ANC99LA050

NTSB accident investigation · Luscombe L-8F · Kodiak, AK · April 26, 1999

Accident · Serious injuriesLimited investigationFinal report
Date
April 26, 1999, 13:32 local (21:32 UTC)
Place
Kodiak, AK
Injuries
1 serious, 1 minor
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N45627Luscombe L-8F
Weather
Visual (VMC) · Day
Status
Completed · report June 22, 2000
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19990426004069A
Case key
46157

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 inadequate terrain clearance during the initial climb, and the inadvertent stall/spin during the turn to avoid terrain. A factor in this accident was the pilot exceeding the allowable maximum gross weight of 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.

Loss of control - in flightManeuvering - turn to reverse direction
Aircraft weight and balance - exceededPilot in commandFactor
Altitude/clearance - inadequatePilot in commandCause
Stall/spin - inadvertentPilot in commandCause
In flight collision with terrain/waterDescent - uncontrolled
Object - tree(s)

Analysis

The pilot told the NTSB investigator-in-charge (IIC) he took off with the airplane at maximum gross weight. During the initial climb, he attempted to cross a ridge and realized the airplane was not gaining sufficient altitude to clear terrain. The pilot stated he turned the airplane toward the water in a steep bank. He indicated the airplane entered a spin, and dropped into the trees. He told the NTSB IIC the airplane was operating normally. No preaccident anomalies were found by the state troopers on scene, or by the NTSB metallurgy laboratory. The estimated weight of the airplane at the time of the accident was 1,484 pounds. The allowable takeoff weight was 1,375 pounds.

Factual narrative

On April 26, 1999, at 1332 Alaska daylight time, a float equipped Luscombe L-8F airplane, N45627, sustained substantial damage when it collided with trees, about 200 feet inland from Zachar Bay, approximately 25 miles southwest of Kodiak, Alaska. The private pilot sustained serious injuries, and the sole passenger received minor injuries. The airplane was operated by the pilot under 14 CFR Part 91 as a personal flight. The flight departed the pilot's cabin on Zachar Bay about 1330 for the local area. Visual meteorological conditions prevailed at the time of the accident, and no flight plan was filed.

The pilot told the NTSB investigator-in-charge during a telephone interview on April 27, and wrote in his NTSB Pilot/Operator report, that during the initial climb after takeoff, he attempted to cross a ridge. He recognized the airplane was not gaining sufficient altitude to clear the terrain. He told the NTSB IIC he turned the airplane toward the bay in a steep bank, and noticed the terrain was closer than he had thought. He remembered the airplane entering the first 1/2 turn of a spin, and dropping into the trees. Both occupants exited the airplane, the pilot made a distress call from his handheld radio, and they were picked up by a passing airplane within five minutes of the accident. The pilot said the airplane was at the maximum gross weight of 1,375 pounds, and both he and the passenger were wearing shoulder harnesses. The pilot also stated there were no preaccident mechanical anomalies with the airplane.

The pilot stated the engine was at full throttle, and the controls all functioned normally. The passenger told the NTSB IIC during a telephone interview on April 27, she thought she heard a snap and then the airplane did not want to stay in the air.

A pilot for the Alaska State Troopers who visited the site on April 27, described a separated elevator control cable, and a broken aileron bellcrank. These components were examined at the NTSB metallurgical laboratory, and revealed fracture surfaces indicative of overstress separation. No indications of progressive, or fatigue, failures were noted.

The state trooper pilot wrote in his case report he removed and weighed 75 pounds of cargo from the airplane. The trooper interviewed a friend of the accident pilot on April 29. According to the trooper, the pilot's friend said he went to the accident site on April 26 to secure the pilot's cabin, and removed the following items from the airplane: an 8 pound rifle, a 3 pound purse, a 5 pound survival pack, and 5 pound hip waders.

The pilot told the NTSB IIC the fuel tanks were full. The NTSB IIC estimated the takeoff weight of the airplane as follows: Empty weight of the airplane, 894 pounds, fuel, 180 pounds, pilot (from driver's license), 164 pounds, passenger (from driver's license), 150 pounds, cargo (removed by troopers), 75 pounds, cargo (removed by friends), 21 pounds, total at accident, 1,484 pounds, maximum allowable weight, 1,375 pounds.

Aircraft

Registration
N45627
Reported as
Luscombe L-8F
Category
Airplane
Serial number
2154
Airframe hours
5,518
Engine
Continental C90-12F, 90 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Christopher Kinter
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 13, 1998 · 148 hours before
Departed
Zachar Bay, AK
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
48
Certificate
Private
Airplane ratings
Multi-engine land, Single-engine sea, Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
4,000 total · 1,200 in this make and model · 4,000 as pilot in command · 72 in the last 90 days · 35 in the last 30 days · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
240° at 10 knots
Visibility
30 statute miles
Lowest ceiling
None
Temperature
48 °F

FAA reports on this event · 1

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