LAX94LA060

NTSB accident investigation · Albrecht Polywagon · Vacaville, CA · November 26, 1993

Accident · Serious injuriesLimited investigationFinal report
Date
November 26, 1993, 10:00 local (18:00 UTC)
Place
Vacaville, CA
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N320PWAlbrecht Polywagon
Weather
Visual (VMC) · Day
Status
Completed · report September 13, 1994
Report
Approved by Office Director
FAA report
19931126044609A
Case key
28610

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 pilot's failure to maintain control of the aircraft during a go-around. Factors in the accident were the wind shear conditions and the pilot's failure to adequately balance the fuel load during the flight.

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 - windshearFactor
Fuel supply - inattentivePilot in commandFactor
Aircraft control - not maintainedPilot in commandCause
In flight collision with objectGo-around (vfr)
Object - tree(s)
In flight collision with terrain/waterDescent - uncontrolled

Analysis

An FAA inspector who witnessed the accident said the aircraft was on a go-around near the runway's midpoint when the left wing suddenly dropped. The aircraft turned left, collided with trees bordering the airport, and cartwheeled into a field. He reported that the winds were from the northwest at 12 knots with gusts to 20 knots. He stated that trees line the runway which can create wind shear conditions in cross wind situations. The pilot said that he flared high and bounced on the runway during the landing approach, and initiated a go-around. During the go-around, the pilot said he could not control the aircraft and the left wing dropped. The aircraft then turned and collided with trees. The pilot said that a fuel imbalance may have contributed to the loss of lateral control. FAA inspectors said that about 18 months ago the pilot crashed the aircraft during its first test flight. The pilot rebuilt the aircraft and this was the first flight.

Factual narrative

On November 26, 1993, at 1000 Pacific standard time, an experimental homebuilt Albrecht Polywagon aircraft, N320PW, collided with trees and the ground during an attempted go-around at the Nutree Airport, Vacaville, California. The aircraft, owned and operated by Robert T. Albrecht of Suisun, California, was on its initial test flight following a complete rebuilding. Visual meteorological conditions prevailed at the time and no flight plan was filed for the operation. The aircraft was destroyed in the collision sequence. The certificated commercial pilot, the sole occupant, sustained serious injuries. The flight originated at Vacaville, California, on the day of the mishap at 0945 hours as a local area test flight.

A Federal Aviation Administration (FAA) operations inspector from the Sacramento, California, Flight Standards District Office, witnessed the accident. He reported observing the aircraft on a go-around near the midpoint of runway 20 when the left wing suddenly dropped. The aircraft turned to the left, collided with trees bordering the airport, and cartwheeled into a field. The inspector reported that the winds were from the northwest at 12 knots with higher gusts in the 15-to-20 knot range. He stated that trees line the runway which, in his experience, can create wind shear conditions in crosswind situations.

On November 30th, the FAA inspector was able to interview the pilot in the hospital. The pilot reported that he flared high and bounced on the runway during the landing approach, and he subsequently initiated a go-around. The pilot said he thought he struck the tail, damaging the rudder hinges. During the go- round, the pilot said he could not control the aircraft and the left wing dropped. The aircraft then turned and collided with trees. The pilot also speculated that, since he had flown about one-half hour on the left fuel tank, a possible fuel imbalance may have contributed to the inability to control the aircraft.

The responding FAA inspector reported that about 18 months ago the pilot crashed the aircraft during its first test flight following initial construction. The pilot rebuilt the aircraft and obtained FAA approval for a new test flight. Airworthiness inspectors from the Sacramento FAA Flight Standards District Office examined the empennage and its associated control system for damage. According to the inspector, no evidence was observed to indicate that the tail of the aircraft struck the runway during the initial landing bounce.

Aircraft

Registration
N320PW
Reported as
Albrecht Polywagon
Category
Airplane, amateur-built
Serial number
13
Airframe hours
1
Engine
Lycoming O-320-E2A, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Part 91
Operator
Robert T. Albrecht
Registered owner
Robert T. Albrecht
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · November 23, 1993 · 1 hours before
Departed
O45
Airport
O45 · Vacaville Nut Tree, runway 2, 3,800 × 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
73
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
14,039 total · 2 in this make and model · 9,400 as pilot in command · 7 in the last 90 days · 4 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
320° at 12 knots, gusting 20
Visibility
15 statute miles
Lowest ceiling
None
Temperature
70 °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.