ERA16LA236

NTSB accident investigation · Piper PA34 · Winnsboro, SC · June 29, 2016

Accident · No injuriesLimited investigationFinal report
Date
June 29, 2016, 12:30 local (16:30 UTC)
Place
Winnsboro, SC
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N44311Piper PA34
Defining event
Landing-flare/touchdown: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed · report June 20, 2017
Report
Approved by Office Director
NTSB office
Eastern Region Aviation
Parties
FAA/FSDO
FAA report
20160629018379A
Case key
93504

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 failure to maintain sufficient airspeed during a go-around, and the flight instructor's delayed remedial action, which resulted in the airplane exceeding its critical angle of attack and experiencing an aerodynamic stall. Contributing to the accident was the airplane's nose-up trim setting, which further increased its angle of attack upon application of engine power during the go-around.

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/maintainedPiper PA-34-200: 4 casesAll aircraft: 1,681 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotPiper PA-34-200: 6 casesAll aircraft: 9,295 casesProbable cause
Action: delayed actionPersonnel issues › Action/decision · Instructor/check pilotPiper PA-34-200: 4 casesAll aircraft: 894 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 flight instructor and commercial pilot were conducting a currency flight in the multi-engine airplane. After completing an instrument approach, they transitioned to a visual approach and prepared to land. The pilot flared the airplane too high, and the instructor advised the pilot to lower the nose and add power, which he did. The pilot again flared too high, and the instructor was concerned that the airplane was going to stall. The instructor started to reach for the controls when the pilot initiated a go-around. The instructor said the pilot simultaneously pushed both throttles forward and that the airplane suddenly rolled to the right at a height between 2 and 4 ft above the ground. The instructor did not take control of the airplane at any time. The airplane's right wing and main landing gear struck the ground, and the airplane veered off the right side of the runway. Postaccident examination of the airplane revealed no evidence of any preimpact mechanical deficiencies that would have precluded normal operation. The horizontal stabilator trim actuator was positioned toward the full nose-up position, which most likely resulted in the nose of the airplane pitching up farther than expected when the pilot added power, which increased the airplane's angle of attack and exacerbated its already critically slow airspeed, resulting in an aerodynamic stall.

Factual narrative

**This report was modified on March 25, 2020. Please see the public docket for this accident to view the original report.** On June 29, 2016, about 1230 eastern daylight time, a Piper PA-34-200, N44311, sustained substantial damage during an aborted landing at the Fairfield County Airport (FDW), Winnsboro, South Carolina. The flight instructor and the commercial pilot were not injured. The airplane was registered to and operated by a private company. No flight plan was filed for the flight that originated at FDW about 1020. Visual meteorological conditions prevailed for the instructional flight conducted under the provisions of 14 Code of Federal Regulations Part 91. The flight instructor stated that the accident flight was the first time he had flown with the commercial pilot and the purpose of the flight was to get him recurrent. The flight instructor said they had flown for about 2 hours before they returned to FDW and executed the RNAV approach to runway 22. When the airplane reached the decision altitude for the approach, they transitioned to a visual approach and prepared to land. The landing gear was already down and the flaps were extended to 25 degrees. The commercial pilot was at the controls and flared the airplane over the runway numbers, but was too high. He advised the commercial pilot to lower the nose and add power, which he did. The commercial pilot again flared too high and the flight instructor was concerned that the airplane was going to stall and started to reach for the controls when the commercial pilot initiated a go-around. The flight instructor said the commercial pilot simultaneously pushed both throttles forward and the airplane suddenly rolled to the right while at a height about 2- to 4 ft above the ground. The flight instructor, who never took the controls at any time, said it felt like the left engine was producing more power than the right engine. The airplane's right wing and main landing gear struck the ground. The airplane then veered off the right side of the runway, and spun about 180-degrees before coming to a stop upright. Postaccident examination of the airplane by a Federal Aviation Administration (FAA) inspector revealed the right wing and fuselage were substantially damaged. The landing gear, both engines, and their respective propellers were also damaged. Both engines and the airplane's fuel system were examined and no pre-impact mechanical deficiencies were noted that would have precluded normal operation at the time of the accident. Examination of the horizontal stabilator trim revealed it was positioned toward the full nose-up position. The flight instructor held a flight instructor certificate for airplane single and multiengine land, and instrument airplane. He also held an airline transport pilot rating for single-engine airplane. His last FAA second-class medical certificate was issued on March 7, 2016. He reported a total of 6,482 hours of flight experience. Of those hours, 780 were inmultiengine airplanes, of which, 500 hours were in the same make and model as the accident airplane. The commercial pilot held a commercial pilot certificate for airplane single and multiengine land, and instrument airplane. His last FAA second-class medical certificate was issued on June 21, 2016. He reported a total of 2,400 hours of flight experience. Of those hours, 1,900 hours were in multiengine airplanes, of which, 0 hours were in the same make and model as the accident airplane.

Aircraft

Registration
N44311
Reported as
Piper PA34 (200)
Category
Airplane
Serial number
34-7450206
Built
1974
Airframe hours
7,685
Engines
Lycoming IO360 SER, 200 horsepower, reciprocatingLycoming IO360 SER, 200 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · July 1, 2015 · 85 hours before
Departed
FDW · Winnsboro, SC
Destination
FDW · Winnsboro, SC
Airport
FDW · Fairfield County, runway 22, 5,003 × 100 ft, asphalt
Equipment
Auto-pilot, ADS-B, Stall warning system

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
64
Injuries
None
Certificates
Airline transport, Flight instructor, Private, Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
July 21, 2004
Seat
Right
Restraint
3-point
Flight hours
6,482 total · 500 in this make and model · 6,250 as pilot in command · 122 in the last 90 days · 95 in the last 30 days · 2 in the last 24 hours
Role
Pilot
Age
53
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Seat
Left
Restraint
3-point
Flight hours
2,400 total · 1 in this make and model · 0 in the last 90 days · 0 in the last 30 days · 0 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
310° at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
88 °F, dew point 64 °F
Altimeter
29.96 inHg
Observed at
FDW

Docket · 3

The files NTSB released with the investigation on April 19, 2017, on NTSB’s docket system: statements, records, photos and specialists’ reports. 5.3 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 N44311 · 1

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