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An air carrier medium large transport descending in ZID airspace copies the wrong frequency for the next ARTCC controller. It happens that the flight crew changes to an ord approach frequency. The approach controller gives directions for 4 mins before getting aircraft back to ARTCC.
| Attributes | |
| ACN | 400516 |
| Time | |
| Date | 199804 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : mie |
| State Reference | IN |
| Altitude | msl bound lower : 17000 msl bound upper : 25000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | other : unknown |
| Flight Phase | descent other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Experience | flight time last 90 days : 200 flight time total : 12000 flight time type : 1100 |
| ASRS Report | 400516 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : became reoriented flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | other |
Narrative:
Air carrier 1 bwi-ind, apr/xx/98, 90 NM mie, heading 273 degree frequency change given 125.07, air carrier 1 read back and understood 125.37 and read back. Air carrier 1 checked on 125.37 (ord approach) requested right around WX at FL250. 125.37 was working air carrier 2 and air carrier 3 -- did not realize that air carrier 1 was on wrong frequency and cleared air carrier 1 right around WX down to 17000 ft, altimeter 29.81. For about 4 mins air carrier 1 was being controled by ord approach while inbound to ind. No pilot or controller knew what was going on! Air carrier 1 returned to ind approach frequency after 2 or 3 frequency changes and completed flight. The overlapping frequency and like call signs was a problem.
Original NASA ASRS Text
Title: AN ACR MLG DSNDING IN ZID AIRSPACE COPIES THE WRONG FREQ FOR THE NEXT ARTCC CTLR. IT HAPPENS THAT THE FLC CHANGES TO AN ORD APCH FREQ. THE APCH CTLR GIVES DIRECTIONS FOR 4 MINS BEFORE GETTING ACFT BACK TO ARTCC.
Narrative: ACR 1 BWI-IND, APR/XX/98, 90 NM MIE, HDG 273 DEG FREQ CHANGE GIVEN 125.07, ACR 1 READ BACK AND UNDERSTOOD 125.37 AND READ BACK. ACR 1 CHKED ON 125.37 (ORD APCH) REQUESTED R AROUND WX AT FL250. 125.37 WAS WORKING ACR 2 AND ACR 3 -- DID NOT REALIZE THAT ACR 1 WAS ON WRONG FREQ AND CLRED ACR 1 R AROUND WX DOWN TO 17000 FT, ALTIMETER 29.81. FOR ABOUT 4 MINS ACR 1 WAS BEING CTLED BY ORD APCH WHILE INBOUND TO IND. NO PLT OR CTLR KNEW WHAT WAS GOING ON! ACR 1 RETURNED TO IND APCH FREQ AFTER 2 OR 3 FREQ CHANGES AND COMPLETED FLT. THE OVERLAPPING FREQ AND LIKE CALL SIGNS WAS A PROB.
Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.