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NTSB Report
May 10, 1988 · Beech 200 · N981LL
Chicago, IL
Overview
Report Status
Preliminary report
Event Type
Incident
Date
May 10, 1988
Injury Outcomes
No injuries (95 uninjured)
Location
Chicago, IL
Aircraft
Beech 200
Tail Number
N981LL
Operator
State of Illinois
Injuries
None
NTSB Number
MIA88IA167
MIDWAY FLT 172 (MCDONNELL DOUGLAS DC-9, N1065T) WAS ON AN IFR DEPARTURE FROM CHICAGO MIDWAY ARPT AT THE SAME TIME THAT BEECH 200, N981LL, WAS ON AN IFR ARRIVAL FOR A VISUAL APCH TO MERRILL C MEIGS ARPT, ALTHOUGH BOTH WERE IN VMC. PREVIOUSLY, O'HARE TRACON HAD RESTRICTED EASTERLY DEPARTURES FROM MIDWAY TO NOT LESS THAN 20 MI IN-TRAIL. SUBSEQUENTLY, THE HANDOFF CONTROLLER (CTLR) AT TRACON INSTRUCTED THE CTLRS AT MIDWAY TOWER TO 'CANCEL THE RESTRICTION,' MEANING TO CANCEL THE IN-TRAIL RESTRICTION. HOWEVER, THE CTLRS AT MIDWAY THOUGHT THIS WAS IN REFERENCE TO A CLIMB RESTRICTION ON THE CANAL THREE SID WHICH FLT 172 WAS USING. SUBSEQUENTLY, FLT 172 & N981LL CONVERGED AS FLT 172 WAS CLIMBING TO 3000 FT & N981LL WAS DSCNDG TO 2000 FT. RADAR DATA SHOWED THE ACFT PASSED EACH OTHER WITH LESS THAN THE REQUIRED VERTICAL & HORIZONTAL SEPN.
Full Narrative
MIDWAY FLT 172 (MCDONNELL DOUGLAS DC-9, N1065T) WAS ON AN IFR DEPARTURE FROM CHICAGO MIDWAY ARPT AT THE SAME TIME THAT BEECH 200, N981LL, WAS ON AN IFR ARRIVAL FOR A VISUAL APCH TO MERRILL C MEIGS ARPT, ALTHOUGH BOTH WERE IN VMC. PREVIOUSLY, O'HARE TRACON HAD RESTRICTED EASTERLY DEPARTURES FROM MIDWAY TO NOT LESS THAN 20 MI IN-TRAIL. SUBSEQUENTLY, THE HANDOFF CONTROLLER (CTLR) AT TRACON INSTRUCTED THE CTLRS AT MIDWAY TOWER TO 'CANCEL THE RESTRICTION,' MEANING TO CANCEL THE IN-TRAIL RESTRICTION. HOWEVER, THE CTLRS AT MIDWAY THOUGHT THIS WAS IN REFERENCE TO A CLIMB RESTRICTION ON THE CANAL THREE SID WHICH FLT 172 WAS USING. SUBSEQUENTLY, FLT 172 & N981LL CONVERGED AS FLT 172 WAS CLIMBING TO 3000 FT & N981LL WAS DSCNDG TO 2000 FT. RADAR DATA SHOWED THE ACFT PASSED EACH OTHER WITH LESS THAN THE REQUIRED VERTICAL & HORIZONTAL SEPN.
Flight
Event TypeIncident
Event Time16:55 CDT
Nearest AirportChicago Midway (0nm N)
Runway0
Runway Length0
Runway Width0
Flight Plan FiledIFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBeech 200
Tail NumberN981LL
Aircraft CategoryAir
OperatorState of Illinois
Operating RulePart 91
Engines2
Engine TypeTurboprop
Engine DetailsP&W · PT6A-41 · Turboprop · 850 | P&W · JT8D · Turbofan · 14500
Seats10
People & Injuries
Injury SummaryNo injuries (95 uninjured)
Fatal0
Serious0
Minor0
Uninjured95
Total95
Crew 1Age 55 · First Class
Crew 2Age 45 · First Class
Conditions
ConditionsVMC
LightDaylight
Wind40° @ 8 kt
Visibility15 sm
CeilingBroken clouds 4000 ft
Temperature / Dew Point59 / 50
Altimeter29.00 inHg
Observation Time22:05
Weather SourceWFAC