MIA98LA051

NTSB accident investigation · Bell 47D1 · Bunnell, FL · January 3, 1998

Accident · No injuriesLimited investigationFinal report
Date
January 3, 1998, 08:40 local (13:40 UTC)
Place
Bunnell, FL
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N59326Bell 47D1
Weather
Visual (VMC) · Day
Status
Completed · report October 30, 1998
Report
Approved by Office Director
FAA report
19980103000069A
Case key
38441

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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Probable cause

the student pilot's improper planning/decision, which resulted in fuel exhaustion, loss of engine power, and a forced landing.

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) - nonmechanicalManeuvering
Planning/decision - improperPilot in commandCause
Fluid,fuel - exhaustionCause
Forced landingEmergency descent/landing
Autorotation - initiatedPilot in command
In flight collision with terrain/waterEmergency landing

Analysis

The student pilot was on a supervised solo flight in the traffic pattern, practicing landings and takeoffs. At an altitude of about 300 feet above the airport, the helicopter's engine lost power. The student autorotated to an open field, and the helicopter was damaged during a forced landing. The student said when he checked the fuel gauge during preflight, it indicated '5/8' of a tank, which was confirmed by a 'dip stick test.' When he next checked the fuel gauge after doing some pattern work, it indicated '3/8' tank. According to an FAA Inspector's statement, '...the fuel tank was drained and less than 12 ounces of fuel remained in the undamaged fuel tank...no other maintenance discrepancies were found which may have contributed to the accident.' The flight was about 1 hour and 10 minutes in duration.

Factual narrative

On January 3, 1998, about 0840 eastern standard time, a Bell 47D1 helicopter, N59326, registered to a private owner, operating as a 14 CFR Part 91, local instructional flight, crashed during a forced landing near Bunnell, Florida. Visual meteorological conditions prevailed and no flight plan was filed. The helicopter was substantially damaged. The student pilot was not injured. The flight originated about 0730.

The student pilot was on a solo flight in the traffic pattern, practicing landings and takeoffs when the engine lost power. The pilot autorotated to an open field. The pilot said when he checked "the fuel indicator [it] was on 5/8 tank (sic), which was confirmed by the dip stick test." When he next checked the fuel gauge after doing some pattern work, it indicated "3/8 tank (sic)."

According to the FAA Inspector's statement, the student pilot was on a supervised instructional flight, and at an altitude of about 300 feet above the airport the helicopter's "engine stopped." The inspector stated, "...the fuel tank was drained and less then 12 ounces of fuel remained in the undamaged fuel tank...no other maintenance discrepancies were found which may have contributed to the accident."

Aircraft

Registration
N59326
Reported as
Bell 47D1
Category
Helicopter
Serial number
45
Airframe hours
5,589
Engine
Franklin 6V4, 210 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
Wing & Rotor International
Registered owner
S&J Investment
Airworthiness certificate
Standard, Normal
Last inspection
Annual · December 17, 1997 · 23 hours before
Airport
X47 · Flagler County, runway 29, 5,000 × 110 ft, asphalt

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
36
Certificate
Student
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
39 total · 37 in this make and model · 39 in the last 90 days · 39 in the last 30 days · 10 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
40° at 8 knots
Visibility
10 statute miles
Lowest ceiling
5,500 ft broken
Temperature
70 °F, dew point 61 °F
Altimeter
30.00 inHg
Observed at
DAB

FAA reports on this event · 1

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

Other investigations on N59326 · 1

Matched to the same aircraft by N-number and date.