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Cpr PA31 flight crew claim that they were assigned 11000 ft, but disputed by cha controller when aircraft is observed climbing out of 10500 ft.
| Attributes | |
| ACN | 443139 |
| Time | |
| Date | 199907 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : gqo.vortac |
| State Reference | TN |
| Altitude | msl bound lower : 9000 msl bound upper : 10500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : cha.tracon |
| Operator | general aviation : corporate |
| Make Model Name | PA-31 Navajo Chieftan/Mojave/Navajo T1020 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise : enroute altitude change |
| Route In Use | enroute other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : corporate |
| Function | flight crew : captain instruction : instructor oversight : pic |
| Qualification | pilot : atp pilot : cfi pilot : multi engine |
| Experience | flight time last 90 days : 50 flight time total : 3500 flight time type : 200 |
| ASRS Report | 443139 |
| Person 2 | |
| Affiliation | company : corporate |
| Function | flight crew : first officer instruction : trainee |
| Qualification | pilot : multi engine pilot : private |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : clearance non adherence : published procedure other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | flight crew : returned to assigned altitude |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance ATC Human Performance |
| Primary Problem | ATC Human Performance |
Narrative:
While cruising at 9000 ft on an IFR flight plan, the controller asked if we could accept 7000 ft. We responded that we could, but higher would be better. The controller then said to climb and maintain 10000 ft. While climbing, the controller asked if we could accept 11000 ft. We agreed. The controller then said to maintain 11000 ft. We reported leaving 9500 ft for 11000 ft. The controller did not respond any further until at 10500 ft when we were told to descend to 10000 ft. I reported that we were cleared to 11000 ft. The controller then said we were not cleared for 11000 ft. We reported descending to 10000 ft. The owner of the aircraft is a multi-engine land/VFR rated. I am an ATP/cfii multi-engine. We practice CRM procedures. The owner was flying in the left seat while I functioned as PIC and instructor in the right. He understood that we were cleared to 11000 ft and copied it as well as I. Had we had a cockpit voice recorder we could be more positive and accurate about what was said. I feel sure we did the right thing, but know that I am human too. I think pilots and controllers should work to standardize terminology and phraseology and use caution in issuing and reading back clrncs to avoid confusion.
Original NASA ASRS Text
Title: CPR PA31 FLC CLAIM THAT THEY WERE ASSIGNED 11000 FT, BUT DISPUTED BY CHA CTLR WHEN ACFT IS OBSERVED CLBING OUT OF 10500 FT.
Narrative: WHILE CRUISING AT 9000 FT ON AN IFR FLT PLAN, THE CTLR ASKED IF WE COULD ACCEPT 7000 FT. WE RESPONDED THAT WE COULD, BUT HIGHER WOULD BE BETTER. THE CTLR THEN SAID TO CLB AND MAINTAIN 10000 FT. WHILE CLBING, THE CTLR ASKED IF WE COULD ACCEPT 11000 FT. WE AGREED. THE CTLR THEN SAID TO MAINTAIN 11000 FT. WE RPTED LEAVING 9500 FT FOR 11000 FT. THE CTLR DID NOT RESPOND ANY FURTHER UNTIL AT 10500 FT WHEN WE WERE TOLD TO DSND TO 10000 FT. I RPTED THAT WE WERE CLRED TO 11000 FT. THE CTLR THEN SAID WE WERE NOT CLRED FOR 11000 FT. WE RPTED DSNDING TO 10000 FT. THE OWNER OF THE ACFT IS A MULTI-ENG LAND/VFR RATED. I AM AN ATP/CFII MULTI-ENG. WE PRACTICE CRM PROCS. THE OWNER WAS FLYING IN THE L SEAT WHILE I FUNCTIONED AS PIC AND INSTRUCTOR IN THE R. HE UNDERSTOOD THAT WE WERE CLRED TO 11000 FT AND COPIED IT AS WELL AS I. HAD WE HAD A COCKPIT VOICE RECORDER WE COULD BE MORE POSITIVE AND ACCURATE ABOUT WHAT WAS SAID. I FEEL SURE WE DID THE RIGHT THING, BUT KNOW THAT I AM HUMAN TOO. I THINK PLTS AND CTLRS SHOULD WORK TO STANDARDIZE TERMINOLOGY AND PHRASEOLOGY AND USE CAUTION IN ISSUING AND READING BACK CLRNCS TO AVOID CONFUSION.
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.