ATL90FA073

NTSB accident investigation · MBB BO-105S · Benton, AL · March 6, 1990

Accident · No injuriesField investigationFinal report
Date
March 6, 1990, 12:00 local (18:00 UTC)
Place
Benton, AL
Injuries
4 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N105SMMBB BO-105S
Weather
Visual (VMC) · Day
Status
Completed · report September 4, 1992
Report
Approved by Office Director
FAA report
19900306003409A
Case key
8115

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 pilot-in-command's inadequate visual lookout. The incorrect wire survey given by the highway patrol personnel was a related factor.

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 collision with objectTakeoff - initial climb
Object - wire,staticFactor
Safety advisory - inaccurateGround personnelFactor
Visual lookout - inadequatePilot in commandCause

Analysis

The ems/medevac pilot was picking up a patient at a remote site. After the patient was loaded, the pilot made a hover turn and departed the site along the same route he landed. At 538 feet east of the takeoff site and about 40 feet above the ground, the helicopter collided with a wire which crossed above a highway. The support wire snapped and contacted the main rotor system. The helicopter was landed, straight ahead. The pilot reported seeing the wire just prior to the collision. The crew received a wire survey from highway patrol personnel prior to landing at the site. The highway patrol reported that there were no wires crossing the road.

Aircraft

Registration
N105SM
Reported as
MBB BO-105S
Category
Helicopter
Serial number
549
Airframe hours
3,653
Engine
Allison 250-C20B, 420 horsepower, turbo shaft
Damage
Substantial damage
Flight
Part 135
Operator
Omniflight Helicopters
Registered owner
Omniflight Aircraft Corp.
Airworthiness certificate
Standard, Normal
Last inspection
AAIP · March 1, 1990 · 9 hours before
Departed
Benton, AL
Destination
Montgomery, AL
Flight plan
Company VFR

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
33
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Helicopter
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Right
Toxicology
Performed
Flight hours
3,195 total · 32 in this make and model · 2,722 as pilot in command · 36 in the last 90 days · 12 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
120° at 7 knots
Visibility
7 statute miles
Lowest ceiling
None
Temperature
72 °F, dew point 48 °F
Altimeter
30.00 inHg
Observed at
MGM, 38 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.