ERA10CA465

NTSB accident investigation · Stearman E75 · Jackson, GA · September 4, 2010

Accident · No injuriesData collectionFinal report
Date
September 4, 2010, 09:07 local (13:07 UTC)
Place
Jackson, GA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N1370VStearman E75
Defining event
Maneuvering: Aerodynamic stall/spin
Weather
Visual (VMC) · Day
Status
Completed · report June 13, 2011
Report
Approved by Office Director
NTSB office
Eastern Region Aviation
Parties
FAA/FSDO
FAA report
20100904048109A
Case key
77195

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 diverted attention toward an unsecured engine cowl door after takeoff which resulted in his failure to maintain airspeed and altitude. Contributing to the accident was the pilot’s inadequate preflight inspection of the airplane.

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.

Performance/control parameters: airspeedAircraft › Aircraft oper/perf/capability · Not attained/maintainedBoeing E75: 3 casesAll aircraft: 1,681 casesProbable cause
Inspection: preflight inspectionPersonnel issues › Task performance · PilotBoeing E75: 1 caseAll aircraft: 551 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

According to the pilot, after takeoff, at an altitude of 100 feet above the ground, the engine’s right side cowling door became unsecured. He stated that the door was banging in the air flapping onto the top of the cowling. As the pilot began to maneuver toward the airport to land, the cowling started to move to the closed position, and the pilot attempted to further close the door with rudder input. The pilot stated that he was fixated on keeping the cowling closed and inadvertently let the airspeed slow to the point that the airplane started to descend rapidly. The pilot applied full power to recover, but did not have enough altitude to regain flying speed. The airplane impacted trees, resulting in substantial damage to the upper and lower wings. The pilot stated that there were no mechanical malfunctions or anomalies with the airplane. A Federal Aviation Administration inspector examined the cowling camlocks and found them to be in good condition.

Factual narrative

According to the pilot, after takeoff, at an altitude of 100 feet, the engine’s right side cowling door became unsecured. He stated that the door was flopping wildly and "banging into the air intake on top of the cowling. As the pilot began to maneuver toward the airport to land, the cowling started to move to the closed position, and the pilot attempted to further close the door with some slight rudder input. The pilot stated that he was fixated on keeping the cowling closed and let the airspeed slow to the point that the airplane started to sink. The pilot applied full power to recover, but did not have enough altitude to regain flying speed. The airplane impacted trees, resulting in substantial damage to the upper and lower wings. The pilot stated that there were no mechanical malfunctions or anomalies with the airplane. A Federal Aviation Administration inspector examined the cowling camlocks and found them to be in good condition.

Aircraft

Registration
N1370V
Reported as
Stearman E75 (N1)
Category
Airplane
Serial number
75-5185
Airframe hours
9,163
Engine
Continental W670-6N, 220 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
James G Ratliff
Registered owner
James G Ratliff
Airworthiness certificate
Standard, Normal
Last inspection
Annual · February 1, 2010
Departed
62GA · Jackson, GA
Destination
THA · Tullahoma, TN
Airport
62GA · Seven Lakes Airport, runway 18, 2,900 × 130 ft, grass/turf

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
66
Injuries
None
Certificates
Airline transport, Flight engineer
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, With waivers/limitations
Last flight review
April 28, 2010
Seat
Rear
Flight hours
22,920 total · 1,300 in this make and model · 14,130 as pilot in command · 11 in the last 90 days · 3 in the last 30 days · 0 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
340° at 6 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
73 °F, dew point 61 °F
Altimeter
30.02 inHg
Observed at
OPN, 28 nm away

Docket · 3

The files NTSB released with the investigation on October 19, 2010, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.2 MB 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.

Other investigations on N1370V · 1

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