National Transportation Safety Board
Aviation Accident Final Report

 

 

Location:

Gaithersburg, MD

Accident Number:

DCA15MA029

Date & Time:

12/08/2014, 1041 EST

Registration:

N100EQ

Aircraft:

EMBRAER EMB-500

Aircraft Damage:

Destroyed

Defining Event:

Loss of control in flight

Injuries:

6 Fatal

Flight Conducted Under:

Part 91: General Aviation - Personal

Analysis

The NTSB's full report is available at http://www.ntsb.gov/investigations/AccidentReports/Pages/AccidentReports.aspx. The Aircraft Accident Report number is NTSB/AAR-16/01.

On December 8, 2014, about 1041 eastern standard time, an Embraer EMB-500 airplane (marketed as the Phenom 100), N100EQ, registered to and operated by Sage Aviation LLC, crashed while on approach to runway 14 at Montgomery County Airpark (GAI), Gaithersburg, Maryland. The airplane impacted three houses and the ground about 3/4 mile from the approach end of the runway. A postcrash fire involving the airplane and one of the three houses, which contained three occupants, ensued. The pilot, the two passengers, and the three people in the house died as a result of the accident. The airplane was destroyed by impact forces and postcrash fire. The flight was operating on an instrument flight rules (IFR) flight plan under the provisions of 14 Code of Federal Regulations (CFR) Part 91. Visual meteorological conditions prevailed at the time of the accident.

Probable Cause and Findings

The National Transportation Safety Board determines the probable cause(s) of this accident to be:
the pilot's conduct of an approach in structural icing conditions without turning on the airplane's wing and horizontal stabilizer deice system, leading to ice accumulation on those surfaces, and without using the appropriate landing performance speeds for the weather conditions and airplane weight, as indicated in the airplane's standard operating procedures, which together resulted in an aerodynamic stall at an altitude at which a recovery was not possible.

Findings

Personnel issues

Lack of action - Pilot (Cause)

Environmental issues

Conditions/weather/phenomena - Effect on equipment (Factor)

Factual Information

The NTSB's full report is available at http://www.ntsb.gov/investigations/AccidentReports/Pages/AccidentReports.aspx. The Aircraft Accident Report number is NTSB/AAR-16/01.

On December 8, 2014, about 1041 eastern standard time, an Embraer EMB-500 airplane (marketed as the Phenom 100), N100EQ, registered to and operated by Sage Aviation LLC, crashed while on approach to runway 14 at Montgomery County Airpark (GAI), Gaithersburg, Maryland. The airplane impacted three houses and the ground about 3/4 mile from the approach end of the runway. A postcrash fire involving the airplane and one of the three houses, which contained three occupants, ensued. The pilot, the two passengers, and the three people in the house died as a result of the accident. The airplane was destroyed by impact forces and postcrash fire. The flight was operating on an instrument flight rules (IFR) flight plan under the provisions of 14 Code of Federal Regulations (CFR) Part 91. Visual meteorological conditions prevailed at the time of the accident.

 

 

History of Flight

Enroute-descent

Structural icing

Approach-IFR final approach

Loss of control in flight (Defining event)

Collision with terr/obj (non-CFIT)

 

 

Pilot Information

Certificate:

Airline Transport; Flight Instructor

Age:

66, Male

Airplane Rating(s):

Multi-engine Land; Single-engine Land

Seat Occupied:

Left

Other Aircraft Rating(s):

None

Restraint Used:

 

Instrument Rating(s):

Airplane

Second Pilot Present:

No

Instructor Rating(s):

Airplane Single-engine

Toxicology Performed:

Yes

Medical Certification:

Class 2 With Waivers/Limitations

Last FAA Medical Exam:

02/07/2014

Occupational Pilot:

No

Last Flight Review or Equivalent:

04/28/2014

Flight Time:

4736.5 hours (Total, all aircraft), 135.9 hours (Total, this make and model)

 

 

Aircraft and Owner/Operator Information

Aircraft Make:

EMBRAER

Registration:

N100EQ

Model/Series:

EMB-500

Aircraft Category:

Airplane

Year of Manufacture:

 

Amateur Built:

No

Airworthiness Certificate:

Normal

Serial Number:

50000082

Landing Gear Type:

Retractable - Tricycle

Seats:

6

Date/Type of Last Inspection:

11/14/2014, Continuous Airworthiness

Certified Max Gross Wt.:

10472 lbs

Time Since Last Inspection:

 

Engines:

2 Turbo Jet

Airframe Total Time:

633.8 Hours as of last inspection

Engine Manufacturer:

P&W CANADA

ELT:

C126 installed, activated, did not aid in locating accident

Engine Model/Series:

PW617F-E

Registered Owner:

SAGE AVIATION LLC

Rated Power:

0 hp

Operator:

SAGE AVIATION LLC

Operating Certificate(s) Held:

None

 

Meteorological Information and Flight Plan

Conditions at Accident Site:

Instrument Conditions

Condition of Light:

Day

Observation Facility, Elevation:

GAI

Distance from Accident Site:

 

Observation Time:

1035 EST

Direction from Accident Site:

 

Lowest Cloud Condition:

Few / 2100 ft agl

Visibility

10 Miles

Lowest Ceiling:

Overcast / 3200 ft agl

Visibility (RVR):

 

Wind Speed/Gusts:

6 knots /

Turbulence Type Forecast/Actual:

/

Wind Direction:

40°

Turbulence Severity Forecast/Actual:

/

Altimeter Setting:

30.61 inches Hg

Temperature/Dew Point:

-1°C / -7°C

Precipitation and Obscuration:

 

Departure Point:

Chapel Hill, NC (IGX)

Type of Flight Plan Filed:

IFR

Destination:

Gaithersburg, MD (GAI)

Type of Clearance:

IFR

Departure Time:

0945 EST

Type of Airspace:

 

 

Airport Information

Airport:

MONTGOMERY COUNTY AIRPARK (GAI)

Runway Surface Type:

Asphalt

Airport Elevation:

538 ft

Runway Surface Condition:

Unknown

Runway Used:

14

IFR Approach:

Global Positioning System; RNAV

Runway Length/Width:

4202 ft / 75 ft

VFR Approach/Landing:

None

 

Wreckage and Impact Information

Crew Injuries:

1 Fatal

Aircraft Damage:

Destroyed

Passenger Injuries:

2 Fatal

Aircraft Fire:

On-Ground

Ground Injuries:

3 Fatal

Aircraft Explosion:

None

Total Injuries:

6 Fatal

Latitude, Longitude:

39.180278, -77.180556

 


 


Administrative Information

Investigator In Charge (IIC):

Timothy LeBaron

Report Date:

06/21/2016

Additional Participating Persons:

Patrick Hempen; Federal Aviaton Administration; Washington, DC

Earl Chapman; Transportation Safety Board of Canada

Thiago Lirio; Aeronautical Accidents Investigation and Preventio

Publish Date:

06/21/2016

Note:

The NTSB traveled to the scene of this accident.

Investigation Docket:

http://dms.ntsb.gov/pubdms/search/dockList.cfm?mKey=90473