NTSB CAROL · Event
Event LAX96IA300
Registry · N420EA
FAA Aircraft Registry record.
Make / Model
HONDA AIRCRAFT CO LLC HA-420
Year of manufacture
2016
TCDS
A00018AT · HONDA AIRCRAFT COMPANY LLC
Engine
GE HONDA HF-120
Seats / Engines
8 seats · 2 engines
Last airworthiness date
20160527
ADS-B equipped
Yes — Mode-S A4FC04
Registrant of record
HONDA AVIATION SERVICE CO INC
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
Improper installation of a flexible hydraulic hose by company maintenance personnel and inadequate inspection of the work by company inspectors which resulted in the loose hose becoming entangled in the nose gear linkage, preventing complete extension of the nose gear.
Factual narrative
On August 8, 1996, at 0757 hours Hawaiian standard time, a Douglas DC-9-51, N420EA, was brought to a stop on runway 8R after the nose landing gear collapsed during landing at Honolulu International Airport, Honolulu, Hawaii. The aircraft, which received minor damage, was operated by Hawaiian Airlines, Inc., under 14 CFR Part 121, as flight 113. There were no injuries among the 71 passengers, 3 cabin crew, and 2 cockpit crew aboard. The flight was on an instrument flight plan and departed Honolulu in visual meteorological conditions about 0700 destined for Lihue, Hawaii. It returned to Honolulu without landing at Lihue when the unsafe nose gear indication was observed during the approach there. Personnel from the FAA's Honolulu Flight Standards District Office reported that the flight crew observed alignment marks on the nose gear linkage through an inspection window in the cockpit which confirmed that the nose gear was not locked down. En route back to Honolulu, the captain declared an emergency, ordered emergency equipment, and instructed the cabin crew to prepare the cabin. The cabin crew reported that there was ample time to prepare the cabin and that the landing was uneventful until the aircraft was relatively slow and the nose gear gently collapsed. The aircraft came to a stop on the runway on its nose. There was some smoke and burning odor in the cabin and the cockpit crew ordered an evacuation of the cabin. About 25 passengers exited via the aft slide before crash and rescue personnel arrived and determined that it would be safe to deplane the remaining passengers through the forward doors using stepladders. Four people went to the hospital for observation; two were the front cabin flight attendants and two others were non-revenue flight attendants aboard the flight. Investigation revealed that a flexible hydraulic hose was not secured in the nosewheel well. The flexible hose had been temporarily installed in the nosewheel steering system to replace a previously broken fixed line. The hose become trapped in the nose gear over center, down lock mechanism (Douglas part numbers 3913968-13 and 5920210-3) during the gear extension. The incident occurred on the first flight cycle following the maintenance alteration of the hose installation. The nose landing gear did not fully extend as the flight approached its destination. After confirming the unsafe gear position through an inspection window, the crew completed emergency checklist procedures and readied the passenger cabin for an emergency landing while returning to the departure airport. In the ensuing emergency landing the nose gear collapsed and the aircraft came to a stop on the runway on its nose. A partial cabin evacuation was completed via the tailcone slide before it was determined safe to exit the remaining passengers and crew through the forward cabin doors. Inspection revealed that an improperly secured flexible hydraulic hose had engaged the nose wheel downlock mechanism preventing it from locking over center. The flexible hose was installed temporarily to replace a leaking rigid line. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1996_LAX96IA300.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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Related research
What the literature says.
Academic papers and agency reports matching this event's aircraft type or causal vocabulary (stall, maintenance). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
- Embry-Riddle Scholarly Commons 2023 · Conference paper
The Value of Strong Partnerships to Build a Successful Aviation Maintenance Career Pathway Program for Transitioning Military Service Members
The aerospace industry is competing with other industries for a qualified workforce, and many of those competing industries are investing heavily in creating workforce development pipelines.
- Embry-Riddle Scholarly Commons 2026 · Journal article (IJAAA)
From Reactive to Predictive: A hybrid Trust-Mediated Adoption Framework for Data-Driven Maintenance in Distributed-Authority Aviation Environments
Modern aviation maintenance operates within increasingly data-intensive technological environments, yet the operational integration of predictive maintenance into routine decision-making remains incon…
- NASA NTRS 2026 · Conference Paper
Computational Analysis of Steady State Aerodynamics of Transonic Truss-Braced Wing Configuration in Deep Stall
This study presents a computational investigation of steady state aerodynamics of the Subsonic Ultra-Green Aircraft Research (SUGAR) Transonic Truss-Braced Wing (TTBW) configuration over a wide range …
- Semantic Scholar 2025 · Article (Applied Sciences)
Decision-Making Framework for Aviation Safety in Predictive Maintenance Strategies
The implementation of predictive maintenance (PM) in aviation presents unique challenges due to strict safety requirements, complex operational environments, and regulatory constraints.
- Embry-Riddle Scholarly Commons 2024 · Journal article (JAAER)
Low-Resource Automatic Speech Recognition Domain Adaptation – A Case-Study in Aviation Maintenance
With timeliness and efficiency being critical in the aviation maintenance industry, the need has been growing for smart technological solutions that optimize and streamline the different underlying ta…
- Embry-Riddle Scholarly Commons 2024 · Journal article (JAAER)
A New Trajectory in UAV Safety: Leveraging Reinforcement Learning for Distance Maintenance Under Wind Variations
In the field of aviation, safety is a critical cornerstone, and the operation of Unmanned Aerial Vehicle (UAV) systems is deeply connected with this principle.
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