DEN01LA149

NTSB accident investigation · Piper PA-32RT-300 · Rock Springs, WY · August 18, 2001

Accident · No injuriesLimited investigationFinal report
Date
August 18, 2001, 07:30 local (13:30 UTC)
Place
Rock Springs, WY
Injuries
4 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N3015LPiper PA-32RT-300
Weather
Visual (VMC) · Day
Status
Completed · report July 25, 2002
Report
Approved by Office Director
Parties
Textron Lycoming, FAA FSDO
FAA report
20010818023889A
Case key
53080

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 mechanic's failure to perform an airworthiness directive, which resulted in the loss of engine oil through a partially failed oil filter converter plate gasket, and subsequent failure of a connecting rod during cruise flight. A contributing factor was the lack of suitable terrain for the ensuing 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 power(total) - mech failure/malfCruise
Maintenance,compliance with ad - not performedOther maintenance personnelCause
Lubricating system,oil gasket - failure,partialCause
Lubricating system - leakCause
Engine assembly,connecting rod - failureCause
Forced landingEmergency descent/landing
On ground/water encounter with terrain/waterEmergency landing
Terrain condition - rough/uneven
Terrain condition - none suitableFactor

Analysis

The private pilot was flying the single-engine airplane in cruise flight, when the "aircraft experienced a prop[eller] runaway and loss of oil pressure." The engine began to lose power, so the pilot established the aircraft in a glide toward a dirt road. At 700 feet agl, "a connecting rod poked through the cowling and oil covered the windshield." Due to reduced vision and the unknown condition of the roadway, the pilot elected to make a landing gear retracted landing. The airplane came to rest upright on the shoulder of the road. Examination of the engine revealed that there was no oil present in the engine. The oil filter converter plate gasket was found protruding from around the adapter plate, and a 1/4-inch section of the gasket was missing. An Airworthiness Directive (AD) was issued that addressed the oil filter converter plate gasket on engines that had been factory overhauled after April 1, 1999. The AD required the replacement of the oil filter converter plate gasket before further flight on engines with more than 50 hours time since new, time since overhaul, or time since the last replacement of the gasket or converter plate, and thereafter every 50 hours time in service since the last replacement of the gasket. Non compliance with the AD could result in the protruding or swelling of the converter plate gasket and subsequent loss of engine oil. The engine had been factory overhauled and shipped from the factory on February 18, 2000. At the time of the accident, the engine had accumulated 425 hours since the overhaul. Examination of the engine maintenance records revealed that the AD had not been previously complied with.

Factual narrative

On August 18, 2001, at 0730 mountain daylight time, a Piper PA-32RT-300 single-engine airplane, N3015L, was substantially damaged during a forced landing on a dirt road following a loss of engine power approximately 30 miles northeast of Rock Springs, Wyoming. The airplane was registered to Ten Hi Flyers , Inc., of Lakewood, Colorado and was operated by the pilot. The private pilot and his three passengers were not injured. Visual meteorological conditions prevailed for this personal flight from Steamboat Springs, Colorado, to Pinedale, Wyoming, which was operating under 14 Code of Federal Regulations Part 91. The flight departed Steamboat Springs at 0615, and no flight plan was filed.

According to the pilot's written statement, the flight was approximately 20 miles north of Rock Springs, when the "aircraft experienced a prop[eller] runaway and loss of oil pressure." The pilot elected to divert towards Rock Springs; however, the engine began to lose power. The pilot was established in a glide toward a dirt road, when at 700 feet agl, "a connecting rod poked through the cowling and oil covered the windshield." Due to reduced vision and the unknown condition of the roadway, the pilot elected to make a landing gear retracted landing. The airplane came to rest upright on the shoulder of the road. According to an aircraft mechanic who reviewed the aircraft's damage, the aircraft's firewall sustained structural damage.

The pilot reported that the airplane underwent its last annual inspection on October 25, 2000 and had accumulated 228 hours since that annual. The Lycoming IO-540-K1G5D engine was factory overhauled and shipped from the factory on February 18, 2000. According to the pilot, the engine had accumulated 425 hours since the overhaul.

According to Emergency Airworthiness Directive (AD) 2000-18-53, which was issued on September 5, 2000, any Lycoming IO-540-K1G5D engine that had been manufactured new, rebuilt, overhauled, or had the oil filter converter plate (part number LW-13904) or gasket (part number LW-13388) replaced, after April 1, 1999, had to comply with the AD. The AD required the replacement of the oil filter converter plate gasket before further flight on engines with more than 50 hours time since new, time since overhaul, or time since the last replacement of the gasket or converter plate, and thereafter every 50 hours time in service since the last replacement of the gasket. The AD was issued after the FAA received reports of certain oil filter converter plate gaskets extruding from the seat of the oil filter converter plate. The protruding or swelling of the gasket was allowing oil to leak from between the oil filter converter plate and the accessory housing. This condition, if not corrected, could result in complete loss of engine oil and subsequent seizing of the engine and possible fire.

On August 29, 2001, the NTSB investigator-in-charge (IIC) and a representative from the engine manufacturer examined the engine at Beegles Aircraft Services, Greeley, Colorado. According to the engine representative, the engine displayed a "large hole in the left side of the crankcase in the area of the #4 connecting rod and cylinder base attach point." There was no oil present in the oil reservoir. Examination of the engine accessory section revealed that the oil filter converter plate gasket was extruding out past the adapter plate. The oil filter and oil filter converter plate were removed. The oil filter converter plate gasket displayed "deterioration" and "approximately 1/4-inch" of gasket was missing.

Review of the aircraft's maintenance records by the NTSB IIC and the engine representative revealed no record that the aforementioned AD had been complied with.

Aircraft

Registration
N3015L
Reported as
Piper PA-32RT-300
Category
Airplane
Serial number
32R-7985067
Airframe hours
2,520
Engine
Lycoming IO-540-K1G5D, 300 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Ronald J. McLaughlin
Registered owner
Ten Hi Flyers, INC.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · October 25, 2000 · 228 hours before
Departed
SBS · Steamboat Sprgs, CO
Destination
PNA · Pinedale, WY

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
47
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 3, Valid Medical--w/ waivers/lim
Last flight review
June 2, 2001
Seat
Left
Flight hours
2,200 total · 100 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
280° at 15 knots
Visibility
50 statute miles
Lowest ceiling
None
Temperature
64 °F

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 N3015L · 1

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