LAX99LA060

NTSB accident investigation · Aegerter, Simon Velocity 173E-RG · San Diego, CA · December 29, 1998

Accident · No injuriesLimited investigationFinal report
Date
December 29, 1998, 15:47 local (23:47 UTC)
Place
San Diego, CA
Injuries
3 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N466MFAegerter, Simon Velocity 173E-RG
Weather
Visual (VMC) · Day
Status
Completed · report April 20, 2000
Report
Approved by Office Director
FAA report
19981229044079A
Case key
45527

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 modification to the control systems, which resulted in a restricted elevator control.

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
Flt control syst,yoke/control stick - undertorquedCause
Flight control,elevator - blocked(partial)Factor
Maintenance,modification - inadequateOwner/pilot mechanicCause
Elevator - restrictedFactor
On ground/water collision with objectLanding
Object - aircraft parked/standing

Analysis

The pilot stated he had experienced insufficient pitch control on landing at Tucson, Arizona, prior to the accident. He reported that he 'found play in the elevator control,' and was advised over the telephone by Velocity Inc. to add washers or spacers to the rear of the torque tube to remove the play. With the aid of a local pilot in Tucson, he added the washers and spacers to the rear of the torque tube. The pilot further stated that upon attempting to flare at Montgomery Field, 'the nose would not come up.' The aircraft bounced, veered off the runway, skidded across a grass area, and collided tail first with a parked Cessna 340. According to the pilot, on January 2, 1999, builders from Velocity Inc. inspected the airplane, and found that 'the front bearing of the aileron torque tube had come loose, thus preventing a full elevator down deflection.'

Factual narrative

On December 29, 1998, at 1547 hours Pacific standard time, a Velocity 173E-RG, N466MF, veered off runway 28L on landing at Montgomery Field, San Diego, California, and collided with a parked Cessna 340, N6241X. The aircraft and the parked and unoccupied Cessna 340 sustained substantial damage. The private pilot and his two passengers were not injured. Visual meteorological conditions prevailed for the personal flight from Ryan Field in Tucson, Arizona, to Montgomery Field. This was the last leg of a cross-country flight, which originated the day before in Tampa, Florida. No flight plan was filed.

The pilot stated that he had experienced insufficient pitch control on landing at Tucson prior to the accident. He reported that he "found play in the elevator control," and was advised over the telephone by the aircraft designer, Velocity Inc., to add washers or spacers to the rear of the torque tube to remove the play. With the aid of a local pilot in Tucson, he added the washers and spacers to the rear of the torque tube.

The pilot further stated that upon attempting to flare, "the nose would not come up." The aircraft bounced, veered off the runway, skidded across a grass area, and collided tail first with the parked Cessna 340.

According to the pilot, "on January 2, 1999, several Velocity builders inspected the airplane and found that the front bearing of the aileron torque tube had come loose, thus preventing a full elevator down deflection."

Aircraft

Registration
N466MF
Reported as
Aegerter, Simon Velocity 173E-RG (VELOCITY 1)
Category
Airplane, amateur-built
Serial number
DMO-326
Airframe hours
70
Engine
Franklin 6A-350C1L, 210 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Simon Aegerter
Registered owner
Sabina Aegerter
Airworthiness certificate
Special, Experimental (Special)
Departed
RYN · Tucson, AZ
Destination
MYF
Airport
MYF · Montgomery Field, runway 28L, 3,399 × 60 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
Left
Flight hours
398 total · 75 in this make and model · 331 as pilot in command · 42 in the last 90 days · 35 in the last 30 days · 6 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
360° at 5 knots
Visibility
6 statute miles
Lowest ceiling
None
Temperature
64 °F, dew point 43 °F
Altimeter
29.00 inHg
Observed at
MYF

FAA reports on this event · 1

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