FTW02LA226

NTSB accident investigation · Cessna 150L · Manvel, TX · August 4, 2002

Accident · Minor injuriesLimited investigationFinal report
Date
August 3, 2002, 19:00 local (Aug 4, 2002, 00:00 UTC)
Place
Manvel, TX
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Emergency descent
Aircraft
N10935Cessna 150L
Weather
Visual (VMC) · Night
Status
Completed · report May 30, 2003
Report
Approved by Office Director
Parties
FAA FSDO
FAA report
20020803028839A
Case key
55384

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 loss of engine power for an undetermined reason. A contributing factor was the lack of suitable terrain for the 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 powerEmergency descent/landing
Reason for occurrence undetermined
Forced landingDescent - emergency
Nose gear collapsedLanding - roll
Terrain condition - none suitableFactor
Terrain condition - rough/uneven

Analysis

During the cross-country flight, the pilot performed a forced landing following a loss of engine power. During the landing roll, the nose landing gear collapse in the rough terrain. Examination revealed there was fuel in both fuel tanks, and the fuel was blue in color with no visual evidence of debris or contamination. The fuel selector was found in the "ON" position. When the crankshaft was rotated, there was engine continuity to the accessory case, thumb compression on each cylinder, and operation of the magneto impulse coupling. The spark plugs exhibited moderate wear. Continuity was confirmed for the throttle and mixture cables from the cockpit to the carburetor. The carburetor bowl had impact damage. The carburetor accelerator pump operated. No debris was found on the fuel screens for the gascolator or the carburetor. The reason for the loss of engine power could not be determined.

Factual narrative

On August 3, 2002, approximately 1900 central daylight time, a Cessna 150L, single-engine airplane, N10935, sustained substantial damage during a forced landing following a loss of engine power near Manvel, Texas. The airplane was owned and operated by the pilot under Code of Federal Regulations Part 91. The private pilot received minor injuries. Visual meteorological conditions prevailed for the personal cross-country flight, and flight plan was not filed. The flight departed Wharton, Texas, approximately 1830, with a planned destination of Pearland, Texas.

On the Pilot/Operator Aircraft Accident report (NTSB Form 6120.1/2) the pilot reported that the flight was at 1,500 feet agl when the engine rpm decreased from 2,350 rpms to 600-700 rpms. Further, the pilot added that he was able to "get a little response by pushing and pulling on the throttle." During the landing roll, the nose landing gear collapsed in the rough terrain.

The FAA inspectors, who responded to the accident site, found the airplane resting upright on the Darrington Prison property. Both wing spars were bent and the firewall was buckled. There was fuel in both fuel tanks, and the fuel was blue in color with no visual evidence of debris or contamination. The fuel selector was found in the "ON" position. When the crankshaft was rotated, there was engine continuity to the accessory case, thumb compression on each cylinder, and operation of the magneto impulse coupling. The spark plugs exhibited moderate wear. Continuity was confirmed for the throttle and mixture cables from the cockpit to the carburetor. The carburetor bowl had impact damage. The accelerator pump for the carburetor operated without discrepancies. No debris was found on the fuel screens for the gascolator or the carburetor.

The aircraft was released to the owner.

Aircraft

Registration
N10935
Reported as
Cessna 150L
Category
Airplane
Serial number
15075149
Airframe hours
12,000
Engine
Continental O-200-A, 100 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Gerald R. Cavanough
Airworthiness certificate
Standard, Normal
Last inspection
Annual · March 2, 2002 · 12 hours before
Departed
5R5 · Wharton, TX
Destination
21T · Pearland, 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
58
Injuries
Minor
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Last flight review
March 15, 2001
Seat
Left
Flight hours
969 total · 35 in this make and model · 969 as pilot in command · 15 in the last 90 days · 6 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Night
Wind
190° at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
90 °F, dew point 72 °F
Altimeter
29.93 inHg
Observed at
HOU, 15 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.