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A B727 first officer reported that readback hearback was inadequate near cty, causing a disputed altitude deviation.
| Attributes | |
| ACN | 494570 |
| Time | |
| Date | 200012 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| State Reference | FL |
| Altitude | msl bound lower : 28000 msl bound upper : 29400 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zjx.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B727 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : vacating altitude |
| Route In Use | departure other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : flight engineer pilot : multi engine |
| Experience | flight time last 90 days : 240 flight time total : 6500 flight time type : 2800 |
| ASRS Report | 494570 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance |
| Consequence | faa : reviewed incident with flight crew other |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance ATC Human Performance |
| Primary Problem | Ambiguous |
| Situations | |
| ATC Facility | staffing : zjx.artcc |
Narrative:
On with ZJX, climbing through FL260, we were given clearance to FL310. Read back 'climb to FL310.' through altitude FL294, we were asked to 'say altitude.' responded 'air carrier X is FL290 for FL310.' controller 'air carrier X, you were assigned FL280.' responded 'we read back climb to FL310, air carrier X.' controller 'descend immediately to FL290.' responded 'FL290, air carrier X.' we were advised later by ZTL of a 'possible pilot deviation' and given a number to call. Center controllers work too many frequencys and are not listening to readbacks! There is no need for the readback system if the controllers are too busy to listen.
Original NASA ASRS Text
Title: A B727 FO RPTED THAT READBACK HEARBACK WAS INADEQUATE NEAR CTY, CAUSING A DISPUTED ALTDEV.
Narrative: ON WITH ZJX, CLBING THROUGH FL260, WE WERE GIVEN CLRNC TO FL310. READ BACK 'CLB TO FL310.' THROUGH ALT FL294, WE WERE ASKED TO 'SAY ALT.' RESPONDED 'ACR X IS FL290 FOR FL310.' CTLR 'ACR X, YOU WERE ASSIGNED FL280.' RESPONDED 'WE READ BACK CLB TO FL310, ACR X.' CTLR 'DSND IMMEDIATELY TO FL290.' RESPONDED 'FL290, ACR X.' WE WERE ADVISED LATER BY ZTL OF A 'POSSIBLE PLTDEV' AND GIVEN A NUMBER TO CALL. CTR CTLRS WORK TOO MANY FREQS AND ARE NOT LISTENING TO READBACKS! THERE IS NO NEED FOR THE READBACK SYS IF THE CTLRS ARE TOO BUSY TO LISTEN.
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.