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NTSB Final Report: Immokalee, FL

Location:

Immokalee, Florida

Accident Number:

ERA23LA350

Date & Time:

August 26, 2023, 11:45 Local

Registration:

N4147Q

Aircraft:

ROBINSON HELICOPTER R44

Aircraft Damage:

Substantial

Defining Event:

Loss of control in flight

Injuries:

1 Serious, 2 Minor

Flight Conducted Under:     Part 91: General aviation - Instructional

Analysis

The flight instructor stated that the accident flight was an introductory flight for a new student pilot. He stated that during an introductory flight, it was normal for a student pilot to take the cyclic control and get familiar with the “feel” of the helicopter. During the accident pilot, the student pilot hovered the helicopter at 10 ft above ground level for about 10 minutes with no anomalies, then suddenly, the student pilot pushed the cyclic forward and to the right “very fast.” The flight instructor could not regain control before the main rotor contacted the ground. The helicopter rolled to the right and came to rest on tits right side, sustaining substantial damage to the main rotor mast, tail rotor, and fuselage. The flight instructor stated there were no preimpact mechanical malfunctions or failures of the helicopter that would have precluded normal operation.

Probable Cause and Findings

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

The flight instructor’s inadequate supervision of the student pilot during hover flight, which resulted in main rotor blade contact with the ground after the student pilot applied a sudden control input.

Findings

Personnel issues - Monitoring other person - Instructor/check pilot

Aircraft - Lateral/bank control - Not attained/maintained


Factual Information

History of Flight

Maneuvering-hover                           Loss of control in flight (Defining event)

Flight instructor Information

Certificate:

Commercial; Flight instructor

Age:

47,Male

Airplane Rating(s):

None

Seat Occupied:

Left

Other Aircraft Rating(s):

Helicopter

Restraint Used:

3-point

Instrument Rating(s):

None

Second Pilot Present:

Yes

Instructor Rating(s):

Helicopter

Toxicology Performed:

 

Medical Certification:

Class 2 Without waivers/limitations

Last FAA Medical Exam:

May 10, 2022

Occupational Pilot:

Yes

Last Flight Review or Equivalent:

April 1, 2023

Flight Time:

3383 hours (Total, all aircraft), 3100 hours (Total, this make and model), 3328 hours (Pilot In Command, all aircraft), 26 hours (Last 90 days, all aircraft), 8 hours (Last 30 days, all aircraft),

1.5 hours (Last 24 hours, all aircraft)

Student pilot Information

Certificate:

None                                                         Age:

 

Airplane Rating(s):

None                                                         Seat Occupied:

Right

Other Aircraft Rating(s):

None                                                                   Restraint Used:

3-point

Instrument Rating(s):

None                                                                   Second Pilot Present:

Yes

Instructor Rating(s):

None                                                                   Toxicology Performed:

 

Medical Certification:

None None                                               Last FAA Medical Exam:

 

Occupational Pilot:

No                                                             Last Flight Review or Equivalent:

 

Flight Time:

0 hours (Total, all aircraft), 0 hours (Total, this make and model)

 

Aircraft and Owner/Operator Information

Aircraft Make:

ROBINSON HELICOPTER

Registration:

N4147Q

Model/Series:

R44 NO SERIES

Aircraft Category:

Helicopter

Year of Manufacture:

2008

Amateur Built:

 

Airworthiness Certificate:

Normal

Serial Number:

1844

Landing Gear Type:

Skid

Seats:

4

Date/Type of Last Inspection:

June 29, 2023 Annual

Certified Max Gross Wt.:

2400 lbs

Time Since Last Inspection:

 

Engines:

1 Reciprocating

Airframe Total Time:

2000 Hrs as of last inspection

Engine Manufacturer:

Lycoming

ELT:

Not installed

Engine Model/Series:

O-540

Registered Owner:

AIRMAN HELICOPTER INC

Rated Power:

200 Horsepower

Operator:

On file

Operating Certificate(s) Held:

None

Meteorological Information and Flight Plan

Conditions at Accident Site:

Visual (VMC)

Condition of Light:

Day

Observation Facility, Elevation:

RSW,27 ft msl

Distance from Accident Site:

20 Nautical Miles

Observation Time:

11:53 Local

Direction from Accident Site:

289°

Lowest Cloud Condition:

Clear

Visibility

10 miles

Lowest Ceiling:

None

Visibility (RVR):

 

Wind Speed/Gusts:

9 knots / 16 knots

Turbulence Type Forecast/Actual:

None / None

Wind Direction:

60°

Turbulence Severity Forecast/Actual:

N/A / N/A

Altimeter Setting:

29.86 inches Hg

Temperature/Dew Point:

32°C / 22°C

Precipitation and Obscuration:

No Obscuration; No Precipitation

 

Departure Point:

Immokalee, FL

Type of Flight Plan Filed:

None

Destination:

Immokalee, FL

Type of Clearance:

None

Departure Time:

Type of Airspace:

Class G

Airport Information

Airport:

 

IMMOKALEE RGNL IMM

Runway Surface Type:

Asphalt

Airport Elevation:

37 ft msl

Runway Surface Condition:

Dry

Runway Used:

36

IFR Approach:

None

Runway Length/Width:

4550 ft / 150 ft

VFR Approach/Landing:

Traffic pattern

Wreckage and Impact Information

Crew Injuries:

2 Minor

Aircraft Damage:

Substantial

Passenger Injuries:

1 Serious

Aircraft Fire:

None

Ground Injuries:

 

Aircraft Explosion:

None

Total Injuries:

1 Serious, 2 Minor

Latitude, Longitude:

26.429063,-81.40478

Administrative Information

Investigator In Charge (IIC):

Boggs, Daniel

Additional Participating Persons:

Juan Garcia; FAA/FSDO; Miramar, FL

Original Publish Date:

November 9, 2023

Investigation Class:

Class 4

Note:

The NTSB did not travel to the scene of this accident.

Investigation Docket:

https://data.ntsb.gov/Docket?ProjectID=192947

The National Transportation Safety Board (NTSB) is an independent federal agency charged by Congress with investigating every civil aviation accident in the United States and significant events in other modes of transportation— railroad, transit, highway, marine, pipeline, and commercial space. We determine the probable causes of the accidents and events we investigate, and issue safety recommendations aimed at preventing future occurrences. In addition, we conduct transportation safety research studies and offer information and other assistance to family members and survivors for each accident or event we investigate. We also serve as the appellate authority for enforcement actions involving aviation and mariner certificates issued by the Federal Aviation Administration (FAA) and US Coast Guard, and we adjudicate appeals of civil penalty actions taken by the FAA.

 

The NTSB does not assign fault or blame for an accident or incident; rather, as specified by NTSB regulation, “accident/incident investigations are fact-finding proceedings with no formal issues and no adverse parties … and are not conducted for the purpose of determining the rights or liabilities of any person” (Title 49 Code of Federal Regulations section 831.4). Assignment of fault or legal liability is not relevant to the NTSB’s statutory mission to improve transportation safety by investigating accidents and incidents and issuing safety recommendations. In addition, statutory language prohibits the admission into evidence or use of any part of an NTSB report related to an accident in a civil action for damages resulting from a matter mentioned in the report (Title 49 United States Code section 1154(b)). A factual report that may be admissible under 49 United States Code section 1154(b) is available here.

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Created 100 days ago
by Admin

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