CEN19LA267

NTSB accident investigation · De Havilland DHC6 · San Marcos, TX · August 15, 2019

Accident · Minor injuriesClass 3 · LimitedFinal report
Date
August 15, 2019, 12:33 local (17:33 UTC)
Place
San Marcos, TX
Injuries
3 minor
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N322AVDe Havilland DHC6
Defining event
Approach-VFR go-around: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 3
NTSB office
Central Region
Parties
Federal Aviation Administration; San Antonio FSDO
FAA report
20190815017749A
Case key
100063

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 delayed go-around attempt and the flight instructor's delayed remedial action that resulted in a nose-down impact with terrain during an attempted go-around.

Findings · 6

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.

Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotDehavilland DHC-6-300: 4 casesAll aircraft: 9,295 casesProbable cause
Action: delayed actionPersonnel issues › Action/decision · PilotDehavilland DHC-6-300: 2 casesAll aircraft: 894 casesProbable cause
Action: delayed actionPersonnel issues › Action/decision · Instructor/check pilotDehavilland DHC-6-300: 2 casesAll aircraft: 894 casesProbable cause
Performance/control parameters: descent/approach/glide pathAircraft › Aircraft oper/perf/capability · Not attained/maintainedDehavilland DHC-6-300: 1 caseAll aircraft: 809 casesProbable cause
Performance/control parameters: climb rateAircraft › Aircraft oper/perf/capability · Not attained/maintainedDehavilland DHC-6-300: 1 caseAll aircraft: 265 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 airline transport pilot receiving company flight training was flying an approach; the airplane was too high and entered an increasing descent rate. The flight instructor told the pilot to go around, about the same time the pilot elected to go around. However, the pilot’s corrective control and power inputs did not arrest the descent rate, and the airplane impacted the ground, resulting in substantial damage to the left wing and fuselage. The operator reported there were no mechanical anomalies that would have precluded normal airplane operation.

Factual narrative

On August 15, 2019, at 1233 central daylight time, a De Havilland DHC-6-300 airplane, N322AV, impacted runway 13 during a go-around at San Marcos Regional Airport (HYI), San Marcos, Texas. The airplane sustained substantial damage. The airline transport pilot, flight instructor, and a passenger observer received minor injuries. The airplane was registered to Wells Fargo Trust CO NA Trustee and was operated by Berry Aviation, Inc. under Title 14 Code of Federal Regulations Part 91 as a company training flight that was operating on a visual flight rules flight plan. Visual meteorological conditions prevailed at the time of the accident. The local flight originated from HYI. The airline transport pilot, seated in the left seat pilot, was receiving company training and was the flying pilot during the accident flight. The left seat pilot stated they were practicing an ILS approach for landing with a full stop on runway 13. The airplane was configured with 20° of wing flaps for landing. He said the airplane was above the glidepath, and he transitioned his scan from the flight instruments to the outside visual environment. He lowered the nose when the airplane was about 100 ft above ground level and noted the airplane was slightly left of runway centerline. He attempted to align the airplane with the centerline and thought the airplane was getting fast, so he increased the airplane pitch attitude about 50 ft above ground level. The airplane was still high when it crossed over the runway numbers and the descent rate increased. He said the flight instructor called for a go-around at the same time he decided to initiate a go-around. The left seat pilot said he attempted to add airplane energy with forward control input, which cause the airplane to pitch down with not a lot of airspeed or altitude. The left seat pilot started to increase backpressure on the flight controls and add engine power but the airplane continued to descend into the ground. The airplane struck the ground in a nose down attitude and then veered off of the runway to the left, coming to rest in the grass. The left wing and fuselage sustained substantial damage. The company/operator reported there were no mechanical anomalies that would have precluded normal airplane operation.

Aircraft

Registration
N322AV
Reported as
De Havilland DHC6 (300)
Category
Airplane
Serial number
320
Built
1971
Airframe hours
32,258.8
Engines
Pratt & Whitney PT6A-27, 680 horsepower, turbo propPratt & Whitney PT6A-27, 680 horsepower, turbo prop
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
Berry Aviation, Inc.
Registered owner
Wells Fargo Trust Co Na Trustee
Airworthiness certificate
Standard, Normal
Last inspection
Continuous airworthiness · August 11, 2019
Departed
T82 · Fredericksburg, TX
Destination
HYI · San Marcos, TX
Flight plan
VFR
Airport
HYI · San Marcos Regional Airport, runway 13, 5,601 × 100 ft, asphalt
Equipment
Stall warning system, ADS-B, Satellite tracking device

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
Pilot
Age
35
Injuries
Minor
Certificate
Airline transport
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Without waivers/limitations
Last flight review
June 27, 2017
Seat
Left
Restraint
4-point
Flight hours
1,833 total · 2 in this make and model · 1,513 as pilot in command · 2 in the last 90 days · 2 in the last 30 days · 2 in the last 24 hours
Role
Flight instructor
Age
34
Injuries
Minor
Certificate
Airline transport
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Without waivers/limitations
Last flight review
May 29, 2019
Seat
Right
Restraint
4-point
Flight hours
1,775 total · 162 in this make and model · 1,364 as pilot in command · 32 in the last 90 days · 13 in the last 30 days · 7 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
None
Temperature
90 °F, dew point 77 °F
Altimeter
30.01 inHg
Observed at
HYI

Docket · 4

The files NTSB released with the investigation on October 9, 2020, on NTSB’s docket system: statements, records, photos and specialists’ reports. 4.0 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.