Narrative:

Normal procedures [were] followed through preflight and taxi. All takeoff bug speeds were verified in accordance with normal procedures. I was captain and pilot flying. During takeoff roll; V1 auto-callout was announced by the aircraft 20 knots early. I eased back on the yoke and began rotation; when I realized I was below rotation speed. There was no pilot monitoring callout for rotation. I eased the nose of the aircraft back to the runway. I then rotated at the normal rotation speed and achieved approximately 10 degrees nose up at about 155-160 KTS. Everything else seemed normal. At 10;000 ft; after the sterile chime; a flight attendant asked me about the attempted rotation and set down. Her verbiage was approximately; 'what was that bump?' I explained what had happened and inquired if she heard any scraping. She said no. We pressurized normally and continued to our destination. At 3 hours into the flight (approximately); the flight attendants expressed concern that we had scraped the aircraft on takeoff; but were not sure. Upon receiving this new information; the copilot and I conducted the suspected tail-strike on takeoff portion of the QRH. We landed without declaring an emergency at our scheduled destination. After landing; and upon a post flight inspection; damage to the tail-skid was discovered. Dispatch and chief pilot were contacted.

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Original NASA ASRS Text

Title: A B737-800 Captain rotated 20 KTS below V1 when the autovoice V1 erroneously made the callout and then set down for a short period before rotating again. During the second rotation a tail strike occurred which flight attendants reported but the pilots did not immediately react to the report.

Narrative: Normal procedures [were] followed through preflight and taxi. All takeoff bug speeds were verified in accordance with normal procedures. I was Captain and pilot flying. During takeoff roll; V1 auto-callout was announced by the aircraft 20 knots early. I eased back on the yoke and began rotation; when I realized I was below rotation speed. There was no pilot monitoring callout for rotation. I eased the nose of the aircraft back to the runway. I then rotated at the normal rotation speed and achieved approximately 10 degrees nose up at about 155-160 KTS. Everything else seemed normal. At 10;000 FT; after the sterile chime; a Flight Attendant asked me about the attempted rotation and set down. Her verbiage was approximately; 'What was that bump?' I explained what had happened and inquired if she heard any scraping. She said no. We pressurized normally and continued to our destination. At 3 hours into the flight (approximately); the flight attendants expressed concern that we had scraped the aircraft on takeoff; but were not sure. Upon receiving this new information; the copilot and I conducted the suspected tail-strike on takeoff portion of the QRH. We landed without declaring an emergency at our scheduled destination. After landing; and upon a post flight inspection; damage to the tail-skid was discovered. Dispatch and Chief Pilot were contacted.

Data retrieved from NASA's ASRS site as of April 2012 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.