MBB BO 105LS A-3 N811CE

Summary

On 28 May 1999 at about 13:48 local time, a MBB BO 105LS A-3 registered N811CE, operated by Southern California Edison, was involved in an accident near Huntington Bch, California, United States. 3 people were on board and 3 died. The aircraft was destroyed. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

28 May 1999 at 13:48

Classification

Accident

Location

Huntington Bch, California, United States

Coordinates

33.7194, -118.0001

Aircraft

MBB BO 105LS A-3

Registration

N811CE

Category

Helicopter

Engines

2

Operator

Southern California Edison

Operating rule

Part 91: General Aviation

Purpose of flight

Executive/Corporate

Phase of flight

Not recorded

Route

El Toro → Pebbly Beach

Aircraft damage

Destroyed

Weather

VMC

Light

Day

NTSB number

LAX99FA200

3 people died.

The pilot's in-flight loss of control due to spatial disorientation while maneuvering to reverse direction after an inadvertent encounter with instrument meteorological conditions.

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

Read the full NTSB narrative

The purpose of the flight was to transport two company employees to an island located 22 miles offshore. The pilot was not instrument rated. The weather conditions along the coast consisted of overcast skies with cloud bases from 700 to 1,100 feet, and, tops between 1,900 and 2,200 feet; visibilities were generally in the 4- to 5-mile range. Ground and pilot witnesses said that a localized area of lower cloud bases, between 350 and 500 feet, and reduced visibilities of about 1.5 miles existed in the area of the accident site. Review of recorded radar data disclosed that the helicopter descended from a cruise altitude of 900 feet and crossed the shoreline at 400 feet. As the helicopter reached the accident site location, it climbed to 600 feet over 19 seconds, then turned right to a northerly heading while the altitude climbed from 600 to 900 feet; the radius of turn was calculated at 720 feet at an average ground speed of 69 knots. The helicopter then descended to 700 feet as the radar track began a wide left turn, which then reversed to a tight right turn. The last four radar returns showed a right turn with a 120-foot radius, with a constant Mode C report of 700 feet; the average computed ground speed during this turn was 67 knots. The last radar return was a secondary beacon without a Mode C altitude report; the location of the last radar return was about 200 feet from where the wreckage was found on the ocean floor. No preimpact mechanical malfunctions or failures were found during examination of the wreckage.

Quoted verbatim from the NTSB record.