Brock 162F N623LB

Summary

On 7 April 1998 at about 23:30 local time, a Brock 162F registered N623LB was involved in an accident near Canton, Georgia, United States. 2 people were on board and one was seriously injured, one had minor injuries. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

7 April 1998 at 23:30

Classification

Accident

Location

Canton, Georgia, United States

Coordinates

34.2391, -84.4906

Aircraft

Brock 162F

Registration

N623LB

Category

Helicopter

Engines

1

Operator

Not recorded

Operating rule

Part 91: General Aviation

Purpose of flight

Personal

Phase of flight

Not recorded

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

MIA98LA122

1 person was seriously injured.

the pilot's improper use of throttle and collective pitch during initial takeoff climb, which resulted in a decay of rotor rpm and settling of the helicopter into a lake.

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

The pilot stated he experienced a loss of rotor rpm during initial takeoff climb over a lake. He said he 'added max power & decreased collective; no increase in rotor rpm noted.' The helicopter was turned toward the shore, and the pilot lowered the collective pitch to increase rotor rpm, but with negative results. Subsequently, the helicopter settled into the water and sank. Examination of the engine control unit (ECU) (at an authorized repair facility) revealed the engine rpm steadily decreased as the percentage of throttle position was increased 'right up until impact, eleven (11) seconds from lift off.' An FAA inspector, who participated in the investigation, stated 'The pilot apparently applied too much collective pitch too soon and it appears he basically got behind the power curve.'

Quoted verbatim from the NTSB record.