DEN84FA115

NTSB accident investigation · Cessna 172RG · Greeley, CO · March 25, 1984

Accident · Serious injuriesField investigationFinal report
Date
March 24, 1984, 21:50 local (Mar 25, 1984, 04:50 UTC)
Place
Greeley, CO
Injuries
1 serious
Damage
Destroyed
Phase of flight
Initial climb
Aircraft
N6521RCessna 172RG
Weather
Visual (VMC) · Night/dark
Status
Completed
Report
Approved by Office Director
Case key
16205

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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Analysis

The acft collided with trees and the ground during a night forced landing. The acft had made some strange sounds and started vibrating after takeoff. A glide was set up for a forced landing. Since the arpt could not be reached a landing was made on a dry river bed. Exam of the prop showed 6 3/4 inches of one blade were missing and could not be located. Failure of the blade was determined to be from a pre-existing fatigue crack. The plt said the acft is operated off of a gravel strip in new Mexico.

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.

Airframe/component/system failure/malfunctionTakeoff - initial climb
Propeller system/accessories,blade - loss,partialCause
Airspeed - not possiblePilot in commandCause
Aircraft performance,takeoff capability - inadequateCause
Climb - not possiblePilot in commandCause
Propeller system/accessories,blade - previous damageFactor
Forced landingDescent - emergency
In flight collision with objectDescent - emergency
Light condition - dark nightFactor
Object - tree(s)Cause

Aircraft

Registration
N6521R
Reported as
Cessna 172RG
Category
Airplane
Serial number
172RG0190
Airframe hours
994
Engine
Lycoming O-360-F1A6, 180 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Registered owner
Glenn E. Illa Faye Widener
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 10, 1983 · 127 hours before
Destination
TCC · Tucumcari, NM
Flight plan
VFR
Airport
GXY · Weld County, runway 9, 7,035 × 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
Certificates
Commercial, Flight instructor
Airplane ratings
Single-engine land, Multi-engine land, Single-engine sea
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
2,845 total · 410 in this make and model · 2,650 as pilot in command · 164 in the last 90 days · 96 in the last 24 hours

Weather

Conditions
Visual (VMC) · Night/dark
Wind
Calm
Visibility
5 statute miles
Lowest ceiling
None
Temperature
43 °F, dew point 34 °F
Altimeter
29.00 inHg
Observed at
FNL, 20 nm away

Other investigations on N6521R · 1

Matched to the same aircraft by N-number and date.