ERA12CA013

NTSB accident investigation · Loehle Loehle P-40 · Tullahoma, TN · October 3, 2011

Accident · Minor injuriesData collectionFinal report
Date
October 3, 2011, 17:15 local (22:15 UTC)
Place
Tullahoma, TN
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N414LLoehle Loehle P-40
Defining event
Takeoff: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed · report January 18, 2012
Report
Approved by Office Director
NTSB office
Eastern Region Aviation
Parties
FAA/FSDO
FAA report
20111003022749A
Case key
82011

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 delayed decision to abort the takeoff.

Findings · 2

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.

Action: delayed actionPersonnel issues › Action/decision · PilotLoehle LOEHLE P-40: 1 caseAll aircraft: 894 casesProbable cause
Flight control systemAircraft › Aircraft systems · Not specifiedLoehle LOEHLE P-40: 1 caseAll aircraft: 65 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

Shortly after taking off and the landing gear left the ground, the airplane entered a bank of about 10 degrees to the left. The pilot initially assumed that the bank had been induced by a crosswind, but the bank continued to increase as the airplane's speed increased. The pilot then leveled the airplane about 75 feet above the ground and slowed to 50 mph in an attempt to evaluate the control issues. While applying full right control stick and full right rudder, the bank would not decrease, so the pilot attempted to perform a forced landing with the bank angle about 45 degrees. When the pilot decreased engine power, the airplane nose rose, and the airplane stalled and spun to the left. The airplane subsequently impacted the ground, resulting in substantial damage to the nose, cockpit, and left wing. No broken flight control cables were found during a postaccident examination; however, due to the extent of impact-related damage to the airplane, operation of the ailerons could not be verified. When asked how the accident could have been prevented, the pilot suggested that a precautionary/aborted landing should have been undertaken upon the first indication of control issues during the takeoff. The airplane's ballistic parachute system did not activate.

Factual narrative

Shortly after initiating the takeoff and just after the landing gear of the experimental airplane left the ground, the airplane banked about 10 degrees left. The pilot initially assumed the bank had been induced by a crosswind, but the bank continued to increase as the airplane's speed increased. The pilot then leveled the airplane about 75 feet above the ground and slowed to 50 mph in an attempt to evaluate the control issues. While applying full right control stick and full right rudder, the bank would not decrease, so the pilot attempted to perform a forced landing with the bank angle now reaching about 45 degrees. When the pilot decreased engine power the nose of the airplane rose, the airplane stalled, and then spun to the left. The airplane subsequently impacted the ground resulting in substantial damage to the nose, cockpit, and left wing. The airplane was examined at the scene by a Federal Aviation Administration inspector. The inspector noted that the airplane's ballistic parachute system had not activated and he was not able to observe any broken flight control cables, but due to the extent of impact-related damage to the airplane, was unable to verify operation of the ailerons. When asked how the accident could have been prevented, the pilot stated, "Immediate precautionary/aborted landing should have been undertaken upon first indication of control issues on takeoff…"

Aircraft

Registration
N414L
Reported as
Loehle Loehle P-40
Category
Airplane
Serial number
P150968827WE-RG
Airframe hours
260
Engine
Rotax 582UL, 65 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · April 11, 2011
Departed
THA · Tullahoma, TN
Destination
THA · Tullahoma, TN
Airport
THA · Tullahoma Regional Airport, runway 36, 5,002 × 100 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

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
69
Injuries
Minor
Certificate
Private
Airplane ratings
Single-engine land, Multi-engine land
Medical
Class 3, With waivers/limitations
Seat
Single
Flight hours
4,350 total · 125 in this make and model · 3,640 as pilot in command · 6 in the last 90 days · 2 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
360° at 6 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
73 °F, dew point 39 °F
Altimeter
30.19 inHg
Observed at
MQY, 40 nm away

Docket · 7

The files NTSB released with the investigation on November 28, 2011, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.4 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.