McDonnell Douglas 500N N955SD

Summary

On 8 May 2000 at about 16:25 local time, a McDonnell Douglas 500N registered N955SD was involved in an accident near Los Angeles, California, United States. 2 people were on board and nobody was injured. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

8 May 2000 at 16:25

Classification

Accident

Location

Los Angeles, California, United States

Coordinates

Not recorded

Aircraft

McDonnell Douglas 500N

Registration

N955SD

Category

Helicopter

Engines

1

Operator

Not recorded

Operating rule

Part 91: General Aviation

Purpose of flight

Public Use

Phase of flight

Not recorded

Route

Long Beach → Unknown

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

LAX00TA186

Nobody was injured.

The combined failure of the operator management and the check pilot to ensure the landing area was suitable for the slide on landing. Factors were the high vegetation that entangled the skids, resulting in the abrupt stop and nose down movement of the helicopter, and the training pilot's inappropriate response to the nose pitch down.

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

Read the full NTSB narrative

The flight instructor reported the purpose of the flight was to practice emergency procedures as part of routine intradepartmental training. The training was being conducted in an open field on property owned by the Sheriff's Department. The flight instructor stated that they often utilized the field for flight training purposes, and reported that he had done some training there about 1-week prior. He reported that they performed a high reconnaissance of the field prior to landing and he noted nothing unsuitable about the terrain. A ground survey was not performed prior to the conduct of training flights and landings in the field. The flight instructor stated that he reduced the throttle to ground idle about 10 to 12 feet agl to simulate a total power loss. The pilot trainee was on the controls; he landed the helicopter with no problems. The flight instructor stated that the helicopter slid forward only a few feet, then stopped abruptly. The skids had become entangled in some 18-inch-tall grass and imbedded vines, causing unexpected friction. He stated that the natural tendency to input aft cyclic to stop the aircraft from going over caused the main rotor blades to contact the tail boom.

Quoted verbatim from the NTSB record.