LAX98TA123

NTSB accident investigation · Bell 206B · Santa Clarita, CA · March 20, 1998

Accident · No injuriesFinal report
Date
March 19, 1998, 17:40 local (Mar 20, 1998, 01:40 UTC)
Place
Santa Clarita, CA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N3186LBell 206B
Weather
Visual (VMC) · Dusk
Status
Completed · report February 15, 2001
Report
Approved by Office Director
FAA report
19980320003959A
Case key
30147

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 failure of the pilot to maintain adequate clearance with the wires. Additional factors in this accident are the position of the sun at that time of the day, which made it difficult to see the wires, and the lack of markings or poles for that series of wires.

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 objectApproach - vfr pattern - final approach
Object - wire,staticFactor
Clearance - not maintainedPilot in commandCause
Visual/aural detectionPilot in commandFactor
Light condition - sunglareFactor
In flight collision with terrain/waterDescent - uncontrolled

Analysis

The pilot reported that he was making a normal approach to a dry riverbed on a southwesterly heading directly into the sun. He reported that 'moments before I hit the wires, I saw them and made an evasive maneuver to avoid them.' He then clipped the wire with the main rotor blades and as he attempted to turn away, he clipped the tail rotor. The pilot stated that he then flew the helicopter to the ground and made ground contact in a level attitude. The helicopter landed hard and rolled over onto its right side. The series of wires were at a measured height of 39 feet agl and spanned lengthwise approximately 1,200 feet between poles or other markings. The sun and moon position information for the time of the accident showed the sun's position to be at 4.6 degrees above the horizon. The sun's azimuth was at 252 degrees. Official sunset that evening was at 1808.

Factual narrative

On March 19, 1998, at 1740 hours Pacific standard time, a Bell 206B, N3186L, collided with a power line and crashed in a dry riverbed during an approach for landing in a field near Santa Clarita, California. The helicopter sustained substantial damage and the commercial pilot, the sole occupant, was not injured. Visual meteorological conditions prevailed for the flight and no flight plan was filed. The helicopter was operated by the Los Angeles City Fire Department as a public-use aircraft. The flight originated at the Van Nuys, California, airport at 1645.

In a written statement, the pilot reported that he was making a normal approach to the riverbed on a southwesterly heading directly into the sun. He reported that "moments before I hit the wires, I saw them and made an evasive maneuver to avoid them." He then clipped the wire with the main rotor blades and as he attempted to turn away, he clipped the tail rotor. The pilot stated that he then flew the helicopter to the ground and made ground contact in a level attitude. The helicopter landed hard and rolled over onto its right side.

The series of wires were at a measured height of 39 feet agl and spanned lengthwise approximately 1,200 feet between poles or other markings.

The sun and moon position information for the time of the accident showed the sun's position to be at 4.6 degrees above the horizon. The sun's azimuth was 252 degrees. Official sunset that evening was at 1808.

Aircraft

Registration
N3186L
Reported as
Bell 206B
Category
Helicopter
Serial number
3798
Airframe hours
5,171
Engine
Allison 250-C20 J, 420 horsepower, turbo shaft
Damage
Substantial damage
Flight
Public aircraft · Part 91
Registered owner
Los Angeles City Fire Dept.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · March 13, 1998 · 6 hours before
Departed
VNY · Van Nuys, CA
Destination
Newhall, CA

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
45
Certificates
Commercial, Flight instructor
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Right
Flight hours
2,000 total · 1,200 in this make and model · 1,800 as pilot in command · 42 in the last 90 days · 8 in the last 30 days

Weather

Conditions
Visual (VMC) · Dusk
Wind
160° at 7 knots
Visibility
10 statute miles
Lowest ceiling
2,000 ft broken
Temperature
70 °F
Altimeter
29.00 inHg
Observed at
VNY, 15 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.