Widebody transport has tailstrike on landing.

Attributes
ACN	251402
Time
Date	199309
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : ruh
State Reference	FO
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 4 Turbojet Eng
Flight Phase	landing other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : second officer
Qualification	pilot : instrument pilot : flight engineer pilot : commercial
ASRS Report	251402
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : less severe non adherence : published procedure
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact none taken : insufficient time
Consequence	other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

On landing at ruh, I gave the pilots a landing data card that indicated a lower landing weight than the actual weight of the aircraft. My usual practice is to check the gross weight in the gross weight indicator. This is done in case the gross weight was not changed at the last takeoff, or fuel quantity gauges becoming inaccurate during flight. During descent when making the calculation, I made a math error. This resulted in my entering the wrong v-ref bracket. Consequently all corrected speeds were lower than necessary for the landing, contributing to the incident. Procedure should be changed so that gross weight and v-spds should be determined independently by both pilots.

Original NASA ASRS Text

Title: WDB HAS TAILSTRIKE ON LNDG.

Narrative: ON LNDG AT RUH, I GAVE THE PLTS A LNDG DATA CARD THAT INDICATED A LOWER LNDG WT THAN THE ACTUAL WT OF THE ACFT. MY USUAL PRACTICE IS TO CHK THE GROSS WT IN THE GROSS WT INDICATOR. THIS IS DONE IN CASE THE GROSS WT WAS NOT CHANGED AT THE LAST TKOF, OR FUEL QUANTITY GAUGES BECOMING INACCURATE DURING FLT. DURING DSCNT WHEN MAKING THE CALCULATION, I MADE A MATH ERROR. THIS RESULTED IN MY ENTERING THE WRONG V-REF BRACKET. CONSEQUENTLY ALL CORRECTED SPDS WERE LOWER THAN NECESSARY FOR THE LNDG, CONTRIBUTING TO THE INCIDENT. PROC SHOULD BE CHANGED SO THAT GROSS WT AND V-SPDS SHOULD BE DETERMINED INDEPENDENTLY BY BOTH PLTS.

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.