SEA03LA158

NTSB accident investigation · Hughes 269C · Melba, ID · July 28, 2003

Accident · No injuriesLimited investigationFinal report
Date
July 28, 2003, 12:30 local (18:30 UTC)
Place
Melba, ID
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N171FFHughes 269C
Weather
Visual (VMC) · Day
Status
Completed · report December 30, 2003
Report
Approved by Office Director
Parties
Federal Aviation Administration
FAA report
20030728036749A
Case key
57583

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's failure to maintain control of the helicopter due to his failure to maintain rotor rpm. Factors contributing to the accident were the corn crop, and the pilot's abrupt maneuver to avoid obstacles.

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.

Abrupt maneuverManeuvering
Maneuver to avoid obstructions - misjudgedPilot in command
Loss of control - in flightManeuvering
Aircraft control - not maintainedPilot in commandCause
Rotor rpm - not maintainedPilot in commandFactor
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - cropFactor

Analysis

As the pilot was approaching the north end of the field from the south, about 2 feet above the corn stalks at 30 knots, he began a climbing right pedal turn. Approximately 30 to 40 degrees through the turn, the pilot misjudged his distance from wires that bordered the field. The pilot stopped the pedal turn and applied right forward cyclic. As the helicopter began to sink the pilot applied forward cyclic and additional throttle to gain airspeed and to minimize the descent. The pilot then applied aft cyclic and collective to stop the descent, but the helicopter's right skid impacted the corn causing it to veer right before impacting the ground and coming to rest on its left side.

Factual narrative

On July 28, 2003, approximately 1230 mountain daylight time, a Hughes 269C helicopter, N171FF, was substantially damaged after impacting terrain while maneuvering to reverse direction near Melba, Idaho. The commercial pilot, sole occupant of the helicopter, was not injured. The aircraft was registered to and operated by Silverhawk Aviation Inc., of Caldwell, Idaho. Visual meteorological conditions prevailed for the 14 CFR Part 91 flight, and a flight plan was not filed. The flight originated from the Caldwell Industrial Airport, Caldwell, Idaho, at 0930.

According to interviews with the NTSB investigator-in-charge, an FAA inspector, and as reported on the Pilot/Operator Aircraft Accident Report (NTSB for 6120.1/2), on July 25, 2003, the pilot was given two flights to demonstrate and evaluate him on helicopter pollination operations. On the day of the accident the pilot was signed off and dispatched to fly 172 acres of corn fields for pollination. The pilot stated that on the final field of the day he was flying from south to north, 2 feet above the corn stalks at 30 knots, when he misjudged his distance to the wires bordering the north side of the field. As he approached the north end of the field he began a climb and a right pedal turn while looking for the wires. The pilot reported that approximately 30 to 40 degrees into the turn he saw the wires at eye level, stopped the pedal turn and applied right forward cyclic. The pilot stated he felt a slight "cyclic shutter" as the aircraft began to sink. He then applied forward cyclic and additional throttle to gain speed and minimize the descent rate. As the aircraft approached the ground the pilot applied aft cyclic to bring the nose up and "pumped the collective" to stop the descent. The aircraft's right skid impacted the corn, causing the nose of the aircraft to veer right as the aircraft pitched forward hitting the ground and coming to rest on its left side. The pilot reported that he then turned off the master switch, shut off the fuel, and egressed the helicopter uninjured. There was no post-impact fire.

An FAA inspector, who traveled to the accident site, reported that the tail boom had been cut through and was substantially damaged. He also reported that all main rotor blades were bent, the right skid was broken, and the tail rotor drive shaft had separated from the aircraft.

Aircraft

Registration
N171FF
Reported as
Hughes 269C
Category
Helicopter
Serial number
S1200
Airframe hours
6,754
Engine
Lycoming IO-360, 190 horsepower, reciprocating
Damage
Substantial damage
Flight
Other work use · Part 91
Operator
Silverhawk Aviation Inc
Registered owner
Silverhawk Aviation Inc
Airworthiness certificate
Standard, Normal
Last inspection
Annual · November 22, 2002 · 12.5 hours before
Departed
EUL · Caldwell, ID
Destination
Melba, ID

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
31
Injuries
None
Certificates
Flight instructor, Commercial
Medical
Class 2, With waivers/limitations
Last flight review
July 25, 2003
Seat
Left
Flight hours
297 total · 58 in this make and model · 180 as pilot in command · 29 in the last 90 days · 10 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
260° at 6 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
88 °F, dew point 55 °F
Altimeter
30.12 inHg
Observed at
EUL, 25 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.