 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Air carrier large transport altitude deviation undershot crossing restriction. So claims flight crew work scheduling was the cause.
| Attributes | |
| ACN | 157129 |
| Time | |
| Date | 199009 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : ewr |
| State Reference | NJ |
| Altitude | msl bound lower : 21000 msl bound upper : 22500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zny |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 3 Turbojet Eng |
| Flight Phase | descent other |
| Route In Use | enroute airway : zny |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : second officer |
| Qualification | pilot : atp pilot : cfi pilot : flight engineer |
| Experience | flight time last 90 days : 210 flight time total : 5000 flight time type : 800 |
| ASRS Report | 157129 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : undershoot altitude deviation : crossing restriction not met non adherence : clearance |
| Independent Detector | other controllera |
| Resolutory Action | none taken : anomaly accepted other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Particulars don't matter too much. We were cleared to cross 10 west of a fix at or below FL210 in our descent. At 6 east of the fix we were questioned about the restriction. (We were descending through FL22.5). The first officer (flying) said oops he (the controller) said 10 west not 10 east. The captain forgot the restriction. I wasn't paying much attention until now. (Off in my own world at the engineers panel). Is some evidence to the problem of disrupting sleep cycles. Lack of sleep. We were on a normal 'stand up over night.' we arrived at xa:50 am local time and didn't get to the hotel room until xb:30 am. The wake up call was at xe:15 am. That's 3 hours 45 min sleep. The captain and first officer got wake up calls at xe:00 am or 3 1/2 hours of bed time.
Original NASA ASRS Text
Title: ACR LGT ALT DEVIATION UNDERSHOT CROSSING RESTRICTION. SO CLAIMS FLT CREW WORK SCHEDULING WAS THE CAUSE.
Narrative: PARTICULARS DON'T MATTER TOO MUCH. WE WERE CLRED TO CROSS 10 W OF A FIX AT OR BELOW FL210 IN OUR DSNT. AT 6 E OF THE FIX WE WERE QUESTIONED ABOUT THE RESTRICTION. (WE WERE DSNDING THROUGH FL22.5). THE F/O (FLYING) SAID OOPS HE (THE CTLR) SAID 10 W NOT 10 E. THE CAPT FORGOT THE RESTRICTION. I WASN'T PAYING MUCH ATTN UNTIL NOW. (OFF IN MY OWN WORLD AT THE ENGINEERS PANEL). IS SOME EVIDENCE TO THE PROB OF DISRUPTING SLEEP CYCLES. LACK OF SLEEP. WE WERE ON A NORMAL 'STAND UP OVER NIGHT.' WE ARRIVED AT XA:50 AM LCL TIME AND DIDN'T GET TO THE HOTEL ROOM UNTIL XB:30 AM. THE WAKE UP CALL WAS AT XE:15 AM. THAT'S 3 HRS 45 MIN SLEEP. THE CAPT AND F/O GOT WAKE UP CALLS AT XE:00 AM OR 3 1/2 HRS OF BED TIME.
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.