WPR09LA021

NTSB accident investigation · Cessna 172A · Coolidge, AZ · October 23, 2008

Accident · Minor injuriesLimited investigationFinal report
Date
October 23, 2008, 14:15 local (21:15 UTC)
Place
Coolidge, AZ
Injuries
2 minor
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N7822TCessna 172A
Defining event
Initial climb: Fuel contamination
Weather
Visual (VMC) · Day
Status
Completed · report September 10, 2009
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration
FAA report
20081023851999A
Case key
69336

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 NTSB’s determination of the probable cause, and any contributing factors.

A total loss of engine power due to water contamination of the fuel system. Contributing to the accident was the pilot's inadequate preflight inspection.

Findings · 3

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings.

Analysis

The airplane experienced a total loss of engine power during initial climb at 300 feet above ground level. The pilot attempted to restart the engine to no avail, reversed course, and descended into the ground short of the departure runway. The pilot held a Federal Aviation Administration airframe and powerplant mechanic certificate, and he owned and maintained the airplane. During the subsequent examination of the airplane, water was found in the fuel strainer and carburetor. Also, several maintenance-related discrepancies were observed, including frayed electrical cords in the cockpit, missing placards, a finger-tight fuel line, and hornets' nests in the empennage and the horizontal stabilizer.

Factual narrative

The factual narrative390 words

On October 23, 2008, about 1415 mountain standard time, a Cessna 172A, N7822T, experienced a total loss of engine power during initial climb from the Sarita Airport, located about 4 miles southeast of Coolidge, Arizona. The pilot reversed course and, during a forced landing, the airplane impacted the side of a ditch short of the runway. The commercial certificated pilot and passenger received minor injuries, and the airplane was substantially damaged. The pilot owned, operated, and maintained the airplane. Visual meteorological conditions prevailed, and no flight plan was filed. The flight was performed under the provisions of 14 Code of Federal Regulations Part 91, and it was originating at the time of the accident. The pilot reported to the National Transportation Safety Board investigator that no mechanical problems or airplane anomalies were observed during his preflight inspection. Also, the engine operated normally during the pretakeoff run-up. The accident occurred following takeoff from runway 17 at the uncontrolled airport. Upon climbing about 300 feet above ground level, the engine suddenly lost all power. The event was not precipitated by any unusual vibration, backfiring or missing, and the propeller started windmilling. There were at least 10 gallons of fuel in each wing tank. The pilot reported to the Safety Board investigator that he immediately repositioned the fuel selector to draw fuel from the opposite wing tank and reversed his direction of flight. However, there was insufficient altitude to return to the airport. Engine power was not restored following his repositioning of the fuel selector. During the impact sequence a wing broke, the windshield cracked, the firewall buckled, and cabin floor bulkheads bent. The pilot stated that he held a Federal Aviation Administration (FAA) airframe and powerplant mechanic certificate. The airplane was equipped with a Franklyn engine, which he had installed. The pilot stated that he had performed the last annual inspection of his airplane, and he was responsible for its maintenance. A FAA inspector from the Scottsdale Flight Standards District Office subsequently examined the airplane. The inspector reported to the Safety Board investigator finding "copious amounts of water in the fuel strainer, and evidence of water in the carburetor." The inspector also reported, in part, observing other discrepancies including frayed electrical cords in the cockpit, missing placards, a finger tight fuel line, and hornets' nests in the empennage and the horizontal stabilizer.

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident.

Aircraft

Registration
N7822T
Reported as
Cessna 172A
Category
Airplane
Serial number
47422
Airframe hours
2,907
Engine
Franklyn 6A350C1, 220 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · January 8, 2008 · 60 hours before
Departed
37AZ · Coolidge, AZ
Destination
CGZ · Casa Grande, AZ
Airport
37AZ · Sarita, runway 17, 2,800 × 80 ft, dirt

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
54
Injuries
Minor
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Last flight review
October 31, 2007
Seat
Left
Flight hours
2,088 total · 1,800 in this make and model · 1,900 as pilot in command · 8 in the last 90 days · 6 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
None
Temperature
84 °F, dew point 23 °F
Altimeter
29.97 inHg
Observed at
CGZ, 13 nm away

Docket · 3

The files NTSB released with the investigation on July 22, 2009, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.4 MB in all.

FAA reports on this event · 1

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