DEN89LA187

NTSB accident investigation · Cessna 172M · Ruidoso, NM · August 5, 1989

Accident · Minor injuriesLimited investigationFinal report
Date
August 5, 1989, 15:58 local (21:58 UTC)
Place
Ruidoso, NM
Injuries
3 minor
Damage
Destroyed
Phase of flight
Initial climb
Aircraft
N9183HCessna 172M
Weather
Visual (VMC) · Day
Status
Completed · report October 24, 1990
Report
Approved by Office Director
FAA report
19890805027699A
Case key
17760

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 pilot's improper use of the mixture control and carburetor heat during a takeoff in high density altitude conditions. Contributing to the accident was the high density altitude.

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) - nonmechanicalTakeoff - initial climb
Weather condition - high density altitudeFactor
Mixture - improper use ofPilot in commandCause
Carburetor heat - improper use ofPilot in commandCause
Forced landingDescent - emergency
In flight collision with objectDescent - emergency
Object - tree(s)
Terrain condition - none suitable

Analysis

N9183H had just taken off from an 8100 x 100 ft asphalt rwy where the elev is 6811 ft MSL. There was a right quartering headwind at 10 KTS and the temp was 81 deg f. the density altitude was calculated to be 9400 ft. the plt said he leaned the mixture at 2000 RPM during the runup and after takeoff the engine began to lose RPM, airspeed, and altitude. The plt said he first enriched the mixture and then leaned it out again. He then applied carb heat as the RPM had decreased to 1900. When the RPM reached 1800, the plt decided an off airport forced landing was inevitable. The airplane crashed into trees 1/4 mile south of the south end of the rwy.

Aircraft

Registration
N9183H
Reported as
Cessna 172M
Category
Airplane
Serial number
17265998
Airframe hours
4,368
Engine
Lycoming O-320-E2D, 150 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Operator
Kelley, Robert V.
Registered owner
Kelley, Robert V
Airworthiness certificate
Standard, Normal
Last inspection
Annual · February 18, 1989 · 43 hours before
Departed
SSB
Destination
SJT · San Angelo, TX

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
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
963 total · 548 in this make and model · 882 as pilot in command · 28 in the last 90 days · 10 in the last 30 days · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
280° at 10 knots
Visibility
20 statute miles
Lowest ceiling
None
Temperature
81 °F, dew point 45 °F
Altimeter
30.00 inHg
Observed at
SRR

FAA reports on this event · 1

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