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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Altitude deviation altitude excursion from assigned. Flight crew deviation. Non adherence to ATC clearance procedure. Air carrier medium large transport left assigned altitude when cleared to an intersection 'via the transition.'
| Attributes | |
| ACN | 354920 |
| Time | |
| Date | 199612 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : ssr airport : jnu |
| State Reference | AK |
| Altitude | msl bound lower : 10200 msl bound upper : 11000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zan |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent other |
| Route In Use | arrival other arrival star : star enroute other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : cfi pilot : commercial pilot : flight engineer pilot : instrument |
| Experience | flight time last 90 days : 120 flight time total : 8000 flight time type : 1500 |
| ASRS Report | 354920 |
| 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 : published procedure non adherence : clearance non adherence : far other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | flight crew : returned to intended course or assigned course other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Flying from yak to jnu on J541 we were between bergs intersection (ssr 273/39D) and asort intersection (ssr 273/21D). Our last clearance was a pilot discretion descent to 11000 ft. We were level at 11000 ft. The center controller then said 'you are now cleared to the lynns intersection via the transition, no delay expected.' the MEA is 9000 ft however, the 'approach transition' has a 10000 ft restr at the ijdl 30 DME. We began a descent to 10000 ft. At about 10200 ft MSL the controller said maintain 11000 ft. We immediately climbed back to 11000 ft. After a few mins we were cleared for the approach. When the controller handed us over to the tower he said 'thanks for the help.' when the controller said 'you are now cleared to lynns via the transition,' we were under the impression this included altitudes. I believe we were correct. We have been given this clearance many times.
Original NASA ASRS Text
Title: ALTDEV ALT EXCURSION FROM ASSIGNED. FLC DEV. NON ADHERENCE TO ATC CLRNC PROC. ACR MLG LEFT ASSIGNED ALT WHEN CLRED TO AN INTXN 'VIA THE TRANSITION.'
Narrative: FLYING FROM YAK TO JNU ON J541 WE WERE BTWN BERGS INTXN (SSR 273/39D) AND ASORT INTXN (SSR 273/21D). OUR LAST CLRNC WAS A PLT DISCRETION DSCNT TO 11000 FT. WE WERE LEVEL AT 11000 FT. THE CTR CTLR THEN SAID 'YOU ARE NOW CLRED TO THE LYNNS INTXN VIA THE TRANSITION, NO DELAY EXPECTED.' THE MEA IS 9000 FT HOWEVER, THE 'APCH TRANSITION' HAS A 10000 FT RESTR AT THE IJDL 30 DME. WE BEGAN A DSCNT TO 10000 FT. AT ABOUT 10200 FT MSL THE CTLR SAID MAINTAIN 11000 FT. WE IMMEDIATELY CLBED BACK TO 11000 FT. AFTER A FEW MINS WE WERE CLRED FOR THE APCH. WHEN THE CTLR HANDED US OVER TO THE TWR HE SAID 'THANKS FOR THE HELP.' WHEN THE CTLR SAID 'YOU ARE NOW CLRED TO LYNNS VIA THE TRANSITION,' WE WERE UNDER THE IMPRESSION THIS INCLUDED ALTS. I BELIEVE WE WERE CORRECT. WE HAVE BEEN GIVEN THIS CLRNC MANY TIMES.
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.