SEA08CA088

NTSB accident investigation · American Champion 7GCAA · Tracy, CA · March 8, 2008

Accident · No injuriesData collectionFinal report
Date
March 8, 2008, 12:05 local (20:05 UTC)
Place
Tracy, CA
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N75SEAmerican Champion 7GCAA
Defining event
Maneuvering: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed · report April 30, 2008
Report
Approved by Office Director
Parties
Federal Aviation Adminsitration
FAA report
20080308011839A
Case key
67642

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 flight instructor's inadequate compensation for the tailwind condition and failure to maintain adequate airspeed that led to an inadvertent stall.

Findings · 3

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: tailwindEnvironmental issues › Conditions/weather/phenomena · Not specifiedAmerican Champion 7GCAA: 1 caseAll aircraft: 594 cases
Performance/control parameters: airspeedAircraft › Aircraft oper/perf/capability · Not attained/maintainedAmerican Champion 7GCAA: 1 caseAll aircraft: 1,681 casesProbable cause
Performance/control parameters: crosswind correctionAircraft › Aircraft oper/perf/capability · Not attained/maintainedAmerican Champion 7GCAA: 1 caseAll aircraft: 184 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 certified flight instructor (CFI) was demonstrating a simulated engine failure during takeoff initial climb by executing a 180-degree turn back to the airport. As the CFI was completing the maneuver, he initiated a go-around by applying full power. Subsequently the airplane stalled and impacted the runway in a left-wing low attitude. The CFI stated he was aware of the tailwind condition he would encounter as the airplane completed the 180-degree turn and that upon exiting the airplane, he noted the wind to be considerably higher than he had expected. Examination of the airplane revealed that the left and right wings sustained substantial damage. No anomalies were noted with the engine or flight control systems.

Factual narrative

The certified flight instructor (CFI) was demonstrating a simulated engine failure during takeoff initial climb by executing a 180-degree turn back to the airport. As the CFI was completing the maneuver, he initiated a go-around by applying full power. Subsequently the airplane stalled and impacted the runway in a left wing low attitude. The CFI stated he was aware of the tailwind condition he would encounter as the airplane completed the 180-degree turn and that upon exiting the airplane, he noted the wind to be considerably higher than he had expected. Examination of the airplane revealed that the left and right wings sustained substantial damage. No anomalies were noted with the engine or flight control systems.

Aircraft

Registration
N75SE
Reported as
American Champion 7GCAA
Category
Airplane
Serial number
495-2005
Airframe hours
913
Engine
Lycoming O-320-B2B, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
West Valley Flying Club
Registered owner
Andy's Flying Service
Airworthiness certificate
Standard, Aerobatic; Standard, Utility; Standard, Normal
Last inspection
100 hour · December 1, 2007
Departed
1Q4 · Palo Alto, CA
Airport
1Q4 · New Jerusalem Airport, runway 12, 3,530 × 60 ft, asphalt

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 · 2

As NTSB recorded them. NTSB leaves out names.

Role
Flight instructor
Age
55
Injuries
None
Certificates
Flight instructor, Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Seat
Rear
Flight hours
5,100 total · 700 in this make and model · 4,950 as pilot in command · 250 in the last 90 days · 70 in the last 30 days · 2 in the last 24 hours
Role
Student pilot
Age
35
Injuries
None
Certificate
Student
Medical
Class 3, With waivers/limitations
Seat
Front
Flight hours
129 total

Weather

Conditions
Visual (VMC) · Day
Wind
340° at 7 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
63 °F, dew point 48 °F
Altimeter
30.15 inHg
Observed at
KSCK, 10 nm away

FAA reports on this event · 1

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