaska Airport, Dutch Harbor, Alaska. There were no injuries to the airline transport certificated pilot, or the eight passengers. The flight was operated by Peninsula Airways, Inc., of Anchorage, Alaska, as scheduled commuter flight number 323. The flight was a return leg from Akutan, Alaska, and departed at 1120. Instrument meteorological conditions prevailed at the Unalaska Airport, and the flight was holding in visual meteorological conditions outside the Class-E surface area. The pilot stated during a telephone interview with the NTSB investigator-in-charge on April 15, 1998, that after holding for 15 minutes, he decided to land on the water in a protected bay to wait for improved weather. He reported the winds and seas as calm. After landing, the seaplane porpoised on a swell which the pilot had not identified. The left horizontal stabilizer struck the water during the porpoise and was damaged. The passengers were transported to Dutch Harbor via a rescue boat, and the seaplane was water taxied to the harbor. The pilot landed the seaplane in a protected bay in order to wait for the weather to improve at his destination. He said the wind and seas were calm; however, during landing, the seaplane encountered a swell. The seaplane porpoised, and the left horizontal stabilizer contacted the water. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1998_ANC98LA038.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.