CHI96LA250

NTSB accident investigation · Poppenhagen PUD Knocker Special · Grafton, ND · July 19, 1996

Accident · Minor injuriesLimited investigationFinal report
Date
July 19, 1996, 11:15 local (16:15 UTC)
Place
Grafton, ND
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N380BPPoppenhagen PUD Knocker Special
Weather
Visual (VMC) · Day
Status
Completed · report September 19, 1996
Report
Approved by Office Director
FAA report
19960719018879A
Case key
10320

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 inadequate fuel system design by the builder which led to fuel starvation.

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) - nonmechanicalTakeoff - initial climb
Fuel system - inadequateCause
Acft/equip,inadequate designOwner/builderCause
Fluid,fuel - starvationCause
Forced landingEmergency landing after takeoff
On ground/water encounter with terrain/waterLanding - roll
Terrain condition - roadway/highway
Terrain condition - crop
Main gear collapsedLanding - roll
Landing gear,main gear - overload

Analysis

The engine sustained a total loss of power during climb out from runway 17. Following the loss of power the pilot turned the airplane 180 degrees and attempted to land on runway 35. The airplane landed approximately 2 blocks short of the runway 35 threshold. During the landing the airplane crossed a road and came to rest in a wheat field. The airplane's fuel system had been redesigned by the builder. The pilot reported that the engine quit because the fuel line pick up on the right fuel tank became uncovered during climb.

Factual narrative

On July 19, 1996, at 1115 central daylight time (cdt), a Experimental Pud Knocker Special, N380BP, sustained substantial damage following a loss of power at the Grafton Municipal Airport, Grafton, North Dakota. The airplane had 5 hours of total flight time, and had just departed from runway 17. The private pilot sustained minor injuries in the accident. The 14 CFR Part 91 flight was operating in visual meteorological conditions, and no flight plan had been filed.

The airplane was on initial climb out after departing runway 17 at the Grafton Municipal Airport. During the climb the pilot reported that the airplane's engine sustained a total loss of power. Following the loss of power the pilot reported that he turned the airplane 180 degrees, and was attempting to land on runway 35. The pilot reported that the airplane landed approximately 2 blocks short of the runway 35 threshold. During the landing the airplane crossed a road and came to rest in a wheat field.

The airplane's fuel system had been redesigned by the builder. The pilot of N380BP wrote on NTSB form 6120.1/2 that the engine quit because the fuel line pick up on the right fuel tank became uncovered during climb.

The airplanes's wing struts, wing strut attachment fittings and fuselage lower longeron were bent in the accident. The bungee chord tubes and the right landing gear tube were separated from the airplane.

Aircraft

Registration
N380BP
Reported as
Poppenhagen PUD Knocker Special (PUD KNOCKE)
Category
Airplane, amateur-built
Serial number
1
Airframe hours
5
Engine
Lycoming O-320-A2B, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Byron Poppenhagen
Airworthiness certificate
Special, Experimental (Special)
Departed
GAF
Destination
GAF
Airport
GAF · Grafton Muni

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
48
Certificate
Airline transport
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Seat
Front
Flight hours
8,000 total · 5 in this make and model · 3,000 as pilot in command · 185 in the last 90 days · 65 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
120° at 7 knots
Visibility
8 statute miles
Lowest ceiling
1,000 ft broken
Temperature
70 °F, dew point 64 °F
Altimeter
30.00 inHg
Observed at
GFK

FAA reports on this event · 1

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