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 October 4, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- June 21, 2022 · about 6:30 pm local time
- Place
- Kailua-Kona, Hawaii · Ellison Onizuka Kona Intl At K · 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
- 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 |
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 | View Download |
The same docket at the NTSB · documents without a copy here are fetched from the NTSB when you open them.
About this page
Everything above comes from the NTSB's public accident database: the narrative, probable cause and findings are the NTSB's own words, and the coded tables behind its report (pilot, aircraft, flight, weather, injuries, sequence of events) are written out in plain English. Pilots' ages, home towns and medical details are left out on purpose. The documents and photographs are the NTSB's docket, the folder of records gathered during the investigation, shown as the NTSB released them (the NTSB redacts some personal details first) and listed under the NTSB's own titles. This site's own text never names pilots, passengers or anyone else involved. A preliminary report describes what is known soon after the event and can change; the final report, with the probable cause, usually follows one to two years later and this page is refreshed when it does. Case number ANC22LA046.