DEN03LA078

NTSB accident investigation · Bell 206-L4 · Aurora, CO · May 8, 2003

Accident · Minor injuriesLimited investigationFinal report
Date
May 8, 2003, 17:15 local (23:15 UTC)
Place
Aurora, CO
Injuries
1 minor, 2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N70TVBell 206-L4
Weather
Visual (VMC) · Day
Status
Completed · report December 30, 2003
Report
Approved by Office Director
Parties
FAA Flight Standards District Office
FAA report
20030508009409A
Case key
56957

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

inadequate infligt planning/decision by the flight crew and the check pilot's failure to initiate remedial action in a timely manner. Contributing factors were the pilot-in-command's inadequate supervision of the check pilot, the check pilot's lack of recency of high altitude experience, and the high density altitude.

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 terrain/waterLanding - flare/touchdown
In-flight planning/decision - inadequateFlightcrewCause
Emergency procedure - simulatedPilot in command
Autorotation - performedCheck pilot
Remedial action - delayedCheck pilotCause
Supervision - inadequatePilot in commandFactor
Lack of recent experience in type operationCheck pilotFactor
Weather condition - high density altitudeFactor

Analysis

According to the pilot-in-command (PIC), the helicopter was returning to Centennial Airport, Englewood, after the crew had filmed a news story. He was allowing the check pilot (CP) to fly the helicopter. The PIC "bumped the throttle" to simulate a power loss. The CP turned into the wind and slowed to 60 knots. The PIC consulted the CP and confirmed the landing location and recovery procedures (i.e., rotor rpm in the green arc, full throttle at 200 feet agl). The CP flared the helicopter 75 feet above the ground but didn't apply power until they were 20 feet above the ground. Rotor speed decayed, and the helicopter struck the ground, bounced, spun 180 degrees, and rolled over on its left side. According to the CP, the PIC initiated a forced landing. He wrote, "I entered the [autorotation] and turned into the wind. During the power recovery, the engine did not respond in a timely manner and ground contact was the result." According to the FAA inspector who interviewed the crew, the CP did not have recent helicopter experience involving operations above 5,000 feet. Due to a lack of prior planning between the two pilots, "the [CP] assumed that the PIC was going to reapply the throttle for a power recovery. At the same time, the [PIC] assumed that the [CP] was going to apply power [to recover]. The result of this lack of CRM (cockpit resource management) was that the power was applied at a point where the descent rate could not be arrested..." At the time of the accident, the helicopter was carrying 400 pounds of fuel, television cameras and other equipment, and a cameraman. The density altitude was computed to be 7,143 feet msl.

Factual narrative

On May 8, 2003, approximately 1715 mountain daylight time, a Bell 206-L4, N70TV, registered to and operated by Helicopters, Inc., of Cahokia, Illinois, and doing business as KMGH-TV, Denver Colorado, was substantially damaged when it collided with terrain during a simulated engine failure in Aurora, Colorado. The airline transport pilot certificated check airman received minor injuries, and the commercial certificated pilot-in-command and a mechanic-passenger were not injured. Visual meteorological conditions prevailed, and no flight plan had been filed for the business flight being conducted under Title 14 CFR Part 91. The flight originated at Englewood, Colorado, approximately 1645.

According to the accident report submitted by the pilot-in-command (PIC), the helicopter was returning to Centennial Airport, Englewood, after the crew had filmed a news story. The PIC was allowing the check pilot (CP) to fly the helicopter. The PIC said he "bumped the throttle" to simulate a power loss. The CP turned into the wind and slowed to 60 knots. The PIC consulted the CP and confirmed the landing location and recovery procedures (i.e., rotor rpm in the green arc, full throttle at 200 feet agl). The CP flared the helicopter 75 feet above the ground but didn't apply power until they were 20 feet above the ground. Rotor speed decayed, and the helicopter struck the ground, bounced, spun 180 degrees, and rolled over on its left side. The main rotor blades severed the tail boom.

According to the accident report submitted by the CP, the PIC initiated a forced landing. He wrote, "I entered the [autorotation] and turned into the wind. During the power recovery, the engine did not respond in a timely manner and ground contact was the result."

An FAA inspector went to the scene and interviewed the crew. According to the inspector's report, the CP did not have recent helicopter experience involving operations above 5,000 feet. Due to a lack of prior planning between the two pilots, "the [CP] assumed that the PIC was going to reapply the throttle for a power recovery. At the same time, the [PIC] assumed that the [CP] was going to apply power [to recover]. The result of this lack of CRM (cockpit resource management) was that the power was applied at a point where the descent rate could not be arrested..."

At the time of the accident, the helicopter was carrying 400 pounds of fuel, television cameras and other equipment, and a cameraman. The density altitude was computed to be 7,202 feet msl.

Aircraft

Registration
N70TV
Reported as
Bell 206-L4
Category
Helicopter
Serial number
52020
Airframe hours
5,597
Engine
Allison 250-C30P, 650 horsepower, turbo shaft
Damage
Substantial damage
Flight
Business · Part 91
Registered owner
Helicopters, Inc.
Airworthiness certificate
Standard, Normal
Last inspection
AAIP · May 2, 2003 · 16 hours before
Departed
APA · Englewood, CO
Destination
APA

Flight crew · 2

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
42
Injuries
None
Certificates
Commercial, Flight instructor
Airplane ratings
Single-engine land
Instrument ratings
Helicopter
Medical
Class 2, Valid Medical--no waivers/lim.
Last flight review
August 25, 2002
Seat
Right
Flight hours
12,000 total · 5,000 in this make and model · 11,000 as pilot in command
Role
Check pilot
Age
55
Injuries
Minor
Certificates
Commercial, Airline transport, Flight instructor
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Helicopter, Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Last flight review
June 12, 2002
Seat
Left
Flight hours
14,085 total · 7,378 in this make and model · 14,085 as pilot in command · 134 in the last 90 days · 29 in the last 30 days · 5 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
100° at 9 knots
Visibility
15 statute miles
Lowest ceiling
10,000 ft broken
Temperature
57 °F, dew point 27 °F
Altimeter
29.62 inHg
Observed at
BKF, 12 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.