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A pilot feels that extended exposure to multiple flts that operate during the normal sleep hours, continuous duty overnights, is difficult.
| Attributes | |
| ACN | 441264 |
| Time | |
| Date | 199906 |
| Day | Mon |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| State Reference | TX |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : parked |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 4900 flight time type : 3000 |
| ASRS Report | 441264 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial pilot : multi engine |
| Experience | flight time last 90 days : 150 flight time total : 4900 flight time type : 3000 |
| ASRS Report | 441264 |
| Events | |
| Anomaly | other anomaly other |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | none taken : anomaly accepted none taken : detected after the fact |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Ambiguous |
Narrative:
The problem of fatigue is compounded when a pilot is forced to repeat these continuous duty overnights several times in a row. After all, a pilot can compensate for 1 night of little rest, but the cumulative effects of many nights of lost sleep are not easily overcome. A continuous duty overnight schedule is as follows: XA15 pm -- pilot arrives at the airport. XB00 pm -- takeoff (if no delays). XD00 pm -- pilot arrives at the hotel for 'rest' (again, if no delays). XI00 am -- wake-up call. XL00 am -- pilot returns to domicile. After 3 continuous duty overnights in a row, many pilots find it difficult to recover because of the cumulative effects of fatigue.
Original NASA ASRS Text
Title: A PLT FEELS THAT EXTENDED EXPOSURE TO MULTIPLE FLTS THAT OPERATE DURING THE NORMAL SLEEP HRS, CONTINUOUS DUTY OVERNIGHTS, IS DIFFICULT.
Narrative: THE PROB OF FATIGUE IS COMPOUNDED WHEN A PLT IS FORCED TO REPEAT THESE CONTINUOUS DUTY OVERNIGHTS SEVERAL TIMES IN A ROW. AFTER ALL, A PLT CAN COMPENSATE FOR 1 NIGHT OF LITTLE REST, BUT THE CUMULATIVE EFFECTS OF MANY NIGHTS OF LOST SLEEP ARE NOT EASILY OVERCOME. A CONTINUOUS DUTY OVERNIGHT SCHEDULE IS AS FOLLOWS: XA15 PM -- PLT ARRIVES AT THE ARPT. XB00 PM -- TKOF (IF NO DELAYS). XD00 PM -- PLT ARRIVES AT THE HOTEL FOR 'REST' (AGAIN, IF NO DELAYS). XI00 AM -- WAKE-UP CALL. XL00 AM -- PLT RETURNS TO DOMICILE. AFTER 3 CONTINUOUS DUTY OVERNIGHTS IN A ROW, MANY PLTS FIND IT DIFFICULT TO RECOVER BECAUSE OF THE CUMULATIVE EFFECTS OF FATIGUE.
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.