SEA92LA149

NTSB accident investigation · Cessna 172L · Delta, UT · July 11, 1992

Accident · No injuriesLimited investigationFinal report
Date
July 11, 1992, 11:19 local (17:19 UTC)
Place
Delta, UT
Injuries
4 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N9871GCessna 172L
Weather
Visual (VMC) · Day
Status
Completed · report August 31, 1993
Report
Approved by Office Director
FAA report
19920711042999A
Case key
42851

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 failure of an intake valve and the poorly executed forced landing.

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 power(partial) - mech failure/malfCruise - normal
Engine assembly,valve,intake - failure,totalFactor
Forced landingDescent - emergency
OverrunLanding - roll
Weather condition - tailwindFactor
Planned approach - poorPilot in commandCause
Object - fence
Object - other
On ground/water collision with objectLanding - roll

Analysis

During a pleasure cross country flight, the airplane began to shake and the engine RPM decreased. The pilot diverted to a nearby runway and landed downwind. After the airplane touched down, it bounced and continued to bounce the length of the runway. The airplane finally settled as it ran off the end of the runway and continued to travel through a barbed wire fence and beehive boxes before coming to rest. Post-crash inspection of the engine revealed that the number 4 intake valve was broken. Due to damage of the fracture ends, the failure mode was not determined.

Aircraft

Registration
N9871G
Reported as
Cessna 172L
Category
Airplane
Serial number
17259771
Engine
Lycoming O-320-E2D, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Carlson, Donald K.
Registered owner
Carlson, Donald K.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · January 2, 1900
Departed
U42 · Salt Lake City, UT
Destination
CDC · Cedar City, UT
Flight plan
VFR
Airport
DTA · Delta, runway 34, 6,011 × 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
17
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
92 total · 43 in this make and model · 28 as pilot in command · 9 in the last 90 days · 2 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Visibility
10 statute miles
Lowest ceiling
8,000 ft overcast

FAA reports on this event · 1

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