 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Operational deviation. Controller issued 2 different clrncs or flight crew totally misinterpreted clearance. Controller did not monitor flight crew readback.
| Attributes | |
| ACN | 113719 |
| Time | |
| Date | 198906 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : avp |
| State Reference | PA |
| Altitude | msl bound lower : 10700 msl bound upper : 12000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zny |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | cruise other descent other |
| Route In Use | enroute airway : zny |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 8000 flight time type : 150 |
| ASRS Report | 113719 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : cfi pilot : flight engineer |
| Experience | flight time last 90 days : 150 flight time total : 6000 flight time type : 3000 |
| ASRS Report | 113718 |
| Events | |
| Anomaly | altitude deviation : overshoot |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance none taken : anomaly accepted |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Ambiguous |
| Air Traffic Incident | Pilot Deviation Operational Deviation |
Narrative:
ZNY issued clearance to descend so as to cross 10 mi north of avp at 10,000'. As we were descending through approximately 10,700' center said to maintain 12,000. We began a climb and told center we were cleared to 10,000. (That is what we read back.) he said to now maintain 11,000, which we did. Both the captain (who took the clearance and read back 10,000) and I had 10,000 written down and we are also sure he read back 10,000 in accepting the clearance. If there was a miscopied clearance, the controller should have picked up the incorrect readback. I've noticed frequently lately that controllers are not listening well to readbacks.
Original NASA ASRS Text
Title: OPERATIONAL DEVIATION. CTLR ISSUED 2 DIFFERENT CLRNCS OR FLT CREW TOTALLY MISINTERPRETED CLRNC. CTLR DID NOT MONITOR FLT CREW READBACK.
Narrative: ZNY ISSUED CLRNC TO DSND SO AS TO CROSS 10 MI N OF AVP AT 10,000'. AS WE WERE DESCENDING THROUGH APPROX 10,700' CENTER SAID TO MAINTAIN 12,000. WE BEGAN A CLIMB AND TOLD CENTER WE WERE CLRED TO 10,000. (THAT IS WHAT WE READ BACK.) HE SAID TO NOW MAINTAIN 11,000, WHICH WE DID. BOTH THE CAPT (WHO TOOK THE CLRNC AND READ BACK 10,000) AND I HAD 10,000 WRITTEN DOWN AND WE ARE ALSO SURE HE READ BACK 10,000 IN ACCEPTING THE CLRNC. IF THERE WAS A MISCOPIED CLRNC, THE CTLR SHOULD HAVE PICKED UP THE INCORRECT READBACK. I'VE NOTICED FREQUENTLY LATELY THAT CTLRS ARE NOT LISTENING WELL TO READBACKS.
Data retrieved from NASA's ASRS site as of August 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.