Rockwell 114 N4888W

Summary

On 21 June 2022 at about 18:30 local time, a Rockwell 114 registered N4888W was involved in an accident near Kailua-Kona, Hawaii, United States. One person was on board and nobody was injured. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

21 June 2022 at 18:30

Classification

Accident

Location

Kailua-Kona, Hawaii, United States

Nearest airport

Ellison Onizuka Kona Intl At K (KOA)

Coordinates

19.7357, -156.0427

Aircraft

Rockwell 114

Registration

N4888W

Category

Airplane

Year built

1977

Engines

1

Operator

Not recorded

Operating rule

Part 91: General Aviation

Purpose of flight

Personal

Phase of flight

Not recorded

Route

Waimea → Unknown

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

ANC22LA046

Nobody was injured.

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.

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

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.

Quoted verbatim from the NTSB record.