CHI87IA112

NTSB incident investigation · Dassault-Breguet 50 · Cleveland, OH · March 31, 1987

Incident · No injuriesIncident investigationFinal report
Date
March 31, 1987, 15:57 local (20:57 UTC)
Place
Cleveland, OH
Injuries
6 uninjured
Damage
No damage
Phase of flight
Enroute
Aircraft
N52DCDassault-Breguet 50
Weather
Visual (VMC) · Day
Status
Completed · report July 10, 1989
Report
Approved by Office Director
Case key
13666

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the incident.

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Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Near collision between aircraftCruise - normal
Radar separation - inadequateAtc personnel(artcc)Cause

Analysis

An opnl error developed as a falcon 50, N52DC, was proceeding se toward the dryer VOR at FL290 & northwest flt 427 was proceeding westbound at the same alt toward the same fix (dryer VOR). When the full performance lvl (fpl) controller (ctlr) saw the situation developing, he provided avoidance vectors to each acft. However, they passed each other with about 1.5 mi horizontal sepn & 800' vertical sepn. The workload had become heavy & complex just prior to the occurrence. As the tracker was notifying the fpl ctlr of the conflict, the conflict alert was activated.

Aircraft

Registration
N52DC
Reported as
Dassault-Breguet 50
Category
Airplane
Serial number
51
Engine
Airesearch TFE 731-3-1C, 3,700 lbs thrust, turbo fan
Damage
No damage
Flight
Executive/Corporate · Part 91
Operator
Dow Chemical
Registered owner
Dow Chemical
Airworthiness certificate
Standard, Transport
Departed
MBS · Saginaw, MI
Destination
DCA · Washington, DC
Flight plan
IFR

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
47
Certificates
Airline transport, Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
12,200 total

Weather

Conditions
Visual (VMC) · Day
Visibility
10 statute miles
Lowest ceiling
None