LAX87LA012

NTSB accident investigation · Robinson R-22 · Dolan Springs, AZ · October 7, 1986

Accident · No injuriesLimited investigationFinal report
Date
October 7, 1986, 14:30 local (21:30 UTC)
Place
Dolan Springs, AZ
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N2270CRobinson R-22
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19861007048399A
Case key
25452

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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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.

In flight collision with terrain/waterClimb
Terrain condition - high terrainFactor
In-flight planning/decision - inadequatePilot in commandCause
Weather condition - high density altitudeFactor
Low pass - performedPilot in commandCause
Clearance - misjudgedPilot in commandCause

Analysis

The pilot stated that he was climbing the helicopter up a dry wash and planned to cross a 3000 foot high ridge at about 10 feet above the terrain. As he approached the ridge the helicopter yawed to the right about 70 degrees and the acft main rotor lost RPM. The passenger stated that the acft impacted the ground and nosed over landing in an upright attitude.

Aircraft

Registration
N2270C
Reported as
Robinson R-22
Category
Helicopter
Serial number
0506
Airframe hours
245
Engine
Lycoming O-320-B2C, 124 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Frederick G. Cleeves
Registered owner
Helicopter Services Of Nevada
Airworthiness certificate
Standard, Normal
Departed
LAS · Las Vegas, NV

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
35
Certificate
Commercial
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Right
Flight hours
1,385 total · 1,200 in this make and model · 1,225 as pilot in command · 80 in the last 90 days · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Variable at 5 knots
Visibility
50 statute miles
Lowest ceiling
None
Temperature
70 °F, dew point 36 °F
Altimeter
30.00 inHg

FAA reports on this event · 1

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