Skip to content

Atlas / NTSB / LAX94LA066

NTSB CAROL · Event

Event LAX94LA066

1993-11-20 GREENFIELD, California, United States None 1 aircraft Status: Completed

Registry · N7090L

FAA Aircraft Registry record.

Make / Model

YAKOVLEV YAK-55M

Year of manufacture

1993 · 0 years old at event

Engine

VEDENEYEV M14P (350 hp)

Seats / Engines

1 seats · 1 engine

Last airworthiness date

20150701

ADS-B equipped

Yes — Mode-S A97860

Registrant of record

MEDORE DOUGLAS A

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

UNDETERMINED.

Factual narrative

On November 20, 1993, at 1300 hours Pacific standard time, an experimental Yakovlev Yak-55M, N7090L, collided with the terrain while attempting a forced landing at Metz airport, Greenfield, California. The pilot was conducting a local visual flight rules aerobatic flight. The airplane, registered to John W. Heinrich, Concord, California, and operated by the pilot, sustained substantial damage. The certificated private pilot, the sole occupant, was not injured. Visual meteorological conditions prevailed. The flight originated at Metz airport at an undetermined time. The pilot contacted the Federal Aviation Administration on November 24, 1993. At that time, he reported that he was performing aerobatic maneuvers when he experienced engine problems. The pilot executed a forced landing to Metz airport, but the airplane's altitude was insufficient to make the runway. The pilot removed the airplane from the accident site without informing the National Transportation Safety Board. Neither the pilot nor the operator provided the Safety Board with the required Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1/2. THE PILOT REPORTED THAT WHILE EXECUTING AEROBATIC MANEUVERS THE ENGINE BEGAN TO RUN ROUGH. THE PILOT SAID THAT HE ATTEMPTED TO EXECUTE AN EMERGENCY LANDING AT THE AIRPORT, BUT THE ALTITUDE WAS INSUFFICIENT TO MAKE THE RUNWAY. THE PILOT REPORTED THIS ACCIDENT FOUR DAYS AFTER THE ACCIDENT AND HAD REMOVED THE AIRPLANE BEFORE INVESTIGATORS COULD EXAMINE IT. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1993_LAX94LA066.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.