Nas Whidbey Island Airport
Aircraft Accident/Incident Report

Nas Whidbey, Washington 98278
Sunday, March 17, 2002 17:49 PST

NTSB Narrative Summary Released at Completion of Accident

Although the pilot of the Cessna 152, who had been cleared by the tower to taxi into position and hold for takeoff, was aware that the large military turboprop aircraft he had to taxi behind may be doing periodic engine runs, he did not initiate communications that would positively ascertain the power settings of its engines. Just about the time he attempted to taxi past, two of the turboprop's four engines were advanced to a high power setting, and the resultant propwash flipped the 152 on its back. The crew of the turboprop aircraft, who were monitoring ground, were not aware that an aircraft was taxiing behind them after being cleared by the tower to taxi into takeoff position and hold.

NTSB Probable Cause Narrative

The pilot's improper decision to taxi behind a standing large military turbo-prop aircraft, which he knew may be performing periodic engine test runs, without first initiating communications to insure that the engine power on the standing aircraft would remain at idle as his aircraft taxied passed, thus leading to an inadvertent encounter with high-power propwash.

Event Information

Type of Event Accident
Event Date 3/17/2002
Event Day of the Week Sunday
Time of Event 1749
Event Time Zone Pacific Standard Time
Event City NAS Whidbey
Event State WASHINGTON
Event Country --
Zipcode of the event site 98278
Event Date Year 2002
Event Date Month 3
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 474813N
Event Location Longitude 1223918W
Event Location Airport NAS Whidbey Island
Event Location Nearest Airport ID KNUW
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation 47
Weather Briefing Completeness --
Investigator's weather source Pilot
Time of the weather observation
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID --
Elevation of weather observation facility --
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation --
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling --
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 9
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 310
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 5
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Minor
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor 2
Injury Total None --
Injury Total Serious --
Injury Total All 2
Investigating Agency NTSB
NTSB Docket Number (internal use) 12879
NTSB Notification Source FAA Operations Center
NTSB Notification Date Mar 17 2002 12:00AM
NTSB Notification Time 2330
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Apr 15 2003 4:03PM
User who most recently changed record NTSB\MONR
Basic weather conditions Visual Meteorological Cond
FAA District Office Seattle FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N25455
NTSB Number SEA02LA055
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Cessna
Aircraft Model 152
Aircraft Series Identifier --
Aircraft Serial Number 15280665
Certified Max Gross Weight 1670
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 2
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Continuous Airworthiness
Date of Last Inspection Feb 14 2002 12:00AM
Airframe hours since last inspection 46
Airframe Hours --
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name United States Navy
Aircraft Owner Street Address Bld. 2563 NAS Whidbey
Aircraft Owner City Oak Harbor
Aircraft Owner State WA
Aircraft Owner Country USA
Aircraft Owner Zipcode 98278
Operator is an individual? No
Operator Name --
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address --
Operator City --
Operator State --
Operator Country --
Operator Zip code --
Operator Code --
Owner has at least one certificate None
Other Operator of large aircraft? --
Certified for Part 133 or 137 Operation --
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) Instructional
Second Pilot on Board Yes
Departure Point Same as Event Yes
Departure Airport Code KNUW
Departure City NAS Whidbey
Departure State WA
Departure Country USA
Departure Time --
Departure Time Zone PST
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code KNUM
Destination City --
Destination State --
Destination Country --
Specific Phase of Flight Taxi - to takeoff
Report sent to ICAO? No
Evacuation occurred No
Date of most recent change to record Dec 2 2002 2:24PM
User who most recently changed record STAM
Since inspection or accident --
Event Location Runway Number and Location --
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --