Browse and search NASA'sAviation Safety Reporting System
Local Time Of Day|
0601 To 1200|
atc facility : phx|
msl bound lower : 9000msl bound upper : 10000
tracon : phx|
common carrier : air taxi|
Make Model Name|
Small Transport, Low Wing, 2 Turboprop Eng|
cruise otherdescent other
Route In Use|
flight crew : single pilot|
pilot : atppilot : commercial
pilot : instrument
flight time last 90 days : 100flight time total : 6000
flight time type : 600
government : faa|
controller : approach|
controller : radar|
altitude deviation : undershootnon adherence : clearance
Flight Crew Human Performance|
Air Traffic Incident|
I was at 11000 MSL inbound on the fossl 2 arrival into phx. The controller told me to descend to 9000 ft after crossing tonto intersection. Due to distrs in the aircraft with the medical crew, I was too busy to write down the 9000 assigned altitude. After hearing the approach controller assigning (10000 ft after crossing tonto intersection) to other aircraft following me, I thought that I too must have been assigned 10000 ft. I descended to 10000 ft, leveled off, and then was told that I should have descended to 9000 ft MSL. In order to prevent this problem from occurring in the future I will be more vigilant about ignoring crew requests and distrs. I normally write down assigned altitudes or insert the numbers into the altitude alert system. This was the rare occurrence that I did not. Callback conversation with reporter revealed the following information. Callback done for EMS study. Reporter states patient condition is always a consideration. He was distraction due medical personnel questioning about flight progress. Annoyed with himself that he was not more alert in using his normal procedures.
Original NASA ASRS Text
Title: EMS FLT DSNDS TO WRONG ALT. CTLR CORRECTS.
Narrative: I WAS AT 11000 MSL INBOUND ON THE FOSSL 2 ARR INTO PHX. THE CTLR TOLD ME TO DSND TO 9000 FT AFTER XING TONTO INTXN. DUE TO DISTRS IN THE ACFT WITH THE MEDICAL CREW, I WAS TOO BUSY TO WRITE DOWN THE 9000 ASSIGNED ALT. AFTER HEARING THE APCH CTLR ASSIGNING (10000 FT AFTER XING TONTO INTXN) TO OTHER ACFT FOLLOWING ME, I THOUGHT THAT I TOO MUST HAVE BEEN ASSIGNED 10000 FT. I DSNDED TO 10000 FT, LEVELED OFF, AND THEN WAS TOLD THAT I SHOULD HAVE DSNDED TO 9000 FT MSL. IN ORDER TO PREVENT THIS PROBLEM FROM OCCURRING IN THE FUTURE I WILL BE MORE VIGILANT ABOUT IGNORING CREW REQUESTS AND DISTRS. I NORMALLY WRITE DOWN ASSIGNED ALTS OR INSERT THE NUMBERS INTO THE ALT ALERT SYS. THIS WAS THE RARE OCCURRENCE THAT I DID NOT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO. CALLBACK DONE FOR EMS STUDY. RPTR STATES PATIENT CONDITION IS ALWAYS A CONSIDERATION. HE WAS DISTR DUE MEDICAL PERSONNEL QUESTIONING ABOUT FLT PROGRESS. ANNOYED WITH HIMSELF THAT HE WAS NOT MORE ALERT IN USING HIS NORMAL PROCS.
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.