FTW98LA412

NTSB accident investigation · Cessna 152 · Durango, CO · September 27, 1998

Accident · No injuriesLimited investigationFinal report
Date
September 27, 1998, 17:30 local (23:30 UTC)
Place
Durango, CO
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N4568FCessna 152
Weather
Visual (VMC) · Day
Status
Completed · report March 31, 2000
Report
Approved by Office Director
FAA report
19980927034559A
Case key
44048

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

Improper maintenance by an unknown person and the subsequent throttle cable disconnect due to a castellated nut separation. Factors were the none suitable soft terrain for the forced landing, and the failure of the nose wheel landing gear during the landing roll.

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/malfunctionDescent - normal
Throttle/power lever,cable - disconnectedCause
Miscellaneous,bolt/nut/fastener/clamp/spring - separationCause
Maintenance - improperUnknownCause
Loss of engine power(partial) - nonmechanicalDescent - normal
Forced landingEmergency descent/landing
Nose overLanding - roll
Terrain condition - none suitableFactor
Terrain condition - softFactor
Landing gear,nose gear - failure,totalFactor

Analysis

The pilot experienced a partial power failure and performed a forced landing to a field. The field was wet and soft; the nose wheel failed aft during the landing roll, and the airplane nosed over. Postimpact examination of the engine revealed that the castellated nut which held the throttle cable in place had backed off and separated from the airplane. The displacement of the throttle cable permitted the engine to transition to the idle position.

Factual narrative

On September 27, 1998, approximately 1730 mountain daylight time, a Cessna 152, N4568F, was substantially damaged during a forced landing following a partial power failure near Durango, Colorado. The private pilot, the sole occupant in the airplane, was not injured. The airplane was owned/operated by Durango Air Service, Inc. under Title 14 CFR Part 91. Visual meteorological conditions prevailed for the local area personal flight which originated approximately 35 minutes before the accident.

According to the pilot, he experienced a power failure and performed a forced landing to an open field. The field was wet and soft; the nose wheel landing gear failed aft during the landing roll, and the airplane nosed over. The vertical stabilizer and left wing were bent.

Postimpact examination of the engine revealed that the castellated nut which held the throttle cable in place had backed off and separated from the airplane. The displacement of the throttle cable permitted the engine to transition to the idle position.

Aircraft

Registration
N4568F
Reported as
Cessna 152
Category
Airplane
Serial number
15282989
Airframe hours
10,154
Engine
Lycoming O-235-L2C, 125 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Durango Air Service Inc.
Airworthiness certificate
Standard, Utility
Last inspection
Annual · July 22, 1998 · 80 hours before
Departed
DRO

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
25
Certificate
Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
220 total · 131 in this make and model · 171 as pilot in command · 17 in the last 90 days · 7 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Visibility
10 statute miles
Lowest ceiling
None
Temperature
72 °F, dew point 21 °F
Altimeter
30.00 inHg
Observed at
DRO, 8 nm away

FAA reports on this event · 1

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