LAX99LA192

NTSB accident investigation · I.C.A. Brasov IS-29D2 · Tehachapi, CA · May 22, 1999

Accident · No injuriesLimited investigationFinal report
Date
May 22, 1999, 12:25 local (19:25 UTC)
Place
Tehachapi, CA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N8217AI.C.A. Brasov IS-29D2
Weather
Visual (VMC) · Day
Status
Completed · report November 22, 2000
Report
Approved by Office Director
FAA report
19990522005549A
Case key
46476

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 inability to maintain a proper glide path due to an inadvertent encounter with an area of high sink rate conditions. The mountainous/hilly nature of the terrain which limited the pilot's selection of a landing site is a 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.

In flight encounter with weatherCruise - normal
Weather condition - downdraftCause
Proper glidepath - not possiblePilot in commandCause
Forced landingEmergency descent/landing
Terrain condition - mountainous/hillyFactor
On ground/water encounter with terrain/waterLanding - roll
Terrain condition - high vegetation

Analysis

The pilot said that he spoke with other pilots before the flight to determine the soaring conditions. The pilots he spoke with reported that the lift conditions were not great but were generally satisfactory. A glider instructor pilot told him that there were areas of lift and areas of sink out there, but that there shouldn't be a problem making the airport from where he was let go from the tow plane. The pilot stated that after release from the tow plane he experienced 'a little bit of lift and then a huge sink rate and couldn't make it over the ridge' that separated him from the airport. He realized that he would not make it back to the airport and attempted to make a forced landing southeast of the airport and collided with ground obstructions during the landing roll.

Factual narrative

On May 22, 1999, at 1225 hours Pacific daylight time, an I.C.A. Brasov IS-29D2, N8217A, sustained substantial damage when it made an off-field landing in an open field 5 miles southeast of the Mountain Valley Airport, Tehachapi, California. The glider, operated by Skylark North under 14 CFR Part 91, was rented by the pilot. The commercial glider pilot, the sole occupant, was not injured. The flight originated from the Mountain Valley Airport, at 1200 the day of the accident for a local area personal flight. Visual meteorological conditions were observed and no flight plan was filed.

In a telephone interview with the Safety Board, the pilot said that he spoke with other pilots before the flight to determine the soaring conditions. The pilots he spoke with reported that the lift conditions were not great but were generally satisfactory. A glider instructor pilot told him that there were areas of lift and areas of sink out there, but that there shouldn't be a problem making the airport from where he was let go from the tow plane. The pilot stated that after release from the tow plane he experienced "a little bit of lift and then a huge sink rate and couldn't make it over the ridge" that separated him from the airport. He realized that he would not make it back to the airport and attempted to make a forced landing southeast of the airport and collided with ground obstructions during the landing roll.

Aircraft

Registration
N8217A
Reported as
I.C.A. Brasov IS-29D2
Category
Glider
Serial number
207
Airframe hours
179
Engine
unknown
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Jane Barrett, doing business as Skylark North
Registered owner
Robert J. Broadwell
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · December 22, 1998 · 11 hours before
Departed
L94

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
46
Certificates
Flight instructor, Airline transport, Commercial, Flight engineer
Airplane ratings
Single-engine sea, Multi-engine sea, Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Front
Flight hours
8,025 total · 2 in this make and model · 7,800 as pilot in command · 100 in the last 90 days · 20 in the last 30 days · 5 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
110° at 15 knots
Visibility
50 statute miles
Lowest ceiling
None
Temperature
70 °F

FAA reports on this event · 1

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