Date: 201907
Local time of day: 0601-1200
Location: ZZZZ.Airport, FO
Flight conditions: VMC
Aircraft: B737 Undifferentiated or Other Model
Operator: Air Carrier
Operating under: Part 121
Flight plan: IFR
Mission: Passenger
Flight phase: Takeoff / Launch
Reporter organization: Air Carrier
Reporter function: Captain; Pilot Not Flying
Reporter qualification: Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine
Human factors: Time Pressure; Communication Breakdown; Situational Awareness; Training / Qualification
Second reporter function: Pilot Flying; First Officer
Anomaly: Deviation - Speed All Types; Deviation / Discrepancy - Procedural FAR; Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural Weight And Balance; Ground Event / Encounter Ground Strike - Aircraft
Detector: Person Flight Crew
When detected: In-flight
Result: Aircraft Aircraft Damaged; Flight Crew Returned To Departure Airport
Contributing factors: Human Factors
Primary problem: Human Factors

Narrative: Just prior to push back; takeoff data was rejected due to GW (Gross Weight) greater than TOW (Takeoff Weight).  New takeoff data was requested with an incorrect takeoff weight (TOW).  A TOW of 106.7 was entered vs. the correct TOW of 160.7.  During taxi; before takeoff checklist was accomplished; incorrect weight was not caught by crew.  During takeoff; pilot flying rotated at VR (Takeoff Rotation Speed) on the FMC (Flight Management Computer) takeoff page and speed tape.  Rotation was recorded at 11.4' and tail strike occurred.  On climb out airspeed was low; stall warning activated; PM (Pilot Monitoring) called airspeed; pitch was lowered; aircraft accelerated and departure was continued.  All altitude constraints and SID (Standard Instrument Departure) routing were met.  During climb out flight attendants contacted cockpit and confirmed a tail strike.  Crew continued departure; cleared terrain; completed QRH (Quick Reference Handbook) tail strike checklist and coordinated descent from 19;000 feet with ATC (Air Traffic control).  Company/Dispatch was notified.  Aircraft held; burning fuel to reduce to landing weight.  Aircraft landed without further incident.


Second narrative: Just prior to push back TOW (Takeoff Weight) Data was rejected due to greater GW (Gross Weight) than TOW. New takeoff data was requested with an incorrect TOW. 106.7 was entered vs. correct weight of 160.7. During taxi; before takeoff checklist was accomplished and incorrect weight was not caught by crew. During takeoff; pilot flying rotated at Vr (Takeoff Rotation Speed) on FMC (Flight Management computer) takeoff page and speed tape. Rotation was recorded at 11.4'. Tail strike occurred. On climb out airspeed was low and stall warning activated. PM (Pilot Monitoring) called airspeed; pitch was lowered; aircraft accelerated and departure was continued. All altitude constraints and SID (Standard instrument Departure) routing were met. During flight; attendants contacted cockpit and confirmed tail strike. Crew continued departure; cleared terrain; completed QRH (Quick Reference Handbook) tail strike checklist and coordinated descent from 19;000 feet with ATC (Air Traffic Control). Company/Dispatch was notified. Aircraft held; burning fuel to reduce to landing weight. Aircraft landed without further incident.


Synopsis: B737 flight crew reported being provided incorrect takeoff weight data resulting in tail-strike on takeoff.