FTW02LA227

NTSB accident investigation · Robinson R22 Beta · Cornudas, TX · August 3, 2002

Accident · Minor injuriesLimited investigationFinal report
Date
August 3, 2002, 12:30 local (18:30 UTC)
Place
Cornudas, TX
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N681MPRobinson R22 Beta
Weather
Visual (VMC) · Day
Status
Completed · report June 2, 2004
Report
Approved by Office Director
Parties
Robinson Helicopter, FAA FSDO
FAA report
20020803022439A
Case key
55385

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 rotor RPM and his improper landing flare. A contributing factor was the activation of a warning light.

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.

Airframe/component/system failure/malfunctionCruise
Precautionary landing - initiatedPilot in command
Annunciator panel light(s) - activatedFactor
Hard landingLanding - flare/touchdown
Rotor rpm - not maintainedPilot in commandCause
Flare - delayedPilot in commandCause

Analysis

The 3,053-hour pilot reported that he was ferrying the helicopter to its new owner. The pilot stated that while in cruise flight, at 1,000 feet AGL, the helicopter's clutch light flickered then went out. Approximately one minute later, the clutch light flickered again and went out. The pilot elected to land the helicopter. The pilot entered an autorotation, slowed the aircraft to 65 knots, and made a 180-degree left turn. After the helicopter stopped its turn, and as it descended to approximately 200 feet AGL, the helicopter encountered a "high sink rate." As the helicopter descended through 150 feet AGL, the pilot rolled on throttle, rejoined the needles, and increased collective pitch. The aircraft continued to descend abnormally, and the pilot stated the airspeed was 60 knots. The pilot further increased collective, and by 50 feet AGL, the helicopter began to "shudder." The pilot began to flare the aircraft, and it touched down "hard," bounced, and touched down again. The left landing skid folded out and up, and the helicopter slid approximately 30 to 40 feet before coming to rest on its right side. Examination of the clutch assembly, actuator assembly, and Vee belts revealed no anomalies that would have precluded normal operation.

Factual narrative

On August 3, 2002, approximately 1230 mountain daylight time, a Robinson R22 Beta helicopter, N681MP was substantially damaged during a hard landing near Cornudas, Texas. The helicopter was registered to and operated by Prestige Helicopters, Inc., of Chambler, Georgia. The commercial pilot, sole occupant of the helicopter, sustained minor injuries. Visual meteorological conditions prevailed, and no flight plan was filed for the 14 Code of Federal Regulations Part 91 positioning flight. The 212 nautical mile cross-country flight originated from El Paso International Airport (ELP), near El Paso, Texas, at 1200, and was destined for Midland International Airport (MAF), near Midland, Texas.

The 3,053-hour pilot reported to the NTSB investigator-in-charge that he was ferrying the helicopter to its new owner located in Louisville, Kentucky. The pilot stated that while in cruise flight, at 1,000 feet AGL, the helicopter's clutch light flickered then went out. Approximately one minute later, the clutch light flickered again and went out. The pilot elected to land the helicopter. The pilot entered an autorotation, slowed the aircraft to 65 knots, and made a 180-degree left turn. After the helicopter stopped its turn, and as it descended to approximately 200 feet AGL, the helicopter encountered a "high sink rate." As the helicopter descended through 150 feet AGL, the pilot rolled on throttle, rejoined the needles, and increased collective pitch. The aircraft continued to descend abnormally, and the pilot stated the airspeed was 60 knots. The pilot further increased collective, and by 50 feet AGL, the helicopter began to "shudder." The pilot began to flare the aircraft, and it touched down "hard," bounced, and touched down again. The left landing skid folded out and up, and the helicopter slid approximately 30 to 40 feet before coming to rest on its right side. The pilot stated that he released his seatbelt and "crawled" out of the aircraft.

Examination of the aircraft by a FAA inspector, who responded to the accident site, revealed that the tail boom separated approximately 18 to 24 inches forward of the vertical fin.

Detailed examination of the clutch assembly, actuator assembly, and Vee belts was accomplished under the supervision of the FAA at the Robinson Helicopter Facility, Torrance, California, on September 10, 2002. They were functionally tested and operated properly, revealing no anomalies that would have precluded normal operation.

Aircraft

Registration
N681MP
Reported as
Robinson R22 Beta
Category
Helicopter
Serial number
3345
Airframe hours
28
Engine
Lycoming O-360-J2A, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Positioning · Part 91
Registered owner
Prestige Helicopters, Inc
Airworthiness certificate
Standard, Normal
Departed
ELP · El Paso, TX
Destination
MAF · Midland, TX

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
42
Injuries
Minor
Certificates
Flight instructor, Commercial
Medical
Class 2, Valid Medical--no waivers/lim.
Last flight review
January 30, 2001
Seat
Right
Flight hours
3,053 total · 872 in this make and model · 2,990 as pilot in command · 219 in the last 90 days · 75 in the last 30 days · 6 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
270° at 6 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
75 °F

Docket · 3

The files NTSB released with the investigation on March 25, 2004, on NTSB’s docket system: statements, records, photos and specialists’ reports. 336 KB in all.

FAA reports on this event · 1

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