MIA94LA138

NTSB accident investigation · Piper J3C-65 · Belleair, FL · May 13, 1994

Accident · Minor injuriesLimited investigationFinal report
Date
May 13, 1994, 12:10 local (16:10 UTC)
Place
Belleair, FL
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N114WWPiper J3C-65
Weather
Visual (VMC) · Day
Status
Completed · report November 18, 1994
Report
Approved by Office Director
FAA report
19940513010749A
Case key
37544

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

Improper maintenance inspection of the crankcase breather tube resulting in failure to detect blockage of the tube.

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.

On ground/water collision with objectLanding - roll
Engine assembly,other - blocked(partial)
Maintenance,inspection - inadequateCompany maintenance personnelCause
Engine assembly,crankcase - pressure excessive
Lubricating system,oil seal - loss,partial
Fluid,oil - loss,partial
Precautionary landing - performedPilot in command
Object - tree(s)

Analysis

The pilot observed engine oil leaking onto the windshield. He dropped the aerial advertising banner he was towing on to a golf course and then performed a precautionary landing on the golf course. During landing rollout the aircraft collided with two trees. Postcrash examination of the engine indicated the front crankshaft seal was partially dislodged and causing the oil leakage. The engine crankcase breather line was found partially blocked with oil sludge and debris. No other evidence of failure or malfunction was noted in the engine.

Factual narrative

On May 13, 1994, about 1210 eastern daylight time, a Piper J3C-65, N114WW, registered to Thomas W. Merrifield, collided with trees during a precautionary landing on a golf course near Belleair, Florida, while on a 14 CFR Part 91 banner towing flight. Visual meteorological conditions prevailed at the time and no flight plan was filed. The airplane was substantially damaged and the commercial-rated pilot sustained minor injuries. The flight originated at St. Petersburg, Florida, on May 13, 1994, about.

The pilot stated that about 15 minutes after takeoff the engine began to lose oil. He released the banner and initiated a descent to land on a golf course with the windshield covered by oil. After touchdown he observed a ditch ahead and added power to clear it. He was then unable to stop before colliding with trees.

Postcrash examination of the engine by FAA inspectors indicated the engine front crankshaft seal was partially dislodged causing the oil leakage. The engine case breather line was found partially blocked by oil sludge and debris. No other evidence of failure or malfunction was noted.

Aircraft

Registration
N114WW
Reported as
Piper J3C-65
Category
Airplane
Serial number
17908
Airframe hours
8,660
Engine
Lycoming O-320A, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Part 91
Registered owner
Thomas W. Merrifield
Airworthiness certificate
Standard, Normal
Last inspection
Annual · April 9, 1994 · 90 hours before

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
41
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Front
Flight hours
4,500 total · 3,000 in this make and model · 4,400 as pilot in command · 331 in the last 90 days · 98 in the last 30 days · 5 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
120° at 6 knots
Visibility
5 statute miles
Lowest ceiling
None
Temperature
86 °F, dew point 70 °F
Altimeter
29.00 inHg
Observed at
SPG, 15 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.