LAX95LA017

NTSB accident investigation · Enstrom F-28C · La Verne, CA · October 8, 1994

Accident · No injuriesLimited investigationFinal report
Date
October 8, 1994, 07:35 local (14:35 UTC)
Place
La Verne, CA
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N5697DEnstrom F-28C
Weather
Visual (VMC) · Day
Status
Completed · report April 5, 1995
Report
Approved by Office Director
FAA report
19941008035619A
Case key
28968

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

an inadvertant entry into a settling with power condition and the flight instructor's inability to correct the situation due to an inadequate altitude above ground.

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 control - in flightApproach - vfr pattern - final approach
Proper descent rate - not maintainedPilot in command(cfi)Cause
Remedial action - not possiblePilot in command(cfi)
Altitude - inadequatePilot in command(cfi)
Hard landingLanding - flare/touchdown

Analysis

The CFI was giving dual instruction in pinnacle approaches to a practice area plateau at 2,500 feet MSL. A go-around was made on the first approach. According to the CFI, about halfway through the second approach the sight picture had steepened and he started assisting on the controls to regain the proper angle. He stated that within seconds it became obvious that the wind had reversed and was now behind the helicopter which was settling with power. The CFI attempted a recovery; however, there was not enough altitude and the helicopter landed hard. The CFI stated that the winds at the accident site were variable in direction at 10 knots with gusts to 20 knots. There was no wind direction indicator at the accident site.

Factual narrative

On October 8, 1994, at 0735 hours Pacific daylight time, an Enstrom F-28C helicopter, N5697D, was substantially damaged during a hard landing approach near La Verne, California. Visual meteorological conditions prevailed for the instructional flight and no flight plan was filed. Neither the certified flight instructor (CFI) nor the dual student were injured. The flight originated at La Verne about 0720 hours.

The instructor stated that they were to practice pinnacle landings. They flew about 5 miles north to a practice area. The elevation was 2,500 feet mean sea level.

A go-around was made during the first approach. During the second approach, the CFI stated that the site picture had steepened, so he started assisting on the controls to regain the proper angle. The CFI stated: "Within seconds, it became obvious that the wind had reversed and was now behind the helicopter which was settling with power." The CFI attempted a recovery; however, there was not enough altitude, and the helicopter landed hard.

The instructor stated that they had planned their approach into the prevailing wind which was near calm at the time of the accident. He stated that there may have been a wind shear at the time of the approach.

On the pilot/operator accident report form, the CFI reported the winds as variable at 10 knots with gusts to 20 knots. There were no formal wind direction indicators at the accident site.

Aircraft

Registration
N5697D
Reported as
Enstrom F-28C
Category
Helicopter
Serial number
504-2
Airframe hours
1,672
Engine
Lycoming HIO-360-E1BD, 205 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
Robert F. Beck
Registered owner
Robert F. Beck
Airworthiness certificate
Standard, Normal
Last inspection
Annual · March 24, 1994 · 26 hours before
Departed
POC · CA
Destination
POC · 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
25
Certificate
Commercial
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Right
Flight hours
847 total · 827 in this make and model · 743 as pilot in command · 176 in the last 90 days · 56 in the last 30 days · 5 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Visibility
70 statute miles
Lowest ceiling
None
Temperature
64 °F
Observed at
POC, 5 nm away

FAA reports on this event · 1

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