FTW83LA336

NTSB accident investigation · Cessna 172 · Rutheron, NM · July 17, 1983

Accident · Minor injuriesLimited investigationFinal report
Date
July 17, 1983, 08:15 local (14:15 UTC)
Place
Rutheron, NM
Injuries
1 minor, 1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N8198BCessna 172
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19830717033159A
Case key
20976

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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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 - in flightManeuvering
Weather condition - high density altitudeFactor
Altitude - not maintainedPilot in commandCause
Clearance - not maintainedPilot in commandCause
Ignition system,spark plug - contaminationFactor

Analysis

The acft collided with the ground inadvertantly after dropping emergency drilling equipment at a drilling site. The plt was making another pass to check on the drop when the acft started to descend. In spite of power application the acft descended into an area of trees and poles. The engine was still running after impact and was secured by the plt. The site altitude was 7500 ft. post accident investigation revealed black and gray soot on the spark plugs which is 'indicative of a rich mixture.' The plt had approached at 70 KTS IAS with 10-20 degrees of flaps.

Aircraft

Registration
N8198B
Reported as
Cessna 172
Category
Airplane
Serial number
29998
Airframe hours
3,195
Engine
Continental O-300-A, 145 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Gary T. Nepon
Airworthiness certificate
Standard, Utility
Last inspection
Annual · June 11, 1982 · 77 hours before
Departed
98V · El Vado, NM
Destination
NM31 · Edgewood, NM

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
34
Certificate
Private
Airplane ratings
Multi-engine land, Single-engine land
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
718 total · 489 in this make and model · 591 as pilot in command · 20 in the last 90 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Visibility
50 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.