A reserve A320 captain's early show rest period was reset mid morning for a late evening departure; ...

Narrative:

I was the 0700 short call and adjusted my sleep schedule accordingly expecting to be off duty by 2200. Scheduling called at 1045 to 'reset my rest' and now begin my duty day 2030. I was unable to immediately go to sleep at 11:00 in the morning or at any other time throughout the day. This meant doing this trip would have me awake for over 21 consecutive hours. This is unsafe. I called in fatigued. This 'rest resetting' has got to stop.

Original NASA ASRS Text

Title: A reserve A320 Captain's early show rest period was reset mid morning for a late evening departure; but was unable to get rest during the day so he called in fatigued.

Narrative: I was the 0700 short call and adjusted my sleep schedule accordingly expecting to be off duty by 2200. Scheduling called at 1045 to 'reset my rest' and now begin my duty day 2030. I was unable to immediately go to sleep at 11:00 in the morning or at any other time throughout the day. This meant doing this trip would have me awake for over 21 consecutive hours. This is unsafe. I called in fatigued. This 'rest resetting' has got to stop.

Data retrieved from NASA's ASRS site as of July 2013 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.

Attributes
ACN	996814
Time
Date	201203
Local Time Of Day	0601-1200
Environment
Light	Daylight
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 30 Flight Crew Total 15000 Flight Crew Type 3500
Events
Anomaly	Other Fatigue

A reserve A320 captain's early show rest period was reset mid morning for a late evening departure; but was unable to get rest during the day so he called in fatigued.