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| 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: | |
| Las Vegas-McCarran International Airport, NV (LAS/KLAS) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
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:
 |
|
Sources:
NTSB CHI87IA135
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 27-Mar-2024 08:20 | ASN Update Bot | Added |
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