NYC98LA118

NTSB accident investigation · Morrison Rans S-12 · Gum Spring, VA · May 16, 1998

Accident · No injuriesLimited investigationFinal report
Date
May 16, 1998, 13:00 local (17:00 UTC)
Place
Gum Spring, VA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N91337Morrison Rans S-12
Weather
Visual (VMC) · Day
Status
Completed · report June 21, 2000
Report
Approved by Office Director
FAA report
19980516032069A
Case key
39568

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 loose/partially disconnected engine intake fuel line which resulted in a loss of engine power, and the pilot's delayed (late) flare prior to touchdown.

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 powerTakeoff - initial climb
Fuel system,line - looseCause
Forced landingDescent - emergency
Hard landingLanding - flare/touchdown
Flare - delayedPilot in commandCause

Analysis

After two uneventful flights earlier in the day, the pilot departed on another flight. During the initial climb, approximately 250-300 feet above the runway, the engine sputtered and recovered. A second later the engine sputtered again; however, it did not recover. The pilot said the engine continued to run, but produced 'very little power.' The pilot then executed a 180 degree turn back towards the airport and attempted a forced landing to the runway. He reported that he was able to partially flare just before hitting the surface. Examination of the wreckage revealed that the intake hose which extended from one of the carburetors to the engine was loose and partially disconnected.

Factual narrative

On May 16, 1998, about 1300 eastern daylight time, a homebuilt Rans S-12, N91337, was substantially damaged when it impacted terrain shortly after takeoff from the Holly Springs Airport (80VA), Gum Spring, Virginia. The certificated private pilot was not injured. Visual meteorological conditions prevailed and no flight plan had been filed for the personal flight destined for the Warrenton Airpark Airport, Warrenton, Virginia. The flight was conducted under 14 CFR Part 91.

In a written statement, the pilot said he had flown the airplane on two flights earlier in the day and experienced no problems. He then departed runway 24 at 80VA, a 2,000 foot long turf runway. During the initial climb, approximately 250-300 feet above the runway, the engine sputtered and recovered. A second later the engine sputtered again; however, it did not recover. The pilot said the engine continued to run, but produced "very little power." The pilot then turned back towards the airport and attempted a forced landing to the runway. The pilot further stated:

"...In my attempt to land, I made the turn with a sharp attitude of descent to maintain sufficient airspeed so that I did not stall. I completed the 180 degree turn and was successive in partially flaring the aircraft just before hitting the surface. I was at approximately [a] 30 degree angle to the [runway]..."

Examination of the wreckage by a Federal Aviation Administration Inspector revealed that the rubber intake hose which extended from one of the carburetors to the engine was loose and partially disconnected.

Aircraft

Registration
N91337
Reported as
Morrison Rans S-12
Category
Airplane, amateur-built
Serial number
1292361
Airframe hours
116
Engine
Rotax 582, 65 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
James R. Birnbaum
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · January 20, 1998 · 6 hours before
Departed
80VA
Destination
9W0 · Warrenton, VA
Airport
80VA · Holly Springs Airport, runway 24, 2,000 × 90 ft, grass/turf

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
56
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
189 total · 71 in this make and model · 139 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
Variable at 3 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
88 °F, dew point 54 °F
Altimeter
29.00 inHg
Observed at
RIC, 30 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.

Other investigations on N91337 · 1

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