LAX02LA160

NTSB accident investigation · Mulligan RV4 · Santa Ynez, CA · May 12, 2002

Accident · No injuriesLimited investigationFinal report
Date
May 12, 2002, 16:15 local (23:15 UTC)
Place
Santa Ynez, CA
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N6579BMulligan RV4
Weather
Visual (VMC) · Day
Status
Completed · report September 30, 2003
Report
Approved by Office Director
Parties
FAA
FAA report
20020512008289A
Case key
54701

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

The failure of the pilot to maintain sufficient airspeed during the attempted go-around resulting in a stall/mush. The gusting winds, recent purchase of airplane, and premature raising of the flaps were factors.

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 flightGo-around (vfr)
Weather condition - gustsFactor
Lack of experiencePilot in commandFactor
Go-around - attemptedPilot in command
Raising of flaps - prematurePilot in commandFactor
Airspeed - not maintainedPilot in commandCause
Stall/mush - inadvertentPilot in commandCause
On ground/water encounter with terrain/waterLanding
Terrain condition - ground

Analysis

The amateur-built airplane collided with the ground during an attempted go-around from runway 26. The pilot reported he was on final approach when a gust of wind caused the airplane to balloon up. He elected to go-around and added full power, then retracted the flaps. During this time, the airplane was drifting off the left side of the runway. The pilot stated that the airplane "apparently stalled" and settled to the ground. The left wing contacted the ground, followed by the airplane's nose. He estimated that the winds were from 260 degrees at 10 mph, with gusts from 15 to 20 mph. The pilot stated he had recently purchased the airplane.

Factual narrative

On May 12, 2002, about 1615 Pacific daylight time, an amateur-built Mulligan RV4 airplane, N6579B, collided with the ground during an attempted go-around from runway 26 at the Santa Ynez, California, airport. The airplane was owned and operated by the pilot under the provisions of 14 CFR Part 91. The private pilot and sole passenger were not injured; the airplane sustained substantial damage. The personal local flight departed Santa Ynez airport about 1545. Day visual meteorological conditions prevailed and no flight plan had been filed.

The accident was initially reported by the Santa Barbara County Fire Department, which has a station close to the Santa Ynez airport. The captain on duty at the time of the event stated that they observed the accident airplane approach runway 26 "flying nearly sideways." The firefighters at the station then lost sight of the airplane as it descended from their view. The station responded to the reported accident and secured the scene from fire ignition danger. The captain reported that the fuel tanks contained "lots of fuel." At the time of the accident he estimated that the winds were from the west about 10 mph. The captain noted that the "entire airplane" including the wings, engine compartment, firewall, and tail surfaces sustained damage.

The pilot was interviewed by telephone on May 12, 2002. He reported that he had recently purchased the airplane. He was on final approach to runway 26 when a gust of wind caused the airplane to balloon up. He elected to go-around and added full power, then retracted the flaps. During this time, the airplane was drifting off the left side of the runway. The pilot stated that for "undetermined reasons" the airplane settled to the ground. The left wing contacted the ground, followed by the airplane's nose. He estimated that the winds were from 260 degrees at 10 mph, with gusts to 15 to 20 mph. The pilot said he is not aware of any mechanical problems with the airplane before the accident sequence.

In a written statement received May 22, 2002, the pilot stated a gust lifted the aircraft after the tailwheel had touched down. Full throttle was applied and the aircraft proceeded slowly without gaining speed in level flight at about 25 feet agl. The speed did not increase so the pilot raised the flaps; however, the speed did not increase. The airplane was in level flight, just above ground level, with full throttle when it "apparently stalled."

Aircraft

Registration
N6579B
Reported as
Mulligan RV4
Category
Airplane, amateur-built
Airframe hours
360
Engine
Lycoming O-320-E3D, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Howard R. Harvey
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · August 5, 2001 · 20 hours before
Departed
KIZA · Santa Ynez, CA
Airport
IZA · Santa Ynez, runway 26, 2,804 × 75 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
45
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--no waivers/lim.
Last flight review
May 4, 2002
Seat
Front
Flight hours
254 total · 16 in this make and model · 189 as pilot in command · 26 in the last 90 days · 15 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
250° at 9 knots
Visibility
8 statute miles
Lowest ceiling
100 ft overcast
Temperature
66 °F, dew point 52 °F
Altimeter
30.10 inHg
Observed at
KLPC, 20 nm away

Docket · 3

The files NTSB released with the investigation on July 22, 2003, on NTSB’s docket system: statements, records, photos and specialists’ reports. 592 KB in all.

FAA reports on this event · 1

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