Rockwell International 114 accident near Kailua-Kona, Hawaii, June 21, 2022
On June 21, 2022 at about 6:30 pm local time, a 1977 Rockwell International 114, registered N4888W, was substantially damaged in an accident during landing (landing roll) near Kailua-Kona, Hawaii (Ellison Onizuka Kona Intl At K airport). It was a personal flight under general aviation rules (Part 91). No one was hurt; 1 person was on board or involved. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
The failure of the hydraulic power supply’s electric motor due to wear, which resulted in the left main landing gear and nose gear not fully extending and locking into place during landing. Contributing to the accident was the pilot's failure to adequately execute the emergency gear extension procedure.
Source: NTSB aviation accident database, copy made November 2, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- June 21, 2022 · about 6:30 pm local time · cases in 2022
- Place
- Kailua-Kona, Hawaii · Ellison Onizuka Kona Intl At K · cases near this airport · map
- Type
- Accident
- Injuries
- No one was hurt; 1 person was on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Rockwell International 114, built 1977 · all 114s on the register
- Registration
- N4888W · no longer on the register · serial 14218
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
The pilot reported that he was practicing pattern work and landings. After completing one landing, he back taxied, departed and entered the traffic pattern. While in the traffic pattern he lowered the landing gear; however, it did not extend properly. Multiple attempts to recycle the landing gear and manually extend the gear using the emergency extension procedure were not successful. He elected to return to a tower-controlled airport. The tower controller subsequently confirmed that the landing gear was only extended on the right side. The pilot executed an emergency landing which resulted in substantial damage to the left wing. Postaccident examination of the airplane revealed that the emergency gear extension handle was in the up and stowed position, and the emergency gear extension system worked as designed. The landing gear hydraulic power supply contained a reversible electric-motor driven hydraulic pump that was found inoperable. The electric motor was disassembled, and the brushes were found to be worn beyond limits. In addition, hydraulic fluid and dust were present on the permanent magnets, stator, and windings.
The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.
The factual record from the NTSB's investigation tables, in plain English
What happened, in order
- Landing gear collapse during landing (landing roll) defining event
The NTSB's findings
- Aircraft › Aircraft systems › Landing gear system › Gear extension and retract sys › Fatigue/wear/corrosion other cases naming the landing gear
- Personnel issues › Action/decision › Action › Forgotten action/omission › Pilot
Pilot
- Certificate: private
- Ratings: single-engine land; instrument: airplane
- Flight time: 2,200 hours in all; 78 in this make and model; 47 in the last 90 days; 7 in the last 30 days; 2,200 as pilot in command
- Last flight review: November 2, 2021
- Medical certificate: Class 3 (with waivers/limitations)
- Seat: left
- Injury: no injuries
The aircraft
- Airframe total time: 4,586.4 hours
- Last inspection: 100-hour inspection, March 5, 2021
- Maximum gross weight: 3,140 lb
- Seats: 4
- Landing gear: retractable
- Engine: Lycoming IO-540 (piston); 0 hours total
The flight
- Departed from: Waimea HI
- Flight plan: none
Weather at the time
- Light: daylight
- Wind: from 230° at 7 knots
- Visibility: 10 statute miles
- Sky: clear
- Temperature: 81°F (27°C), dew point 68°F (20°C)
- Altimeter: 30.03 inHg
- Observation at 8:53 am from PHKO
Weather report (METAR): PHKO 211853Z 23007KT 10SM CLR 27/20 A3003 RMK AO2 SLP167 T02720200
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Flight crew | 1 |
Photographs from the investigation 4 pictures from the NTSB's docket, as the NTSB released them
Photo 1 – Accident airplane at accident site. Photo
Photo 2 – Accident airplane’s substantially damaged left wing. Photo
Photo 3 – Accident airplane’s emergency landing gear selector. Photo
Photo 4 – Accident airplane’s landing gear hydraulic power supply’s reversible electric-motor with rotor removed. Photo provide by FAA.The NTSB's photographs with the NTSB's captions, at screen size. Open a picture to see it full size or to report one that should not be shown.
Documents from the investigation the NTSB's docket: the evidence folder behind the report
3 documents, released by the NTSB on November 7, 2022. View them here, or download them; the NTSB redacts some personal details before release, and this site shows the NTSB's own titles rather than its file names.
| # | Document | What it is | |
|---|---|---|---|
| 1 | Pilot/operator Aircraft Accident Report, NTSB Form 6120.1 | PDF, 7 pages | View Download |
| 2 | Wreckage Examination Summary | PDF, 2 pages | View Download |
| 3 | Photos | PDF, 5 pages · our copy | View Download |
The same docket at the NTSB · documents without a copy here are fetched from the NTSB when you open them.
Connections how this case links to the rest of the register
- N4888W: not on the register today · the record of its deregistration
- Rockwell International 114 207 registered today · the model family and its accident history
- Rockwell International 657 aircraft on the register
- Engine: Lycoming IO-540 4,223 aircraft carry this series today · as the NTSB recorded it
- Ellison Onizuka Kona International AT Keahole · nearest airport
- Accidents and incidents in Hawaii 524 since 1982 · 86 in the last ten years
- Hawaii 650 aircraft registered
The whole map of how records connect · these connections as data: /graph/accident/ANC22LA046.json.
The bigger picture in Aviation Analytics: accidents over time since 1982, by model, by phase of flight and conditions, by place and on the map.
Everything on this page comes from the NTSB's public records. The narrative, probable cause and findings are the NTSB's own words; the coded tables behind the report are written out in plain English, with pilots' ages, home towns and medical details left out. The documents and photographs are the NTSB's docket, shown as the NTSB released them. This site's own text does not name anyone involved, its policy at this time. A preliminary report can change; the final report usually follows one to two years later, and the page is refreshed when it does.