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Flight crew of an FK100 overshot descent altitude during descent due to the captain's misunderstanding of the latest ATC descent instructions resulting in ATC intervention.
| Attributes | |
| ACN | 338280 |
| Time | |
| Date | 199606 |
| Day | Mon |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : fka |
| State Reference | NY |
| Altitude | msl bound lower : 20700 msl bound upper : 21000 |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zbw artcc : zbpe |
| Operator | common carrier : air carrier |
| Make Model Name | Fokker 100 |
| Operating Under FAR Part | Part 121 |
| 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 : atp |
| ASRS Report | 338280 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : clearance |
| 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:
Location -- 30 M west of cyper, extol arrival to lga. West of cyper eastbound ZBW gave issued clearance from FL290 pilot's discretion to FL210 expect FL180 at cyper. This clearance followed shortly by cleared direct to cyper. The first officer correctly entered FL210 in the fmp altitude window and crosschecked. The captain changed it to FL180 after cleared direct to cyper. He misunderstood the clearance. ZBW caught the deviation at FL207. Climbed back to FL210. Contributing factor: fatigue, multiple trips back and forth between lga and yyz with bad WX. Short duration layover. Recommendation: stop 4 day trips, 5 leg days, short layovers.
Original NASA ASRS Text
Title: FLC OF AN FK100 OVERSHOT DSCNT ALT DURING DSCNT DUE TO THE CAPT'S MISUNDERSTANDING OF THE LATEST ATC DSCNT INSTRUCTIONS RESULTING IN ATC INTERVENTION.
Narrative: LOCATION -- 30 M W OF CYPER, EXTOL ARR TO LGA. W OF CYPER EBOUND ZBW GAVE ISSUED CLRNC FROM FL290 PLT'S DISCRETION TO FL210 EXPECT FL180 AT CYPER. THIS CLRNC FOLLOWED SHORTLY BY CLRED DIRECT TO CYPER. THE FO CORRECTLY ENTERED FL210 IN THE FMP ALT WINDOW AND XCHKED. THE CAPT CHANGED IT TO FL180 AFTER CLRED DIRECT TO CYPER. HE MISUNDERSTOOD THE CLRNC. ZBW CAUGHT THE DEV AT FL207. CLBED BACK TO FL210. CONTRIBUTING FACTOR: FATIGUE, MULTIPLE TRIPS BACK AND FORTH BTWN LGA AND YYZ WITH BAD WX. SHORT DURATION LAYOVER. RECOMMENDATION: STOP 4 DAY TRIPS, 5 LEG DAYS, SHORT LAYOVERS.
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.