Aircraft Accident/Incident Report

Chicago, Illinois 60666
Wednesday, April 17, 1985 13:19 CST

NTSB Narrative Summary Released at Completion of Accident

ON APRIL 17,1985 AT 1319CST, AT CHICAGO O'HARE INTERNATIONALAIRPORT, A DE HAVILLAND DH-125,N711WJ, REGISTERED TO RYNES AVIATION,INC., AND FLOWN BY ATR RONALD F. RYNES, COLLIDED WITH A FENCE AND A MOVABLE PASSENGER LOADING STAIRS AFTER EXPERIENCING A TOTAL LOSS OF HYDRAULIC PRESSURE WHICH RENDERED THE BRAKES INOPERATIVE. VISUAL METEOROLOGICAL CONDITIONS PREVAILED AT THE TIME OF THE ACCIDENT. THE AIRCRAFT HAD BEEN FILED ON AN IFR FLIGHT PLAN. THE AIRCRAFT RECEIVED MINOR DAMAGE. THERE WERE NO INJURIES TO THE OCCUPANTS. THERE WAS NO FIRE. THE FLIGHT ORIGINATED AT BOCA RATON AIRPOR, FLORIDA AT ABOUT 1130 EST ON APRIL 17,1985. THE AIRCRAFT WAS PREPARING FOR DESCENT INTO CHICAGO FOR A LANDING AT MEIGS FIELD WHEN THE CREW BECAME AWARE OF A TOTAL LOSS OF HYDRAULIC SYSTEM PRESSURE IN THE NORMAL SYSTEM. THEY MADE A DECISION TO LAND AT O'HARE AIRPORT DUE TO THE BETTER RUNWAYS AND AVAILABILITY OF GREATER CRASH FIRE RESCUE CAPABILITY.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Incident
Event Date 4/17/1985
Event Day of the Week Wednesday
Time of Event 1319
Event Time Zone Central Standard Time
Event City CHICAGO
Event State ILLINOIS
Event Country --
Zipcode of the event site 60666
Event Date Year 1985
Event Date Month 4
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport
Event Location Nearest Airport ID
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 --
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1250 Central Standard Time
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID ORD
Elevation of weather observation facility 660
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation CST
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 24000
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) 18
Dew Point at event time (in degress fahrenheit) 7
Wind Direction (degrees magnetic) 190
Variable Wind Indicator Unknown
Wind Speed (knots) 16
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
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 4
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 5057
NTSB Notification Source --
NTSB Notification Date Apr 17 1985 12:00AM
NTSB Notification Time 1530
Fiche Number and/or location -used to find docket information 29677
Date of most recent change to record Jan 2 2001 9:15AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N711WJ
NTSB Number CHI85IA166
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 135: Air Taxi & Commuter
Type of Flight Plan filed IFR
Flight plan Was Activated? --
Damage Minor
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name de Havilland
Aircraft Model DH-125
Aircraft Series Identifier DH-125
Aircraft Serial Number 25021
Certified Max Gross Weight 23100
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 9
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection AAIP
Date of Last Inspection --
Airframe hours since last inspection 10
Airframe Hours 6710
ELT Installed Yes
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name
Aircraft Owner Street Address
Aircraft Owner City
Aircraft Owner State
Aircraft Owner Country
Aircraft Owner Zipcode
Operator is an individual? --
Operator Name RONALD F. RYNES
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address P.O. BOX 66385
Operator City CHICAGO
Operator State IL
Operator Country
Operator Zip code 60666
Operator Code
Owner has at least one certificate Yes - certificate holder
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 Non-scheduled
Indicates Domestic or International Flight Domestic
Operator carrying Pax/Cargo/Mail Passenger Only
Type of Flying (Per_Bus / Primary) Unknown
Second Pilot on Board Yes
Departure Point Same as Event No
Departure Airport Code BCT
Departure City BOCA RATON
Departure State FL
Departure Country
Departure Time 1130
Departure Time Zone EST
Destination Same as Local Flt --
Destination Airport Code CGX
Destination City CHICAGO
Destination State IL
Destination Country
Specific Phase of Flight Taxi
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 0
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --