LAX97LA106

NTSB accident investigation · Aeronca 7AC · Rubidoux, CA · February 23, 1997

Accident · Minor injuriesLimited investigationFinal report
Date
February 23, 1997, 09:10 local (17:10 UTC)
Place
Rubidoux, CA
Injuries
2 minor
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N84486Aeronca 7AC
Weather
Visual (VMC) · Day
Status
Completed · report May 21, 1998
Report
Approved by Office Director
FAA report
19970223001769A
Case key
29729

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 inadequate compensation for the existing gusty crosswind condition, and his failure to maintain runway alignment. The gusty crosswind was a related factor.

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 - on ground/waterLanding - roll
Weather condition - crosswindFactor
Weather condition - gustsFactor
Compensation for wind conditions - inadequatePilot in commandCause
Proper alignment - not maintainedPilot in commandCause
On ground/water collision with objectLanding - roll
Object - fence
Nose overLanding
Terrain condition - ditch

Analysis

On final approach to the airport, the pilot was attempting a crosswind landing. The pilot said the winds changed momentarily and he reduced the crosswind correction, and then was struck by a gust of wind. He applied full rudder, continued to drift downwind, and then he applied power, but hit a boundary chain link fence. Witnesses reported that the aircraft was attempting a crosswind landing, and it appeared that the aircraft was coming in too fast and had full power. The witnesses saw the aircraft bounce, and further said that 'the pilot over corrected in his attempt to regain control of the aircraft.' An off-duty FAA operation's inspector, who was present a few minutes after the accident, reported that the winds were variable from 330 to 020 gusting to 25 knots.

Factual narrative

On February 23, 1997, at 0910 hours Pacific standard time, an Aeronca 7AC, N84486, veered off runway 6 and nosed over in a drainage canal at Flabob Airport, Rubidoux, California. The airplane sustained substantial damage. The private pilot owner/operator of the aircraft and the passenger received minor injuries. Visual meteorological conditions prevailed for the flight that originated from Carlsbad, California, airport at 0830.

The pilot reported in an interview with the Federal Aviation Administration (FAA) that "on his approach to RIR [runway] 6 he was using [crosswind] technique, winds changed momentarily, [he] reduced correction and then got hit with a large gust, applied full rudder, but drifted downwind, [he] applied power but hit a boundary chain link fence. . . ."

In his written statement the pilot said that during the approach he corrected for a left to right crosswind and experienced windshear at approximately 100 feet agl. He applied full throttle and exited the windshear, but a severe gust of wind struck the left side of the aircraft and rotated the nose of the aircraft to the right. Left rudder was applied without effect and the airplane drifted uncontrollably to the right. The pilot attempted a climb to the right, without success, and struck a fence and flipped upside down into the drainage ditch.

According to witness statements the aircraft was attempting a crosswind landing and "came in fast. . .appeared to be full power." The aircraft bounced and the pilot over corrected, attempted to regain control of the airplane, hit a chain link fence and came to rest in the drainage canal.

An off-duty FAA operations inspector from the Riverside, California, Flight Standards District Office, who arrived on scene a few minutes after the accident, reported that the winds were variable from 330 to 020 with gusts to 25 knots.

Aircraft

Registration
N84486
Reported as
Aeronca 7AC
Category
Airplane
Serial number
7AC-3186
Engine
Lycoming O-290-D, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
John J. Murphey, doing business as John J. Murphey, Inc.
Registered owner
Murphey Law Offices
Airworthiness certificate
Standard, Normal
Last inspection
Annual · October 4, 1996 · 73 hours before
Departed
CRQ · Carlsbad, CA
Destination
RIR
Airport
RIR · Flabob, runway 6, 3,200 × 50 ft, asphalt

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
60
Certificate
Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Front
Flight hours
1,200 total · 550 in this make and model · 1,200 as pilot in command · 8 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
20° at 10 knots
Visibility
60 statute miles
Lowest ceiling
None
Altimeter
30.00 inHg
Observed at
RAL, 3 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.

Other investigations on N84486 · 1

Matched to the same aircraft by N-number and date.