Lubbock International Airport
Aircraft Accident/Incident Report

Petersburg, Texas 79250
Saturday, December 6, 1986 18:26 CST

NTSB Narrative Summary Released at Completion of Accident

ACFT IMPACTED IN A 95 DEG NOSE DOWN ATTITUDE FOLLOWING A LOSS OF CONTROL IN IMC CONDITIONS WHILE THE NON-INSTRUMENT RATED PVT PLT WAS BEING VECTORED TO THE FINAL APP CRS. PLT HAD FILED IFR AND HAD EXPERIENCED DIFFICULTIES THRU OUT THE FLT. AS HE WAS GIVEN VECTORS FOR SEQUENCING HIS FLYING BECAME ERRATIC AND HE COMPLAINED OF PITOT ICE AND INSTRUMENT PROBLEMS. ICING LVL WAS WELL ABOVE HIS ALT AND POST-ACCIDENT INVESTIGATION REVEALED THAT ALL INSTRUMENTS WERE WORKING NORMALLY. HIS DESCRIPTION OF THE PROBLEMS WAS INCONSISTENT WITH THE WAY THE 2 SEPARATE INSTRUMENT SYSTEMS OPERATE. THE PLT HAD RECENTLY FAILED HIS INSTRUMENT WRITTEN AND HAD A TOTAL OF 39 HRS SIMULATED INSTRUMENT TIME. EVIDENCE ALSO REVEALED HE WAS OPERATING THE ACFT WITH AN INOP ADF AND DEFICIENT VHF NAV RADIOS.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 12/6/1986
Event Day of the Week Saturday
Time of Event 1826
Event Time Zone Central Standard Time
Event City PETERSBURG
Event State TEXAS
Event Country --
Zipcode of the event site 79250
Event Date Year 1986
Event Date Month 12
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport LUBBOCK INTERNATIONAL
Event Location Nearest Airport ID LBB
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 15
Degrees magnetic from airport 45
Airport Elevation 3281
Weather Briefing Completeness Full
Investigator's weather source Weather Observation Facility
Time of the weather observation 1836 Central Standard Time
Direction of event from weather observation facility (degrees) 205
Weather Observation Facility ID LBB
Elevation of weather observation facility 3218
Distance of event from weather observation facility (units?) 15
Time Zone of the weather observation CST
Lighting Conditions Night/Bright
Lowest Ceiling Height 700
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 7
Air Temperature at event time (in degrees celsius) 12
Dew Point at event time (in degress fahrenheit) 12
Wind Direction (degrees magnetic) 170
Variable Wind Indicator Unknown
Wind Speed (knots) 13
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal 1
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 2352
NTSB Notification Source --
NTSB Notification Date Dec 6 1986 12:00AM
NTSB Notification Time 2046
Fiche Number and/or location -used to find docket information 33005
Date of most recent change to record Jan 2 2001 9:14AM
User who most recently changed record dbo
Basic weather conditions Instrument Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N4475F
NTSB Number FTW87FA029
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed IFR
Flight plan Was Activated? --
Damage Destroyed
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name PIPER
Aircraft Model PA-28R-200
Aircraft Series Identifier PA-28R-200
Aircraft Serial Number 28R7635409
Certified Max Gross Weight 2650
Aircraft Category Airplane
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 4
Number of Engines 1
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Mar 14 1986 12:00AM
Airframe hours since last inspection 144
Airframe Hours 1923
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site Yes
ELT Type --
Aircraft Owner Name GLEN A DUNN
Aircraft Owner Street Address 4859 PIETY
Aircraft Owner City NEW ORLEANS
Aircraft Owner State LA
Aircraft Owner Country
Aircraft Owner Zipcode 70126
Operator is an individual? --
Operator Name GLEN A.DUNN
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 4859 PIETY DR.
Operator City NEW ORLEANS
Operator State LA
Operator Country
Operator Zip code 70126
Operator Code
Owner has at least one certificate None
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Unknown
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) Personal
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code APA
Departure City DENVER
Departure State CO
Departure Country
Departure Time 1354
Departure Time Zone MST
Destination Same as Local Flt --
Destination Airport Code LBB
Destination City LUBBOCK
Destination State TX
Destination Country
Specific Phase of Flight Descent
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:36AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 17R
Runway Length 11500
Runway Width 150
Sight Seeing flight No
Air Medical Flight No
Medical Flight --