Date: | Friday 29 May 1987 |
Time: | 19:58 LT |
Type: | McDonnell Douglas MD-82 |
Owner/operator: | American Airlines |
Registration: | N224AA |
MSN: | |
Engine model: | P&W JT8D |
Fatalities: | Fatalities: 0 / Occupants: 83 |
Other fatalities: | 0 |
Aircraft damage: | None |
Category: | Serious incident |
Location: | Chicago, IL -
United States of America
|
Phase: | En route |
Nature: | Passenger - Scheduled |
Departure airport: | |
Destination airport: | Las Vegas-McCarran International Airport, NV (LAS/KLAS) |
Investigating agency: | NTSB |
Confidence Rating: | Accident investigation report completed and information captured |
Narrative:AMERICAN FLT 637 WAS ON DEPARTURE FROM CHICAGO-O'HARE INTL ARPT (ORD), CLIMBING THRU 7300' MSL, WHEN IT PASSED AMERICAN FLT 393 WITH APRX 500' VERTICAL SEPN & 1/4 MI HORIZONTAL SEPN. THIS OCCURRED AFTER AN AIR TRAFFIC ASSISTANT, WHO WAS WORKING THE CLNC DELIVERY PSN AT ORD, HAD ISSUED THE SAME TRANSPONDER CODE TO FLT 637 & UNITED FLT 441. SUBSEQUENTLY, A TRAINEE CONTROLLER (CTLR), WHO WAS WORKING AT THE WEST DEPARTURE RADAR CONTROL POSITION, MISTOOK FLT 441'S TARGET AS THAT OF FLT 637 & ISSUED CLIMB INSTRUCTIONS TO FLT 637. THE INSTRUCTOR DID NOT RECOGNIZE THE ERROR IN TIME TO CORRECT THE CTLR'S ACTION.
Probable Cause:
Accident investigation:
|
| |
Investigating agency: | NTSB |
Report number: | CHI87IA135 |
Status: | Investigation completed |
Duration: | 2 years 1 month |
Download report: | Final report
|
|
Sources:
NTSB CHI87IA135
Revision history:
Date/time | Contributor | Updates |
27-Mar-2024 08:20 |
ASN Update Bot |
Added |
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