LAX02LA109

NTSB accident investigation · Trenti RV-4 · Jacumba, CA · March 15, 2002

Accident · FatalLimited investigationFinal report
Date
March 15, 2002, 13:40 local (21:40 UTC)
Place
Jacumba, CA
Injuries
1 fatal
Damage
Destroyed
Phase of flight
Landing
Aircraft
N491TTrenti RV-4
Weather
Visual (VMC) · Day
Status
Completed · report September 29, 2004
Report
Approved by Office Director
Parties
Federal Aviation Administration
FAA report
20020315003499A
Case key
54360

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

in-flight loss of control for undetermined reasons.

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 flightLanding
Reason for occurrence undeterminedCause
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - ground

Analysis

The experimental airplane collided with terrain during an attempted landing. Witnesses reported seeing the airplane at a low altitude, flying slowly toward the airport. The airplane made a sharp right turn, and, about 20 feet above ground level, the right wing dropped. The airplane continued in the turn until the right wing contacted ground. The airplane cartwheeled along the terrain, and became engulfed in flames shortly after coming to rest. Examination of the wreckage by an FAA inspector revealed no apparent mechanical anomalies.

Factual narrative

History of flight

On March 15, 2002, about 1340 Pacific standard time, an amateur-built experimental Trenti RV-4, N491T, collided with terrain during an attempted landing at the Jacumba Airport, Jacumba, California. The pilot/owner was operating the airplane under the provisions of 14 CFR Part 91. The private pilot, the sole occupant, sustained fatal injuries; the airplane was destroyed. The local personal flight departed Gillespie Field Airport, El Cajon, California, at 1323, with a planned destination of Jacumba. Visual meteorological conditions prevailed, and a flight plan had not been filed.

The Federal Aviation Administration (FAA) inspector interviewed two witnesses to the accident. One witness reported seeing the airplane at a low altitude, flying just above the surrounding utility poles. She noted that the engine sounded different, not what she was accustomed to hearing an airplane engine sounding like. The other witness saw the airplane flying toward the airport in a southeast direction. He observed the airplane moving slowly, at a low altitude, and began a sharp right turn. About 20 feet above ground level, the right wing dropped and the airplane continued in the right turn until the right wing contacted the ground. The airplane cartwheeled along the terrain, and shortly after coming to rest, became engulfed in flames. He noted that he did not hear any abnormal engine sounds.

The FAA inspector also interviewed a deputy sheriff, who had seen the pilot landing the experimental airplane several times at Jacumba. He stated that the pilot normally made a high approach heading in an easterly direction, where he flies over his house and uses it as a landmark. The house is located northeast of the airport, about 1/4 to 1/3 mile from the runway.

Personnel information

A review of FAA airman records revealed that the pilot held a private pilot certificate with an airplane single engine land rating. He was issued a third-class medical certificate on May 08, 2001, with a limitation to wear corrective lenses for near and distant vision. According to the last medical certificate application, the pilot reported having accumulated a total of 1,690 hours of flight time. The FAA inspector reported that the pilot had accumulated 790 hours in the make and model. The pilot's logbook was not recovered during the investigation

Meteorological information

An aviation routine weather report (METAR) generated by an Automated Surface Observation System (ASOS) in Campo, California (located 15 nautical miles west from the accident site), indicated that about the time of the accident winds were 220 degrees at 13 knots gusting to 18 knots.

Wreckage and impact information

The FAA inspector reported that the wreckage was about 150 feet north of runway 25. He noted that the right wing tank burned, but the left wing tank remained intact.

Tests and research

The FAA inspector examined the wreckage at the accident site. He reported that the airplane had a Textron Lycoming O-320-E2A engine, serial number L-16988-27A, installed. Manual rotation of the crankshaft produced thumb compression of the cylinders, as well as valve train and accessory gear continuity of the engine. The spark plug electrodes and ignition leads were in good condition.

Aircraft

Registration
N491T
Reported as
Trenti RV-4
Category
Airplane, amateur-built
Serial number
891
Airframe hours
791
Engine
Lycoming O-320, 150 horsepower, reciprocating
Damage
Destroyed
Fire
On-Ground
Flight
Personal · Part 91
Registered owner
Mario F. Trenti
Airworthiness certificate
Special, Experimental (Special)
Departed
SEE · El Cajon, CA
Destination
L78 · Jacumba, CA
Airport
L78 · Jacumba Airport, runway 25, 2,508 × 100 ft, gravel

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
75
Injuries
Fatal
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Center
Toxicology
Performed
Flight hours
1,690 total · 790 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
230° at 18 knots, gusting 22
Visibility
10 statute miles
Lowest ceiling
None
Temperature
55 °F, dew point 18 °F
Altimeter
29.92 inHg
Observed at
CZZ, 26 nm away

Docket · 2

The files NTSB released with the investigation on July 16, 2004, on NTSB’s docket system: statements, records, photos and specialists’ reports. 121 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.