FTW97LA016

NTSB accident investigation · Bell 206L-3 · Venice, LA · October 14, 1996

Accident · No injuriesLimited investigationFinal report
Date
October 14, 1996, 07:20 local (12:20 UTC)
Place
Venice, LA
Injuries
4 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N21497Bell 206L-3
Weather
Visual (VMC) · Dawn
Status
Completed · report May 23, 1997
Report
Approved by Office Director
FAA report
19961014031959A
Case key
20091

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

a loss of engine power due to frogs being ingested into the engine as a result of the pilots failure to perform a thorough preflight, and the pilot's improper touchdown technique.

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(partial) - nonmechanicalTakeoff - initial climb
Turboshaft engine - foreign object damageCause
Aircraft preflight - inadequatePilot in commandCause
Misc,engine compressor stall/surge
Hard landingLanding - flare/touchdown
Touchdown - improperPilot in commandCause
Misc rotorcraft,main rotor/tail boom contact - blade strike

Analysis

During takeoff, approximately 50 feet AGL, the pilot heard a 'big pop and the helicopter was shaky and noisy.' He initiated a deceleration due to the wires in front of the helicopter. During the landing, 'a main rotor blade flexed down and severed the tailboom.' Throughout the forced landing the pilot had tail rotor pedal control. An examination of the engine by the operator revealed that frogs had been ingested.

Factual narrative

On October 14, 1996, at 0720 central daylight time, a Bell 206L-3 helicopter, N21497, owned and operated by Petroleum Helicopters, Inc., was substantially damaged during a precautionary landing near Venice, Louisiana. Visual meteorological conditions prevailed for the Title 14 CFR Part 135 air taxi flight. The commercial pilot and three passengers were not injured. A company flight plan was filed. The flight was originating from the Shell Heliport at the time of the accident.

According to the pilot, the helicopter was approximately 50 feet AGL during takeoff when he heard a "big pop and the helicopter was shaky and noisy." He initiated a "deceleration to land "due to the wires in front of the helicopter. During the landing, a 2-foot section of the tailboom which included the vertical fin and tail rotor gearbox, separated from the tailboom. Throughout the forced landing he had tail rotor pedal control.

The passengers reported that on takeoff they heard a noise like a "backfire," and then the helicopter began to shake.

According to the operator, the damage to the helicopter resulted when "a main rotor blade flexed down and severed the tailboom." An examination of the engine by the operator revealed that frogs had been ingested.

Aircraft

Registration
N21497
Reported as
Bell 206L-3
Category
Helicopter
Serial number
51518
Airframe hours
5,862
Engine
Allison 250-C30P, 650 horsepower, turbo shaft
Damage
Substantial damage
Flight
Part 135
Operator
Petroleum Helicopters, Inc
Registered owner
Banc One Texas Leasing Co
Airworthiness certificate
Standard, Normal
Last inspection
AAIP · October 11, 1996 · 9 hours before
Departed
NONE
Destination
South Pass 65c, GM
Airport
NONE · Shell Heliport

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
49
Certificate
Commercial
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Right
Flight hours
13,967 total · 10,807 in this make and model · 198 in the last 90 days · 63 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Dawn
Visibility
7 statute miles
Lowest ceiling
None
Temperature
72 °F, dew point 66 °F
Altimeter
30.00 inHg

FAA reports on this event · 1

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