ANC03LA003

NTSB accident investigation · Maule M-7-235 · Wrangell, AK · October 17, 2002

Accident · Serious injuriesLimited investigationFinal report
Date
October 17, 2002, 10:20 local (18:20 UTC)
Place
Wrangell, AK
Injuries
1 serious
Damage
Destroyed
Phase of flight
Maneuvering
Aircraft
N5662SMaule M-7-235
Weather
Instrument (IMC) · Day
Status
Completed · report July 23, 2003
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
Federal Aviation Administration
FAA report
20021017030589A
Case key
55876

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

The pilot's inadequate weather evaluation, his continued flight into instrument meteorological conditions (IMC), and his failure to maintain adequate altitude/clearance from terrain/water, which resulted in a collision with water while maneuvering. Factors associated with the accident were fog and glassy water conditions.

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 weatherManeuvering - turn to reverse direction
Weather evaluation - inadequatePilot in commandCause
Weather condition - fogFactor
Vfr flight into imc - continuedPilot in commandCause
In flight collision with terrain/waterManeuvering - turn to reverse direction
Terrain condition - water,glassyFactor
Altitude/clearance - not maintainedPilot in commandCause

Analysis

The solo private pilot was departing in a float-equipped airplane for a flight over an area of open ocean water. During a phone interview the day after the accident, the pilot said that just after takeoff, while crossing a 1-mile wide channel of open water, he encountered a fog bank. He noted that the ocean water was "as smooth as glass." As the flight progressed, the visibility deteriorated to a point that he elected to turn around. During a left 180 degree turn, the airplane descended, collided with the ocean, broke apart, and sank. In the pilot's written statement to the NTSB, the pilot said that he suspected that the floats of the airplane had been sabotaged, which allowed water to enter the floats, which in turn extended the airplane's takeoff roll, and precipitated his encounter with the fog bank. In a written statement to the NTSB, a witness who could hear, but not see the accident airplane's takeoff, wrote, in part: "The fog at that time was so heavy and so thick that our dock, which is about 75 feet from where I was standing, was a slight shadow. It would have been zero visibility." The airplane wreckage sank in ocean waters estimated to be between 150 to 250 feet deep and has not been recovered.

Factual narrative

On October 17, 2002, about 1020 Alaska daylight time, a float-equipped Maule M-7-235 airplane, N5662S, was presumably destroyed during an in-flight collision with ocean waters, about 25 miles southeast of Wrangell, 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 solo private pilot sustained serious injuries. The pilot reported instrument meteorological conditions prevailed at the time of the accident, and no flight plan was filed. The flight originated about 1018, from a remote site, and was en route to Wrangell.

During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC) on October 18, the pilot reported that his anticipated flight to Wrangell was over various portions of open ocean water. He said that about 2 minutes after takeoff, while crossing a 1-mile wide channel of open water, he encountered a fog bank. He noted that the ocean water was "as smooth as glass." The pilot reported that as the flight progressed, the visibility deteriorated to a point that he elected to turn around. He said that during a left, 180 degree turn, the airplane descended and collided with the ocean. During the collision sequence, the airplane broke apart and sank. The pilot reported that as the cabin section of the airplane sank, his foot was stuck under the instrument panel. After the airplane was underwater, he was able to free himself from the wreckage and swim to the surface. A passing fishing boat rescued the pilot about 40 minutes after the accident and transported him to shore.

In the Pilot/Operator Aircraft Accident/Incident Report (NTSB Form 6120.1) submitted by the pilot, dated October 25, 2002, the pilot reported that he now suspected that the floats of the airplane had been sabotaged prior to his departure. He wrote, in part: "I suspect that the floats had been tampered with which allowed water to fill the forward floats, hence, my normal takeoff extended me closer to the fog bank, in which I slowly entered..."

On November 4, 2002, the NTSB IIC received a written witness statement concerning weather conditions during the accident airplane's takeoff. The witness wrote, in part: "The fog at that time was so heavy and so thick that our dock, which is about 75 feet from where I was standing, was a slight shadow. It would have been zero visibility."

The airplane wreckage sank in ocean waters estimated to be between 150 to 250 feet deep. According to the pilot, there are no plans to recover the airplane wreckage.

Aircraft

Registration
N5662S
Reported as
Maule M-7-235
Category
Airplane
Serial number
4025C
Engine
Lycoming IO-540, 235 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Registered owner
Charles L. Bateham
Airworthiness certificate
Standard, Normal
Last inspection
Annual · June 2, 2002
Departed
WRG · Wrangell, AK
Destination
WRG · Wrangell, 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
63
Injuries
Serious
Certificate
Private
Airplane ratings
Single-engine sea, Single-engine land
Medical
Class 3, Valid Medical--no waivers/lim.
Last flight review
March 17, 2002
Seat
Left
Flight hours
265 total · 175 in this make and model · 175 as pilot in command

Weather

Conditions
Instrument (IMC) · Day
Wind
Calm
Visibility
0 statute miles
Lowest ceiling
0 ft
Temperature
45 °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 N5662S · 1

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