Thermal Airport
Aircraft Accident/Incident Report

Thermal, California 92274
Friday, July 16, 1993 19:45 PDT

NTSB Narrative Summary Released at Completion of Accident

The pilot was taking a multi engine class certification check ride. The pilot examiner stated that the applicant pilot had been flying a Piper PA23-160 for his multi engine training. The PA23 cockpit is set up with the landing gear selector handle on the right side of the power quadrant and the flap selector on the left. The PA23 was in the maintenance shop and the applicant was given the Piper PA39 for his flight test. The PA39 cockpit is set up with the landing gear selector handle on the left side of the power quadrant and the flap selector on the right. The examiner stated that during the traffic pattern he personally checked that the landing gear handle was in the DOWN position, with three green indicator lights. The aircraft made a normal landing. The examiner said that during the landing roll out his attention was distracted momentarily by locating the radio microphone. When he looked up again, the examiner saw the aircraft settling down on the runway with the landing gear selector handle in the UP position. According to the pilot's statement, he said that he was reaching for the flap handle to retract the landing flaps and mistakenly moved the gear handle instead.

NTSB Probable Cause Narrative

the pilot's inadvertent movement of the landing gear selector switch to the up position. A factor in the accident was the difference in cockpit switch layout between the PA23 and PA39 aircraft.

Event Information

Type of Event Accident
Event Date 7/16/1993
Event Day of the Week Friday
Time of Event 1945
Event Time Zone Pacific Daylight Time
Event City THERMAL
Event State CALIFORNIA
Event Country --
Zipcode of the event site 92274
Event Date Year 1993
Event Date Month 7
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport THERMAL
Event Location Nearest Airport ID TRM
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 -117
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1850 Pacific Daylight Time
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID TRM
Elevation of weather observation facility 0
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation PDT
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) --
Visibility (Statute Miles) 25
Air Temperature at event time (in degrees celsius) 30
Dew Point at event time (in degress fahrenheit) 10
Wind Direction (degrees magnetic) 0
Variable Wind Indicator Unknown
Wind Speed (knots) 0
Wind Velocity Indicator Calm
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 29
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 2
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 941
NTSB Notification Source --
NTSB Notification Date Jul 17 1993 12:00AM
NTSB Notification Time 1910
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 11 2000 1:29PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N8975Y
NTSB Number LAX93LA291
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name PIPER
Aircraft Model PA-39
Aircraft Series Identifier PA-39
Aircraft Serial Number 39-141
Certified Max Gross Weight 3800
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 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Feb 5 1993 12:00AM
Airframe hours since last inspection 39
Airframe Hours 4334
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name JAMES HOSSLER & C. WOOD
Aircraft Owner Street Address P.O. BOX 94531
Aircraft Owner City LAS VEGAS
Aircraft Owner State NV
Aircraft Owner Country
Aircraft Owner Zipcode 89193
Operator is an individual? --
Operator Name PROFLIGHT, INC.
Operator Same as Owner? No
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? 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) Instructional
Second Pilot on Board Yes
Departure Point Same as Event No
Departure Airport Code PSP
Departure City PALM SPRINGS
Departure State CA
Departure Country
Departure Time 1830
Departure Time Zone PDT
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 Landing
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:30AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 30
Runway Length 4993
Runway Width 100
Sight Seeing flight No
Air Medical Flight No
Medical Flight --