LAX91LA325

NTSB accident investigation · Cessna 172N · Napa, CA · July 24, 1991

Accident · No injuriesLimited investigationFinal report
Date
July 23, 1991, 19:45 local (Jul 24, 1991, 02:45 UTC)
Place
Napa, CA
Injuries
3 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N5352DCessna 172N
Weather
Visual (VMC) · Day
Status
Completed · report May 27, 1993
Report
Approved by Office Director
FAA report
19910723029649A
Case key
27302

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 cfi's failure to initiate the go-around maneuver in a timely manner, and his failure to terminate the simulated emergency maneuver at a proper altitude. A contributing factor was the gusty surface wind.

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 engine powerGo-around (vfr)
Go-around - delayedPilot in command(cfi)Cause
Emergency procedure - simulatedPilot in command(cfi)Cause
Weather condition - gustsFactor
Proper altitude - not maintainedPilot in command(cfi)Cause
Forced landingDescent - emergency
On ground/water encounter with terrain/waterLanding - roll
Nose overLanding - roll

Analysis

The CFI planned to demonstrate to his student how to execute an emergency landing. The CFI closed the throttle and descended to less than 50 feet above ground level before he attempted to add engine power in termination of the demonstration. As the engine power was being restored, the airplane descended a few feet, contacted the ground and nosed over. Gusty surface winds existed. The CFI reported that he had not maintained a 'sufficient buffer zone of safety' during demonstration.

Aircraft

Registration
N5352D
Reported as
Cessna 172N
Category
Airplane
Serial number
17272539
Engine
Lycoming O-320-H2AD, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
Bridgeford Flying Svc.
Last inspection
Unknown · January 2, 2000
Destination
OQ9 · Sonoma, CA

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
42
Certificates
Flight instructor, Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Flight hours
2,502 total · 450 in this make and model · 1,679 as pilot in command · 32 in the last 90 days · 11 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
250° at 15 knots
Visibility
20 statute miles
Lowest ceiling
None
Temperature
64 °F

FAA reports on this event · 1

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