Tuesday, February 06, 2018

Just Aircraft JA30 SuperSTOL, N726AD, Dahlgren Family LLC: Accident occurred February 05, 2018 at Kerrville Municipal Airport (KERV), Kerr County, Texas

Additional Participating Entity:
Federal Aviation Administration / Flight Standards District Office; San Antonio, Texas

Aviation Accident Final Report - National Transportation Safety Board: https://app.ntsb.gov/pdf 

Investigation Docket - National Transportation Safety Board: https://dms.ntsb.gov/pubdms 

Dahlgren Family LLC: http://registry.faa.gov/N726AD

Aviation Accident Final Report - National Transportation Safety Board 

Location: Kerrville, TX
Accident Number: GAA18CA118
Date & Time: 02/05/2018, 1545 CST
Registration: N726AD
Aircraft Damage: Substantial
Defining Event: Loss of control on ground
Injuries: 1 None
Flight Conducted Under: Part 91: General Aviation - Personal 

The pilot reported that, during landing in crosswind conditions, a wind gust "initiated" a ground loop and the airplane exited the runway to the left.

The airplane sustained substantial damage to the fuselage and empennage.

The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

A review of recorded data from the automated weather observation station located on the airport reported that, about 10 minutes before the accident, the wind was from 200° at 13 knots, gusting 17 knots. The airplane landed on runway 12. 

Probable Cause and Findings

The National Transportation Safety Board determines the probable cause(s) of this accident to be:
The pilot's failure to maintain directional control during the landing roll in gusting crosswind conditions.


Directional control - Not attained/maintained (Cause)

Personnel issues
Aircraft control - Pilot (Cause)

Environmental issues
Gusts - Effect on operation
Crosswind - Effect on operation

Factual Information

History of Flight

Other weather encounter
Loss of control on ground (Defining event)
Runway excursion

Pilot Information

Certificate: Private
Age: 43, Male
Airplane Rating(s): Multi-engine Land; Single-engine Land
Seat Occupied: Left
Other Aircraft Rating(s): None
Restraint Used: 4-point
Instrument Rating(s): Airplane
Second Pilot Present: No
Instructor Rating(s): None
Toxicology Performed: No
Medical Certification: Class 3 Without Waivers/Limitations
Last FAA Medical Exam: 08/25/2016
Occupational Pilot: No
Last Flight Review or Equivalent: 09/13/2016
Flight Time:  (Estimated) 1068 hours (Total, all aircraft), 72 hours (Total, this make and model), 883 hours (Pilot In Command, all aircraft), 8 hours (Last 90 days, all aircraft), 8 hours (Last 30 days, all aircraft), 6 hours (Last 24 hours, all aircraft) 

Aircraft and Owner/Operator Information

Aircraft Manufacturer: SOMERTON DAVID J
Registration: N726AD
Aircraft Category: Airplane
Year of Manufacture: 2014
Amateur Built: Yes
Airworthiness Certificate: Experimental
Serial Number: JA398-07-14
Landing Gear Type: Tricycle
Seats: 2
Date/Type of Last Inspection: 11/03/2017, Condition
Certified Max Gross Wt.: 1320 lbs
Time Since Last Inspection:
Engines: 1 Reciprocating
Airframe Total Time: 88.9 Hours as of last inspection
Engine Manufacturer: ROTAX
ELT: C126 installed, not activated
Engine Model/Series: 914UL
Rated Power: 115 hp
Operator: On file
Operating Certificate(s) Held: None 

Meteorological Information and Flight Plan

Conditions at Accident Site: Visual Conditions
Condition of Light: Day
Observation Facility, Elevation: KERV, 1617 ft msl
Observation Time: 2135 UTC
Distance from Accident Site: 0 Nautical Miles
Direction from Accident Site: 39°
Lowest Cloud Condition: Clear
Temperature/Dew Point: 18°C / 10°C
Lowest Ceiling: None
Visibility:  10 Miles
Wind Speed/Gusts, Direction: 13 knots/ 17 knots, 200°
Visibility (RVR):
Altimeter Setting: 30.02 inches Hg
Visibility (RVV):
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: BROWNWOOD, TX (BWD)
Type of Flight Plan Filed: None
Destination: Kerrville, TX (ERV)
Type of Clearance: None
Departure Time: 1315 CST
Type of Airspace: Class G

Airport Information

Runway Surface Type: Asphalt
Airport Elevation: 1616 ft
Runway Surface Condition: Dry
Runway Used: 12
IFR Approach: None
Runway Length/Width: 6004 ft / 100 ft
VFR Approach/Landing: Full Stop 

Wreckage and Impact Information

Crew Injuries: 1 None
Aircraft Damage: Substantial
Passenger Injuries: N/A
Aircraft Fire: None
Ground Injuries: N/A
Aircraft Explosion: None
Total Injuries: 1 None
Latitude, Longitude:  29.976944, -99.089167 (est)

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