Des Moines Intl Airport
Aircraft Accident/Incident Report

Des Moines, Iowa 50321
Thursday, November 29, 1990 10:16 CST

NTSB Narrative Summary Released at Completion of Accident

ON FINAL APPROACH, AFTER BEING CLEARED TO LAND, THE PILOT INFORMED THE CONTROLLER THAT HE MIGHT HAVE TO SHUT DOWN AN ENGINE. HE DECLINED TO DECLARE AN EMERGENCY OR REQUEST ASSISTANCE. ON SHORT FINAL, THE AIRCRAFT WAS OBSERVED TO ROLL TO THE LEFT AND DESCENT INTO THE TERRAIN. SUBSEQUENT EXAMINATION REVEALED EVIDENCE THAT THE LEFT ENGINE WAS NOT DEVELOPING POWER, ALTHOUGH THE LEFT PROPELLER WAS NOT FEATHERED. THERE WAS EVIDENCE THAT THE RIGHT ENGINE WAS PRODUCING HIGH POWER DURING IMPACT. NO MECHANICAL DEFICIENCY OF THE LEFT ENGINE OR PROPELLER WAS FOUND.

NTSB Probable Cause Narrative

THE PILOT'S IMPROPER EMERGENCY PROCEDURES BY NOT FEATHERING THE LEFT ENGINE AFTER IT LOST POWER AND/OR WAS SHUT DOWN, AND HIS FAILURE TO KEEP THE AIRCRAFT AT OR ABOVE THE MINIMUM CONTROL AIRSPEED (VMC), WHICH RESULTED IN A LOSS OF AIRCRAFT CONTROL. A FACTOR RELATED TO THE ACCIDENT WAS: AN UNDETERMINED PROBLEM CONCERNING THE LEFT ENGINE THAT CAUSED IT TO LOSE POWER OR PROMPTED THE PILOT TO SHUT IT DOWN.

Event Information

Type of Event Accident
Event Date 11/29/1990
Event Day of the Week Thursday
Time of Event 1016
Event Time Zone Central Standard Time
Event City DES MOINES
Event State IOWA
Event Country --
Zipcode of the event site 50321
Event Date Year 1990
Event Date Month 11
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport DES MOINES INTL
Event Location Nearest Airport ID DSM
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation 957
Weather Briefing Completeness Unknown
Investigator's weather source Unknown
Time of the weather observation 1021
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID DSM
Elevation of weather observation facility 0
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 20
Air Temperature at event time (in degrees celsius) -18
Dew Point at event time (in degress fahrenheit) -18
Wind Direction (degrees magnetic) 220
Variable Wind Indicator Unknown
Wind Speed (knots) 7
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) 0
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) 2280
NTSB Notification Source --
NTSB Notification Date Nov 29 1990 12:00AM
NTSB Notification Time 1045
Fiche Number and/or location -used to find docket information 44624
Date of most recent change to record Dec 18 2002 11:28AM
User who most recently changed record NTSB\GIUV
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N1879W
NTSB Number CHI91FA035
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 Ground
Aircraft Explosion None
Aircraft Manufacturer's Full Name PIPER
Aircraft Model PA-31T2
Aircraft Series Identifier PA-31T2
Aircraft Serial Number 31T-8166065
Certified Max Gross Weight 9000
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 8
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Unknown
Date of Last Inspection --
Airframe hours since last inspection 0
Airframe Hours --
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name
Aircraft Owner Street Address
Aircraft Owner City
Aircraft Owner State
Aircraft Owner Country
Aircraft Owner Zipcode
Operator is an individual? --
Operator Name CENTURY LIFE OF AMERICA
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address HERITAGE WAY
Operator City WAVERLY
Operator State IA
Operator Country
Operator Zip code 50677
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) Business
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code MSN
Departure City MADISON
Departure State WI
Departure Country
Departure Time 915
Departure Time Zone CST
Destination Same as Local Flt crash at destination city
Destination Airport Code DSM
Destination City
Destination State
Destination Country
Specific Phase of Flight Approach
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:35AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 30R
Runway Length 9001
Runway Width 150
Sight Seeing flight No
Air Medical Flight No
Medical Flight --