FTW89DRA03

NTSB accident investigation · Benson B-8-M · La Porte, TX · March 25, 1989

Accident · No injuriesFinal report
Date
March 25, 1989, 10:12 local (16:12 UTC)
Place
La Porte, TX
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N9763NBenson B-8-M
Weather
Visual (VMC) · Day
Status
Completed · report August 2, 1990
Report
Approved by Office Director
FAA report
19890325004669A
Case key
22716

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

Hard landing which occurred as a result of the pilot having to extend his glide over obstacles on short final to the forced landing area. The forced landing was executed as a result of engine performance degradation due to induction icing for which no provisions had been made during the installation.

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) - nonmechanicalClimb - to cruise
Fuel system,carburetor - iceCause
Carburetor heat control - not installedCause
Weather condition - carburetor icing conditionsFactor
Forced landingDescent - emergency
Hard landingLanding - flare/touchdown
Terrain condition - none suitableFactor
Proper descent rate - not possiblePilot in commandCause

Analysis

During the takeoff climb the acft sustained a loss of power. The student plt had to extend the glide to clear obstacles during the forced landing. The plt stated the eng RPM gradually decreased during the climb to the point that he could not sustain flt. The icing probability charts indicated that conditions were favorable for the formation of visible ice in the induction system at rated pwr. There was no other suitable terrain available for the forced lndg.

Aircraft

Registration
N9763N
Reported as
Benson B-8-M
Category
Gyroplane, amateur-built
Serial number
9587-2-8014M
Airframe hours
10
Engine
Volkswagen 1800CC, 65 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Faulk, Mrvin L.
Registered owner
Marvin Faulk
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · March 7, 1989 · 10 hours before
Departed
T-41 · La Porte, TX
Destination
T-41
Airport
T-41

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
40
Certificate
Student
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Front
Flight hours
90 total · 10 in this make and model · 10 in the last 90 days · 10 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
120° at 12 knots
Visibility
12 statute miles
Lowest ceiling
3,300 ft overcast
Temperature
72 °F, dew point 61 °F
Altimeter
30.00 inHg
Observed at
HOU, 11 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.