LAX96LA224

NTSB accident investigation · Robinson R22 Beta · Santa Clarita, CA · June 7, 1996

Accident · Minor injuriesLimited investigationFinal report
Date
June 7, 1996, 16:15 local (23:15 UTC)
Place
Santa Clarita, CA
Injuries
2 minor
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N40009Robinson R22 Beta
Weather
Visual (VMC) · Day
Status
Completed · report August 25, 1997
Report
Approved by Office Director
FAA report
19960607013089A
Case key
29466

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 pilot's failure to abandon the pinnacle approach after encountering an excessive rate of descent.

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.

UndershootApproach
Terrain condition - pinnacle
Weather condition - downdraft
Proper descent rate - exceededPilot in commandCause
Go-around - not performedPilot in commandCause
In flight collision with terrain/waterLanding - flare/touchdown
Terrain condition - drop-off/descending embankment
Roll overLanding - roll

Analysis

The pilot was making a pinnacle approach to the leeward side of a ridge. As he approached his touchdown point his airspeed was slowing to just above effective translational lift (ETL) when the aircraft was caught in a downdraft. He attempted to maneuver the aircraft but was unable to stop his decent or redirect his forward movement. The aircraft undershot the approach and struck the side of the ridge. The pilot said he had performed a high reconnaissance orbit and had monitored ATIS surface winds.

Factual narrative

On June 7, 1996, about 1615 hours Pacific daylight time, a Robinson R22 Beta, N40009, collided with the terrain while on approach to an off-airport landing site in Santa Clarita, California. The aircraft sustained substantial damage and the certificated private helicopter pilot and his passenger received minor injuries. The aircraft was being operated by Group III Aviation, Van Nuys, California, and had been rented by the pilot for a personal flight when the accident occurred. The flight originated in Van Nuys about 1500 on the afternoon of the accident. Visual meteorological conditions prevailed at the time and no flight plan had been filed.

The pilot reported that he was making a pinnacle approach to the leeward side of a ridge in Pico Canyon. He was about 100 feet from touchdown with his airspeed slowing to 30 knots when the aircraft was caught in a downdraft that caused him to undershoot the approach. He attempted to maneuver the aircraft, but was unable to prevent the aircraft from striking the side of the ridge. After impact the aircraft rolled down the ridge and came to rest on its side.

Before the approach, the pilot said he had performed a high reconnaissance orbit at 200 feet above the pinnacle and had monitored surface winds on Van Nuys ATIS frequency. He reported no mechanical problems.

Aircraft

Registration
N40009
Reported as
Robinson R22 Beta
Category
Helicopter
Serial number
1376
Airframe hours
4,114
Engine
Lycoming O-320-B2C, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Peter Lowery, doing business as Group 3 Aviation, Inc.
Registered owner
Dragonfly Corp
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · May 31, 1996 · 12 hours before
Departed
VNY · Van Nuys, CA

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
59
Certificates
Commercial, Private
Airplane ratings
Multi-engine land, Single-engine land
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Right
Flight hours
668 total · 173 in this make and model · 415 as pilot in command · 3 in the last 90 days · 2 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
110° at 10 knots
Visibility
5 statute miles
Lowest ceiling
None
Temperature
82 °F, dew point 61 °F
Altimeter
29.00 inHg
Observed at
VNY

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.