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NTSB Report
April 17, 1985 · De Havilland DH-125 · N711WJ
Chicago, IL
Overview
Report Status
Preliminary report
Event Type
Incident
Date
April 17, 1985
Injury Outcomes
No injuries (4 uninjured)
Location
Chicago, IL
Aircraft
De Havilland DH-125
Tail Number
N711WJ
Operator
Ronald F Rynes
Injuries
None
Aircraft Damage
Minor
NTSB Number
CHI85IA166
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.
Full Narrative
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.
Flight
Event TypeIncident
Event Time13:19 CST
Nearest Airport0nm N
Runway0
Flight Plan FiledIFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftDe Havilland DH-125
Tail NumberN711WJ
Aircraft CategoryAir
DamageMinor
OperatorRonald F Rynes
Operating RulePart 135
Engines2
Engine TypeTurbojet
Engine DetailsBristsidviper · 522 · Turbojet · 3360
Seats9
People & Injuries
Injury SummaryNo injuries (4 uninjured)
Fatal0
Serious0
Minor0
Uninjured4
Total4
Crew 1Age 55 · Unknown
Conditions
ConditionsVMC
LightDaylight
Wind190° @ 16 kt
Visibility15 sm
CeilingNone
Temperature / Dew Point64 F / 45 C
Altimeter30.00 inHg
Observation Time18:50
Weather SourceWFAC