Reports of incorrect FMC performance software installation on B737 aircraft.

Attributes
ACN	434528
Time
Date	199904
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : zzz.artcc
State Reference	US
Environment
Flight Conditions	IMC
Aircraft 1
Controlling Facilities	artcc : zzz.artcc
Operator	common carrier : air carrier
Make Model Name	B737-300
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 : multi engine pilot : cfi pilot : atp
Experience	flight time last 90 days : 250 flight time total : 10000 flight time type : 8000
ASRS Report	434528
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : critical 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	Aircraft Flight Crew Human Performance Company Maintenance Human Performance
Primary Problem	Company

Narrative:

During cruise, at the end of our flying day, we noticed that the software for the FMC was configured differently than our other dash 300 aircraft. During the preflight we noticed and discussed this difference. The dates for the current version were correct. It was not till the last leg during cruise when we had time that we discovered that the FMC was for a dash 700.

Original NASA ASRS Text

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

Narrative: DURING CRUISE, AT THE END OF OUR FLYING DAY, WE NOTICED THAT THE SOFTWARE FOR THE FMC WAS CONFIGURED DIFFERENTLY THAN OUR OTHER DASH 300 ACFT. DURING THE PREFLT WE NOTICED AND DISCUSSED THIS DIFFERENCE. THE DATES FOR THE CURRENT VERSION WERE CORRECT. IT WAS NOT TILL THE LAST LEG DURING CRUISE WHEN WE HAD TIME THAT WE DISCOVERED THAT THE FMC WAS FOR A DASH 700.

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.