SEA97LA048

NTSB accident investigation · Piper PA-28-161 · Sun River, OR · January 12, 1997

Accident · Minor injuriesLimited investigationFinal report
Date
January 11, 1997, 19:25 local (Jan 12, 1997, 03:25 UTC)
Place
Sun River, OR
Injuries
2 minor
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N8414BPiper PA-28-161
Weather
Visual (VMC) · Night/dark
Status
Completed · report May 30, 1997
Report
Approved by Office Director
FAA report
19970111000459A
Case key
42554

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

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Probable cause

The NTSB’s determination of the probable cause, and any contributing factors.

inadvertent VFR flight by the pilot into instrument meteorological conditions (IMC), and his failure to maintain altitude/clearance above moutainous/wooded terrain. Factors relating to the accident were: darkness, adverse weather conditions, and the proximity of mountainous terrain.

Analysis

The pilot, who was accompanied by a private pilot observer, descended through a hole in the clouds, while diverting from the planned destination due to en route weather conditions. During the descent, visual contact with the surface was lost. The pilot stated that as he resumed level cruise flight, they saw snow-covered trees and attempted to climb by adding full power and pitching up. Also, he said that when they saw that the terrain was rising faster than the airplane was climbing, they pulled back on the control wheel and made a power-on mushing flare into the pine trees and came to a stop in 3 feet of snow. The two pilots spent the night with the wreckage in winter conditions and were rescued the following morning.

Factual narrative

On January 11, 1997, approximately 1925 Pacific standard time, a Piper PA-28-161, N8414B, sustained substantial damage when it collided with trees and terrain during descent near Sunriver, Oregon. The two private pilots on board incurred minor injuries. A VFR flight plan was filed from Boise, Idaho, to Bend, Oregon. The flight departed Boise approximately 1700 mountain standard time. Visual meteorological conditions and dark night conditions prevailed at the time of the accident. The ELT operated and was used during the ensuing search for the aircraft.

The pilot-in-command stated that while en route they learned that Redmond airport was covered by a stratus cloud layer, so they decided to divert to Sunriver where some large holes had been reported by other aircraft. At that time, the sun was setting and it was getting dark. They were in radio contact with another flight school airplane which was about ten miles ahead of them on the same route to Bend. The pilots of that airplane informed them that they would be waiting for them over the openings in the undercast. When they arrived over a large hole, they made visual contact with the other aircraft as well as with some lights on the ground. At that time, it was full dark at their cruising altitude of 10,500 feet MSL (mean sea level).

The airplane ahead descended through the hole and minutes later reported back that he had been successful and was proceeding to Bend. The pilot then descended through the same hole, where he lost visual contact with the surface. The pilot stated that when he rolled out into level cruise flight, they saw snow-covered trees and attempted to climb by adding full power and pitching up. The pilot stated that when they saw that the terrain was outclimbing the airplane, they pulled back on the control wheel and made a power-on mushing flare into the pine trees and came to a stop in 3 feet of snow.

The pilots spent the night with the wreckage in winter inclement conditions and were rescued the following morning.

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
Light condition - dark nightFactor
Weather condition - cloudsFactor
Weather condition - low ceilingFactor
Vfr flight into imc - inadvertentPilot in commandCause
In flight collision with terrain/waterCruise
Terrain condition - mountainous/hillyFactor
Altitude/clearance - not maintainedPilot in commandCause

Aircraft

Registration
N8414B
Reported as
Piper PA-28-161
Category
Airplane
Serial number
28-8116268
Airframe hours
6,862
Engine
Lycoming O-320-D3G, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Registered owner
Lane Community College
Airworthiness certificate
Standard, Normal
Last inspection
AAIP · October 15, 1996 · 44 hours before
Departed
BOI · Boise, ID
Destination
S07 · Bend, OR
Flight plan
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
18
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
113 total · 40 in this make and model · 61 as pilot in command · 24 in the last 90 days · 6 in the last 30 days · 6 in the last 24 hours

Weather

Conditions
Visual (VMC) · Night/dark
Wind
340° at 8 knots
Visibility
10 statute miles
Temperature
37 °F
Altimeter
29.00 inHg
Observed at
KRD

FAA reports on this event · 1

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