- Date
- June 21, 2022, 08:30 local (18:30 UTC)
- Place
- Kailua-Kona, HI
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Landing
- Aircraft
- N4888WRockwell International 114
- Defining event
- Landing-landing roll: Landing gear collapse
- Weather
- Visual (VMC) · Day
- Status
- Completed
- Report
- Approved by Office Director
- Investigation class
- Class 4 - Basic report with no Prelim publish
- NTSB office
- Alaska Regional Office
- Parties
- Federal Aviation Administration
- FAA report
- 20220621010839A
- Case key
- 105320
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 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.
Findings · 2
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.
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 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.
Aircraft
- Registration
- N4888W
- Reported as
- Rockwell International 114
- Category
- Airplane
- Serial number
- 14218
- Built
- 1977
- Airframe hours
- 4,586.4
- Engine
- Lycoming IO-540, 260 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Registered owner
- Ellis Jeffrey Mark
- Airworthiness certificate
- Standard, Normal
- Last inspection
- 100 hour · March 5, 2021
- Departed
- Waimea, HI
- Destination
- Same as departure
- Airport
- KOA · Ellison Onizuka Kona Intl At Keahole
- Equipment
- Stall warning system, Handheld GPS, Auto-pilot, ADS-B
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
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 67
- Injuries
- None
- Certificate
- Private
- Airplane ratings
- Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 3, With waivers/limitations
- Last flight review
- November 2, 2021
- Seat
- Left
- Flight hours
- 2,200 total · 78 in this make and model · 2,200 as pilot in command · 47 in the last 90 days · 7 in the last 30 days · 1 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 230° at 7 knots
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Temperature
- 81 °F, dew point 68 °F
- Altimeter
- 30.03 inHg
- Observed at
- PHKO
- METAR
- PHKO 211853Z 23007KT 10SM CLR 27/20 A3003 RMK AO2 SLP167 T02720200
Docket · 3
The files NTSB released with the investigation on November 7, 2022, on NTSB’s docket system: statements, records, photos and specialists’ reports. 12.0 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.