Sky Harbor Airport
Aircraft Accident/Incident Report

Phoenix, Arizona 85034
Tuesady, May 23, 1989 20:23 MST

NTSB Narrative Summary Released at Completion of Accident

THE AIRPLANE WAS ON A NIGHT FLIGHT AND WAS MAKING A VFR APPROACH AND LANDING. THE PILOT HAD BEEN INFORMED THAT HE WAS FOLLOWING A B737. ON THE BASE LEG, THE B737 WAS TURNING OFF THE RUNWAY AND THE PILOT WAS WARNED OF POSSIBLE WAKE TURBULENCE AND WAS CLEARED TO LAND. AS THE AIRPLANE WAS OVER THE THRESHOLD, THE PILOT FELT A LITTLE TURBULENCE AND INCREASED HIS AIRSPEED. THE AIRPLANE ROLLED ALMOST 360 DEGREES. THE PILOT WAS ABLE TO GET THE AIRPLANE UPRIGHT BEFORE IMPACT. THE PILOT HAD A VISUAL SIGHTING ON THE B737 THROUGHOUT ALL OF THE APPROACH AND ATTEMPTED LANDING.

NTSB Probable Cause Narrative

THE FAILURE OF THE PILOT TO MAINTAIN ADEQUATE CLEARANCE BEHIND THE B-737 WHICH RESULTED IN THE INADVERTENT ENCOUNTER WITH WAKE TURBULENCE.

Event Information

Type of Event Accident
Event Date 5/23/1989
Event Day of the Week Tuesday
Time of Event 2023
Event Time Zone Mountain Standard Time
Event City PHOENIX
Event State ARIZONA
Event Country --
Zipcode of the event site 85034
Event Date Year 1989
Event Date Month 5
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport SKY HARBOR
Event Location Nearest Airport ID PHX
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles 0
Degrees magnetic from airport 0
Airport Elevation 1132
Weather Briefing Completeness Unknown
Investigator's weather source Pilot
Time of the weather observation 0
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID
Elevation of weather observation facility 0
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation
Lighting Conditions Night/Dark
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Unknown
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 35
Air Temperature at event time (in degrees celsius) 34
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 210
Variable Wind Indicator Unknown
Wind Speed (knots) 5
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 667
NTSB Notification Source --
NTSB Notification Date May 24 1989 12:00AM
NTSB Notification Time 1100
Fiche Number and/or location -used to find docket information 40041
Date of most recent change to record Dec 13 2000 12:41PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N39520
NTSB Number LAX89LA186
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed Company VFR
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name PIPER
Aircraft Model PA-32RT-300T
Aircraft Series Identifier PA-32RT-30
Aircraft Serial Number 32R-7887099
Certified Max Gross Weight 3600
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 Retractable
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection May 4 1989 12:00AM
Airframe hours since last inspection 34
Airframe Hours 2787
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site Yes
ELT Type --
Aircraft Owner Name WINGS EXPRESS, INC.
Aircraft Owner Street Address 3915 W COMMONWEATH AVE.
Aircraft Owner City FULLERTON
Aircraft Owner State CA
Aircraft Owner Country
Aircraft Owner Zipcode
Operator is an individual? --
Operator Name WINGS EXPRESS AIRLINE
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 16644 ROSCO BLVD.
Operator City VAN NUYS
Operator State CA
Operator Country
Operator Zip code 91406
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) Positioning
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code P19
Departure City CHANDLER
Departure State AZ
Departure Country
Departure Time 2000
Departure Time Zone MST
Destination Same as Local Flt crash at destination city
Destination Airport Code PHX
Destination City
Destination State
Destination Country
Specific Phase of Flight Descent
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 26L
Runway Length 10300
Runway Width 150
Sight Seeing flight No
Air Medical Flight No
Medical Flight --