B737-800 flight crew departed with flaps 1 when flaps 5 was required by a fuel load increase.

Attributes
ACN	914405
Time
Date	201010
Local Time Of Day	1801-2400
Place
Locale Reference	SJU.Airport
State Reference	PR
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Make Model Name	B737-800
Operating Under FAR Part	Part 121
Flight Phase	Takeoff
Flight Plan	IFR
Person 1
Function	Pilot Not Flying Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Person 2
Function	Pilot Flying First Officer
Events
Anomaly	Deviation - Procedural Published Material / Policy

Narrative:

Take off with incorrect flap setting. Due to MEL requirement; fuel load was increased by 5000 pounds which put us over the atow but still below the runway limit for 22k [thrust setting] flaps 1. During taxi; requested new performance data via ACARS. The data did not uplink to the FMC; and had to be manually input. New data was for a 24k flaps 5 takeoff. However; flaps were still left at the previous setting of flaps 1. The takeoff was normal with a slow rotation and normal climb out. At 1000 ft pilot flying called for flaps 1; and that is when I noticed that the flaps were already at flaps 1. Take off and flight was uneventful.

Original NASA ASRS Text

Title: B737-800 flight crew departed with flaps 1 when flaps 5 was required by a fuel load increase.

Narrative: Take off with incorrect flap setting. Due to MEL requirement; fuel load was increased by 5000 LBS which put us over the ATOW but still below the runway limit for 22k [thrust setting] flaps 1. During taxi; requested new performance data via ACARS. The data did NOT uplink to the FMC; and had to be manually input. New data was for a 24k flaps 5 takeoff. However; flaps were still left at the previous setting of flaps 1. The takeoff was normal with a slow rotation and normal climb out. At 1000 FT pilot flying called for flaps 1; and that is when I noticed that the flaps were already at flaps 1. Take off and flight was uneventful.

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.