LAX96LA283

NTSB accident investigation · Cessna 172 · Boulder City, NV · July 21, 1996

Accident · No injuriesLimited investigationFinal report
Date
July 21, 1996, 09:10 local (16:10 UTC)
Place
Boulder City, NV
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N6389DCessna 172
Weather
Visual (VMC) · Day
Status
Completed · report December 16, 1996
Report
Approved by Office Director
FAA report
19960721018979A
Case key
29518

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

a loss of directional control due to the student pilot's inadequate compensation for wind conditions and improper remedial action. Factors in the accident were crosswinds, inadvertent brake application, and failure to use the ailerons.

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 - roll
Weather condition - crosswindFactor
Directional control - not maintainedPilot in commandCause
Object - runway light
Compensation for wind conditions - inadequatePilot in commandCause
Brakes(normal) - inadvertent usePilot in commandFactor
Remedial action - improperPilot in commandCause
Aileron - not usedPilot in commandFactor
Nose overLanding - roll
Terrain condition - soft

Analysis

The student pilot inadvertently applied the right brake while trying to correct for a right crosswind on runway 27L. The airplane's wheel locked up and the airplane skidded off the left side of the runway. The pilot did not use the ailerons to help maintain directional control. The airplane nosed over in soft soil damaging the vertical stabilizer. The winds at the airport were reported by a local fixed-base operation to be 170 degrees at 5 knots.

Factual narrative

On July 21, 1996, at 0910 hours Pacific daylight time, a Cessna 172, N6389D, nosed over after an on ground loss of control during landing on runway 27L at the Boulder City Municipal Airport, Boulder City, Nevada. The airplane was substantially damaged and the student pilot was not injured. The airplane was being operated as an instructional flight by Corporate Flight International, Las Vegas, Nevada. The flight originated in Las Vegas. Visual meteorological conditions prevailed at the time.

The student pilot indicated he was doing touch-and-go landings at the Boulder City Airport. On his seventh landing, a gust of wind from the right blew the airplane to the left. The pilot applied right pedal to correct the drift and inadvertently applied the brake, locking the wheel. The airplane skidded off the left side of the runway, struck a runway light, and nosed over in soft soil damaging the vertical stabilizer.

The closest official weather observation station is located 16 nautical miles northwest of the accident site in Las Vegas. At 0856 hours, a record surface observation was reporting in part, winds from 340 degrees at 3 knots. The winds at the airport after the accident were reported by a local fixed-base operation to be 170 degrees at 5 knots. Runway 27L is 4,800 feet long by 75 feet wide.

The FAA Flight Training Handbook, Advisory Circular 61-21A concerning crosswind landings states, "Special attention must be given to maintaining directional control by use of rudder, or nose wheel steering, while keeping the upwind wing from rising by use of aileron."

Aircraft

Registration
N6389D
Reported as
Cessna 172
Category
Airplane
Serial number
17272775
Airframe hours
3,774
Engine
Lycoming O-320-H2AD, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Registered owner
Corporate Flight International
Airworthiness certificate
Standard, Normal
Last inspection
Continuous airworthiness · July 15, 1996 · 18 hours before
Departed
LAS · Las Vegas, NV
Destination
61B
Airport
61B · Boulder City Municipal, runway 27L, 4,800 × 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
39
Certificate
Student
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
64 total · 49 in this make and model · 11 as pilot in command · 51 in the last 90 days · 12 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
340° at 3 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
93 °F, dew point 41 °F
Altimeter
29.00 inHg
Observed at
LAS, 16 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.