Event LAX90LA288

1990-08-09 CONCORD, California, United States Airport · CCR None 1 aircraft Status: Completed

Registry · N76SH

FAA Aircraft Registry record.

Make / Model

VAN'S AIRCRAFT RV-6A

Year of manufacture

1995

Engine

LYCOMING IO-320 SERIES (150 hp)

Seats / Engines

2 seats · 1 engine

Last airworthiness date

19960217

ADS-B equipped

Yes — Mode-S AA40C7

Registrant of record

CONRAD EDGAR

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

N76SH Cessna 421 None

Probable cause & findings

THE PILOT'S FAILURE TO FOLLOW THE ELECTRICAL SYSTEM FAILURE CHECKLIST. CONTRIBUTING TO THIS ACCIDENT WAS THE TOTAL ELECTRICAL FAILURE FOR UNDETERMINED REASONS AND THE LANDING GEAR BEING UNLOCKED.

Factual narrative

SHORTLY AFTER DEPARTING CONCORD AIRPORT THE PILOT EXPERIENCED AN INTERMITTENT ELECTRICAL FAILURE FOLLOWED BY A TOTAL ELECTRICAL FAILURE. DURING THE INTERMITTENT PHASE THE PILOT ELECTRICALLY EXTENDED THE LANDING GEAR. DURING THE EXTENSION THE AIRPLANE SUSTAINED A TOTAL ELECTRICAL FAILURE. THE PILOT RETURNED TO CONCORD AIRPORT AND LANDED. UPON TOUCHDOWN THE MAIN LANDING GEAR COLLAPSED. AFTER THE AIRPLANE CAME TO REST THE PILOT SHUT OFF ALL ELECTRICAL SWITCHES, INCLUDING THE BATTERY/MASTER SWITCH. THE PILOT STATED THAT HE THOUGHT THE LANDING EXTENDED TO THE LOCKED POSITION BEFORE SUSTAINING THE TOTAL ELECTRICAL FAILURE AND WAS UNABLE TO CHECK THE LANDING GEAR WARNING LIGHTS TO DETERMINE THAT THE LANDING GEARS WERE DOWN AND LOCKED. THE PILOT DID NOT FOLLOW THE APPROPRIATE CHECKLIST AND USE THE HANDCRANK TO DETERMINE THAT THE LANDING GEAR WAS IN FACT EXTENDED AND LOCKED. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1990_LAX90LA288.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

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