SEA96LA163

NTSB accident investigation · Cessna 152 · Stehekin, WA · July 23, 1996

Accident · Serious injuriesLimited investigationFinal report
Date
July 23, 1996, 14:15 local (21:15 UTC)
Place
Stehekin, WA
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N49794Cessna 152
Weather
Visual (VMC) · Day
Status
Completed · report February 28, 1997
Report
Approved by Office Director
FAA report
19960723019569A
Case key
42425

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 pilot's improper planning/decision, and his failure to ensure that the airplane would remain clear of trees during the takeoff. Factors relating to the accident were: high density altitude, and the proximity of trees to the runway.

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 collision with objectTakeoff - initial climb
Planning/decision - improperPilot in commandCause
Weather condition - high density altitudeFactor
Object - tree(s)Factor
Altitude/clearance - not maintainedPilot in commandCause

Analysis

While departing from a dirt runway in mountainous terrain, the airplane hit trees at the departure end of the runway. The pilot stated that the airplane seemed to have good speed on the takeoff roll; however, by the time he was over the trees at the end of the runway, the stall warning buzzer was sounding. The pilot said he could not get the airplane to clear the trees. The airport elevation was 1230 feet msl. Weather at the time was reported by the pilot to be 85 degrees with a pressure reading of 30.00. Under these conditions, the density altitude was about 3080 ft.

Factual narrative

On July 23, 1996, approximately 1415 Pacific Daylight time, a Cessna 152, N49794, operated by Apple Valley Air in Omak, WA, sustained substantial damage when it impacted trees near Stehekin State Airport near Stehekin, WA. Visual meteorological conditions prevailed and no flight plan had been filed. The private pilot, the sole occupant, was seriously injured. The 14 CFR 91 personal flight was on takeoff from Stehekin to Omak, Washington when the aircraft hit trees.

During a telephone interview with the pilot, he stated that he seemed to have good speed on the takeoff roll. However, by the time he was over the trees at the end of the runway, he said that the stall warning buzzer was sounding and he could not clear the trees. In the pilot's accident report he stated that "Power stall on takeoff, hit tops of trees at 40 knots, flash engine fire immediately, plane then fell approx 30ft."

The Stehekin State Airport is at 1230 feet MSL. Weather at the time was reported by the pilot to be 85 degrees with a pressure reading of 30.00. Under these conditions the density altitude was about 3080 ft. The operator estimated the fuel on board at takeoff was about 19 to 21 gallons.

Aircraft

Registration
N49794
Reported as
Cessna 152
Category
Airplane
Serial number
15281319
Airframe hours
3,593
Engine
Lycoming O-235, 115 horsepower, reciprocating
Damage
Substantial damage
Fire
On-Ground
Flight
Personal · Part 91
Registered owner
Sandefur, Bobby G.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · August 4, 1995 · 86 hours before
Destination
OMK · Omak, WA
Airport
6S9 · Stehekin State, runway 32, 2,700 × 60 ft, dirt

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
56
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
110 total · 30 in this make and model · 20 in the last 90 days · 3 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
90° at 4 knots
Visibility
50 statute miles
Lowest ceiling
None
Temperature
84 °F
Altimeter
30.00 inHg

FAA reports on this event · 1

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