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Approach control issued clearance to maintain what the flight crew thought was their previously assigned altitude. B767 flight crew uncertain regarding altitude deviation.
| Attributes | |
| ACN | 311760 |
| Time | |
| Date | 199508 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : atl |
| State Reference | GA |
| Altitude | msl bound lower : 5000 msl bound upper : 7000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : atl |
| Operator | common carrier : air carrier |
| Make Model Name | B767 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent : approach descent other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 165 flight time total : 17000 flight time type : 1850 |
| ASRS Report | 311760 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | other anomaly other other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | controller : issued new clearance flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Ambiguous |
| Air Traffic Incident | other |
Narrative:
During our approach to runway 8L in atl during a period of minimum traffic, we were requested to reduce airspeed and increase the rate of descent for a short approach (less than 10 mi) to runway 8L. Clearance to lower approach altitudes were received, set, and initiated in rapid succession. We had 5000 ft set in the mode control panel altitude window and had passed through 7000 ft en route to 5000 ft. Approach control asked us to maintain 7000 ft. A climb was initiated back to 7000 ft. Just as we reached 7000 ft. We were cleared back to 5000 ft. The controller did not say what altitude we had actually been cleared to during the 7000 ft to 5000 ft (altitude set) descent. We never saw any other aircraft or traffic resolution.
Original NASA ASRS Text
Title: APCH CTL ISSUED CLRNC TO MAINTAIN WHAT THE FLC THOUGHT WAS THEIR PREVIOUSLY ASSIGNED ALT. B767 FLC UNCERTAIN REGARDING ALTDEV.
Narrative: DURING OUR APCH TO RWY 8L IN ATL DURING A PERIOD OF MINIMUM TFC, WE WERE REQUESTED TO REDUCE AIRSPD AND INCREASE THE RATE OF DSCNT FOR A SHORT APCH (LESS THAN 10 MI) TO RWY 8L. CLRNC TO LOWER APCH ALTS WERE RECEIVED, SET, AND INITIATED IN RAPID SUCCESSION. WE HAD 5000 FT SET IN THE MODE CTL PANEL ALT WINDOW AND HAD PASSED THROUGH 7000 FT ENRTE TO 5000 FT. APCH CTL ASKED US TO MAINTAIN 7000 FT. A CLB WAS INITIATED BACK TO 7000 FT. JUST AS WE REACHED 7000 FT. WE WERE CLRED BACK TO 5000 FT. THE CTLR DID NOT SAY WHAT ALT WE HAD ACTUALLY BEEN CLRED TO DURING THE 7000 FT TO 5000 FT (ALT SET) DSCNT. WE NEVER SAW ANY OTHER ACFT OR TFC RESOLUTION.
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.