FTW02LA089

NTSB accident investigation · Bell 206L-3 · Tulsa, OK · March 4, 2002

Accident · No injuriesLimited investigationFinal report
Date
March 4, 2002, 12:35 local (18:35 UTC)
Place
Tulsa, OK
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N227HBell 206L-3
Weather
Visual (VMC) · Day
Status
Completed · report April 1, 2003
Report
Approved by Office Director
Parties
FAA FSDO
FAA report
20020304002379A
Case key
54290

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 loss of engine power for undetermined reasons. A contributing factor was the lack of suitable terrain for the 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 powerApproach
Reason for occurrence undeterminedCause
Forced landingDescent - emergency
Autorotation - initiatedPilot in command
In flight collision with objectEmergency descent/landing
Evasive maneuver - performedPilot in command
Object - vehicle
Object - tree(s)
Terrain condition - none suitableFactor
Hard landingLanding - flare/touchdown
Rotor rpm - low
Misc rotorcraft,main rotor/tail boom contact

Analysis

The local flight was en route to the company helipad for fuel when the engine lost power approximately 300 yards short of the helipad. During an autorotation to a road, the pilot had to execute an evasive maneuver to avoid a vehicle. Subsequently, at 10 feet agl, the main rotor blades struck 1.5 inch-diameter tree branches. The main rotor RPM decreased, the helicopter landed hard on the road, and the main rotor blades contacted and severed the tail boom. The pilot estimated 300 pounds of fuel was on board at the time of the accident. During the inspection of the helicopter, the engine was started and test run to idle speed, and no anomalies were noted. The fuel nozzle and fuel filters were inspected, and no anomalies were noted. The reason for the loss of engine power was not determined.

Factual narrative

On March 4, 2002, at 1235 central standard time, a Bell 206L-3 single-engine helicopter, N227H, was substantially damaged during a forced landing to a road following a total loss of engine power while on approach to a company helipad near Tulsa, Oklahoma. The commercial pilot and his passenger were not injured. The helicopter was owned and operated by Tulsa Security Patrol Inc., d.b.a. Action Helicopter Services of Tulsa. Visual meteorological conditions prevailed, and a flight plan was not filed for the 14 Code of Federal Regulations Part 91 positioning flight. The flight originated from Tulsa's Richard Lloyd Jones Jr. Airport, approximately 1230, and was en route to the company helipad.

The pilot reported that the flight was en route to the helipad for fuel when the engine lost power approximately 300 yards short of the helipad. During an autorotation to a road, the pilot had to execute an evasive maneuver to avoid a vehicle. Subsequently, at 10 feet agl, the main rotor blades struck 1.5 inch-diameter tree branches. The main rotor RPM decreased, the helicopter landed hard on the road, and the main rotor blades contacted and severed the tail boom. The pilot estimated 300 pounds of fuel was on board at the time of the accident.

On March 14, 2002, at a facility in Tulsa, an FAA inspector, the operator's director of maintenance, and the pilot examined the helicopter. Prior to the FAA inspector's arrival, the main rotor blades and main rotor mast had been removed. During the inspection, the engine was started and test run to idle speed, and no anomalies were noted. The fuel nozzle and fuel filters were inspected, and no anomalies were noted. The reason for the loss of engine power was not determined.

Aircraft

Registration
N227H
Reported as
Bell 206L-3
Category
Helicopter
Serial number
51317
Airframe hours
3,059.1
Engine
Allison 250C-30, 600 horsepower, turbo shaft
Damage
Substantial damage
Flight
Positioning · Part 91
Operator
Action Helicopter Service, doing business as Action Helicopter Services
Registered owner
Tulsa Security Patrol Inc.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · January 23, 2002 · 3.8 hours before
Departed
RVS · Tulsa, OK
Destination
OK76 · Tulsa, OK

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
53
Injuries
None
Certificates
Flight instructor, Commercial
Airplane ratings
Single-engine land
Instrument ratings
Helicopter
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Front
Flight hours
21,000 total · 5,000 in this make and model · 20,600 as pilot in command · 100 in the last 90 days · 32 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
110° at 10 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
50 °F, dew point 18 °F

Docket · 2

The files NTSB released with the investigation on December 3, 2002, on NTSB’s docket system: statements, records, photos and specialists’ reports. 537 KB in all.

FAA reports on this event · 1

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