National Transportation Safety Board
Aviation Accident Preliminary Report

 

 

Location:

Mesa, AZ

Accident Number:

WPR20LA130

Date & Time:

04/24/2020, 1600 MST

Registration:

N3276T

Aircraft:

Bell UH 1H

Injuries:

1 Fatal, 1 Serious

Flight Conducted Under:

Part 91: General Aviation - Positioning

 

On April 24, 2020, about 1600 mountain standard time, a Bell UH-1H helicopter, N3276T, was substantially damaged when it was involved in an accident in Mesa, Arizona. The pilot was fatally injured, and the passenger was seriously injured. The helicopter was operated as a Title 14 Code of Federal Regulations (CFR) Part 91 relocation flight.

Witnesses reported they observed the helicopter flying low towards Falcon Field Airport (FFZ), Mesa, Arizona, with white smoke coming from the rear rotor area. Suddenly, the tail rotor separated from the helicopter and landed in a dirt lot below. The helicopter continued northeast as it started to spin and impact the ground.

On scene examination by a Federal Aviation Administration Inspector indicated that the debris field was about 1/2 mile, extending along a generally northeast direction. The first identified piece of debris were fragments of glass, which were consistent with a navigation light on the vertical stabilizer. About 200 yards further northeast was the tail rotor assembly, and the input pinion gear assembly. The rest of the helicopter came to rest about ½ mile further northeast in an open, slightly sloped field. The first pieces of debris in the field were the vertical stabilizer and a portion of the horizontal stabilizer followed by two long and narrow ground strikes consistent with main rotor blade strikes. Immediately following this area was the main wreckage; the helicopter came to rest slightly nose, and left side low, along a heading of about 49 degrees. The helicopter exhibited upward crushing throughout the cabin and fuselage, most extensively on the left side of the fuselage. The mast and the main transmission were displaced forward, and the main rotor assembly was fracture separated. The main rotor blade assembly was the last major piece of debris located about 20 yards northeast of the main wreckage.

The helicopter has been recovered to a secure location for further examination.

 

 

Aircraft and Owner/Operator Information

Aircraft Make:

Bell

Registration:

N3276T

Model/Series:

UH 1H No Series

Aircraft Category:

Helicopter

Amateur Built:

No

 

 

Operator:

Southwest Rotors

Operating Certificate(s) Held:

Agricultural Aircraft (137); Rotorcraft External Load (133)

 

Meteorological Information and Flight Plan

Conditions at Accident Site:

Visual Conditions

Condition of Light:

Day

Observation Facility, Elevation:

IWA, 1384 ft msl

Observation Time:

1550 MST

Distance from Accident Site:

9 Nautical Miles

Temperature/Dew Point:

35°C / 0°C

Lowest Cloud Condition:

Clear

Wind Speed/Gusts, Direction:

6 knots / , 280°

Lowest Ceiling:

None

Visibility

10 Miles

Altimeter Setting:

29.85 inches Hg

Type of Flight Plan Filed:

None

Departure Point:

Palm Springs, CA (TRM)

Destination:

Mesa, AZ (FFZ)

 

Wreckage and Impact Information

Crew Injuries:

1 Fatal

Aircraft Damage:

Substantial

Passenger Injuries:

1 Serious

Aircraft Fire:

None

Ground Injuries:

N/A

Aircraft Explosion:

None

Total Injuries:

1 Fatal, 1 Serious

Latitude, Longitude:

33.386111, -111.805833 (est)

 

Administrative Information

Investigator In Charge (IIC):

Samantha A Link

Additional Participating Persons:

Gary Hendrickson; Federal Aviation Administration; Scottsdale, AZ

Marlin Kruse; Honeywell Aerospace; Phoenix, AZ

Note:

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