LAX83FA462

NTSB accident investigation · Bell 47G-4G · Lodi, CA · September 28, 1983

Accident · No injuriesField investigationFinal report
Date
September 27, 1983, 17:20 local (Sep 28, 1983, 00:20 UTC)
Place
Lodi, CA
Injuries
1 uninjured
Damage
Destroyed
Phase of flight
Initial climb
Aircraft
N7956SBell 47G-4G
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19830927055499A
Case key
23519

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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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.

Loss of engine power(total) - nonmechanicalTakeoff - initial climb
Fluid,fuel - waterCause
Aircraft preflight - inadequatePilot in commandCause
Forced landingLanding
Autorotation - performedPilot in command
Roll overLanding
Terrain condition - rough/unevenFactor
Terrain condition - downhillFactor

Analysis

During takeoff, the helicopter lost power after climbing aprx 20 ft. the plt made an autorotative landing, but after touchdown, the helicopter slid down a river bank, rolled over & began burning. The fuel tanks did not rupture & still contained fuel. When fuel was drained from each tank, each sample contained water & considerable water was found in the left tank.

Aircraft

Registration
N7956S
Reported as
Bell 47G-4G
Category
Helicopter
Serial number
7551
Airframe hours
8,649
Engine
Lycoming VO-540-B1B3, 280 horsepower, reciprocating
Damage
Destroyed
Fire
On-Ground
Flight
Personal · Part 91
Registered owner
Lodi Vintage Air, Inc.
Airworthiness certificate
Special, Restricted (Special)
Last inspection
100 hour · July 26, 1983 · 28 hours before

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
28
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
515 total · 325 in this make and model · 449 as pilot in command · 26 in the last 90 days

Weather

Conditions
Visual (VMC) · Day
Wind
300° at 7 knots
Visibility
20 statute miles
Lowest ceiling
None
Temperature
79 °F, dew point 55 °F
Altimeter
29.00 inHg
Observed at
SCK, 17 nm away

FAA reports on this event · 1

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