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A B737-700 was discovered to have an incorrect program loaded into the FMC. Had 22K engine in computer. Actual 24K on aircraft.
| Attributes | |
| ACN | 615150 |
| Time | |
| Date | 200404 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : zla.artcc |
| State Reference | CA |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zla.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B737-700 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 75 flight time total : 7500 flight time type : 4000 |
| ASRS Report | 615150 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : improper maintenance non adherence : company policies non adherence : far non adherence : published procedure |
| Independent Detector | aircraft equipment other aircraft equipment : fmc software other flight crewa other flight crewb |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | performance deficiency : logbook entry performance deficiency : installation performance deficiency : non compliance with legal requirements |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft Flight Crew Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
While in cruise, we noticed the aircraft FMC was for 22K aircraft, even though we were flying an aircraft that was equipped with 24K engines. The logbook, cockpit instrument panel, and the opc all showed a 24K aircraft. The FMC was a 22K aircraft. Recent changes in using assumed temperature made it more difficult to notice the wrong FMC software was loaded. In the future, a more detailed check of the FMC will be made to insure the correct software is loaded.
Original NASA ASRS Text
Title: A B737-700 WAS DISCOVERED TO HAVE AN INCORRECT PROGRAM LOADED INTO THE FMC. HAD 22K ENG IN COMPUTER. ACTUAL 24K ON ACFT.
Narrative: WHILE IN CRUISE, WE NOTICED THE ACFT FMC WAS FOR 22K ACFT, EVEN THOUGH WE WERE FLYING AN ACFT THAT WAS EQUIPPED WITH 24K ENGS. THE LOGBOOK, COCKPIT INST PANEL, AND THE OPC ALL SHOWED A 24K ACFT. THE FMC WAS A 22K ACFT. RECENT CHANGES IN USING ASSUMED TEMP MADE IT MORE DIFFICULT TO NOTICE THE WRONG FMC SOFTWARE WAS LOADED. IN THE FUTURE, A MORE DETAILED CHK OF THE FMC WILL BE MADE TO INSURE THE CORRECT SOFTWARE IS LOADED.
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.