Aircraft Accident/Incident Report

St. George, Utah 84770
Thursday, June 17, 2004 17:46 MDT

NTSB Narrative Summary Released at Completion of Accident

Following a fire retardant drop, the airplane pitched nose up about 10 degrees, and then the nose dropped down 45 degrees, and the airplane descended into the ground. Drop altitude was about 100 feet above ground level (agl), and the ground sloped down about 20 degrees throughout the drop zone. The pilot made one practice dry run at his request. On the second pass, the pilot told the tactical air controller that he overshot final, and was going around. On the third pass, the pilot called downwind, base, and final. The pilot made no other transmissions, and did not indicate that he was having any problems. Witnesses saw the retardant exit the airplane; however, the drop was not at the desired point, and not distributed in an even line as the pilot's previous drops had been. The drop angled about 10 degrees to the final approach course. The drop pattern was wide and heavy at the beginning, and narrow and thin at the end. This indicated that the pilot initiated the drop early while turning onto final. About 2 seconds after the drop, the nose of the airplane pitched up slightly, which was normal after a drop. The nose of the airplane then pitched down about 45 degrees. The airplane maintained this attitude until ground impact. A prominent bend of the propeller shaft and a twist in the vertical splines indicated that the engine was generating high power. Post flight examination of the wreckage did not reveal any anomalies with the flight control system. Stall speeds with vortex generators installed varied from 73 mph in the clean configuration to 72 mph with full flaps. Drop techniques, airspeed, and flap settings varied among Dromadier pilots. Some pilots flew at airspeeds of 85 to 90 mph to lesson the pitch up on pull out. The M-18 operator's manual indicated that, with the sudden shift in CG at retardant release, the airplane would pitch up, and airspeed could decrease as much as 12 mph.

NTSB Probable Cause Narrative

The pilot's failure to maintain an adequate airspeed margin, resulting in a stall and loss of control.

Event Information

Type of Event Accident
Event Date 6/17/2004
Event Day of the Week Thursday
Time of Event 1746
Event Time Zone Mountain Daylight Time
Event City St. George
Event State UTAH
Event Country --
Zipcode of the event site 84770
Event Date Year 2004
Event Date Month 6
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 371934N
Event Location Longitude 1133681W
Event Location Airport --
Event Location Nearest Airport ID --
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 --
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1755 Mountain Daylight Time
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID SGU
Elevation of weather observation facility 2941
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation MDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 33
Dew Point at event time (in degress fahrenheit) 4
Wind Direction (degrees magnetic) 100
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 6
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.89
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
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) 21948
NTSB Notification Source FAA
NTSB Notification Date Jun 17 2004 12:00AM
NTSB Notification Time 2052
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Jul 25 2007 12:22PM
User who most recently changed record NTSB\lema
Basic weather conditions Visual Meteorological Cond
FAA District Office SLC FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N8214J
NTSB Number LAX04GA243
Missing Aircraft Indicator --
Federal Aviation Reg. Part Public Use
Type of Flight Plan filed Company VFR
Flight plan Was Activated? No
Damage Destroyed
Aircraft Fire Ground
Aircraft Explosion Ground
Aircraft Manufacturer's Full Name WSK PZL Mielec
Aircraft Model M-18A
Aircraft Series Identifier --
Aircraft Serial Number 1Z020-21
Certified Max Gross Weight 11700
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 1
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection --
Date of Last Inspection --
Airframe hours since last inspection --
Airframe Hours 1500
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name New Frontier Aviation, Inc.
Aircraft Owner Street Address P.O. Box 134
Aircraft Owner City Fort Benton
Aircraft Owner State MT
Aircraft Owner Country USA
Aircraft Owner Zipcode 59442
Operator is an individual? No
Operator Name Bureau of Land Management, Aviation Office
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 3833 S. Development Ave.
Operator City Boise
Operator State ID
Operator Country USA
Operator Zip code 83705
Operator Code --
Owner has at least one certificate --
Other Operator of large aircraft? --
Certified for Part 133 or 137 Operation Agriculture
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) Public Use
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code SGU
Departure City St. George
Departure State UT
Departure Country USA
Departure Time 1730
Departure Time Zone MDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code --
Destination City --
Destination State --
Destination Country --
Specific Phase of Flight Maneuvering - aerial application
Report sent to ICAO? No
Evacuation occurred No
Date of most recent change to record Jul 18 2007 5:27PM
User who most recently changed record COOS
Since inspection or accident --
Event Location Runway Number and Location NA
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --