Reports of incorrect FMC performance software installation on B737 aircraft.

Attributes
ACN	434526
Time
Date	199904
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : sat.vortac
State Reference	TX
Altitude	msl single value : 29000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zhu.artcc
Operator	common carrier : air carrier
Make Model Name	B737-500
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : multi engine pilot : atp pilot : commercial
Experience	flight time last 90 days : 220 flight time total : 21000 flight time type : 15000
ASRS Report	434526
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : multi engine pilot : commercial
Events
Anomaly	aircraft equipment problem : critical non adherence : company policies other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : fmc other flight crewa
Resolutory Action	flight crew : overcame equipment problem none taken : anomaly accepted
Consequence	other
Factors
Maintenance	contributing factor : engineering procedure performance deficiency : installation
Supplementary
Problem Areas	Flight Crew Human Performance Company Aircraft Maintenance Human Performance
Primary Problem	Company

Narrative:

Was notified that the FMC database was for a B737-700 series. Other than reduced thrust derate page was in -700 format -- nothing unusual noted. Onboard performance computer was used (it was in '500' mode). Company is concerned about crew that operated this aircraft with improper FMC series designation. Notified today of FMC database error. Probably should have caught FMC discrepancy, but received aircraft late and did not notice anything unusual until derate page selected just prior to takeoff.

Original NASA ASRS Text

Title: RPTS OF INCORRECT FMC PERFORMANCE SOFTWARE INSTALLATION ON B737 ACFT.

Narrative: WAS NOTIFIED THAT THE FMC DATABASE WAS FOR A B737-700 SERIES. OTHER THAN REDUCED THRUST DERATE PAGE WAS IN -700 FORMAT -- NOTHING UNUSUAL NOTED. ONBOARD PERFORMANCE COMPUTER WAS USED (IT WAS IN '500' MODE). COMPANY IS CONCERNED ABOUT CREW THAT OPERATED THIS ACFT WITH IMPROPER FMC SERIES DESIGNATION. NOTIFIED TODAY OF FMC DATABASE ERROR. PROBABLY SHOULD HAVE CAUGHT FMC DISCREPANCY, BUT RECEIVED ACFT LATE AND DID NOT NOTICE ANYTHING UNUSUAL UNTIL DERATE PAGE SELECTED JUST PRIOR TO TKOF.

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.