Wednesday, January 24, 2018

Guimbal Cabri G2, N989HH: Accident occurred January 22, 2018 at St. Louis Downtown Airport (KCPS), Cahokia, St. Clair County, Illinois

Additional Participating Entity: 
Federal Aviation Administration / Flight Standards District Office; St. Louis, Missouri 

Aviation Accident Final Report - National Transportation Safety Board:

Investigation Docket  - National Transportation Safety Board:

Aviation Accident Final Report - National Transportation Safety Board

Location: Cahokia, IL
Accident Number: GAA18CA110
Date & Time: 01/22/2018, 1115 CST
Registration: N989HH
Aircraft Damage: Substantial
Defining Event: Loss of control in flight
Injuries: 2 Minor
Flight Conducted Under: Part 91: General Aviation - Instructional 

The helicopter flight instructor reported that, the student pilot was performing a normal approach to a hover with a quartering gusting headwind. He added that, he "reminded" the student of the need to anticipate right pedal input as they applied power to terminate to a hover. Subsequently, the student pilot did not add sufficient "right pedal", and the helicopter immediately and very rapidly yawed to the left. The flight instructor said, "my controls" and attempted to recover, but the helicopter continued to spin counterclockwise, touched down and rolled onto its right side.

The helicopter sustained substantial damage to the fuselage and main rotor system.

The flight instructor and student reported that there were no preaccident mechanical failures or malfunctions with the helicopter that would have precluded normal operation.

The automated weather observation system on the accident airport reported, about the time of the accident that the wind was from 170° at 11 knots, gusting to 22 knots. The student pilot attempted to hover on runway 12L.

Probable Cause and Findings

The National Transportation Safety Board determines the probable cause(s) of this accident to be:
The student pilot's failure to maintain yaw control while landing in gusting crosswind conditions and the flight instructor's delayed remedial action.


Yaw control - Not attained/maintained (Cause)

Personnel issues
Aircraft control - Student pilot (Cause)
Delayed action - Instructor/check pilot (Cause)

Environmental issues
Crosswind - Effect on operation
Gusts - Effect on operation

Factual Information

History of Flight

Loss of control in flight
Attempted remediation/recovery
Controlled flight into terr/obj (CFIT)


Roll over

Flight Instructor Information

Certificate: Flight Instructor; Commercial
Age: 32, Male
Airplane Rating(s): None
Seat Occupied: Left
Other Aircraft Rating(s): Helicopter
Restraint Used: 4-point
Instrument Rating(s): Helicopter
Second Pilot Present: Yes
Instructor Rating(s): Helicopter
Toxicology Performed: No
Medical Certification: Class 2 Without Waivers/Limitations
Last FAA Medical Exam: 12/08/2017
Occupational Pilot: Yes
Last Flight Review or Equivalent: 10/02/2017
Flight Time:  (Estimated) 203 hours (Total, all aircraft), 75 hours (Total, this make and model), 119 hours (Pilot In Command, all aircraft), 20 hours (Last 90 days, all aircraft), 10 hours (Last 30 days, all aircraft), 2 hours (Last 24 hours, all aircraft)

Student Pilot Information

Certificate: Flight Instructor; Commercial
Age: 43, Male
Airplane Rating(s): Multi-engine Land; Multi-engine Sea; Single-engine Land; Single-engine Sea
Seat Occupied: Right
Other Aircraft Rating(s): Glider; Gyroplane
Restraint Used: 4-point
Instrument Rating(s):
Second Pilot Present: Yes
Instructor Rating(s): Airplane Multi-engine; Airplane Single-engine; Instrument Airplane
Toxicology Performed: No
Medical Certification: Class 1 With Waivers/Limitations
Last FAA Medical Exam: 12/11/2017
Occupational Pilot: No
Last Flight Review or Equivalent: 07/16/2016
Flight Time:  (Estimated) 1015 hours (Total, all aircraft), 5 hours (Total, this make and model), 50 hours (Last 90 days, all aircraft), 15 hours (Last 30 days, all aircraft)

Aircraft and Owner/Operator Information

Aircraft Manufacturer: HELICOPTERES GUIMBAL
Registration: N989HH
Model/Series: CABRI G2 NO SERIES
Aircraft Category: Helicopter
Year of Manufacture: 2015
Amateur Built: No
Airworthiness Certificate: Normal
Serial Number: 1124
Landing Gear Type: Skid
Seats: 2
Date/Type of Last Inspection: 12/05/2017, 100 Hour
Certified Max Gross Wt.: 1543 lbs
Time Since Last Inspection:
Engines: 1 Reciprocating
Airframe Total Time: 850.4 Hours as of last inspection
Engine Manufacturer: Lycoming
ELT: C126 installed, not activated
Engine Model/Series: O-360-J2A
Registered Owner: D H HELICOPTER INC
Rated Power: 180 hp
Operating Certificate(s) Held: Pilot School (141) 

Meteorological Information and Flight Plan

Conditions at Accident Site: Visual Conditions
Condition of Light: Day
Observation Facility, Elevation: KCPS, 413 ft msl
Observation Time: 1653 UTC
Distance from Accident Site: 0 Nautical Miles
Direction from Accident Site: 259°
Lowest Cloud Condition: Clear
Temperature/Dew Point: 15°C / 9°C
Lowest Ceiling: None
Visibility:  10 Miles
Wind Speed/Gusts, Direction: 11 knots/ 22 knots, 170°
Visibility (RVR):
Altimeter Setting: 29.55 inches Hg
Visibility (RVV):
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: Cahokia, IL (CPS)
Type of Flight Plan Filed: VFR
Destination: Cahokia, IL (CPS)
Type of Clearance: VFR
Departure Time: 1100 CST
Type of Airspace: Class D

Airport Information

Runway Surface Type: Concrete
Airport Elevation: 412 ft
Runway Surface Condition: Dry
Runway Used: 12L
IFR Approach: None
Runway Length/Width: 5301 ft / 75 ft
VFR Approach/Landing: Stop and Go 

Wreckage and Impact Information

Crew Injuries: 2 Minor
Aircraft Damage: Substantial
Passenger Injuries: N/A
Aircraft Fire: None
Ground Injuries: N/A
Aircraft Explosion: None
Total Injuries: 2 Minor
Latitude, Longitude:  38.571389, -90.154444 (est)

CAHOKIA, Ill. - The Federal Aviation Administration is investigating what caused a helicopter to crash Monday morning at the St. Louis Downtown airport. The helicopter landed on its roof before breaking into pieces.

Debris was scattered across the fields near the landing strip, but the two men inside walked out of the wreckage.

Fire officials say the crash happened around 11:14 a.m. at the airfield in Cahokia, Illinois. The cockpit remained intact but toppled on its side. The tail boom is clipped off and the propeller is in pieces.

The two men inside the chopper, believed to be a flying instructor and a student, climbed out on their own. This was a training flight with the Midwest Helicopter Training Academy.

A spokesperson with Jet Aviation at the airport said during training exercises they typically fly lower to the ground which may have lessened the impact in this case.

People working in the air traffic control tower saw the crash and alerted emergency workers.

“They were talking to our air traffic control tower, but they did not contact air traffic control tower as the crash happened. Air traffic control tower activated our alert tones as soon as they saw the crash," said Michael Mavrogeorge, the Fire Chief and Emergency Management Director of St. Louis Downtown Airport.

The men suffered minor cuts, bumps, and bruises. They were taken to Saint Louis University hospital to get checked out.

Fox 2 and KPLR 11 reached out to the Midwest Helicopter Academy for comment but they declined since the crash is under investigation.

Story and video  ➤

CAHOKIA • Two people were able to climb out of a training helicopter after it crashed at St. Louis Downtown Airport in Cahokia on Monday morning.

The two people inside were taken to SSM Health St. Louis University Hospital with minor injuries after the crash at about 11:15 a.m.

"Minor injuries. Very lucky," said Chief Michael Mavrogeorge of the airport's fire department. "There was no fire after the aircraft crashed."

On board were an instructor and a student, KTVI reported. Mavrogeorge did not immediately have information about the occupants.

The airport is about four miles southeast of downtown St. Louis. Mavrogeorge said the control tower dispatched his crew to the crash, and arriving firefighters found the helicopter on its roof with two people climbing out.

The Federal Aviation Administration will investigate the crash, Mavrogeorge said.

Story, video and photos  ➤

Chief Michael Mavrogeorge

CAHOKIA, Ill. ( – Emergency crews are on the scene after a helicopter crashed at St. Louis Downtown Airport in Cahokia.

The crash occurred near hangar 18 at the airport on Archview Drive before 11:30 a.m. Monday.

Witnesses said there were two people, a student pilot and flight instructor, in the helicopter at the time of the crash. 

According to officials, the helicopter, which is owned by the Midwest Helicopter Training Academy, was being used for a training exercise when it crashed.

Officials with St. Clair County told News 4 the occupants of the helicopter sustained minor injuries. They were both taken to the hospital following the crash. 

The FAA has been notified of the crash. 

No other details have been released.

Story and photo gallery ➤

No comments:

Post a Comment