DEN00LA145

NTSB accident investigation · Piper PA-22-108 · Duchesne, UT · August 6, 2000

Accident · No injuriesLimited investigationFinal report
Date
August 6, 2000, 17:00 local (23:00 UTC)
Place
Duchesne, UT
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N4689ZPiper PA-22-108
Weather
Visual (VMC) · Day
Status
Completed · report March 2, 2001
Report
Approved by Office Director
FAA report
20000806010169A
Case key
49909

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 pilot's use of excessive braking on soft terrain. Factors included fuel starvation, the fuel selector valve not engaging properly, the pilot's incorrect positioning of the fuel selector valve, and the soft terrain on which the forced landing was made.

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) - nonmechanicalCruise - normal
Fluid,fuel - starvationFactor
Fuel system,selector/valve - not engagedFactor
Fuel tank selector position - incorrectPilot in commandFactor
Forced landingEmergency descent/landing
Nose overLanding - roll
Terrain condition - softFactor
Brakes(normal) - excessivePilot in commandCause

Analysis

Shortly after takeoff, the pilot switched the fuel selector from the left tank to the right tank and within a few moments the engine lost power. He switched the fuel selector back to the left tank, but could not restart the engine. He made a forced landing on a beach at an approach speed that was a 'little fast.' When he applied brakes, the airplane nosed over. The pilot said he 'may have shut the fuel off,' and later said the fuel selector handle and indicator pointer were not aligned with each other. In 1960, FAA issued A.D. 60-10-08 requiring the inspection of the fuel selector valve to assure proper alignment of the handle and pointer. According to the airplane maintenance records, A.D. 60-10-08 had been complied with. An FAA airworthiness inspector who examined the airplane said the fuel selector operated correctly.

Factual narrative

On August 6, 2000, approximately 1700 mountain daylight time, a Piper PA-22-108 (converted to a PA-20), N4689Z, was substantially damaged when it nosed over during a forced landing at Starvation Reservoir, near Duchesne, Utah. The airline transport certificated pilot, the sole occupant aboard, was not injured. Visual meteorological conditions prevailed, and no flight plan had been filed for the personal flight being conducted under Title 14 CFR Part 91. The flight originated at Duchesne minutes before the accident.

The following is based on the pilot's accident report and information he supplied during a telephone conversation. He departed Duchesne Municipal Airport, and was en route to Salt Lake City Municipal 2 Airport. After leaving the aircraft traffic pattern, he switched the fuel selector from the left tank to the right tank and within a few moments the engine lost power. He switched the fuel selector back to the left tank, but could not restart the engine. He made a forced landing on a beach at Starvation Reservoir at an approach speed that was a "little fast." When he applied brakes, the airplane nosed over. A witness at the scene stated that the pilot said, "I may have shut the fuel off." The pilot later said the fuel selector handle and indicator pointer were not aligned with each other.

According to the Piper Aircraft Corporation, the fuel selector valve handle and pointer are both installed on the fuel selector valve shaft via a key-way, and that both must reference the same detent for positive engagement in all four detent positions. As a result, FAA issued Airworthiness Directive (A.D.) 60-10-08, effective May 13, 1960, requiring the inspection of the fuel selector valve to assure proper alignment of the handle and pointer. The A.D. is repetitive every 100 hours time-in-service. According to the airplane maintenance records, all airworthiness directives, including A.D. 60-10-08, were in compliance. An FAA airworthiness inspector from the Salt Lake City Flight Standards District Office examined the airplane and found that the fuel selector operated correctly.

Both wing ribs, left engine mount, left strut, vertical stabilizer and rudder were damaged.

Aircraft

Registration
N4689Z
Reported as
Piper PA-22-108
Category
Airplane
Serial number
22-8227
Airframe hours
2,602
Engine
Lycoming O-320-A2B, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
David F. Edgerly
Airworthiness certificate
Standard, Normal
Last inspection
Annual · June 22, 2000 · 35 hours before
Departed
U69 · Duchesne, UT
Destination
U42 · Salt Lake 2, UT

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
Certificate
Airline transport
Airplane ratings
Single-engine sea, Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
15,787 total · 25 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
120° at 7 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
91 °F, dew point 37 °F
Altimeter
30.00 inHg
Observed at
VEL, 60 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.

Other investigations on N4689Z · 1

Matched to the same aircraft by N-number and date.