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19920825050879A

Accident · Destroyed
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FAA accident report · Helio H-391B · Everett, WA · August 25, 1992

FAA Aviation Safety Information Portal

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Date
August 25, 1992 · 20:40 local
Place
Everett, WA
Airport
Snohomish County - Paine Fld
Operating rules
General operating rules (Part 91)
Damage
Destroyed
Aircraft
N4431U
NTSB investigation
NTSBSEA92LA191
Reported as
Helio H391B
Reported engine
Lycoming GO435
People aboard
1
Fatal injuries
0
Pilot’s flight hours
3,000 total190 in this make and model30 in the last 90 days
N4431URegistered now · Helio H-391BS/N 091Airframe modelHelio H-391B

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry by N-number and event date, checked against the reported make and model; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

Lost partial power. Unable reach airport. Ditched in bay. NR4 exhaust valve was seized in open position.

As the FAA filed it

LOST PARTIAL POWER. UNABLE REACH AIRPORT. DITCHED IN BAY. NR4 EXHAUST VALVE WAS SEIZED IN OPEN POSITION.

NTSB investigation

The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.

NTSB SEA92LA191Accident · No injuriesLimited investigationFinal reportEdmonds, WAThe partial loss of engine power when an exhaust valve seized in the open position and the water where the pilot was forced to land, which resulted in an acft nose over on touchdown.Aug 26, 1992 · Destroyed

Other reports on N4431U · 2

Matched to the same aircraft by N-number and date.

Accident 20250818013389ALanding: Touchdown · Monroe, MIPilot lost control attempting to land with a crosswind. The aircraft turned 90 degrees right into the wind and skidded on the left main wheel. Upon exiting the runway and coming into contact with the grass, the left main landing gear snapped off and the…Aug 18, 2025 · Substantial damageAccident 19831119063709ARoll-Out (Fixed Wing) · Hood River, ORPilot gound looped aircraft during landing when he attempted high speed turn off of runway.Nov 19, 1983 · Substantial damage