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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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DC9-30 crew overshot the altitude assigned for crossing bunts intersection. Said that they were busy with preliminary checklists, etc. Controller catches error and advises them to remain at 7000 ft.
| Attributes | |
| ACN | 370930 |
| Time | |
| Date | 199706 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : lrp airport : phl |
| State Reference | PA |
| Altitude | msl bound lower : 7000 msl bound upper : 8000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zny |
| Operator | common carrier : air carrier |
| Make Model Name | DC-10 30 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise other 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 |
| Experience | flight time total : 12000 |
| ASRS Report | 370930 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 250 flight time total : 11000 flight time type : 250 |
| ASRS Report | 371097 |
| Events | |
| Anomaly | altitude deviation : crossing restriction not met altitude deviation : overshoot non adherence : clearance non adherence : published procedure other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
On descent to 14000 ft, given a clearance to slow to 250 KTS and cross bunts intersection at what we thought was 7000 ft. At the time, we were running a preliminary landing checklist which included securing the cabin, setting landing data and briefing the approach. At 7000 ft ZNY asked our altitude. Before we could respond, he said your altitude assigned was 8000 ft, maintain 7000 ft. There was no conflict and TCASII was clear. After discussing this event with first officer, we realized that 8000 ft is a standard clearance and may have indeed read back 8000 ft, but due to the high cockpit workload at the time, locked in at 7000 ft as the clearance. I honestly do not remember how, if we read back 8000 ft, 7000 ft was set in alerter window and not caught while using our air carrier's altitude awareness procedures.
Original NASA ASRS Text
Title: DC9-30 CREW OVERSHOT THE ALT ASSIGNED FOR XING BUNTS INTXN. SAID THAT THEY WERE BUSY WITH PRELIMINARY CHKLISTS, ETC. CTLR CATCHES ERROR AND ADVISES THEM TO REMAIN AT 7000 FT.
Narrative: ON DSCNT TO 14000 FT, GIVEN A CLRNC TO SLOW TO 250 KTS AND CROSS BUNTS INTXN AT WHAT WE THOUGHT WAS 7000 FT. AT THE TIME, WE WERE RUNNING A PRELIMINARY LNDG CHKLIST WHICH INCLUDED SECURING THE CABIN, SETTING LNDG DATA AND BRIEFING THE APCH. AT 7000 FT ZNY ASKED OUR ALT. BEFORE WE COULD RESPOND, HE SAID YOUR ALT ASSIGNED WAS 8000 FT, MAINTAIN 7000 FT. THERE WAS NO CONFLICT AND TCASII WAS CLR. AFTER DISCUSSING THIS EVENT WITH FO, WE REALIZED THAT 8000 FT IS A STANDARD CLRNC AND MAY HAVE INDEED READ BACK 8000 FT, BUT DUE TO THE HIGH COCKPIT WORKLOAD AT THE TIME, LOCKED IN AT 7000 FT AS THE CLRNC. I HONESTLY DO NOT REMEMBER HOW, IF WE READ BACK 8000 FT, 7000 FT WAS SET IN ALERTER WINDOW AND NOT CAUGHT WHILE USING OUR ACR'S ALT AWARENESS 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.