 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
B737-500 crew took the altitude change clearance for the same flight number, but different air carrier in iad class B airspace.
| Attributes | |
| ACN | 543967 |
| Time | |
| Date | 200204 |
| Day | Tue |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | intersection : banty |
| State Reference | TX |
| Altitude | msl bound lower : 5600 msl bound upper : 6000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : i90.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B737-500 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : intermediate altitude |
| Route In Use | arrival star : cougar |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 18000 flight time type : 400 |
| ASRS Report | 543967 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time total : 200 flight time type : 3000 |
| ASRS Report | 543968 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance non adherence : company policies non adherence : far non adherence : published procedure other anomaly other |
| Independent Detector | other controllera other flight crewa other flight crewb |
| Resolutory Action | controller : issued alert flight crew : returned to assigned altitude none taken : detected after the fact |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance ATC Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
We accepted altitude change clearance meant for other aircraft with same call sign, but different company. On cougar STAR, inside banty intersection, level 6000 ft. Told to slow to 190 KTS, then descend to 4000 ft. Read back clearance. While slowly descending, thought we heard approach clear us to 3000 ft. Read back clearance. Approach control said, 'negative, that was for other traffic, different company, maintain 6000 ft.' we acknowledged. We were now at 5600 ft and returned promptly to 6000 ft. We had no prior knowledge of other different company traffic being on our frequency.
Original NASA ASRS Text
Title: B737-500 CREW TOOK THE ALT CHANGE CLRNC FOR THE SAME FLT NUMBER, BUT DIFFERENT ACR IN IAD CLASS B AIRSPACE.
Narrative: WE ACCEPTED ALT CHANGE CLRNC MEANT FOR OTHER ACFT WITH SAME CALL SIGN, BUT DIFFERENT COMPANY. ON COUGAR STAR, INSIDE BANTY INTXN, LEVEL 6000 FT. TOLD TO SLOW TO 190 KTS, THEN DSND TO 4000 FT. READ BACK CLRNC. WHILE SLOWLY DSNDING, THOUGHT WE HEARD APCH CLR US TO 3000 FT. READ BACK CLRNC. APCH CTL SAID, 'NEGATIVE, THAT WAS FOR OTHER TFC, DIFFERENT COMPANY, MAINTAIN 6000 FT.' WE ACKNOWLEDGED. WE WERE NOW AT 5600 FT AND RETURNED PROMPTLY TO 6000 FT. WE HAD NO PRIOR KNOWLEDGE OF OTHER DIFFERENT COMPANY TFC BEING ON OUR FREQ.
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.