DFW05CA220

NTSB accident investigation · Robinson R-44 · Odessa, TX · August 23, 2005

Accident · No injuriesData collectionFinal report
Date
August 23, 2005, 14:40 local (19:40 UTC)
Place
Odessa, TX
Injuries
3 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N160TXRobinson R-44
Weather
Visual (VMC) · Day
Status
Completed · report January 31, 2006
Report
Approved by Office Director
Parties
Federal Aviation Administration
FAA report
20050823018209A
Case key
62316

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

The pilot's failure to maintain main rotor RPM and the improper landing flare which resulted in a hard landing.

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.

Hard landingLanding - flare/touchdown
Emergency procedure - simulatedPilot in command
Rotor rpm - not maintainedPilot in commandCause
Flare - improperPilot in commandCause
Misc rotorcraft,tail boom - separation

Analysis

The 1,212-hour commercial pilot departed runway 11 and remained in the landing pattern to demonstrate a simulated emergency landing for his passengers. While on the left downwind the pilot applied carburetor heat and radioed his intentions. Approximately 200 feet above ground level (agl), he lined up for a final approach to runway 11 and checked his instruments. All indications were "normal" so the pilot proceeded to "[roll] off" the engine power. With the "rotor RPM [bleeding] off very rapidly", the pilot elected to leave the collective in the full down position until he applied full engine throttle to start the flare. Shortly thereafter the pilot realized that the helicopter was going to impact the ground "hard." The helicopter impacted the runway with enough force that the main rotor blades contacted the tail boom resulting in its separation from the fuselage. The helicopter continued to slide down the runway for approximately 25 to 30 feet before rolling and coming to rest on its right side. An examination of the helicopter revealed the fuselage, main and tail rotor blades, and the tail rotor drive shaft sustained structural damage. The pilot reported that there was no mechanical malfunction or failure with the helicopter.

Factual narrative

On August 23, 2005, about 1440 central daylight time, a single-engine Robinson R-44 helicopter, N160TX, was substantially damaged during a hard landing while conducting a simulated emergency landing at the Odessa-Schlemeyer Field Airport (ODO), near Odessa, Texas. The commercial pilot and his two passengers were not injured. The helicopter was registered to and operated by a private corporation. Visual meteorological conditions prevailed and a flight plan was not filed for the 14 Code of Federal Regulations Part 91 personal flight. The local flight originated from the accident airport at 1400.

According to the 1,212-hour pilot, the flight departed runway 11 and remained in the landing pattern to demonstrate an autorotation for his passengers. While established on the left downwind he applied carburetor heat and radioed his intentions. Approximately 200 feet above ground level (agl), he lined up for a final approach to runway 11 and "made another radio call, checked carburetor temperature, checked gauges to make sure they were in the green and checked manifold pressure." All indications were "normal" so the pilot proceeded to "[roll] off" the engine power. With the "rotor RPM [bleeding] off very rapidly", the pilot elected to leave the collective in the full down position until he applied full engine throttle to start the flare. Shortly thereafter the pilot realized that the helicopter was going to impact the ground "hard."

The helicopter impacted the runway with enough force that the main rotor blades contacted the tail boom, resulting in its separation from the fuselage. The helicopter continued to slide down the runway for approximately 25 to 30 feet before rolling and coming to rest on its right side.

The pilot further reported that there was no mechanical malfunction or failure with the helicopter.

A Federal Aviation Administration (FAA) inspector who examined the helicopter, reported that the fuselage, main and tail rotor blades, and the tail rotor drive shaft sustained structural damage.

At 1353, the automated surface observing system (ASOS) at ODO, reported wind from 120 degrees at 12 knots, visibility 10 statute miles, clear skies, temperature 91 degrees Fahrenheit, dew point 57 degrees Fahrenheit and a barometric pressure setting of 29.98 inches of Mercury.

Aircraft

Registration
N160TX
Reported as
Robinson R-44
Category
Helicopter
Serial number
0997
Airframe hours
1,208
Engine
Lycoming O-540, 260 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Leak Surveys Inc
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · August 1, 2005 · 17 hours before
Departed
ODO · Odessa, TX
Destination
ODO · Odessa, TX
Airport
ODO · Odessa-Schlemeyer Field, runway 11, 3,420 × 60 ft, asphalt

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
Last flight review
July 1, 2004
Seat
Left
Flight hours
1,212 total · 691 in this make and model · 1,073 as pilot in command · 264 in the last 90 days · 85 in the last 30 days · 5 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
120° at 12 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
91 °F, dew point 57 °F
Altimeter
29.97 inHg
Observed at
ODO

FAA reports on this event · 1

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