|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Locale Reference||airport : smf|
|Affiliation||company : air carrier|
|Function||flight crew : captain|
oversight : pic
|Qualification||pilot : atp|
|Air Traffic Incident||other|
Trip xxab xxdc xxff, a jul pattern, disregards multiple human factors considerations. The first day of the trip is no problem. The second day alone is ok. It is the third day, tacked onto the second, that is the real hazard. The second day reports reasonably early and continues in and out of the la area for 11 hours of duty and 7.2 hours of flying. After this the crew then gets a reduced rest, and then may be at the airport at XD00. The crew is then on duty for 11.9 hours, with 6.9 hours of flying (in and out of the busiest airspace in our system). To add insult to injury, the crew must wait 2.4 hours before starting the last leg home. This trip contains the following human factors hazards: 1) long duty day in busy airspace (days 2 and 3). 2) long block hours in busy airspace (days 2 and 3). 3) reduced rest after long duty day/block hours (night 2). 4) long duty day/block hours after reduced rest (day 3). 5) back side of the clock operation (day 3). Any one of these hazards is tolerable, but the combination of all of them is potentially lethal.
Original NASA ASRS Text
Title: CAPT'S REPORTER ABOUT COMPANY SCHEDULING.
Narrative: TRIP XXAB XXDC XXFF, A JUL PATTERN, DISREGARDS MULTIPLE HUMAN FACTORS CONSIDERATIONS. THE FIRST DAY OF THE TRIP IS NO PROB. THE SECOND DAY ALONE IS OK. IT IS THE THIRD DAY, TACKED ONTO THE SECOND, THAT IS THE REAL HAZARD. THE SECOND DAY RPTS REASONABLY EARLY AND CONTINUES IN AND OUT OF THE LA AREA FOR 11 HRS OF DUTY AND 7.2 HRS OF FLYING. AFTER THIS THE CREW THEN GETS A REDUCED REST, AND THEN MAY BE AT THE ARPT AT XD00. THE CREW IS THEN ON DUTY FOR 11.9 HRS, WITH 6.9 HRS OF FLYING (IN AND OUT OF THE BUSIEST AIRSPACE IN OUR SYS). TO ADD INSULT TO INJURY, THE CREW MUST WAIT 2.4 HRS BEFORE STARTING THE LAST LEG HOME. THIS TRIP CONTAINS THE FOLLOWING HUMAN FACTORS HAZARDS: 1) LONG DUTY DAY IN BUSY AIRSPACE (DAYS 2 AND 3). 2) LONG BLOCK HRS IN BUSY AIRSPACE (DAYS 2 AND 3). 3) REDUCED REST AFTER LONG DUTY DAY/BLOCK HRS (NIGHT 2). 4) LONG DUTY DAY/BLOCK HRS AFTER REDUCED REST (DAY 3). 5) BACK SIDE OF THE CLOCK OPERATION (DAY 3). ANY ONE OF THESE HAZARDS IS TOLERABLE, BUT THE COMBINATION OF ALL OF THEM IS POTENTIALLY LETHAL.
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.