A B737-700 first officer reported that the onboard performance computer was not deferred correctly.

Attributes
ACN	454270
Time
Date	199911
Day	Fri
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B737-700
Operating Under FAR Part	Part 121
Flight Phase	other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 240 flight time total : 3300 flight time type : 465
ASRS Report	454270
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	maintenance problem : non compliance with mel maintenance problem : improper documentation non adherence : published procedure non adherence : company policies
Independent Detector	other flight crewa other flight crewb
Resolutory Action	none taken : anomaly accepted
Consequence	other other
Supplementary
Problem Areas	Aircraft Company Maintenance Human Performance Flight Crew Human Performance
Primary Problem	Maintenance Human Performance

Narrative:

We flew an aircraft (B737-700) with an onboard performance computer that was inoperative. The onboard performance computer was not deferred correctly. The captain called dispatch before each push to get our takeoff performance numbers. This event occurred on nov/xa/99. Our first flight pushed from the gate at XA58 and landed at XC00. The second flight pushed at XC34 and landed at XG19.

Original NASA ASRS Text

Title: A B737-700 FO RPTED THAT THE ONBOARD PERFORMANCE COMPUTER WAS NOT DEFERRED CORRECTLY.

Narrative: WE FLEW AN ACFT (B737-700) WITH AN ONBOARD PERFORMANCE COMPUTER THAT WAS INOP. THE ONBOARD PERFORMANCE COMPUTER WAS NOT DEFERRED CORRECTLY. THE CAPT CALLED DISPATCH BEFORE EACH PUSH TO GET OUR TKOF PERFORMANCE NUMBERS. THIS EVENT OCCURRED ON NOV/XA/99. OUR FIRST FLT PUSHED FROM THE GATE AT XA58 AND LANDED AT XC00. THE SECOND FLT PUSHED AT XC34 AND LANDED AT XG19.

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.