ANC09CA056

NTSB accident investigation · Maule M-5-235C · Wasilla, AK · June 12, 2009

Accident · No injuriesData collectionFinal report
Date
June 12, 2009, 11:30 local (19:30 UTC)
Place
Wasilla, AK
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N407XMaule M-5-235C
Defining event
Initial climb: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed · report September 30, 2009
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
Federal Aviation Administration (Airworthiness)
FAA report
20090612047239A
Case key
74064

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 selection of an unsuitable takeoff area with an unfavorable wind.

Findings · 4

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Wind: variable windEnvironmental issues › Conditions/weather/phenomena · Effect on operationMaule M-5-235C: 1 caseAll aircraft: 113 cases
AircraftAircraft › Aircraft oper/perf/capability · Capability exceededMaule M-5-235C: 1 caseAll aircraft: 63 cases
WindEnvironmental issues › Conditions/weather/phenomena · Decision related to conditionMaule M-5-235C: 1 caseAll aircraft: 110 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

The pilot reported that he was departing to the southwest in a float-equipped airplane, operated under Title 14, Code of Federal Regulations Part 91. He said that variable south-southeasterly winds required a correction for a left crosswind during his takeoff run. As the airplane climbed to 70 feet above the water, the airspeed began to decrease, and the airplane stopped climbing as it neared the departure end of the lake. In the pilot's written statement to the NTSB he stated, in part: “It became apparent that the aircraft would not clear the trees at the end of the lake and there was insufficient room to land straight ahead.” The pilot indicated that as he turned the airplane to the left to avoid the trees, he lowered the nose to keep from stalling the airplane, and it descended at a high rate. The airplane’s floats struck the water, and the floats to fuselage struts collapsed. The airplane sustained substantial damage to the wings and wing lift struts. The pilot indicated that there were no preaccident mechanical problems with the airplane. He noted in his written statement to the NTSB that the accident might have been avoided if he had delayed his takeoff and waited for more favorable wind conditions, and if he had operated the airplane at a lower gross weight.

Factual narrative

The pilot reported that he was departing to the southwest in a float-equipped airplane, operated under Title 14, Code of Federal Regulations Part 91. He said that variable south-southeasterly winds required a correction for a left crosswind during his takeoff run. As the airplane climbed to 70 feet above the water, the airspeed began to decrease, and the airplane stopped climbing as it neared the departure end of the lake. In the pilot's written statement to the NTSB he stated, in part: “It became apparent that the aircraft would not clear the trees at the end of the lake and there was insufficient room to land straight ahead.” The pilot indicated that as he turned the airplane to the left to avoid the trees, he lowered the nose to keep from stalling the airplane, and it descended at a high rate. The airplane’s floats struck the water, and the floats to fuselage struts collapsed. The airplane sustained substantial damage to the wings and wing lift struts. The pilot indicated that there were no preaccident mechanical problems with the airplane. He noted in his written statement to the NTSB that the accident might have been avoided if he had delayed his takeoff and waited for more favorable wind conditions, and if he had operated the airplane at a lower gross weight.

Aircraft

Registration
N407X
Reported as
Maule M-5-235C
Category
Airplane
Serial number
7041C
Airframe hours
2,200
Engine
Lycoming O-540 SERIES, 235 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Holman Michael C
Registered owner
Holman Michael C
Airworthiness certificate
Standard, Normal
Last inspection
Annual · June 18, 2009 · 95 hours before
Departed
99Z · Wasilla, AK
Destination
Kenai, AK
Airport
99Z · Finger Lake Seaplane Base, runway 23

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
50
Injuries
None
Certificate
Airline transport
Airplane ratings
Single-engine sea, Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, With waivers/limitations
Seat
Left
Flight hours
12,000 total · 400 in this make and model · 4,000 as pilot in command · 200 in the last 90 days · 80 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
160° at 12 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
55 °F

Docket · 1

The files NTSB released with the investigation on August 6, 2009, on NTSB’s docket system: statements, records, photos and specialists’ reports. 673 KB in all.

FAA reports on this event · 1

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