CEN12FA021

NTSB accident investigation · Piper PA-28-140 · Guthrie, OK · October 16, 2011

Accident · FatalField investigationFinal report
Date
October 16, 2011, 15:38 local (20:38 UTC)
Place
Guthrie, OK
Injuries
1 fatal, 1 serious, 1 minor
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N6085WPiper PA-28-140
Defining event
Enroute-descent: Fuel exhaustion
Weather
Visual (VMC) · Day
Status
Completed · report June 14, 2012
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA Flight Standards District Office
FAA report
20111016026229A
Case key
82075

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

The pilot’s inadequate fuel planning, which resulted in a total loss of engine power due to fuel exhaustion.

Findings · 2

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Planning/preparation: fuel planningPersonnel issues › Task performance · PilotPiper PA-28-140: 18 casesAll aircraft: 719 casesProbable cause
Fluids: fuelAircraft › Fluids/misc hardware · Fluid levelPiper PA-28-140: 32 casesAll aircraft: 1,695 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

The airplane was fueled to capacity and flew for 3 hours and 15 minutes to its destination, where it was not refueled. Two days later, the airplane flew for 3 additional hours. During that flight, a passenger said that he heard the pilot say that they were low on fuel. Shortly thereafter, the engine lost power and the airplane collided with power lines and impacted a storage shed in a residential area. The airplane was equipped with two 25-gallon fuel tanks (50 gallons total, of which 48 gallons were useable). The airplane had been aloft for about 6 hours, 13 minutes. Depending on the power setting, the airplane would have burned between 38 and 52 gallons for the two flights.

Factual narrative

HISTORY OF FLIGHT On October 16, 2011, at 1538 central daylight time, a Piper PA-28-140, N6085W, collided with power lines and impacted a storage shed in a residential area of Guthrie, Oklahoma, following a total loss of engine power. The pilot was fatally injured. One passenger sustained serious injuries, and another passenger received minor injuries. The airplane was substantially damaged. The airplane was registered to and operated by the pilot under the provisions of 14 Code of Federal Regulations (CFR) Part 91 as a personal flight. Visual meteorological conditions (VMC) prevailed at the time of the accident, and a VFR (Visual Flight Rules) flight plan had been filed by the pilot while en route. The flight originated from Gaston’s Resort (K3M0), Lakeview, Arkansas, approximately 1230, and was en route to Guthrie (KGOK). On Friday, October 14, the pilot fueled the airplane to maximum fuel capacity and flew from KGOK to Norman (KOUN), Oklahoma, a straight-line distance of about 44 miles. The pilot's son and grandson boarded the airplane. They departed KOUN approximately 1245, and flew to K3MO, a fishing resort, arriving there about 1500. The pilot's other son drove to K3MO, and they stayed at the resort for two days. Because there was no fuel at K3MO, the airplane was not serviced. On the day of the accident, the brothers switched -- one flying and the other driving back to KGOK. The airplane departed K3MO about 1230 and did not land at any airport to refuel. The 11-year-old passenger, who was in the back seat, said the flight was pleasant until they were about 2 or 3 miles from KGOK and he heard his grandfather say they were low on fuel. The grandson fell asleep and was awakened by the crash. PERSONNEL (CREW) INFORMATION The 62-year-old pilot held a private pilot certificate with an airplane single-engine land rating. He also held a third class airman medical certificate, dated November 1, 2010, with the limitation, "Holder shall possess glasses for near and intermediate vision." His last flight review was dated March 21, 2011. The pilot had three logbooks: the first logbook contained entries from June 25, 1985 to August 30, 1989; the second logbook contained entries from September 23, 1989 to July 4, 2010, and the third logbook contained entries from July 18, 2010, to October 1, 2011 The third logbook indicated the pilot had accrued the following flight times (in hours): Total time, 883.8 Pilot-in-command, 835.0 Instruction received, 54.5 Day, 822.6 Night, 61.2 Cross-country, 822.6 Simulated instruments, 6.2 Piper PA-28-140, 185.7 AIRCRAFT INFORMATION N6085W, a model PA-28-140 (serial number 28-20099), was manufactured by the Piper Aircraft Corporation in 1964. It was powered by a Lycoming O-320-E2A engine (serial number L-14053-27), rated at 150 horsepower, driving a Sensenich 2-blade, all-metal, fixed-pitch propeller (model number 74DM6-0-60). According to the airplane maintenance records, the last annual and 100-hour inspections wereperformed on April 2, 2011, at a total time of 3,505.14 hours. At that time, the engine had accrued 1,708.7 hours since major overhaul. At the accident site, the tachometer read 3,553.1 hours. METEOROLOGICAL INFORMATION The following weather observations were recorded by Guthrie Municipal Airport’s (KGOK) AWOS (Automated Weather Observation System)) at 1453 and 1553, respectively: Wind, 280 degrees at 10 knots; visibility, 10 miles; sky condition, clear; temperature, 32 degrees C.; dew point 11 degrees C; altimeter, 29.90 inches of Mercury. Wind, 250 degrees at 8 knots; visibility, 10 miles; sky condition, clear; temperature 32 degrees C.; dew point, 11 degrees C.; altimeter, 29.89 inches of Mercury. WRECKAGE AND IMPACT INFORMATION The airplane was found resting against a storage shed in a nose-down, right wing low attitude. The right wing fuel tank was compromised; the left wing fuel tank was empty. The fuel selector was on the left tank, and the electric boost pump was on. The mixture control was rich, and the throttle was midrange and bent. The master and magneto switches were on. The following is a partial list of observed switch and control positions and instrument settings: Flaps – Up Trim – Full nose down Tachometer – 100 rpm - 3,553.1 Hobbs meter – 792.1 Clock – 3:38:29 (stopped)Airspeed - 0 Heading indicator – 150 degrees Altimeter – 3,600 feet Artificial Horizon – 25 degree left bank Turn Coordinator – 2x right standard rate turn Kollsman window – 30.30 in. Hg. Comm #1 – Digital Nav #1 - Digital #1 OBS – 278 degrees Comm #2 – Between 122.5 and 122.7 MHz (on) Nav #2 – 114.5 MHz #2 OBS – 251 degrees MEDICAL AND PATHOLOGICAL INFORMATION An autopsy on the pilot (#1104209) was performed by Oklahoma’s Office of the Chief Medical Investigator. Death was attributed to “multiple blunt force injuries.” Toxicology protocols were conducted by both the Federal Aviation Administration’s Civil Aerospace Medical Institute and Oklahoma’s Office of the Chief Medical Investigator. Both reports showed negative results for ethyl alcohol, carbon monoxide, cyanide, and drugs. TESTS AND RESEARCH The airplane was equipped with two 25-gallon fuel tanks (50 gallons total, of which 48 gallons were useable). Based on the pilot’s son’s report, the airplane had been aloft for approximately 6 hours, 13 minutes. According to the Piper PA-28-140 “Pilot Operating Manual,” fuel consumption would be 8.4 gallons per hour (gph), 7.3 gph, and 6.2 gph at 75, 65, and 55 per cent power, respectively, and total fuel consumption would have been 52, 45, and 38 gallons, respectively. A Bendix/King AV80R GPS (Global Positioning System) was recovered at the accident site and sent to NTSB’s Vehicle Recorder Laboratory for examination. According to the engineer’s report, the device did not contain a memory card.

Aircraft

Registration
N6085W
Reported as
Piper PA-28-140
Category
Airplane
Serial number
28-20099
Airframe hours
3,553
Engine
Lycoming O-320-E2A, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Darrell A. Smittle
Registered owner
Darrell A. Smittle
Airworthiness certificate
Standard, Utility; Standard, Normal
Last inspection
Annual · April 2, 2011 · 48 hours before
Departed
K3M0 · Lakeview, AR
Destination
KGOK · Guthrie, OK
Flight plan
VFR

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
62
Injuries
Fatal
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Last flight review
March 21, 2011
Seat
Left
Toxicology
Performed
Flight hours
884 total · 120 in this make and model · 835 as pilot in command · 31 in the last 90 days · 13 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
250° at 8 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
90 °F, dew point 52 °F
Altimeter
29.88 inHg
Observed at
KGOK, 3 nm away

Docket · 18

The files NTSB released with the investigation on May 4, 2012, on NTSB’s docket system: statements, records, photos and specialists’ reports. 14.5 MB in all.

Record of Telephone InterviewItem 1 · .PDF · 38 KBMap 1 - Over view of the accident site.Item 2 · .PDF · 351 KBMap 2 - Guthrie Airport was 2-3 miles southwest of the accident site.Item 3 · .PDF · 399 KBMap 3 - Close-up view of the accident site and the storage shed struck by N6085W.Item 4 · .PDF · 289 KBWeather Reports and RecordsItem 5 · .PDF · 75 KBPerformance ChartsItem 6 · .PDF · 143 KBToxicology Reports, Darrell A. SmittleItem 7 · .PDF · 90 KBCertification of Party RepresentativesItem 8 · .PDF · 1.7 MBNTSB Form 6120.15, Release of Aircraft WreckageItem 9 · .PDF · 38 KBPhoto 1 - Repaired powerlines and poles that were struck by N6085WItem 10 · .PDF · 1.0 MBPhoto 2 - N6085W at the accident and minor damage to the storage shedItem 11 · .PDF · 2.2 MBPhoto 3 - There was minor damage to the parked pick-up truckItem 12 · .PDF · 2.1 MBPhoto 4 - Propeller spinner exhibiting crushing damage on one side and the absenceof spiralling striationsItem 13 · .PDF · 506 KBPhoto 5 - Ascending propeller blade exhibiting faint 45-degree striations on the cambered surface of the polished aluminum alloy bladeItem 14 · .PDF · 844 KBPhoto 6 - Descending propeller blade is bent slightly aftItem 15 · .PDF · 762 KBPhoto 7 - Pilot's instrument panel with electric fuel boost pump (red switch) in the ON positionItem 16 · .PDF · 796 KBPhoto 8 - Fuel selector was positioned on left fuel tankItem 17 · .PDF · 1.2 MBPhoto 9 - Flap handle was in the retracted positionItem 18 · .PDF · 1.9 MB

FAA reports on this event · 1

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