A clerical error leads to an overweight takeoff.

Attributes
ACN	508280
Time
Date	200104
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : shv.airport
State Reference	LA
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	SF 340A
Flight Phase	ground : takeoff roll ground : parked ground : parked
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : multi engine pilot : instrument
Experience	flight time last 90 days : 80 flight time total : 800 flight time type : 83.5
ASRS Report	508280
Events
Anomaly	non adherence : far non adherence : published procedure other anomaly other
Resolutory Action	none taken : detected after the fact
Supplementary
Problem Areas	Company Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

While calculating the weight and balance I misread/miscopied the weight of the cargo in cargo area C1. I copied 858 as 258 leading to the aircraft being 600 pounds heavier than we thought. Also, this put the aircraft 284 pounds over maximum takeoff weight. The flight proceeded without any problem. It was discovered by ground personnel at shv and we were notified via an ACARS message. I believe the reason this occurred is a combination of the number given me not being written clearly and the fact that we were late and I was attempting to get the flight out as soon as possible. To prevent future occurrences, the cargo weight sheet could be computer generated and printed. Also, the load manifest should be doublechked by both crew members.

Original NASA ASRS Text

Title: A CLERICAL ERROR LEADS TO AN OVERWT TKOF.

Narrative: WHILE CALCULATING THE WT AND BAL I MISREAD/MISCOPIED THE WT OF THE CARGO IN CARGO AREA C1. I COPIED 858 AS 258 LEADING TO THE ACFT BEING 600 LBS HEAVIER THAN WE THOUGHT. ALSO, THIS PUT THE ACFT 284 LBS OVER MAX TKOF WT. THE FLT PROCEEDED WITHOUT ANY PROB. IT WAS DISCOVERED BY GND PERSONNEL AT SHV AND WE WERE NOTIFIED VIA AN ACARS MESSAGE. I BELIEVE THE REASON THIS OCCURRED IS A COMBINATION OF THE NUMBER GIVEN ME NOT BEING WRITTEN CLEARLY AND THE FACT THAT WE WERE LATE AND I WAS ATTEMPTING TO GET THE FLT OUT ASAP. TO PREVENT FUTURE OCCURRENCES, THE CARGO WT SHEET COULD BE COMPUTER GENERATED AND PRINTED. ALSO, THE LOAD MANIFEST SHOULD BE DOUBLECHKED BY BOTH CREW MEMBERS.

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.