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Altitude deviation altitude excursion -- publication deficiency -- this air carrier captain left his assigned altitude early. He complains that the SID is overly complicated and confusing.
| Attributes | |
| ACN | 321776 |
| Time | |
| Date | 199511 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : slc |
| State Reference | UT |
| Altitude | msl bound lower : 12700 msl bound upper : 13000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : slc |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent other |
| Route In Use | arrival other arrival star : star |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 12000 flight time type : 10000 |
| ASRS Report | 321776 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : far non adherence : published procedure non adherence : clearance other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation other |
| Situations | |
| ATC Facility | procedure or policy : unspecified |
Narrative:
I descended out of 13000 ft on the jammn 1, 2 mi prior to spiek and I can't tell you why. It was only a 300 ft deviation in VMC so it was not dangerous, but it was still stupid. The first officer was off talking to the company. The jammn 1 SID plate is very busy, mixes 'expect' and 'cross' altitudes and has 2 'maintain' altitudes on the south flow.
Original NASA ASRS Text
Title: ALTDEV ALT EXCURSION -- PUB DEFICIENCY -- THIS ACR CAPT LEFT HIS ASSIGNED ALT EARLY. HE COMPLAINS THAT THE SID IS OVERLY COMPLICATED AND CONFUSING.
Narrative: I DSNDED OUT OF 13000 FT ON THE JAMMN 1, 2 MI PRIOR TO SPIEK AND I CAN'T TELL YOU WHY. IT WAS ONLY A 300 FT DEV IN VMC SO IT WAS NOT DANGEROUS, BUT IT WAS STILL STUPID. THE FO WAS OFF TALKING TO THE COMPANY. THE JAMMN 1 SID PLATE IS VERY BUSY, MIXES 'EXPECT' AND 'CROSS' ALTS AND HAS 2 'MAINTAIN' ALTS ON THE S FLOW.
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.