DEN03LA001

NTSB accident investigation · Let Blanik L-13 · Morgan, UT · October 3, 2002

Accident · Serious injuriesLimited investigationFinal report
Date
October 3, 2002, 14:00 local (20:00 UTC)
Place
Morgan, UT
Injuries
2 serious
Damage
Destroyed
Phase of flight
Landing
Aircraft
N99805Let Blanik L-13
Weather
Visual (VMC) · Day
Status
Completed · report May 13, 2003
Report
Approved by Office Director
Parties
Salt Lake City Flight Standards District Office
FAA report
20021003026709A
Case key
55827

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 inadequate inflight planning and decision which resulted in an unsuitable off-field landing site. A contributing factor was downdraft weather conditions.

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 collision with terrain/waterEmergency landing
In-flight planning/decision - inadequatePilot in commandCause
Terrain condition - berm
Object - fence
Terrain condition - roadway/highway
Object - fence
Weather condition - downdraft

Analysis

The pilot said he flew to an area 6 miles northwest of the airport, where he experienced "very little lift and lots of sinking air." He continued to the south in search of lift, and after finding none, made a decision to return to the airport and land. As his sink rate continued to increase, he decided to land in a farm field. During landing, he flew under a power line to avoid striking it, and caught the left wing tip on the top line of a barbed wire fence. The glider collided with a mound of dirt. The glider's owner said the field prior to the one the pilot landed in, was shorter in length, but had a paved parking lot. At the end of this field, was a gravel pit with dirt piled 8 to 10 feet high, and a fence separating the two fields. According to an FAA inspector, the pilot bypassed a predeveloped subdivision that included approximately 3,000 feet of paved, straight roadway. The inspector also said the pilot had about 300 acres of open land in which to choose a suitable landing area. According to the owner and the FAA inspector, the glider impacted the pile of dirt, hit the top of a fence, impacted the roadway, and traveled across the roadway and through another fence. The glider sustained damage to the horizontal stabilizer and elevator, and the leading edges of both wings. The spar was broken in the right wing, and the main keel of the fuselage was broken.

Factual narrative

On October 3, 2002, at approximately 1400 mountain daylight time, a LET Blanik L-13 glider, N99805, was destroyed during an off airfield landing near Morgan, Utah. The private pilot and his passenger were seriously injured. Morgan Valley Soaring of Morgan, Utah, was operating the aircraft under Title 14 CFR Part 91. Visual meteorological conditions prevailed for the personal local flight that originated approximately 30 minutes before the accident. No flight plan had been filed.

According to the pilot, the glider was towed to approximately 7,300 feet msl and released. After climbing to 10,500 feet, in an area 5 to 10 miles southeast of the airport, the pilot decided to try another area. He proceeded to an area 6 miles northwest of the airport, where he experienced "very little lift and lots of sinking air." He continued to the south in search of lift, and after finding none, made a decision to return to the airport and land. As his sink rate continued to increase, now greater than 1000 feet per minute, the pilot decided to land in a farm field. During landing, he flew under a power line to avoid striking it, and caught the left wing tip on the top line of a barbed wire fence. The glider collided with a mound of dirt.

The glider's owner said there was "a lot of sink in the vicinity of the airfield." He said the field prior to the one the pilot landed in, was shorter in length, but had a paved parking lot. At the end of this field, was a gravel pit with dirt piled 8 to 10 feet high, and a fence separating the two fields. According to an FAA inspector, the pilot bypassed a predeveloped subdivision that included approximately 3,000 feet of paved, straight roadway. The inspector also said the pilot had about 300 acres of open land in which to choose a suitable landing area. The owner said the pilot told him he was too high to land in the first field and would have had to circle. The pilot also told him he hit severe sink about halfway over the first field. According to the owner and the FAA inspector, the glider impacted the pile of dirt about 1 foot from the top of the pile, hit the top of a fence while going under some power lines, impacted the roadway, and traveled across the roadway and through another fence. The glider came to rest approximately 3/4 of a mile from the end of the runway.

The glider sustained damage to the horizontal stabilizer and elevator, and the leading edges of both wings. The spar was broken in the right wing, and the main keel of the fuselage was broken.

Aircraft

Registration
N99805
Reported as
Let Blanik L-13
Category
Glider
Serial number
026509
Airframe hours
510
Engine
Damage
Destroyed
Flight
Personal · Part 91
Operator
Morgan Valley Soaring, doing business as Mountain Valley Soaring
Registered owner
J Bird Enterprises LLC
Airworthiness certificate
Standard, Normal
Last inspection
Annual · July 20, 2002 · 16 hours before
Departed
42U · Morgan, UT

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
Serious
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--no waivers/lim.
Last flight review
October 31, 2001
Seat
Front
Flight hours
710 total

Weather

Conditions
Visual (VMC) · Day
Wind
290° at 9 knots, gusting 14
Visibility
7 statute miles
Lowest ceiling
None
Temperature
52 °F, dew point 28 °F
Altimeter
29.95 inHg
Observed at
HIF, 4 nm away

FAA reports on this event · 1

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

Other investigations on N99805 · 1

Matched to the same aircraft by N-number and date.