LAX06CA079

NTSB accident investigation · Cessna 152 · Rancho Murieta, CA · January 4, 2006

Accident · No injuriesData collectionFinal report
Date
January 4, 2006, 09:50 local (17:50 UTC)
Place
Rancho Murieta, CA
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N49391Cessna 152
Weather
Visual (VMC) · Day
Status
Completed · report April 25, 2006
Report
Approved by Office Director
Parties
Federal Aviation Administration
FAA report
20060104000219A
Case key
63038

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

fuel contamination (water) due to the inadequate preflight by both pilots, which failed to detect the residual water contamination in fuel system. A factor in the accident was the soft terrain condition at the forced landing site.

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(total) - nonmechanicalGo-around (vfr)
Aircraft preflight - inadequateFlightcrewCause
Fluid,fuel - contamination,waterCause
Forced landingEmergency descent/landing
On ground/water encounter with terrain/waterEmergency landing
Terrain condition - soft
Nose overEmergency landing
Terrain condition - softFactor

Analysis

The airplane nosed over during a forced landing in a muddy field after a loss of engine power. The instructor stated they were completing a flight review for the pilot at the time of the accident. After the airplane was fueled the instructor sumped the tanks and found water in the right wing. The pilot told the instructor that during the preflight he also found water in the sump. The instructor sumped the tanks 3 or 4 times until there was no water in the samples. Both pilots were then confident there was no more water in the fuel tanks and they proceeded with the flight. After a simulated engine failure the pilot applied full throttle to go around. About 400 feet mean sea level on climb out, the engine lost power and the instructor took the controls to make an emergency landing. A soft muddy field was the only place available that the airplane could glide to and the instructor performed a soft field landing, but the nose gear dug into the ground and the airplane nosed over. An examination of the engine and fuel system was conducted after the accident. Water was found in the gascolator and carburetor bowl. A fuel supply was plumbed into the wing root fuel line and the engine was started on the first attempt. The engine was stopped and started again with no anomalies found.

Factual narrative

On January 4, 2005, about 0950 Pacific standard time, a Cessna 152, N49391, lost engine power and nosed over on landing near Rancho Murieta, California. Sky Walk, Inc., was operating the airplane under the provisions of 14 CFR Part 91. The certified flight instructor (CFI) and the pilot undergoing instruction (PUI) were not injured; the airplane sustained substantial damage. The instructional flight departed Sacramento, California, about 0915, with a planned destination of Rancho Murieta. Visual meteorological conditions prevailed, and no flight plan had been filed.

In a written statement to the National Transportation Safety Board the CFI stated they were completing a flight review for the PUI at the time of the accident. Both pilots taxied to the fuel pumps to top off the airplane's fuel tanks. After they fueled the CFI sumped the tanks and found water in the right wing. The PUI told her during the preflight he found water in the sump also. She sumped the tanks 3-4 times until there was no water. Both pilots were confident there was no more water in the fuel tanks and they proceeded with the flight. After a simulated engine failure the PUI applied full throttle to go around. On climb out, about 400 feet mean sea level (msl), the airplane lost power and the CFI took the controls to make an emergency landing. She chose a soft muddy field next to the runway to perform a soft field landing; however, the nose gear dug into the ground and the airplane nosed over. The CFI and PUI exited the airplane and later returned to secure it after they saw no danger of the airplane catching fire.

With the assistance of a representative from the engine manufacturer a post accident engine examination was conducted. He found water in the gascolator and carburetor. He added fuel to the wing to fuselage fuel line and ran the engine. There were no anomalies noted. The engine was stopped and started again with no anomalies noted.

Aircraft

Registration
N49391
Reported as
Cessna 152
Category
Airplane
Serial number
15283452
Airframe hours
6,285.1
Engine
Lycoming O-235-L2C, 110 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Registered owner
Sky Walk, Inc.
Airworthiness certificate
Standard, Utility; Standard, Normal
Last inspection
100 hour · November 1, 2005
Departed
SAC · Sacramento, CA
Destination
RIU · Rancho Murieta, CA
Airport
RIU · Rancho Murieta

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 · 2

As NTSB recorded them. NTSB leaves out names.

Role
Flight instructor
Age
25
Injuries
Minor
Certificates
Commercial, Flight instructor
Airplane ratings
Single-engine land, Multi-engine land, Single-engine sea
Instrument ratings
Airplane
Medical
Class 1
Last flight review
April 1, 2005
Seat
Right
Flight hours
879 total · 266 in this make and model · 669 as pilot in command · 88 in the last 90 days · 20 in the last 30 days · 2 in the last 24 hours
Role
Student pilot
Age
36
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3
Last flight review
April 1, 2005
Seat
Right
Flight hours
129 total · 50 in this make and model · 48 as pilot in command · 0 in the last 90 days · 0 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
None
Temperature
50 °F, dew point 46 °F
Altimeter
30.38 inHg
Observed at
KSAC

FAA reports on this event · 1

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