19960716046149A

Accident · No damage

FAA accident report · Stolac UC-1 · Princeton, TX · July 16, 1996

Date: July 16, 1996 · 08:00 local
Place: Princeton, TX
Operating rules: General operating rules (Part 91)
Damage: No damage
Aircraft: N9507U
NTSB investigation: NTSBFTW96LA305
Reported as: Stolac UC1

N9507URegistration cancelled May 1, 2014 · Stol UC-1S/N 017 · Built 1975 Airframe modelStol UC-1 Engine modelLycoming I0360 seriesReciprocating

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry by N-number and event date, checked against the reported make and model; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

(-23) At cruise altitude of 4500 ft, with engines set at 2300 RPM and 23 inches of manifold pressure, left engine propeller went to feather position without input of control from pilot. Propeller would not come out of feather position. Pilot secured engine and aircraft established 250 fpm descent rate. Pilot elected gear up landing in grass field, sustaining a/c damage. Engine to be disassembled, to establish reason for uncontrolled action, at pilot's home base. Sdl FSDO to assist.

As the FAA filed it

(-23) AT CRUISE ALTITUDE OF 4500 FT, WITH ENGINES SET AT 2300 RPM AND 23 INCHES OF MANIFOLD PRESSURE, LEFT ENGINE PROPELLER WENT TO FEATHER POSITION WITHOUT INPUT OF CONTROL FROM PILOT. PROPELLER WOULD NOT COME OUT OF FEATHER POSITION. PILOT SECURED ENGINE AND AIRCRAFT ESTABLISHED 250 FPM DESCENT RATE. PILOT ELECTED GEAR UP LANDING IN GRASS FIELD, SUSTAINING A/C DAMAGE. ENGINE TO BE DISASSEMBLED, TO ESTABLISH REASON FOR UNCONTROLLED ACTION, AT PILOT'S HOME BASE. SDL FSDO TO ASSIST.

NTSB investigation

The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.

NTSB FTW96LA305Accident · No injuriesLimited investigationFinal reportPrinceton, TXimproper adjustment of the left propeller governor which resulted in uncommanded feathering of the left propeller. Factors were: the airplane's inadequate engine out performance and the lack of suitable terrain for the forced landing.Jul 16, 1996 · Substantial damage