NTSB CAROL · Event
Event ANC98LA038
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 ↗.
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