DFW06CA062

NTSB accident investigation · Eurocopter France AS-350-B2 · Port Isabel, TX · January 26, 2006

Accident · No injuriesData collectionFinal report
Date
January 26, 2006, 10:25 local (16:25 UTC)
Place
Port Isabel, TX
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N911ESEurocopter France AS-350-B2
Weather
Visual (VMC) · Day
Status
Completed · report April 25, 2006
Report
Approved by Office Director
Parties
FAA Flight Standards District Office
FAA report
20060126001819A
Case key
63168

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 rotor RPM and his improper touchdown during a simulated hovering autorotation. A contributing factor was the flight instructor's delayed remedial action.

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(cfi)
Rotor rpm - not maintainedPilot in commandCause
Touchdown - improperPilot in commandCause
Remedial action - delayedPilot in command(cfi)Factor
Misc rotorcraft,tail boom - bent

Analysis

The 5,591-hour helicopter flight instructor reported that he was on the second day of training of a newly hired 10,000-hour commercial helicopter rated pilot. After the pilot's first landing on Runway 03 (4,999-feet long by 150-feet wide asphalt-concrete runway), the flight instructor asked the pilot to perform an Emergency Medical Service (EMS) takeoff (as described in the company's operations manual), and then enter the local traffic pattern. The flight instructor stated that the EMS takeoff procedure began by the pilot bringing the helicopter to a three to five foot hover in order to conduct a power check prior to the application of takeoff power. While the helicopter was at a hover, the flight instructor initiated a hovering autorotation; the pilot immediately applied forward cyclic, and then pulled up on the collective. The flight instructor considered the pilot's flight control inputs to be excessive, resulting in a high sink rate and an undesirable helicopter attitude for touchdown. The instructor immediately took control of the helicopter and brought it back to a level attitude in an attempt to cushion the landing. The flight instructor stated that the main rotor RPM was low and most of the collective had been used to prevent a nose low impact. The helicopter then descended approximately one to two feet, impacting terrain in a level attitude and then bounced forward approximately four feet.

Factual narrative

The 5,591-hour helicopter flight instructor reported he was on the second day of training of a newly hired 10,000-hour commercial helicopter rated pilot. After the pilot's first landing on Runway 03 (4,999-feet long by 150-feet wide asphalt-concrete runway), the flight instructor asked the pilot to perform an Emergency Medical Service (EMS) takeoff (as described in the company's operations manual), and then enter the local traffic pattern. The flight instructor stated that the EMS takeoff procedure began by the pilot bringing the helicopter to a three to five foot hover in order to conduct a power check prior to the application of takeoff power. While the helicopter was at a hover, the flight instructor initiated a hovering autorotation; the pilot immediately applied forward cyclic, and then pulled up on the collective. The flight instructor considered the pilot's flight control inputs to be excessive, resulting in a high sink rate and an undesirable helicopter attitude for touchdown. The instructor immediately took control of the helicopter and brought it back to a level attitude in an attempt to cushion the landing. The flight instructor stated that the main rotor RPM was low and most of the collective had been used to prevent a nose low impact. The helicopter then descended approximately one to two feet, impacting terrain in a level attitude and then bounced forward approximately four feet.

Aircraft

Registration
N911ES
Reported as
Eurocopter France AS-350-B2
Category
Helicopter
Serial number
2665
Airframe hours
5,997
Engine
Turbomeca Arriel 1D1, 712 horsepower, turbo shaft
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
Frederick A. Rappleyea Jr.
Registered owner
Metro Aviation
Airworthiness certificate
Standard, Normal
Last inspection
AAIP · February 1, 2006
Departed
78TS · Harlingen, TX
Destination
KPIL · Port Isabel, TX
Flight plan
Company VFR
Airport
KPIL · Port Isabel - Cameron County, runway 03, 4,999 × 150 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 · 2

As NTSB recorded them. NTSB leaves out names.

Role
Flight instructor
Age
35
Injuries
None
Certificates
Airline transport, Flight instructor
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane, Helicopter
Medical
Class 2, Without waivers/limitations
Last flight review
July 1, 2005
Seat
Left
Flight hours
5,591 total · 1,671 in this make and model · 5,479 as pilot in command · 47 in the last 90 days · 18 in the last 30 days · 2 in the last 24 hours
Role
Student pilot
Age
46
Injuries
None
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Helicopter, Airplane
Medical
Class 1, Without waivers/limitations
Seat
Right
Flight hours
10,000 total

Weather

Conditions
Visual (VMC) · Day
Wind
50° at 3 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
70 °F, dew point 55 °F
Altimeter
30.36 inHg
Observed at
KPIL

FAA reports on this event · 1

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

Other investigations on N911ES · 1

Matched to the same aircraft by N-number and date.