ANC91LA093

NTSB accident investigation · Helio H-295 · Port Alsworth, AK · July 9, 1991

Accident · Minor injuriesLimited investigationFinal report
Date
July 9, 1991, 10:20 local (18:20 UTC)
Place
Port Alsworth, AK
Injuries
3 minor, 1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N456JHHelio H-295
Weather
Visual (VMC) · Day
Status
Completed · report December 4, 1992
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19910709027559A
Case key
5575

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

Failure of the pilot to maintain sufficient altitude and clearance from mountainous terrain. Factors related to the accident were: the rising terrain and a downdraft.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

In flight encounter with weatherCruise
Terrain condition - risingFactor
Weather condition - downdraftFactor
In flight collision with terrain/waterCruise
Terrain condition - mountainous/hillyFactor
Clearance - not maintainedPilot in commandCause

Analysis

The pilot stated that while flying at about 500 feet above mountainous terrain & approaching a saddle, the airplane encountered a downdraft. Despite the addition of full power, the airplane contined to descend until it contacted the ground & nosed over.

Aircraft

Registration
N456JH
Reported as
Helio H-295
Category
Airplane
Serial number
1231
Engine
Lycoming GO-480, 295 horsepower, reciprocating
Damage
Substantial damage
Flight
Business · Part 91
Operator
James K. Harrower
Registered owner
James K Harrower
Departed
NONE · Stony River, AK
Destination
NONE · Mulchatna River, AK
Flight plan
Company VFR

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
52
Certificate
Private
Airplane ratings
Multi-engine land, Single-engine land, Multi-engine sea, Single-engine sea
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Flight hours
10,042 total · 2,500 in this make and model · 10,042 as pilot in command · 166 in the last 90 days · 90 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
360° at 10 knots
Visibility
50 statute miles
Lowest ceiling
None
Temperature
-0 °F, dew point -0 °F

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.

Other investigations on N456JH · 1

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