LAX89LA073

NTSB accident investigation · Bell 206L-1 · Oakland, CA · December 21, 1988

Accident · FatalLimited investigationFinal report
Date
December 20, 1988, 18:00 local (Dec 21, 1988, 02:00 UTC)
Place
Oakland, CA
Injuries
1 fatal
Damage
Destroyed
Phase of flight
Enroute
Aircraft
N1072SBell 206L-1
Weather
Instrument (IMC) · Night/dark
Status
Completed · report July 9, 1990
Report
Approved by Office Director
FAA report
19881220065189A
Case key
26316

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

Pilots intentional flight into known adverse weather condititions from which he inadvertently descended into the water at a high rate of speed. Contributing to the accident was the pilot's failure to obtain a weather briefing; lack of recent instrument flying experience; overconfident in his own ability to conduct a safe flight in adverse weather conditions.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

In flight encounter with weatherCruise - normal
Weather condition - fogFactor
Weather condition - high windFactor
Weather condition - rainFactor
Fss service - not usedPilot in commandFactor
Flight into known adverse weather - intentionalPilot in commandCause
Lack of recent instrument timePilot in commandFactor
Preflight planning/preparation - poorPilot in commandCause
Weather evaluation - improperPilot in commandFactor
Altitude - not maintainedPilot in commandCause
In flight collision with terrain/waterDescent

Analysis

The pilot descended into the san francisco bay area while on a night visual flight from Oakland to san francisco. The weather was instrument meteorological conditions with visibility between one to four miles with moderate rain showers and fog. Prior to the accident the pilot attempted to radio san francisco tower but was advised he was still broadcasting on the Oakland tower frequency. The pilot acknowledged the advice and was not heard from again. The aircraft was recovered from the bay after exposure to salt water. Examination of the aircraft wreckage revealed no evidence of a mechanical malfunction prior to the accident. The plt was not found. The investigation revealed that the pilot had little recent instrument experience.

Aircraft

Registration
N1072S
Reported as
Bell 206L-1
Category
Helicopter
Serial number
45326
Airframe hours
3,244
Engine
Allison C28B, 500 horsepower, turbo shaft
Damage
Destroyed
Flight
Business · Part 91
Registered owner
Helicopters Unlimited
Airworthiness certificate
Standard, Normal
Departed
OAK
Destination
Hunter'S Point, CA
Flight plan
VFR

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
42
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Helicopter
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Right
Flight hours
2,370 total

Weather

Conditions
Instrument (IMC) · Night/dark
Wind
220° at 20 knots
Visibility
1 statute miles
Lowest ceiling
1,600 ft overcast
Temperature
48 °F, dew point 48 °F
Altimeter
29.00 inHg
Observed at
OAK

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.