FTW04LA109

NTSB accident investigation · Spannagel RV-8A · Borger, TX · April 15, 2004

Accident · No injuriesLimited investigationFinal report
Date
April 15, 2004, 16:35 local (21:35 UTC)
Place
Borger, TX
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N82LSSpannagel RV-8A
Weather
Visual (VMC) · Day
Status
Completed · report July 29, 2004
Report
Approved by Office Director
Parties
Flight Standards District Office
FAA report
20040415004789A
Case key
59071

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

A partial loss of engine power as a result of inadequate clearance between the journals and bearings.

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(partial) - mech failure/malfApproach - vfr pattern - downwind
Engine assembly,connecting rod - movement restrictedCause
Engine assembly,bearing - chafedFactor
Engine assembly,crankshaft - movement restrictedCause
Engine assembly,bearing - chafedFactor
Forced landingEmergency landing after takeoff
UndershootEmergency descent/landing
Terrain condition - ground

Analysis

The homebuilt airplane landed short of Runway 21 following a loss of engine power after takeoff. The 355-hour private pilot/owner/builder reported that prior to takeoff he pulled into the run-up area and "checked all conditions....and all indications [were] positive." The takeoff was normal until he reached an altitude of 1,200 AGL, when he noticed an increase in oil temperature. The pilot leveled the airplane, and initiated a left crosswind turn, followed by a downwind turn in the traffic pattern. The oil temperature continued to increase toward the red-line mark on the gauge. When the airplane was on the downwind leg, engine power decreased and he was unable to maintain altitude. The pilot extended the flaps to 20 degrees and turned onto a short final approach for Runway 21. The airplane impacted terrain approximately 100 feet short of the landing threshold. Subsequently, the landing gear collapsed, and the airplane nosed over, slid for approximately 100 feet, and came to rest in an inverted position at the threshold of Runway 21. Continuity was established for the engine controls and fuel system, and honey-colored oil had exited the carburetor and had pooled around the engine area. The engine oil and engine oil filter were changed approximately 1-hour before the flight. The new Chevrolet V6 4.3 liter liquid cooled automotive engine had accrued a total of five hours at the time of the accident. A normal amount of engine coolant was also observed. Further examination of the engine by the pilot/owner/builder, revealed that the main bearings and connecting rod bearings were partially seized on the engine, and that the clearances between the journals and the bearings were too tight. The bearings exhibited chafing.

Factual narrative

On April 15, 2004, at 1635 central daylight time, a homebuilt Spannagel RV-8A, single-engine airplane, was substantially damaged during a forced landing following a loss of engine power at Hutchinson County Airport (BGD), near Borger, Texas. The private pilot/owner/builder, the sole occupant of the airplane, was not injured. No flight plan was filed and visual meteorological conditions prevailed for the personal flight conducted under 14 Code of Federal Regulations Part 91. The local flight was originating at the time of the accident.

In a written statement, the 355-hour pilot, 1-hour of which was in the accident aircraft, reported that prior to take off he pulled into the run-up area and "checked all conditions....and all indications [were] positive." The take off was normal until he reached an altitude of 1,200 feet above ground level (4,200 feet mean sea level), when he noticed an increase in oil temperature. The pilot leveled the airplane, and initiated a left crosswind turn, followed by a downwind turn in the traffic pattern. The oil temperature continued to increase toward the red-line mark on the gauge.

The pilot added that when the airplane was on the downwind leg, engine power decreased and he was unable to maintain altitude. The pilot extended the flaps to 20 degrees and turned onto a short final approach for Runway 21. The airplane impacted terrain approximately 100 feet short of the landing threshold. Subsequently, the landing gear collapsed, the airplane nosed over, slid for approximately 100 feet, and came to rest in an inverted position at the threshold of Runway 21.

A Federal Aviation Administration (FAA) inspector performed an on-scene examination of the airplane and engine. Structural damage was observed to the right wing, rudder, canopy, vertical stabilizer, and propeller. The fuselage was wrinkled. The inspector reported that continuity was established for the engine controls and fuel system, and honey-colored oil had exited the carburetor and had pooled around the engine area. The engine oil and engine oil filter were changed approximately 1-hour before the flight. The new Chevrolet V6 4.3 liter liquid cooled automotive engine had accrued a total of five hours at the time of the accident. A normal amount of engine coolant was also observed.

Further examination of the engine by the pilot/owner/builder, revealed that the main bearings and connecting rod bearings were partially seized on the engine, and that the clearances between the journals and the bearings were too tight. The bearings exhibited chafing.

Aircraft

Registration
N82LS
Reported as
Spannagel RV-8A
Category
Airplane, amateur-built
Serial number
83013
Airframe hours
5
Engine
Chevrolet V6, 220 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Lawrence E. Spannagel
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · March 27, 2004 · 1 hours before
Departed
BGD · Borger, TN
Airport
BGD · Huthinson County, runway 21, 3,898 × 100 ft, asphalt

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
61
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Unknown
Last flight review
November 10, 2003
Seat
Front
Flight hours
355 total · 1 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
270° at 8 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
81 °F, dew point 21 °F
Altimeter
29.93 inHg
Observed at
BGD

FAA reports on this event · 1

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