ATL01TA081

NTSB accident investigation · Hughes TH-55 · Midway, GA · July 9, 2001

Accident · No injuriesFinal report
Date
July 9, 2001, 13:11 local (17:11 UTC)
Place
Midway, GA
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N7053XHughes TH-55
Weather
Visual (VMC) · Day
Status
Completed · report June 3, 2002
Report
Approved by Office Director
Parties
FAA - Atlanta FSDO
Case key
52710

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

The loss of engine power for undetermined reasons. A factoe was the lack of suitable terrain upon which an emergency landing could be made, which resulted in a rollover upon touchdown in a marshy area.

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.

Loss of engine powerManeuvering - aerial application
Reason for occurrence undeterminedCause
Forced landingEmergency descent/landing
Roll overLanding - flare/touchdown
Terrain condition - none suitableFactor

Analysis

The helicopter lost engine power while spraying insecticide 300 feet above the ground. The pilot was unable to restore power and initiated an emergency descent and autorotative flare. At touchdown, the helicopter leaned to the right in a marshy area and rolled onto its side. The main rotor blades struck the ground. The pilot stated the helicopter had been refueled prior to the flight. Examination of the wreckage revealed the airframe and main rotor blades were bent. The helicopter sustained saltwater submersion damage. There was no evidence of mechanical malfunction.

Factual narrative

On July 9, 2001, at 1311 eastern daylight time, a Hughes TH-55 helicopter, N7053X, registered to Liberty County Commissioners, collided into a marsh following a loss of engine power while spraying insecticide in Midway, Georgia. The helicopter was operated under the provisions of Public Use and visual flight rules. Visual meteorological conditions prevailed, and no flight plan was filed for the local flight. The commercial pilot and pilot-rated passenger were not injured, and the helicopter sustained substantial damage. The flight departed Liberty County Airport in Hinesville, Georgia, at 1230.

According to the pilot, while spraying for mosquitoes 300 feet above the ground, the engine lost power. Attempts to restore power were not successful, and the pilot initiated an emergency descent and autorotative flare. At touchdown, the helicopter leaned to the right in a marshy area and rolled onto its side. The main rotor blades struck the ground. The pilot stated the helicopter had been refueled prior to the flight.

Examination of the wreckage revealed the airframe and main rotor blades were bent. The helicopter sustained saltwater submersion damage prior to the recovery effort. The engine displayed saltwater damage, and saltwater ran from the cylinders when the spark plugs were removed. Attempts to run the engine produced about 10 seconds of operation. There was no evidence of mechanical malfunction.

Aircraft

Registration
N7053X
Reported as
Hughes TH-55
Category
Helicopter
Serial number
67-16823
Airframe hours
13,000
Engine
Lycoming HI0-360-B1A, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Public use
Registered owner
Liberty County Commissioners
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · June 1, 2001 · 49.2 hours before
Departed
2J2 · Hinesville, GA
Destination
2J2 · Hinesville, GA
Airport
2J2 · Liberty County

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

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
54
Injuries
None
Certificates
Flight instructor, Commercial
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--no waivers/lim.
Last flight review
January 20, 2000
Seat
Left
Flight hours
2,500 total · 250 in this make and model · 2,450 as pilot in command · 200 in the last 90 days · 70 in the last 30 days · 10 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
310° at 11 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
93 °F, dew point 73 °F
Altimeter
29.93 inHg
Observed at
MCN, 116 nm away