Isla Grade Airport
Aircraft Accident/Incident Report

San Juan
Tuesady, April 22, 1986 9:30 EST

NTSB Narrative Summary Released at Completion of Accident

THE PLT STATED THAT ON LANDING THE ACFT STARTED TO PORPOISE.HE LOST CONTROL, THE LANDING GEAR COLLAPSED AND THE ACFT SLID TO A STOP ON THE RWY.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 4/22/1986
Event Day of the Week Tuesday
Time of Event 930
Event Time Zone Eastern Standard Time
Event City SAN JUAN
Event State PUERTO RICO
Event Country --
Zipcode of the event site 00911
Event Date Year 1986
Event Date Month 4
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport ISLA GRADE
Event Location Nearest Airport ID MJ1G
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 10
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 944 Atlantic Standard Time
Direction of event from weather observation facility (degrees) 90
Weather Observation Facility ID SJU
Elevation of weather observation facility 10
Distance of event from weather observation facility (units?) 5
Time Zone of the weather observation AST
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 3000
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 15
Air Temperature at event time (in degrees celsius) 28
Dew Point at event time (in degress fahrenheit) 24
Wind Direction (degrees magnetic) 80
Variable Wind Indicator Unknown
Wind Speed (knots) 9
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) 1500
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) 438
NTSB Notification Source --
NTSB Notification Date Apr 22 1986 12:00AM
NTSB Notification Time 1100
Fiche Number and/or location -used to find docket information 30771
Date of most recent change to record Jan 2 2001 9:14AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N6155V
NTSB Number MIA86LA127
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 Consolidated Aeronautics Inc.
Aircraft Model LAKE LA-4-200
Aircraft Series Identifier LAKE LA-4-
Aircraft Serial Number 809
Certified Max Gross Weight 2690
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 4
Number of Engines 1
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Dec 20 1985 12:00AM
Airframe hours since last inspection --
Airframe Hours 839
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name HECOR CORPORATION
Aircraft Owner Street Address ESMERALDA AVE. #59
Aircraft Owner City GUAYNABO
Aircraft Owner State PR
Aircraft Owner Country
Aircraft Owner Zipcode 00657
Operator is an individual? --
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? 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 No
Departure Point Same as Event Yes
Departure Airport Code
Departure City
Departure State
Departure Country
Departure Time 845
Departure Time Zone AST
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 10:36AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 9
Runway Length 5300
Runway Width 100
Sight Seeing flight No
Air Medical Flight No
Medical Flight --