LAX95LA051

NTSB accident investigation · American AA-1 · Oasis, CA · December 15, 1994

Accident · Serious injuriesLimited investigationFinal report
Date
December 14, 1994, 16:20 local (Dec 15, 1994, 00:20 UTC)
Place
Oasis, CA
Injuries
2 serious
Damage
Destroyed
Phase of flight
Maneuvering
Aircraft
N6236LAmerican AA-1
Weather
Visual (VMC) · Day
Status
Completed · report August 31, 1995
Report
Approved by Office Director
FAA report
19941214043459A
Case key
28993

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 improper inflight decision by selecting an inadequate terrain clearance altitude over mountainous terrain.

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/waterManeuvering
Terrain condition - rising
Terrain condition - blind/box canyon
In-flight planning/decision - improperPilot in commandCause
Altitude/clearance - inadequatePilot in commandCause

Analysis

The commercial pilot and passenger went on a sightseeing flight. According to the pilot, after flying for about 30 minutes he turned away from low elevation terrain and began flying 'lengthwise over a picturesque canyon.' The pilot reported that as the elevation of the terrain increased, he applied full engine power and began maneuvering at the best angle of climb airspeed. The pilot indicated that he was not able to climb over the rising terrain. The airplane crashed into the box canyon. No mechanical problems were experienced during the flight.

Factual narrative

On December 14, 1994, at 1620 hours Pacific standard time, an American AA-1, N6236L, owned and operated by the pilot, collided with mountainous terrain while maneuvering up a box canyon about 10 nautical miles southwest of Thermal, California. Visual meteorological conditions prevailed during the personal flight, and no flight plan was filed. The airplane was destroyed, and the commercial pilot and pilot-rated passenger were seriously injured. The flight originated from Palm Springs, California, on the day of the accident at 1535.

In the pilot's accident report, he indicated that during the initial portion of the sightseeing flight he flew on a southeasterly direction near the cities of Palm Springs, Palm Desert, and Bermuda Dunes. After flying for about 30 minutes, he turned westerly to "fly lengthwise over a picturesque canyon."

The pilot further reported that as the elevation of the terrain increased, he applied full engine power and attempted to gain altitude while climbing at the best angle of climb airspeed. The pilot indicated that the airplane was not able to climb over the rising terrain, and there was insufficient maneuvering room from the hillsides to reverse course. During the accident flight, no mechanical malfunctions or failures were experienced with the airplane.

Aircraft

Registration
N6236L
Reported as
American AA-1
Category
Airplane
Serial number
436
Airframe hours
1,919
Engine
Lycoming O-235-C2C, 108 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Operator
Nathan Carriker
Registered owner
Millard & Nathan Carriker
Airworthiness certificate
Standard, Utility; Standard, Normal
Last inspection
Annual · May 4, 1994 · 45 hours before
Departed
PSP · Palm Springs, 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
24
Certificates
Commercial, Flight instructor
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
4,135 total · 394 in this make and model · 796 as pilot in command · 162 in the last 90 days · 5 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Visibility
40 statute miles
Lowest ceiling
None
Temperature
64 °F

FAA reports on this event · 1

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