Narrative:

I was assigned a XA00 short call. At XA05 I was assigned a pairing which was originally for a XC05 takeoff. I accepted the reduced call out to help the operation and keep the flight on time. The flight was then delayed until XD05 due to a late inbound aircraft. This pairing had numerous changes throughout the day along with a long taxi delay; enroute hazardous weather and multiple ATC reroutes which extended our flight time and further delayed the flight. During our flight; the first officer (first officer) and I reviewed the doors video on his elb. Both legs we were notified via ACARS that the aircraft is a quick turn. The aircraft was scheduled to fly to ZZZ 2 at XL15 which was our estimated arrival time. The first officer and I did everything we could to get the aircraft back to ZZZ 1 as soon as possible to help facilitate the delayed flight ZZZ 2.after arriving in ZZZ 2 our gate was occupied. We waited for the aircraft to clear before taxiing into our assigned gate further delaying the flight to ZZZ 2. We completed the parking checklist and I got up to disarm the doors.after arriving at door 1L; I placed my hand on the disarm cover while unintentionally placing my other hand on the door operating handle attempting to disarm the door. What I felt was a little pressure on the door operating handle the handle moved ever so slightly upward. After realizing that I had inadvertently pulled on the operating handle I tried to stop the handle from moving up but was to no avail as the door was opening and the slide was deploying. After ensuring the safety of our coworkers below and to further secure the situation I instructed the first officer to call mx to inform them that I had inadvertently deployed the slide.I believe that this incident was caused from fatigue and just trying to expedite the flight. It was my mistake as I know that I should never hurry and forsake safety. It was a momentary lapse of judgment which I regret and will never make that mistake again. I will from now on treat this as an abnormal situation (since we do not arm the doors on a regular basis) and have both crew confirm and verify when arming or disarming doors on a ferry flight.

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Original NASA ASRS Text

Title: B767 flight crew reported Captain inadvertently deployed 1L door slide at block in while disarming after ferry flight.

Narrative: I was assigned a XA00 short call. At XA05 I was assigned a pairing which was originally for a XC05 takeoff. I accepted the reduced call out to help the operation and keep the flight on time. The flight was then delayed until XD05 due to a late inbound aircraft. This pairing had numerous changes throughout the day along with a long taxi delay; enroute hazardous weather and multiple ATC reroutes which extended our flight time and further delayed the flight. During our flight; the First Officer (FO) and I reviewed the doors video on his ELB. Both legs we were notified via ACARS that the aircraft is a quick turn. The aircraft was scheduled to fly to ZZZ 2 at XL15 which was our estimated arrival time. The FO and I did everything we could to get the aircraft back to ZZZ 1 as soon as possible to help facilitate the delayed flight ZZZ 2.After arriving in ZZZ 2 our gate was occupied. We waited for the aircraft to clear before taxiing into our assigned gate further delaying the flight to ZZZ 2. We completed the parking checklist and I got up to disarm the doors.After arriving at door 1L; I placed my hand on the disarm cover while unintentionally placing my other hand on the door operating handle attempting to disarm the door. What I felt was a little pressure on the door operating handle the handle moved ever so slightly upward. After realizing that I had inadvertently pulled on the operating handle I tried to stop the handle from moving up but was to no avail as the door was opening and the slide was deploying. After ensuring the safety of our coworkers below and to further secure the situation I instructed the FO to call MX to inform them that I had inadvertently deployed the slide.I believe that this incident was caused from fatigue and just trying to expedite the flight. It was my mistake as I know that I should never hurry and forsake safety. It was a momentary lapse of judgment which I regret and will never make that mistake again. I will from now on treat this as an abnormal situation (since we do not arm the doors on a regular basis) and have both crew confirm and verify when arming or disarming doors on a ferry flight.

Data retrieved from NASA's ASRS site 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.