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Miscom on cleared altitude with resultant altitude deviation. ATC intervened and flight crew descended to cleared altitude.
| Attributes | |
| ACN | 323650 |
| Time | |
| Date | 199512 |
| Day | Thu |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : mol |
| State Reference | VA |
| Altitude | msl bound lower : 22000 msl bound upper : 23000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise other descent other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : cfi pilot : flight engineer |
| Experience | flight time last 90 days : 175 flight time total : 18000 flight time type : 10000 |
| ASRS Report | 323650 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : undershoot non adherence : clearance |
| 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:
ATC controller asked altitude, we stated FL230. She said assigned FL220. No conflict, we descended to FL220. I thought she was in error, however, two 14 hour duty days and many delays due to snow storm. Who knows duty days too long, crew was tired.
Original NASA ASRS Text
Title: MISCOM ON CLRED ALT WITH RESULTANT ALTDEV. ATC INTERVENED AND FLC DSNDED TO CLRED ALT.
Narrative: ATC CTLR ASKED ALT, WE STATED FL230. SHE SAID ASSIGNED FL220. NO CONFLICT, WE DSNDED TO FL220. I THOUGHT SHE WAS IN ERROR, HOWEVER, TWO 14 HR DUTY DAYS AND MANY DELAYS DUE TO SNOW STORM. WHO KNOWS DUTY DAYS TOO LONG, CREW WAS TIRED.
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.