ANC01LA080

NTSB accident investigation · Beech H35 · Chitina, AK · July 1, 2001

Accident · No injuriesLimited investigationFinal report
Date
July 1, 2001, 15:00 local (23:00 UTC)
Place
Chitina, AK
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N5429DBeech H35
Weather
Visual (VMC) · Day
Status
Completed · report May 21, 2002
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
Federal Aviation Administration
FAA report
20010701039859A
Case key
52631

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.

The pilot's inadequate compensation for wind conditions. Factors associated with the accident are variable winds, and a downdraft.

Analysis

The certificated private pilot said that the purpose of the flight was to show his friend some Alaskan scenery, in an area of mountainous, snow-covered terrain. As the flight progressed, the wind increased, and a strong downdraft caused the airplane to descend rapidly. The pilot applied full engine power in an attempt to climb, but the airplane continued to descend, rapidly lost airspeed, and subsequently collided with an area of snow-covered terrain.

Factual narrative

On July 1, 2001, about 1500 Alaska daylight time, a wheel-equipped Beech H35 airplane, N5429D, sustained substantial damage when it struck mountainous terrain, about 20 miles southwest of Chitina, Alaska. The airplane was being operated as a visual flight rules (VFR) personal flight under Title 14, CFR Part 91, when the accident occurred. The certificated private pilot, and the one passenger aboard, were not injured. Visual meteorological conditions prevailed, and no flight plan was filed. The flight originated at the Cordova Municipal Airport, Cordova, Alaska, about 1420.

During a telephone conversation with the NTSB investigator-in-charge on July 2, the pilot related that he and a friend were flying from Cordova, at 6,000 feet mean sea level, en route to a private airstrip located near Palmer, Alaska. He added that the purpose of the flight was to show his friend some Alaskan scenery. He said he thought the winds were fairly calm as he approached an area of mountainous, snow-covered terrain. While in level, cruise flight, he said the wind increased, and a strong downdraft caused the airplane to descend rapidly. He said he applied full engine power in an attempt to climb, but the airplane continued to descend, rapidly lost airspeed, and subsequently collided with an area of snow-covered terrain. The pilot noted that the airplane was damaged so severely that it may not be repairable. The pilot stated that there was no preaccident mechanical problems with the airplane.

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 - normal
Weather condition - variable windFactor
Compensation for wind conditions - inadequatePilot in commandCause
Weather condition - downdraftFactor
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - snow covered

Aircraft

Registration
N5429D
Reported as
Beech H35
Category
Airplane
Serial number
D 4922
Airframe hours
4,915.2
Engine
Continental O-470G, 240 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Walter P. Granus
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 23, 2001 · 6.8 hours before
Departed
CVD · Cordova, AK
Destination
PAQ · Palmer, AK

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
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Last flight review
June 21, 2001
Seat
Left
Flight hours
915 total · 307 in this make and model · 915 as pilot in command · 14 in the last 90 days · 7 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Visibility
20 statute miles
Temperature
54 °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 N5429D · 2

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