Just Aircraft JA30 SuperSTOL, N413Z
Fractured right strut
Damaged wing 
Additional participating entity:
Federal Aviation Administration / Flight Standards District Office; Honolulu, Hawaii
Aviation Accident Factual Report - National Transportation Safety Board: https://app.ntsb.gov/pdf
Investigation Docket - National Transportation Safety Board: https://dms.ntsb.gov/pubdms
http://registry.faa.gov/N413Z
Location: Kapolei, HI
Accident Number: WPR18LA065
Date & Time: 01/13/2018, 0945 HST
Registration: N413Z
Aircraft: Just JA30 SUPERSTOL
Aircraft Damage: Substantial
Defining Event: Landing gear collapse
Injuries: 1 None
Flight Conducted Under: Part 91: General Aviation - Personal
On January 13, 2018, at 0945 Hawaii-Aleutian standard time, an experimental JA30 Superstol airplane, N413Z, was substantially damaged during landing at Kalaeloa Airport /John Rodgers Field (PHJR), Kapolei, Hawaii. The private pilot was not injured. The airplane was registered to and operated by the pilot as a Title 14 Code of Federal Regulations Part 91 personal flight. Visual meteorological conditions prevailed and no flight plan was filed. The flight originated from Dillingham Airfield (PHDH), Mokuleia, Hawaii, at 0904.
The pilot reported in a written statement that during the landing at PHDH, he had some difficulty with the suspension system and the airplane ground looped. The pilot did a visual inspection of the airplane and found no damage. The pilot then took off and flew to PHJR for landing. After touchdown at a speed of about 30 mph, the airplane veered sharply and the right landing gear strut collapsed. After the accident, the pilot discovered that the right suspension strut separated from the airplane and it was found on the runway near the touchdown point.
The suspension strut was sent to the NTSB Materials Laboratory for examination. The metallurgist reported that the separation features were consistent with an overload type of failure.
Pilot Information
Certificate: Private
Age: 73, Male
Airplane Rating(s): Multi-engine Land; Single-engine Land
Seat Occupied: Left
Other Aircraft Rating(s): None
Restraint Used:
Instrument Rating(s): None
Second Pilot Present: No
Instructor Rating(s): None
Toxicology Performed: No
Medical Certification: Sport Pilot With Waivers/Limitations
Last FAA Medical Exam:
Occupational Pilot: No
Last Flight Review or Equivalent: 02/16/2017
Flight Time: (Estimated) 3465 hours (Total, all aircraft), 20 hours (Total, this make and model), 40 hours (Last 90 days, all aircraft), 15 hours (Last 30 days, all aircraft), 2.4 hours (Last 24 hours, all aircraft)
Aircraft and Owner/Operator Information
Aircraft Make: Just
Registration: N413Z
Model/Series: JA30 SUPERSTOL Undesignated
Aircraft Category: Airplane
Year of Manufacture: 2016
Amateur Built: Yes
Airworthiness Certificate: Experimental Light Sport
Serial Number: JA435-01-15
Landing Gear Type: Tailwheel
Seats: 2
Date/Type of Last Inspection: 01/01/2017, Annual
Certified Max Gross Wt.: 1320 lbs
Time Since Last Inspection:
Engines: 1 Reciprocating
Airframe Total Time: 61 Hours at time of accident
Engine Manufacturer: Rotex
ELT: Installed, not activated
Engine Model/Series: 912ULS
Registered Owner: On file
Rated Power: 100 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: PHNL, 7 ft msl
Distance from Accident Site: 8 Nautical Miles
Observation Time: 1853 UTC
Direction from Accident Site: 83°
Lowest Cloud Condition: Few / 7000 ft agl
Visibility: 10 Miles
Lowest Ceiling:
Visibility (RVR):
Wind Speed/Gusts: Calm /
Turbulence Type Forecast/Actual:
Wind Direction:
Turbulence Severity Forecast/Actual:
Altimeter Setting: 30.05 inches Hg
Temperature/Dew Point: 24°C / 18°C
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: Waialua, HI (HDH)
Type of Flight Plan Filed: None
Destination: Kapolei, HI (HJR)
Type of Clearance: VFR
Departure Time: 0904 HST
Type of Airspace: Class D
Airport Information
Airport: KALAELOA (JOHN RODGERS FIELD) (JRF)
Runway Surface Type: Asphalt; Concrete
Airport Elevation: 30 ft
Runway Surface Condition: Dry
Runway Used: 11
IFR Approach: None
Runway Length/Width: 6000 ft / 200 ft
VFR Approach/Landing: Traffic Pattern
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: 21.307222, -158.070278 (est)
Location: Kapolei, HI
Accident Number: WPR18LA065
Date & Time: 01/13/2018, 0919 HST
Registration: N413Z
Aircraft: LARRY JEFTS JA30 SUPERSTOL
Injuries: 1 None
Flight Conducted Under: Part 91: General Aviation - Personal
On January 13, 2018, at 0919 Hawaii standard time, an experimental JA30 Superstol, N413Z, was substantially damaged during a ground loop at Kalaeloa Airport /John Rodgers Field (JRF), Kapolei, Hawaii. The private pilot, the sole occupant, was not injured. The airplane was registered to and operated by the pilot under the provisions of 14 Code of Federal Regulations Part 91 as a personal flight. Visual meteorological conditions prevailed no flight plan had been filed.
The pilot reported that earlier that morning, during his first landing at Dillingham Airfield (PHDH), Mokuleia, Hawaii, the right strut "felt stiff" and the airplane behaved as it was trying to ground loop. After landing, the pilot performed a walk around inspection and stated that both landing gears appeared normal. He decided to fly the airplane back to JRF where his hangar was located. About 30 feet into the landing roll, the right strut collapsed and the airplane ground looped.
Aircraft and Owner/Operator Information
Aircraft Manufacturer: LARRY JEFTS
Registration: N413Z
Model/Series: JA30 SUPERSTOL NO SERIES
Aircraft Category: Airplane
Amateur Built: Yes
Operator: JEFTS LARRY
Operating Certificate(s) Held: None
Meteorological Information and Flight Plan
Conditions at Accident Site:
Condition of Light:
Observation Facility, Elevation: PHNL, 7 ft msl
Observation Time:
Distance from Accident Site: 8 Nautical Miles
Temperature/Dew Point:
Lowest Cloud Condition:
Wind Speed/Gusts, Direction:
Lowest Ceiling:
Visibility:
Altimeter Setting:
Type of Flight Plan Filed: None
Departure Point: Kapolei, HI (JRF)
Destination: Kapolei, HI (JRF)
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: 21.307222, -158.070278 (est)
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