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Flight crew complaint about departure controller phraseology when giving amended clearance altitude assignment.
| Attributes | |
| ACN | 107772 |
| Time | |
| Date | 198903 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : den |
| State Reference | CO |
| Altitude | msl bound lower : 10000 msl bound upper : 12000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : den tower : orh |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | climbout : intermediate altitude cruise other |
| Route In Use | departure sid : sid |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 5000 flight time type : 1400 |
| ASRS Report | 107772 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : departure |
| Qualification | controller : radar |
| Events | |
| Anomaly | other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Ambiguous |
| Air Traffic Incident | other |
Narrative:
We were climbing out of den stapleton on the denver nine departure and were given an altitude limit of 10000' MSL, coming through about 9000' MSL the controller issued a clearance, as I understood it; 'climb limit to 12000' MSL.' just above 10000' MSL the controller said; 'maintain 10000' crossing traffic at 11000',' MSL. We re-levelled 10000' MSL. I do not remember the exact verbiage of the controllers climb clearance but the verbage that he used gave me the strong indication that we were cleared to climb to 12000' MSL. When we were given what I understood as climb clearance we 'rogered' the instruction but did not read back the altitude. However many times the wrong instructions are readback and the incorrect readback is 'rogered' by the controller. It may help in the future to eliminate confusing and un-needed communications.
Original NASA ASRS Text
Title: FLT CREW COMPLAINT ABOUT DEP CTLR PHRASEOLOGY WHEN GIVING AMENDED CLRNC ALT ASSIGNMENT.
Narrative: WE WERE CLBING OUT OF DEN STAPLETON ON THE DENVER NINE DEP AND WERE GIVEN AN ALT LIMIT OF 10000' MSL, COMING THROUGH ABOUT 9000' MSL THE CTLR ISSUED A CLRNC, AS I UNDERSTOOD IT; 'CLB LIMIT TO 12000' MSL.' JUST ABOVE 10000' MSL THE CTLR SAID; 'MAINTAIN 10000' XING TFC AT 11000',' MSL. WE RE-LEVELLED 10000' MSL. I DO NOT REMEMBER THE EXACT VERBIAGE OF THE CTLRS CLB CLRNC BUT THE VERBAGE THAT HE USED GAVE ME THE STRONG INDICATION THAT WE WERE CLRED TO CLB TO 12000' MSL. WHEN WE WERE GIVEN WHAT I UNDERSTOOD AS CLB CLRNC WE 'ROGERED' THE INSTRUCTION BUT DID NOT READ BACK THE ALT. HOWEVER MANY TIMES THE WRONG INSTRUCTIONS ARE READBACK AND THE INCORRECT READBACK IS 'ROGERED' BY THE CTLR. IT MAY HELP IN THE FUTURE TO ELIMINATE CONFUSING AND UN-NEEDED COMS.
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.