Des Moines Intl Airport
Aircraft Accident/Incident Report

Des Moines, Iowa 50320
Monday, November 27, 1989 17:26 CST

NTSB Narrative Summary Released at Completion of Accident

THE ACFT WAS ON AN ILS APCH AT DUSK IN IMC & ICING CONDS WITH THE ALTERNATE AIR ON. ACCORDING TO THE PLT, HE HAD JUST DSCNDD BELOW AN OVC, ON FINAL APCH, WHEN THE ENG LOST PWR & WOULD NOT RESPOND TO THROTTLE APPLICATION. A FORCED LANDING WAS MADE IN A WOODED AREA SHORT OF THE RWY & THE ACFT WAS EXTENSIVELY DMGD. DRG AN EXAM OF THE ENG, THE TURBOCHARGER & WASTEGATE TRANSITION PIPES WERE FND SEPD AT THE FLANGE. CARBONACEOUS RESIDUE WAS FND IN THE AREA OF SEPN, BUT NO HEAT DAMAGE WAS NOTED. THE GASKET, BOLTS, WASHERS & SELF-LOCKING NUTS (FOR HOLDING THE PIPES TOGETHER) WERE NOT FND. LATER, THE ENG RAN SUCCESSFULLY DRG AN OPNL CHECK. DRG THE INVESTIGATION, 3 SIMILAR CASES OF PIPE SEPN WERE IDENTIFIED, WHICH INVOLVED ANOTHER ACFT; THESE RESULTED IN ONLY PARTIAL LOSSES OF PWR. THE RGT FRONT SEAT PAX RPRTD SEEING A TRACE OF ICE ON THE WINGS AS THE ACFT WAS DSCNDG THRU CLOUDS. THE PITOT HEAT, STALL WARNING HEAT, & ICE LIGHT SWITCH WERE FND IN THE 'OFF' POSITION. AT 1650 CST, THE TEMP & DEW POINT AT THE SURFACE WERE 36 & 35 DEG, RESPECTIVELY.

NTSB Probable Cause Narrative

LOSS OF ENGINE POWER FOR UNDETERMINED REASON(S). THE LIGHT CONDITIONS (DUSK) AND TREES IN IN THE EMERGENCY LANDING AREA WERE CONSIDERED TO BE CONTRIBUTING FACTORS.

Event Information

Type of Event Accident
Event Date 11/27/1989
Event Day of the Week Monday
Time of Event 1726
Event Time Zone Central Standard Time
Event City DES MOINES
Event State IOWA
Event Country --
Zipcode of the event site 50320
Event Date Year 1989
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 DMS
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 0
Degrees magnetic from airport 0
Airport Elevation 957
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1741 Central Standard Time
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID DSM
Elevation of weather observation facility 957
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation CST
Lighting Conditions Dusk
Lowest Ceiling Height 800
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Overcast
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 4
Air Temperature at event time (in degrees celsius) 2
Dew Point at event time (in degress fahrenheit) 1
Wind Direction (degrees magnetic) 310
Variable Wind Indicator Unknown
Wind Speed (knots) 12
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 19
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) 128
Intensity of Precipitation Light
METAR weather report --
Event Highest Injury Serious
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None --
Injury Total Serious 3
Injury Total All 3
Investigating Agency NTSB
NTSB Docket Number (internal use) 1655
NTSB Notification Source --
NTSB Notification Date Nov 27 1989 12:00AM
NTSB Notification Time 1815
Fiche Number and/or location -used to find docket information 40560
Date of most recent change to record Dec 13 2000 1:12PM
User who most recently changed record dbo
Basic weather conditions Instrument Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N919S
NTSB Number DEN90FA027
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-46P-350
Aircraft Series Identifier PA-46P-350
Aircraft Serial Number 46-22076
Certified Max Gross Weight 4300
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 6
Number of Engines 1
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Sep 22 1989 12:00AM
Airframe hours since last inspection 50
Airframe Hours 65
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name PARAMOUNT LEASING CORPORATION
Aircraft Owner Street Address P.O. BOX 1297
Aircraft Owner City DES MOINES
Aircraft Owner State IA
Aircraft Owner Country
Aircraft Owner Zipcode 50305
Operator is an individual? --
Operator Name PARAMOUNT LEASING CORPORATION
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address P.O. BOX 1297
Operator City DES MOINES
Operator State IA
Operator Country
Operator Zip code 50305
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 OMA
Departure City OMAHA
Departure State NE
Departure Country
Departure Time 1634
Departure Time Zone CST
Destination Same as Local Flt --
Destination Airport Code DSM
Destination City DES MOINES
Destination State IA
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 --